Mybatis生成器插件擴展，生成OR操作

ManExample example = new ManExample();ManExample.Criteria and = example.createCriteria();and.andNameIsEmpty().andNameFindInSet("a").andNameFindInSetIn(Arrays.asList("1", "2", "3"));ManExample.OrCriteria andOr = and.openOrCriteria();andOr.andIdEqualTo(1).andNameFindInSetIn(Arrays.asList("5", "6", "7"));ManExample.AndCriteria andOrAnd = andOr.openAndCriteria();andOrAnd.andIdEqualTo(2).andIdGreaterThan(3);

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一、生成OR原理

（1）添加OrCriterion和AndCriterion，用來包裝Criteria

public abstract static class OpCriterion<E extends AbstractCriteria> extends Criterion {protected E criteria;public OpCriterion() {super(null);}public void setCriteria(E criteria) {this.criteria = criteria;}public E getCriteria() {return criteria;} }public static class OrCriterion extends OpCriterion<OrCriteria> {}public static class AndCriterion extends OpCriterion<AndCriteria> {}

（2）GeneratedCriteria類改為泛型

public abstract static class GeneratedCriteria<Criteria> {}

（3）添加OrCriteria和AndCriteria，用來記錄操作鏈

public abstract static class AbstractCriteria<E> extends GeneratedCriteria<E> {protected GeneratedCriteria root;protected Criterion first;public GeneratedCriteria getRoot() {return this.root;}public Criterion getFirst() {return this.first;}public AbstractCriteria(GeneratedCriteria root, Criterion criterion) {this.root = root;this.first = criterion;}protected void addRoot(int currentIndex) {Criterion criterion = this.first;if (currentIndex > 0) {criterion = criteria.get(currentIndex - 1);}int index = root.criteria.indexOf(criterion);root.criteria.add(index + 1, criteria.get(currentIndex));if(root instanceof AbstractCriteria){((AbstractCriteria)root).addRoot(index + 1);}}@Overrideprotected void addCriterion(String condition) {super.addCriterion(condition);addRoot(criteria.size() - 1);}@Overrideprotected void addCriterion(String condition, Object value, String property) {super.addCriterion(condition, value, property);addRoot(criteria.size() - 1);}@Overrideprotected void addCriterion(String condition, Object value1, Object value2, String property) {super.addCriterion(condition, value1, value2, property);addRoot(criteria.size() - 1);}@Overridepublic boolean isValid() {for (Criterion criterion : criteria) {if(!(criterion instanceof OpCriterion)){return true;}}return false;} }public static class OrCriteria extends AbstractCriteria<OrCriteria> {public OrCriteria(GeneratedCriteria root, Criterion criterion) {super(root, criterion);}public AndCriteria openAndCriteria() {AndCriterion andCriterion = new AndCriterion();this.criteria.add(andCriterion);this.addRoot(this.criteria.size() - 1);AndCriteria andCriteria = new AndCriteria(this, andCriterion);andCriterion.setCriteria(andCriteria);return andCriteria;} }public static class AndCriteria extends AbstractCriteria<AndCriteria> {public AndCriteria(GeneratedCriteria root, Criterion criterion) {super(root, criterion);}public OrCriteria openOrCriteria() {OrCriterion orCriterion = new OrCriterion();this.criteria.add(orCriterion);this.addRoot(this.criteria.size() - 1);OrCriteria orCriteria = new OrCriteria(this, orCriterion);orCriterion.setCriteria(orCriteria);return orCriteria;} }

（4）Criteria加泛型和生成入口or方法

public static class Criteria extends GeneratedCriteria<Criteria> {public OrCriteria openOrCriteria() {OrCriterion orCriterion = new OrCriterion();this.criteria.add(orCriterion);OrCriteria orCriteria = new OrCriteria(this, orCriterion);orCriterion.setCriteria(orCriteria);return orCriteria;} }

（5）改Example.applyWhere方法

java.util.Stack<Criterion> stack = new java.util.Stack();for (int j = 0; j <= criterions.size(); j++) {if (j == criterions.size()) {for (Criterion c : stack) {sb.append(")");}stack.clear();continue;}Criterion criterion = criterions.get(j);if (criterion instanceof ManExample.OpCriterion) {ManExample.OpCriterion opCriterion = (ManExample.OpCriterion) criterion;if (opCriterion.getCriteria().isValid()) {if(!stack.isEmpty()){Criterion sCriterion = stack.peek();ManExample.OpCriterion sOpCriterion = (ManExample.OpCriterion) sCriterion;ManExample.AbstractCriteria abstractCriteria = sOpCriterion.getCriteria();List<Criterion> criterionList = abstractCriteria.getAllCriteria();int index = criterionList.indexOf(criterion);if (index < 0) {stack.pop();sb.append(")");j--;continue;}}stack.add(criterion);ManExample.GeneratedCriteria root = opCriterion.getCriteria().getRoot();Criterion first = opCriterion.getCriteria().getFirst();List<Criterion> rootCriterion = root.getAllCriteria();int firstIndex = rootCriterion.indexOf(first);if (firstIndex > 0) {for (int z = firstIndex - 1; z >= 0; z--) {Criterion prev = rootCriterion.get(z);if (prev instanceof ManExample.OpCriterion) {if (((ManExample.OpCriterion) prev).getCriteria().isValid()) {break;}} else {if(root instanceof ManExample.OrCriteria) {sb.append(" or ");}else {sb.append(" and ");}break;}}}sb.append("(");}continue;}if (j == 0) {//do nothing} else if (stack.isEmpty()) {sb.append(" and ");} else if (stack.peek() instanceof ManExample.OpCriterion) {ManExample.OpCriterion opCriterion = (ManExample.OpCriterion) stack.peek();ManExample.AbstractCriteria abstractCriteria = opCriterion.getCriteria();List<Criterion> criterionList = abstractCriteria.getAllCriteria();int index = criterionList.indexOf(criterion);if (index == 0) {//do nothing} else if (index > 0) {if (opCriterion instanceof ManExample.AndCriterion) {sb.append(" and ");} else {sb.append(" or ");}} else {stack.pop();sb.append(")");j--;continue;}}

