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struts2综合例子--------拦截器（登陆检查，日志记录），校验validate，

發布時間：2024/8/26 编程问答 46 豆豆

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列表Action

package he.action;import he.dao.UserDAO;import java.sql.SQLException; import java.util.LinkedList; import java.util.List;public class ListAction {private List<User> users = new LinkedList<User>();public List<User> getUsers() {return users;}public void setUsers(List<User> users) {this.users = users;}public String list(){System.out.print("list");UserDAO dao = new UserDAO();try {users = dao.list();} catch (SQLException e) {// TODO Auto-generated catch block e.printStackTrace();return "error";}return "success";}} View Code

UserAction ------delete ? add ? ?see方法

package he.action;import java.sql.SQLException;import com.opensymphony.xwork2.ActionSupport;import he.dao.UserDAO;public class UserAction extends ActionSupport{private User user;private String pwd;public String getPwd() {return pwd;}public void setPwd(String pwd) {this.pwd = pwd;}public User getUser() {return user;}public void setUser(User user) {this.user = user;}public void validateAdd() {// TODO Auto-generated method stubsuper.validate();if(user.name==null||"".equals(user.name)){this.addFieldError("name", "name can not be null");}if(user.name.length()>20){this.addFieldError("name", "name too long");}if(user.pwd==null||"".equals(user.pwd)){this.addFieldError("pwd", "pwd can not be null");}if(!user.pwd.equals(pwd)){this.addFieldError("pwd", "pwds are not same");}if(user.name.equals(user.pwd)){this.addFieldError("pwd", "name is same to pwd,too dangerous");}}public String add(){UserDAO dao = new UserDAO();try {dao.add(user);} catch (SQLException e) {// TODO Auto-generated catch block e.printStackTrace();return "error";}return "add";}public String delete(){System.out.print("delete in");UserDAO dao = new UserDAO();try {dao.delete(user.getId());} catch (SQLException e) {// TODO Auto-generated catch block e.printStackTrace();return "errror";}return "delete";}public String see(){UserDAO dao = new UserDAO();try {user = dao.findById(user.id);} catch (SQLException e) {// TODO Auto-generated catch block e.printStackTrace();return "error";}System.out.println("see over");return "see";}} View Code

LoginAction

package he.action;import java.util.Map;import com.opensymphony.xwork2.ActionContext; import com.opensymphony.xwork2.ActionSupport;public class LoginAction extends ActionSupport{private User user;public User getUser() {return user;}public void setUser(User user) {this.user = user;}public String execute(){if("scott".equals(user.name)&&"1234".equals(user.pwd)){Map<String,Object> session = ActionContext.getContext().getSession();session.put("user", user);return "success";}this.addFieldError("userOrPwd", "username or pwd error");return "login";}} View Code

UserDAO

package he.dao;import he.action.User; import he.util.DBUtil;import java.sql.Connection; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; import java.util.ArrayList; import java.util.List;public class UserDAO {Connection conn=null;PreparedStatement prep=null;ResultSet res = null;List<User> lu=null;//寫一個函數將String[]轉成Stringpublic static String arrToStr(String[] sarr){String s = "";for(int i = 0;i<sarr.length;i++){s=s+sarr[i]+",";}return s;}public int add(User user) throws SQLException{conn=DBUtil.getConnetion();prep = conn.prepareStatement("insert into s_user values(?,?,?,?,?,?)");prep.setString(1, user.getName());prep.setString(2, user.getPwd());prep.setString(3, user.getSex());prep.setInt(4, user.getAge());prep.setString(5, user.getEmail());prep.setString(6,arrToStr(user.getLoves()));int i = prep.executeUpdate();return i;}public void delete(int id) throws SQLException{conn=DBUtil.getConnetion();prep = conn.prepareStatement("delete from s_user where id=?");prep.setInt(1, id);prep.executeUpdate();DBUtil.close();}public User findById(int id) throws SQLException{User user = new User();conn=DBUtil.getConnetion();prep = conn.prepareStatement("select * from s_user where id=?");prep.setInt(1, id);res=prep.executeQuery();if(res.next()){user.setId(res.getInt(1));user.setName(res.getString(2));user.setPwd(res.getString(3));user.setSex(res.getString(4));user.setAge(res.getInt(5));user.setEmail(res.getString(6));user.setLoves(res.getString(7).split(","));}DBUtil.close();return user;}public List<User> list() throws SQLException{lu = new ArrayList<User>();User user = null;conn=DBUtil.getConnetion();prep = conn.prepareStatement("select * from s_user");res=prep.executeQuery();while(res.next()){user = new User();user.setId(res.getInt(1));user.setName(res.getString(2));user.setPwd(res.getString(3));user.setSex(res.getString(4));user.setAge(res.getInt(5));user.setEmail(res.getString(6));user.setLoves(res.getString(7).split(","));lu.add(user);}DBUtil.close();return lu;}} View Code