（6） xml更改，加XmlCriteria類和轉換方法，更改xml邏輯

public static class Criteria extends GeneratedCriteria<Criteria> {public List<XmlCriterion> getXmlCriterion() {List<XmlCriterion> list = new java.util.LinkedList<>();List<Criterion> criterions = criteria;java.util.Stack<Criterion> stack = new java.util.Stack();for (int j = 0; j <= criterions.size(); j++) {if (j == criterions.size()) {for (Criterion c : stack) {list.add(new XmlCriterion(c, false, false, false, true));}stack.clear();continue;}Criterion criterion = criterions.get(j);if (criterion instanceof ManExample.OpCriterion) {ManExample.OpCriterion opCriterion = (ManExample.OpCriterion) criterion;if (opCriterion.getCriteria().isValid()) {if (!stack.isEmpty()) {Criterion sCriterion = stack.peek();ManExample.OpCriterion sOpCriterion = (ManExample.OpCriterion) sCriterion;ManExample.AbstractCriteria abstractCriteria = sOpCriterion.getCriteria();List<Criterion> criterionList = abstractCriteria.getAllCriteria();int index = criterionList.indexOf(criterion);if (index < 0) {stack.pop();list.add(new XmlCriterion(criterion, false, false, false, true));j--;continue;}}stack.add(criterion);boolean isFirst = true;boolean isAnd = false;ManExample.GeneratedCriteria root = opCriterion.getCriteria().getRoot();Criterion first = opCriterion.getCriteria().getFirst();List<Criterion> rootCriterion = root.getAllCriteria();int firstIndex = rootCriterion.indexOf(first);if (firstIndex > 0) {for (int z = firstIndex - 1; z >= 0; z--) {Criterion prev = rootCriterion.get(z);if (prev instanceof ManExample.OpCriterion) {if (((ManExample.OpCriterion) prev).getCriteria().isValid()) {break;}} else {isFirst = false;if (root instanceof ManExample.OrCriteria) {isAnd = false;} else {isAnd = true;}break;}}}list.add(new XmlCriterion(criterion, !isAnd, isFirst, true, false));}continue;}boolean isFirst = false;boolean isAnd = false;if (j == 0) {isFirst = true;} else if (stack.isEmpty()) {isAnd = true;} else if (stack.peek() instanceof ManExample.OpCriterion) {ManExample.OpCriterion opCriterion = (ManExample.OpCriterion) stack.peek();ManExample.AbstractCriteria abstractCriteria = opCriterion.getCriteria();List<Criterion> criterionList = abstractCriteria.getAllCriteria();int index = criterionList.indexOf(criterion);if (index == 0) {isFirst = true;} else if (index > 0) {if (opCriterion instanceof ManExample.AndCriterion) {isAnd = true;} else {isAnd = false;}} else {stack.pop();list.add(new XmlCriterion(criterion,false, false, false, true));j--;continue;}}list.add(new XmlCriterion(criterion, !isAnd, isFirst, false, false));}return list;} } public static class XmlCriterion {protected Criterion criterion;protected boolean or;protected boolean first;protected boolean start;protected boolean end;public XmlCriterion(Criterion criterion, boolean or, boolean first, boolean start, boolean end) {this.criterion = criterion;this.or = or;this.first = first;this.start = start;this.end = end;}public Criterion getCriterion() {return this.criterion;}public List<Criterion> getCriterions() {List<Criterion> list = new ArrayList<>();if (this.criterion != null) {list.add(this.criterion);}return list;}public boolean isOr() {return this.or;}public boolean isAnd() {return !this.isOr();}public boolean isFirst() {return this.first;}public boolean isStart() {return this.start;}public boolean isEnd() {return this.end;} } <foreach collection="criteria.xmlCriterion" item="xmlCriterion"><choose><when test="xmlCriterion.isStart()"><if test="!xmlCriterion.isFirst()"><if test="xmlCriterion.isOr()">or </if><if test="xmlCriterion.isAnd()">and </if></if>(</when><when test="xmlCriterion.isEnd()">)</when><otherwise><if test="xmlCriterion.isOr()"><if test="!xmlCriterion.isFirst()">or </if>1=1 </if><if test="xmlCriterion.isAnd() and xmlCriterion.isFirst()">1=1 </if><foreach collection="xmlCriterion.criterions" item="criterion"><choose>

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二、插件代碼

package com.mk.mybatisgenerator.plugins;import org.mybatis.generator.api.IntrospectedTable; import org.mybatis.generator.api.PluginAdapter; import org.mybatis.generator.api.dom.java.*; import org.mybatis.generator.api.dom.xml.Attribute; import org.mybatis.generator.api.dom.xml.Element; import org.mybatis.generator.api.dom.xml.TextElement; import org.mybatis.generator.api.dom.xml.XmlElement;import java.util.*;public class OrPlugin extends PluginAdapter {public OrPlugin() {super();}@Overridepublic boolean validate(List<String> warnings) {return true;}// <foreach collection="criteria.xmlCriterion" item="xmlCriterion">// <choose>// <when test="xmlCriterion.isStart()">// <if test="!xmlCriterion.isFirst()">// <if test="xmlCriterion.isOr()">// or// </if>// <if test="xmlCriterion.isAnd()">// and// </if>// </if>// (// </when>// <when test="xmlCriterion.isEnd()">// )// </when>// <otherwise>// <if test="xmlCriterion.isOr()">// <if test="!xmlCriterion.isFirst()">// or// </if>// 1=1// </if>// <if test="xmlCriterion.isAnd() and xmlCriterion.isFirst()">// 1=1// </if>// <foreach collection="xmlCriterion.criterions" item="criterion">// <choose>//xml where條件生成@Overridepublic boolean sqlMapExampleWhereClauseElementGenerated(XmlElement xmlElement, IntrospectedTable introspectedTable) {List<Element> elementList = new LinkedList<>();elementList.add(xmlElement);while (!elementList.isEmpty()) {Element parent = elementList.remove(0);if (!(parent instanceof XmlElement)) {continue;}XmlElement xmlParent = (XmlElement) parent;List<Element> elements = xmlParent.getElements();elementList.addAll(0, elements);for (int i = 0, len = elements.size(); i < len; i++) {Element ele = elements.get(i);if (!(ele instanceof XmlElement)) {continue;}XmlElement element = (XmlElement) ele;if (!element.getName().equals("foreach") || element.getAttributes().size() != 2) {continue;}Map<String, Attribute> attributeMap = new HashMap<>();for (Attribute attribute : element.getAttributes()) {attributeMap.put(attribute.getName(), attribute);}//找到<foreach collection="criteria.criteria" item="criterion">代碼if (attributeMap.containsKey("collection") && Objects.equals(attributeMap.get("collection").getValue(), "criteria.criteria")&& attributeMap.containsKey("item") && Objects.equals(attributeMap.get("item").getValue(), "criterion")) {//開始括號XmlElement startWhenElement = new XmlElement("when");{XmlElement ifElement = new XmlElement("if");ifElement.addAttribute(new Attribute("test", "!xmlCriterion.isFirst()"));XmlElement ifOrElement = new XmlElement("if");ifOrElement.addAttribute(new Attribute("test", "xmlCriterion.isOr()"));ifOrElement.addElement(new TextElement(" or "));XmlElement ifAndElement = new XmlElement("if");ifAndElement.addAttribute(new Attribute("test", "xmlCriterion.isAnd()"));ifAndElement.addElement(new TextElement(" and "));ifElement.addElement(ifOrElement);ifElement.addElement(ifAndElement);startWhenElement.addAttribute(new Attribute("test", "xmlCriterion.isStart()"));startWhenElement.addElement(ifElement);startWhenElement.addElement(new TextElement("("));}//結束括號XmlElement endWhenElement = new XmlElement("when");endWhenElement.addAttribute(new Attribute("test", "xmlCriterion.isEnd()"));endWhenElement.addElement(new TextElement(")"));//otherwiseXmlElement otherwiseElement = new XmlElement("otherwise");{XmlElement ifFirstElement = new XmlElement("if");ifFirstElement.addAttribute(new Attribute("test", "!xmlCriterion.isFirst()"));ifFirstElement.addElement(new TextElement(" or "));XmlElement ifOrElement = new XmlElement("if");ifOrElement.addAttribute(new Attribute("test", "xmlCriterion.isOr()"));ifOrElement.addElement(ifFirstElement);ifOrElement.addElement(new TextElement(" 1=1 "));XmlElement ifAndElement = new XmlElement("if");ifAndElement.addAttribute(new Attribute("test", "xmlCriterion.isAnd() and xmlCriterion.isFirst()"));ifAndElement.addElement(new TextElement(" 1=1 "));otherwiseElement.addElement(ifOrElement);otherwiseElement.addElement(ifAndElement);XmlElement foreachElement = new XmlElement("foreach");foreachElement.addAttribute(new Attribute("collection", "xmlCriterion.criterions"));foreachElement.addAttribute(new Attribute("item", "criterion"));for (Element e : element.getElements()) {foreachElement.addElement(e);}otherwiseElement.addElement(foreachElement);element.getElements().clear();}XmlElement orChooseElement = new XmlElement("choose");orChooseElement.addElement(startWhenElement);orChooseElement.addElement(endWhenElement);orChooseElement.addElement(otherwiseElement);element.getAttributes().clear();element.addAttribute(new Attribute("collection", "criteria.xmlCriterion"));element.addAttribute(new Attribute("item", "xmlCriterion"));element.addElement(orChooseElement);return true;}}}throw new RuntimeException("<foreach collection=\"criteria.criteria\" item=\"criterion\"> not exist");}//example類生成@Overridepublic boolean modelExampleClassGenerated(TopLevelClass topLevelClass,IntrospectedTable introspectedTable) {InnerClass generatedCriteria = generatedCriteria(topLevelClass);InnerClass criteria = criteria(topLevelClass);InnerClass abstractCriteria = addAbstractCriteria(topLevelClass);InnerClass orCriteria = addOrCriteria(topLevelClass, abstractCriteria);InnerClass andCriteria = addAndCriteria(topLevelClass, abstractCriteria);InnerClass opCriterion = addOpCriterion(topLevelClass);InnerClass orCriterion = addOrCriterion(topLevelClass, opCriterion);InnerClass andCriterion = addAndCriterion(topLevelClass, opCriterion);addCriteriaOrMethod(topLevelClass);//適配生成xml解析方法String type = introspectedTable.getContext().getJavaClientGeneratorConfiguration().getConfigurationType();if("XMLMAPPER".equalsIgnoreCase(type)) {InnerClass xmlCriterion = addXmlCriterion(topLevelClass);addXmlCriteriaMethod(topLevelClass, xmlCriterion);}return true;}//添加xml解析Criteria方法private void addXmlCriteriaMethod(TopLevelClass topLevelClass, InnerClass xmlCriterion) {InnerClass criteria = null;// first, find the Criteria inner classfor (InnerClass innerClass : topLevelClass.getInnerClasses()) {if ("Criteria".equals(innerClass.getType().getShortName())) { //$NON-NLS-1$criteria = innerClass;break;}}if (criteria == null) {throw new RuntimeException("Criteria not exist");}String topClassName = topLevelClass.getType().getShortName();Method getXmlCriterion = new Method();getXmlCriterion.setVisibility(JavaVisibility.PUBLIC);getXmlCriterion.setName("getXmlCriterion");getXmlCriterion.setReturnType(new FullyQualifiedJavaType("List<XmlCriterion>"));getXmlCriterion.addBodyLine("List<XmlCriterion> list = new java.util.LinkedList<>();");getXmlCriterion.addBodyLine("List<Criterion> criterions = criteria;");getXmlCriterion.addBodyLine("java.util.Stack<Criterion> stack = new java.util.Stack();");getXmlCriterion.addBodyLine("for (int j = 0; j <= criterions.size(); j++) {");getXmlCriterion.addBodyLine("if (j == criterions.size()) {");getXmlCriterion.addBodyLine("for (Criterion c : stack) {");getXmlCriterion.addBodyLine("list.add(new XmlCriterion(c, false, false, false, true));");getXmlCriterion.addBodyLine("}");getXmlCriterion.addBodyLine("stack.clear();");getXmlCriterion.addBodyLine("continue;");getXmlCriterion.addBodyLine("}");getXmlCriterion.addBodyLine("");getXmlCriterion.addBodyLine("Criterion criterion = criterions.get(j);");getXmlCriterion.addBodyLine("if (criterion instanceof " + topClassName + ".OpCriterion) {");getXmlCriterion.addBodyLine(topClassName + ".OpCriterion opCriterion = (" + topClassName + ".OpCriterion) criterion;");getXmlCriterion.addBodyLine("if (opCriterion.getCriteria().isValid()) {");getXmlCriterion.addBodyLine("");getXmlCriterion.addBodyLine("if (!stack.isEmpty()) {");getXmlCriterion.addBodyLine("Criterion sCriterion = stack.peek();");getXmlCriterion.addBodyLine(topClassName + ".OpCriterion sOpCriterion = (" + topClassName + ".OpCriterion) sCriterion;");getXmlCriterion.addBodyLine(topClassName + ".AbstractCriteria abstractCriteria = sOpCriterion.getCriteria();");getXmlCriterion.addBodyLine("List<Criterion> criterionList = abstractCriteria.getAllCriteria();");getXmlCriterion.addBodyLine("int index = criterionList.indexOf(criterion);");getXmlCriterion.addBodyLine("if (index < 0) {");getXmlCriterion.addBodyLine("stack.pop();");getXmlCriterion.addBodyLine("list.add(new XmlCriterion(criterion, false, false, false, true));");getXmlCriterion.addBodyLine("j--;");getXmlCriterion.addBodyLine("continue;");getXmlCriterion.addBodyLine("}");getXmlCriterion.addBodyLine("}");getXmlCriterion.addBodyLine("");getXmlCriterion.addBodyLine("stack.add(criterion);");getXmlCriterion.addBodyLine("boolean isFirst = true;");getXmlCriterion.addBodyLine("boolean isAnd = false;");getXmlCriterion.addBodyLine(topClassName + ".GeneratedCriteria root = opCriterion.getCriteria().getRoot();");getXmlCriterion.addBodyLine("Criterion first = opCriterion.getCriteria().getFirst();");getXmlCriterion.addBodyLine("List<Criterion> rootCriterion = root.getAllCriteria();");getXmlCriterion.addBodyLine("int firstIndex = rootCriterion.indexOf(first);");getXmlCriterion.addBodyLine("if (firstIndex > 0) {");getXmlCriterion.addBodyLine("for (int z = firstIndex - 1; z >= 0; z--) {");getXmlCriterion.addBodyLine("Criterion prev = rootCriterion.get(z);");getXmlCriterion.addBodyLine("if (prev instanceof " + topClassName + ".OpCriterion) {");getXmlCriterion.addBodyLine("if (((" + topClassName + ".OpCriterion) prev).getCriteria().isValid()) {");getXmlCriterion.addBodyLine("break;");getXmlCriterion.addBodyLine("}");getXmlCriterion.addBodyLine("} else {");getXmlCriterion.addBodyLine("isFirst = false;");getXmlCriterion.addBodyLine("if (root instanceof " + topClassName + ".OrCriteria) {");getXmlCriterion.addBodyLine("isAnd = false;");getXmlCriterion.addBodyLine("} else {");getXmlCriterion.addBodyLine("isAnd = true;");getXmlCriterion.addBodyLine("}");getXmlCriterion.addBodyLine("break;");getXmlCriterion.addBodyLine("}");getXmlCriterion.addBodyLine("}");getXmlCriterion.addBodyLine("}");getXmlCriterion.addBodyLine("list.add(new XmlCriterion(criterion, !isAnd, isFirst, true, false));");getXmlCriterion.addBodyLine("}");getXmlCriterion.addBodyLine("continue;");getXmlCriterion.addBodyLine("}");getXmlCriterion.addBodyLine("");getXmlCriterion.addBodyLine("boolean isFirst = false;");getXmlCriterion.addBodyLine("boolean isAnd = false;");getXmlCriterion.addBodyLine("if (j == 0) {");getXmlCriterion.addBodyLine("isFirst = true;");getXmlCriterion.addBodyLine("} else if (stack.isEmpty()) {");getXmlCriterion.addBodyLine("isAnd = true;");getXmlCriterion.addBodyLine("} else if (stack.peek() instanceof " + topClassName + ".OpCriterion) {");getXmlCriterion.addBodyLine(topClassName + ".OpCriterion opCriterion = (" + topClassName + ".OpCriterion) stack.peek();");getXmlCriterion.addBodyLine(topClassName + ".AbstractCriteria abstractCriteria = opCriterion.getCriteria();");getXmlCriterion.addBodyLine("List<Criterion> criterionList = abstractCriteria.getAllCriteria();");getXmlCriterion.addBodyLine("int index = criterionList.indexOf(criterion);");getXmlCriterion.addBodyLine("if (index == 0) {");getXmlCriterion.addBodyLine("isFirst = true;");getXmlCriterion.addBodyLine("} else if (index > 0) {");getXmlCriterion.addBodyLine("if (opCriterion instanceof " + topClassName + ".AndCriterion) {");getXmlCriterion.addBodyLine("isAnd = true;");getXmlCriterion.addBodyLine("} else {");getXmlCriterion.addBodyLine("isAnd = false;");getXmlCriterion.addBodyLine("}");getXmlCriterion.addBodyLine("} else {");getXmlCriterion.addBodyLine("stack.pop();");getXmlCriterion.addBodyLine("list.add(new XmlCriterion(criterion,false, false, false, true));");getXmlCriterion.addBodyLine("j--;");getXmlCriterion.addBodyLine("continue;");getXmlCriterion.addBodyLine("}");getXmlCriterion.addBodyLine("}");getXmlCriterion.addBodyLine("list.add(new XmlCriterion(criterion, !isAnd, isFirst, false, false));");getXmlCriterion.addBodyLine("}");getXmlCriterion.addBodyLine("");getXmlCriterion.addBodyLine("return list;");criteria.addMethod(getXmlCriterion);}//添加XmlCriterion類private InnerClass addXmlCriterion(TopLevelClass topLevelClass) {InnerClass innerClass = new InnerClass("XmlCriterion");innerClass.setStatic(true);innerClass.setVisibility(JavaVisibility.PUBLIC);Field criterion = new Field();criterion.setVisibility(JavaVisibility.PROTECTED);criterion.setType(new FullyQualifiedJavaType("Criterion"));criterion.setName("criterion");innerClass.addField(criterion);Field or = new Field();or.setVisibility(JavaVisibility.PROTECTED);or.setType(new FullyQualifiedJavaType("boolean"));or.setName("or");innerClass.addField(or);Field first = new Field();first.setVisibility(JavaVisibility.PROTECTED);first.setType(new FullyQualifiedJavaType("boolean"));first.setName("first");innerClass.addField(first);Field start = new Field();start.setVisibility(JavaVisibility.PROTECTED);start.setType(new FullyQualifiedJavaType("boolean"));start.setName("start");innerClass.addField(start);Field end = new Field();end.setVisibility(JavaVisibility.PROTECTED);end.setType(new FullyQualifiedJavaType("boolean"));end.setName("end");innerClass.addField(end);Method constructor = new Method();constructor.setVisibility(JavaVisibility.PUBLIC);constructor.setConstructor(true);constructor.setName("XmlCriterion");constructor.addParameter(new Parameter(new FullyQualifiedJavaType("Criterion"), "criterion"));constructor.addParameter(new Parameter(new FullyQualifiedJavaType("boolean"), "or"));constructor.addParameter(new Parameter(new FullyQualifiedJavaType("boolean"), "first"));constructor.addParameter(new Parameter(new FullyQualifiedJavaType("boolean"), "start"));constructor.addParameter(new Parameter(new FullyQualifiedJavaType("boolean"), "end"));constructor.addBodyLine("this.criterion = criterion;");constructor.addBodyLine("this.or = or;");constructor.addBodyLine("this.first = first;");constructor.addBodyLine("this.start = start;");constructor.addBodyLine("this.end = end;");innerClass.addMethod(constructor);Method getCriterion = new Method();getCriterion.setVisibility(JavaVisibility.PUBLIC);getCriterion.setName("getCriterion");getCriterion.setReturnType(new FullyQualifiedJavaType("Criterion"));getCriterion.addBodyLine("return this.criterion;");innerClass.addMethod(getCriterion);Method getCriterions = new Method();getCriterions.setVisibility(JavaVisibility.PUBLIC);getCriterions.setName("getCriterions");getCriterions.setReturnType(new FullyQualifiedJavaType("List<Criterion>"));getCriterions.addBodyLine("List<Criterion> list = new ArrayList<>();");getCriterions.addBodyLine("if (this.criterion != null) {");getCriterions.addBodyLine("list.add(this.criterion);");getCriterions.addBodyLine("}");getCriterions.addBodyLine("return list;");innerClass.addMethod(getCriterions);Method isOr = new Method();isOr.setVisibility(JavaVisibility.PUBLIC);isOr.setName("isOr");isOr.setReturnType(new FullyQualifiedJavaType("boolean"));isOr.addBodyLine("return this.or;");innerClass.addMethod(isOr);Method isAnd = new Method();isAnd.setVisibility(JavaVisibility.PUBLIC);isAnd.setName("isAnd");isAnd.setReturnType(new FullyQualifiedJavaType("boolean"));isAnd.addBodyLine("return !this.isOr();");innerClass.addMethod(isAnd);Method isFirst = new Method();isFirst.setVisibility(JavaVisibility.PUBLIC);isFirst.setName("isFirst");isFirst.setReturnType(new FullyQualifiedJavaType("boolean"));isFirst.addBodyLine("return this.first;");innerClass.addMethod(isFirst);Method isStart = new Method();isStart.setVisibility(JavaVisibility.PUBLIC);isStart.setName("isStart");isStart.setReturnType(new FullyQualifiedJavaType("boolean"));isStart.addBodyLine("return this.start;");innerClass.addMethod(isStart);Method isEnd = new Method();isEnd.setVisibility(JavaVisibility.PUBLIC);isEnd.setName("isEnd");isEnd.setReturnType(new FullyQualifiedJavaType("boolean"));isEnd.addBodyLine("return this.end;");innerClass.addMethod(isEnd);topLevelClass.addInnerClass(innerClass);return innerClass;}//更改GeneratedCriteria為泛型類private InnerClass generatedCriteria(TopLevelClass topLevelClass) {InnerClass innerClass1 = null;// first, find the Criteria inner classfor (InnerClass innerClass : topLevelClass.getInnerClasses()) {if ("GeneratedCriteria".equals(innerClass.getType().getShortName())) { //$NON-NLS-1$innerClass1 = innerClass;break;}}if (innerClass1 == null) {throw new RuntimeException("GeneratedCriteria not exist");}innerClass1.setVisibility(JavaVisibility.PUBLIC);innerClass1.addTypeParameter(new TypeParameter("Criteria"));return innerClass1;}//更改Criteria為繼承GeneratedCriteria泛型類private InnerClass criteria(TopLevelClass topLevelClass) {InnerClass criteria = null;// first, find the Criteria inner classfor (InnerClass innerClass : topLevelClass.getInnerClasses()) {if ("Criteria".equals(innerClass.getType().getShortName())) { //$NON-NLS-1$criteria = innerClass;break;}}if (criteria == null) {throw new RuntimeException("GeneratedCriteria not exist");}criteria.setSuperClass("GeneratedCriteria<Criteria>");return criteria;}//加OpCriterion抽象類private InnerClass addOpCriterion(TopLevelClass topLevelClass) {InnerClass innerClass = new InnerClass("OpCriterion");innerClass.setSuperClass("Criterion");innerClass.setStatic(true);innerClass.setAbstract(true);innerClass.setVisibility(JavaVisibility.PUBLIC);innerClass.addTypeParameter(new TypeParameter("E extends AbstractCriteria"));Field criteria = new Field();criteria.setVisibility(JavaVisibility.PROTECTED);criteria.setType(new FullyQualifiedJavaType("E"));criteria.setName("criteria");innerClass.addField(criteria);Method constructor = new Method();constructor.setVisibility(JavaVisibility.PUBLIC);constructor.setConstructor(true);constructor.setName("OpCriterion");constructor.addBodyLine("super(null);");innerClass.addMethod(constructor);Method setOrCriteria = new Method();setOrCriteria.setVisibility(JavaVisibility.PUBLIC);setOrCriteria.setName("setCriteria");setOrCriteria.addParameter(new Parameter(new FullyQualifiedJavaType("E"), "criteria"));setOrCriteria.addBodyLine("this.criteria = criteria;");innerClass.addMethod(setOrCriteria);Method getOrCriteria = new Method();getOrCriteria.setVisibility(JavaVisibility.PUBLIC);getOrCriteria.setName("getCriteria");getOrCriteria.setReturnType(new FullyQualifiedJavaType("E"));getOrCriteria.addBodyLine("return criteria;");innerClass.addMethod(getOrCriteria);topLevelClass.addInnerClass(innerClass);return innerClass;}//加AndCriterion類,包裝AndCriteriaprivate InnerClass addAndCriterion(TopLevelClass topLevelClass, InnerClass opCriterion) {InnerClass innerClass = new InnerClass("AndCriterion");innerClass.setSuperClass(opCriterion.getType().getShortName() + "<AndCriteria>");innerClass.setStatic(true);innerClass.setVisibility(JavaVisibility.PUBLIC);topLevelClass.addInnerClass(innerClass);return innerClass;}//加OrCriterion類,包裝OrCriteriaprivate InnerClass addOrCriterion(TopLevelClass topLevelClass, InnerClass opCriterion) {InnerClass innerClass = new InnerClass("OrCriterion");innerClass.setSuperClass(opCriterion.getType().getShortName() + "<OrCriteria>");innerClass.setStatic(true);innerClass.setVisibility(JavaVisibility.PUBLIC);topLevelClass.addInnerClass(innerClass);return innerClass;}//加AndCriteria類,繼承AbstractCriteria類private InnerClass addAndCriteria(TopLevelClass topLevelClass, InnerClass abstractCriteria) {FullyQualifiedJavaType criteria = new FullyQualifiedJavaType("GeneratedCriteria");InnerClass innerClass = new InnerClass("AndCriteria");innerClass.setSuperClass(abstractCriteria.getType().getShortName() + "<AndCriteria>");innerClass.setStatic(true);innerClass.setVisibility(JavaVisibility.PUBLIC);Method constructor = new Method();constructor.setVisibility(JavaVisibility.PUBLIC);constructor.setConstructor(true);constructor.setName("AndCriteria");constructor.addParameter(new Parameter(criteria, "root"));constructor.addParameter(new Parameter(new FullyQualifiedJavaType("Criterion"), "criterion"));constructor.addBodyLine("super(root, criterion);");innerClass.addMethod(constructor);Method or = new Method();or.setVisibility(JavaVisibility.PUBLIC);or.setName("openOrCriteria");or.setReturnType(new FullyQualifiedJavaType("OrCriteria"));or.addBodyLine("OrCriterion orCriterion = new OrCriterion();");or.addBodyLine("this.criteria.add(orCriterion);");or.addBodyLine("this.addRoot(this.criteria.size() - 1);");or.addBodyLine("OrCriteria orCriteria = new OrCriteria(this, orCriterion);");or.addBodyLine("orCriterion.setCriteria(orCriteria);");or.addBodyLine("return orCriteria;");innerClass.addMethod(or);topLevelClass.addInnerClass(innerClass);return innerClass;}//加OrCriteria類,繼承AbstractCriteria類private InnerClass addOrCriteria(TopLevelClass topLevelClass, InnerClass abstractCriteria) {FullyQualifiedJavaType criteria = new FullyQualifiedJavaType("GeneratedCriteria");InnerClass innerClass = new InnerClass("OrCriteria");innerClass.setSuperClass(abstractCriteria.getType() + "<OrCriteria>");innerClass.setStatic(true);innerClass.setVisibility(JavaVisibility.PUBLIC);Method constructor = new Method();constructor.setVisibility(JavaVisibility.PUBLIC);constructor.setConstructor(true);constructor.setName("OrCriteria");constructor.addParameter(new Parameter(criteria, "root"));constructor.addParameter(new Parameter(new FullyQualifiedJavaType("Criterion"), "criterion"));constructor.addBodyLine("super(root, criterion);");innerClass.addMethod(constructor);Method and = new Method();and.setVisibility(JavaVisibility.PUBLIC);and.setName("openAndCriteria");and.setReturnType(new FullyQualifiedJavaType("AndCriteria"));and.addBodyLine("AndCriterion andCriterion = new AndCriterion();");and.addBodyLine("this.criteria.add(andCriterion);");and.addBodyLine("this.addRoot(this.criteria.size() - 1);");and.addBodyLine("AndCriteria andCriteria = new AndCriteria(this, andCriterion);");and.addBodyLine("andCriterion.setCriteria(andCriteria);");and.addBodyLine("return andCriteria;");innerClass.addMethod(and);topLevelClass.addInnerClass(innerClass);return innerClass;}//加AbstractCriteria類private InnerClass addAbstractCriteria(TopLevelClass topLevelClass) {FullyQualifiedJavaType criteria = new FullyQualifiedJavaType("GeneratedCriteria");InnerClass innerClass = new InnerClass("AbstractCriteria");innerClass.addTypeParameter(new TypeParameter("E"));innerClass.setSuperClass("GeneratedCriteria<E>");innerClass.setAbstract(true);innerClass.setStatic(true);innerClass.setVisibility(JavaVisibility.PUBLIC);Field root = new Field();root.setVisibility(JavaVisibility.PROTECTED);root.setType(criteria);root.setName("root");innerClass.addField(root);Method getRoot = new Method();getRoot.setVisibility(JavaVisibility.PUBLIC);getRoot.setName("getRoot");getRoot.setReturnType(criteria);getRoot.addBodyLine("return this.root;");innerClass.addMethod(getRoot);Field first = new Field();first.setVisibility(JavaVisibility.PROTECTED);first.setType(new FullyQualifiedJavaType("Criterion"));first.setName("first");innerClass.addField(first);Method getFirst = new Method();getFirst.setVisibility(JavaVisibility.PUBLIC);getFirst.setReturnType(new FullyQualifiedJavaType("Criterion"));getFirst.setName("getFirst");getFirst.addBodyLine("return this.first;");innerClass.addMethod(getFirst);Method constructor = new Method();constructor.setVisibility(JavaVisibility.PUBLIC);constructor.setConstructor(true);constructor.setName("AbstractCriteria");constructor.addParameter(new Parameter(criteria, "root"));constructor.addParameter(new Parameter(new FullyQualifiedJavaType("Criterion"), "criterion"));constructor.addBodyLine("this.root = root;");constructor.addBodyLine("this.first = criterion;");innerClass.addMethod(constructor);Method addRoot = new Method();addRoot.setVisibility(JavaVisibility.PROTECTED);addRoot.setName("addRoot");addRoot.addParameter(new Parameter(FullyQualifiedJavaType.getIntInstance(), "currentIndex"));addRoot.addBodyLine("Criterion criterion = this.first;");addRoot.addBodyLine("if (currentIndex > 0) {");addRoot.addBodyLine("criterion = criteria.get(currentIndex - 1);");addRoot.addBodyLine("}");addRoot.addBodyLine("int index = root.criteria.indexOf(criterion);");addRoot.addBodyLine("root.criteria.add(index + 1, criteria.get(currentIndex));");addRoot.addBodyLine("");addRoot.addBodyLine("if(root instanceof AbstractCriteria){");addRoot.addBodyLine("((AbstractCriteria)root).addRoot(index + 1);");addRoot.addBodyLine("}");innerClass.addMethod(addRoot);Method addCriterion1 = new Method();addCriterion1.setVisibility(JavaVisibility.PROTECTED);addCriterion1.addAnnotation("@Override");addCriterion1.setName("addCriterion");addCriterion1.addParameter(new Parameter(FullyQualifiedJavaType.getStringInstance(), "condition"));addCriterion1.addBodyLine("super.addCriterion(condition);");addCriterion1.addBodyLine("addRoot(criteria.size() - 1);");innerClass.addMethod(addCriterion1);Method addCriterion3 = new Method();addCriterion3.setVisibility(JavaVisibility.PROTECTED);addCriterion3.addAnnotation("@Override");addCriterion3.setName("addCriterion");addCriterion3.addParameter(new Parameter(FullyQualifiedJavaType.getStringInstance(), "condition"));addCriterion3.addParameter(new Parameter(FullyQualifiedJavaType.getObjectInstance(), "value"));addCriterion3.addParameter(new Parameter(FullyQualifiedJavaType.getStringInstance(), "property"));addCriterion3.addBodyLine("super.addCriterion(condition, value, property);");addCriterion3.addBodyLine("addRoot(criteria.size() - 1);");innerClass.addMethod(addCriterion3);Method addCriterion4 = new Method();addCriterion4.setVisibility(JavaVisibility.PROTECTED);addCriterion4.addAnnotation("@Override");addCriterion4.setName("addCriterion");addCriterion4.addParameter(new Parameter(FullyQualifiedJavaType.getStringInstance(), "condition"));addCriterion4.addParameter(new Parameter(FullyQualifiedJavaType.getObjectInstance(), "value1"));addCriterion4.addParameter(new Parameter(FullyQualifiedJavaType.getObjectInstance(), "value2"));addCriterion4.addParameter(new Parameter(FullyQualifiedJavaType.getStringInstance(), "property"));addCriterion4.addBodyLine("super.addCriterion(condition, value1, value2, property);");addCriterion4.addBodyLine("addRoot(criteria.size() - 1);");innerClass.addMethod(addCriterion4);Method isValid = new Method();isValid.setVisibility(JavaVisibility.PUBLIC);isValid.addAnnotation("@Override");isValid.setName("isValid");isValid.setReturnType(FullyQualifiedJavaType.getBooleanPrimitiveInstance());isValid.addBodyLine("for (Criterion criterion : criteria) {");isValid.addBodyLine("if(!(criterion instanceof OpCriterion)){");isValid.addBodyLine("return true;");isValid.addBodyLine("}");isValid.addBodyLine("}");isValid.addBodyLine("return false;");innerClass.addMethod(isValid);topLevelClass.addInnerClass(innerClass);return innerClass;}//給Criteria加or方法private void addCriteriaOrMethod(TopLevelClass topLevelClass) {InnerClass criteria = null;// first, find the Criteria inner classfor (InnerClass innerClass : topLevelClass.getInnerClasses()) {if ("Criteria".equals(innerClass.getType().getShortName())) { //$NON-NLS-1$criteria = innerClass;break;}}if (criteria == null) {throw new RuntimeException("GeneratedCriteria not exist");}Method or = new Method();or.setVisibility(JavaVisibility.PUBLIC);or.setName("openOrCriteria");or.setReturnType(new FullyQualifiedJavaType("OrCriteria"));or.addBodyLine("OrCriterion orCriterion = new OrCriterion();");or.addBodyLine("this.criteria.add(orCriterion);");or.addBodyLine("OrCriteria orCriteria = new OrCriteria(this, orCriterion);");or.addBodyLine("orCriterion.setCriteria(orCriteria);");or.addBodyLine("return orCriteria;");criteria.addMethod(or);}// java.util.Stack<Criterion> stack = new java.util.Stack();// for (int j = 0; j <= criterions.size(); j++) {// if (j == criterions.size()) {// for (Criterion c : stack) {// sb.append(")");// }// stack.clear();// continue;// }// Criterion criterion = criterions.get(j);// if (criterion instanceof ManExample.OpCriterion) {// ManExample.OpCriterion opCriterion = (ManExample.OpCriterion) criterion;// if (opCriterion.getCriteria().isValid()) {// if(!stack.isEmpty()){// Criterion sCriterion = stack.peek();// ManExample.OpCriterion sOpCriterion = (ManExample.OpCriterion) sCriterion;// ManExample.AbstractCriteria abstractCriteria = sOpCriterion.getCriteria();// List<Criterion> criterionList = abstractCriteria.getAllCriteria();// int index = criterionList.indexOf(criterion);// if (index < 0) {// stack.pop();// sb.append(")");// j--;// continue;// }// }// stack.add(criterion);// ManExample.GeneratedCriteria root = opCriterion.getCriteria().getRoot();// Criterion first = opCriterion.getCriteria().getFirst();// List<Criterion> rootCriterion = root.getAllCriteria();// int firstIndex = rootCriterion.indexOf(first);// if (firstIndex > 0) {// for (int z = firstIndex - 1; z >= 0; z--) {// Criterion prev = rootCriterion.get(z);// if (prev instanceof ManExample.OpCriterion) {// if (((ManExample.OpCriterion) prev).getCriteria().isValid()) {// break;// }// } else {// if(root instanceof ManExample.OrCriteria) {// sb.append(" or ");// }else {// sb.append(" and ");// }// break;// }// }// }// sb.append("(");// }// continue;// }//// if (j == 0) {// //do nothing// } else if (stack.isEmpty()) {// sb.append(" and ");// } else if (stack.peek() instanceof ManExample.OpCriterion) {// ManExample.OpCriterion opCriterion = (ManExample.OpCriterion) stack.peek();// ManExample.AbstractCriteria abstractCriteria = opCriterion.getCriteria();// List<Criterion> criterionList = abstractCriteria.getAllCriteria();// int index = criterionList.indexOf(criterion);// if (index == 0) {// //do nothing// } else if (index > 0) {// if (opCriterion instanceof ManExample.AndCriterion) {// sb.append(" and ");// } else {// sb.append(" or ");// }// } else {// stack.pop();// sb.append(")");// j--;// continue;// }// }/*** 重寫ApplyWhere方法** @param method* @param topLevelClass* @param introspectedTable* @return*/@Overridepublic boolean providerApplyWhereMethodGenerated(Method method, TopLevelClass topLevelClass, IntrospectedTable introspectedTable) {List<String> lines = method.getBodyLines();boolean hasChange = false;for (int i = 0, len = lines.size(); i < len; i++) {String line = lines.get(i).trim();//找到boolean firstCriterion = true;行插入模式代碼if (line.matches("boolean\\s*firstCriterion\\s*=\\s*true;\\s*")) {lines.set(i, "java.util.Stack<Criterion> stack = new java.util.Stack();");hasChange = true;break;}}if (!hasChange) {throw new RuntimeException("boolean firstCriterion = true; not exist");}final String topClassName = introspectedTable.getExampleType().substring(introspectedTable.getExampleType().lastIndexOf('.') + 1);hasChange = false;for (int i = 0, len = lines.size(); i < len; i++) {String line = lines.get(i).trim();//找到boolean firstCriterion = true;行插入模式代碼if (line.matches("for\\s*\\(\\s*int\\s*j\\s*=\\s*0\\s*;\\s*j\\s*<\\s*criterions\\.size\\(\\)\\s*;\\s*j\\s*\\+\\+\\s*\\)\\s*\\{")) {lines.set(i, "for (int j = 0; j <= criterions.size(); j++) {");if (lines.get(i + 1).trim().matches("Criterion\\s*criterion\\s*=\\s*criterions\\.get\\(\\s*j\\s*\\)\\s*;")&& lines.get(i + 2).trim().matches("if\\s*\\(\\s*firstCriterion\\s*\\)\\s*\\{")&& lines.get(i + 3).trim().matches("firstCriterion\\s*=\\s*false\\s*;")&& lines.get(i + 4).trim().matches("}\\s*else\\s*\\{")&& lines.get(i + 5).trim().matches("sb\\.append\\(\\s*\"\\s+and\\s+\"\\s*\\);")&& lines.get(i + 6).trim().matches("}")) {} else {throw new RuntimeException("if (firstCriterion) { not exist");}List<String> handles = new ArrayList<>();handles.add("if (criterion instanceof " + topClassName + ".OpCriterion) {");handles.add(topClassName + ".OpCriterion opCriterion = (" + topClassName + ".OpCriterion) criterion;");handles.add("if (opCriterion.getCriteria().isValid()) {");handles.add("if(!stack.isEmpty()){");handles.add("Criterion sCriterion = stack.peek();");handles.add(topClassName + ".OpCriterion sOpCriterion = (" + topClassName + ".OpCriterion) sCriterion;");handles.add(topClassName + ".AbstractCriteria abstractCriteria = sOpCriterion.getCriteria();");handles.add("List<Criterion> criterionList = abstractCriteria.getAllCriteria();");handles.add("int index = criterionList.indexOf(criterion);");handles.add("if (index < 0) {");handles.add("stack.pop();");handles.add("sb.append(\")\");");handles.add("j--;");handles.add("continue;");handles.add("}");handles.add("}");handles.add("stack.add(criterion);");handles.add(topClassName + ".GeneratedCriteria root = opCriterion.getCriteria().getRoot();");handles.add("Criterion first = opCriterion.getCriteria().getFirst();");handles.add("List<Criterion> rootCriterion = root.getAllCriteria();");handles.add("int firstIndex = rootCriterion.indexOf(first);");handles.add("if (firstIndex > 0) {");handles.add("for (int z = firstIndex - 1; z >= 0; z--) {");handles.add("Criterion prev = rootCriterion.get(z);");handles.add("if (prev instanceof " + topClassName + ".OpCriterion) {");handles.add("if (((" + topClassName + ".OpCriterion) prev).getCriteria().isValid()) {");handles.add("break;");handles.add("}");handles.add("} else {");handles.add("if(root instanceof " + topClassName + ".OrCriteria) {");handles.add("sb.append(\" or \");");handles.add("}else {");handles.add("sb.append(\" and \");");handles.add("}");handles.add("break;");handles.add("}");handles.add("}");handles.add("}");handles.add("sb.append(\"(\");");handles.add("}");handles.add("continue;");handles.add("}");handles.add("");handles.add("if (j == 0) {");handles.add("//do nothing");handles.add("} else if (stack.isEmpty()) {");handles.add("sb.append(\" and \");");handles.add("} else if (stack.peek() instanceof " + topClassName + ".OpCriterion) {");handles.add(topClassName + ".OpCriterion opCriterion = (" + topClassName + ".OpCriterion) stack.peek();");handles.add(topClassName + ".AbstractCriteria abstractCriteria = opCriterion.getCriteria();");handles.add("List<Criterion> criterionList = abstractCriteria.getAllCriteria();");handles.add("int index = criterionList.indexOf(criterion);");handles.add("if (index == 0) {");handles.add("//do nothing");handles.add("} else if (index > 0) {");handles.add("if (opCriterion instanceof " + topClassName + ".AndCriterion) {");handles.add("sb.append(\" and \");");handles.add("} else {");handles.add("sb.append(\" or \");");handles.add("}");handles.add("} else {");handles.add("stack.pop();");handles.add("sb.append(\")\");");handles.add("j--;");handles.add("continue;");handles.add("}");handles.add("}");lines.remove(i + 6);lines.remove(i + 5);lines.remove(i + 4);lines.remove(i + 3);lines.remove(i + 2);lines.addAll(i + 2, handles);List<String> posts = new ArrayList<>();posts.add("if (j == criterions.size()) {");posts.add("for (Criterion c : stack) {");posts.add("sb.append(\")\");");posts.add("}");posts.add("stack.clear();");posts.add("continue;");posts.add("}");lines.addAll(i + 1, posts);hasChange = true;break;}}if (!hasChange) {throw new RuntimeException("boolean firstCriterion = true; not exist");}return true;}}

三、配置插件

<plugin type="com.mk.mybatisgenerator.plugins.OrPlugin"/> <!-- <plugin type="com.mk.mybatisgenerator.plugins.MySQLMethodPlugin">--> <!-- &lt;!&ndash;是否開啟生成list參數，默認true開啟&ndash;&gt;--> <!-- <property name="LIST_VALUE" value="true"/>--> <!-- &lt;!&ndash;value參數占位符自定義，默認##value##&ndash;&gt;--> <!-- <property name="VALUE_NAME" value="$"/>--> <!-- &lt;!&ndash;column列名占位符自定義，默認##column##&ndash;&gt;--> <!-- <property name="COLUMN_NAME" value="."/>--> <!-- &lt;!&ndash;其他定義，name為方法后綴名，屬性值為模式&ndash;&gt;--> <!-- <property name="isEmpty" value=". = ''"/>--> <!-- <property name="findInSet" value="find_in_set($, .)"/>--> <!-- </plugin>-->

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總結

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