User

package he.action;public class User {int id;String name;String pwd;String sex;int age;String email;String[] loves;public int getId() {return id;}public void setId(int id) {this.id = id;}public String getName() {return name;}public void setName(String name) {this.name = name;}public String getPwd() {return pwd;}public void setPwd(String pwd) {this.pwd = pwd;}public String getSex() {return sex;}public void setSex(String sex) {this.sex = sex;}public int getAge() {return age;}public void setAge(int age) {this.age = age;}public String getEmail() {return email;}public void setEmail(String email) {this.email = email;}public String[] getLoves() {return loves;}public void setLoves(String[] loves) {this.loves = loves;}} View Code

日志記錄攔截器LoggerInterceptor

package he.interceptor;import he.action.User;import java.io.FileWriter; import java.io.PrintWriter; import java.text.DateFormat; import java.text.SimpleDateFormat; import java.util.Date; import java.util.Map;import com.opensymphony.xwork2.ActionInvocation; import com.opensymphony.xwork2.interceptor.AbstractInterceptor;public class LoggerIntercptor extends AbstractInterceptor{@Overridepublic String intercept(ActionInvocation invocation) throws Exception {// TODO Auto-generated method stubString result = invocation.invoke();//調用后續的攔截器或者ActionString msg="";Map<String,Object> session = invocation.getInvocationContext().getSession();if(session.get("user")!=null){msg+=(((User)session.get("user")).getName());}Date date=new Date();DateFormat format=new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");String time=format.format(date);String actionName = invocation.getProxy().getActionName();String methodName = invocation.getProxy().getMethod();FileWriter fw = new FileWriter("d:/demo.log",true);PrintWriter pw = new PrintWriter(fw);msg=msg+actionName+" "+methodName+time;pw.println(msg);pw.close();return result;}} View Code

登陸檢查攔截器LoginInterceptor

package he.interceptor;import java.util.Map;import com.opensymphony.xwork2.ActionInvocation; import com.opensymphony.xwork2.interceptor.MethodFilterInterceptor;public class LoginInterceptor extends MethodFilterInterceptor{@Overrideprotected String doIntercept(ActionInvocation invocation) throws Exception {// TODO Auto-generated method stub//登陸檢查Map<String,Object> session = invocation.getInvocationContext().getSession();Object user = (Object)session.get("user");if(user==null){return "login";}return invocation.invoke();//調用add,delete,see 方法 }} View Code

sruts.xml是這么配置的：

<?xml version="1.0" encoding="UTF-8" ?><!DOCTYPE struts PUBLIC"-//Apache Software Foundation//DTD Struts Configuration 2.1.7//EN""http://struts.apache.org/dtds/struts-2.1.7.dtd"><struts><package name="strudemo1" extends="struts-default"><interceptors><interceptor name="mylogger" class="he.interceptor.LoggerIntercptor"></interceptor><interceptor name="mylogin" class="he.interceptor.LoginInterceptor"><param name="includeMethod">delete</param></interceptor></interceptors><global-results><result name="login">/login.jsp</result></global-results><action name="opt_*" method="{1}" class="he.action.ListAction"><interceptor-ref name="mylogin"/><interceptor-ref name="mylogger"/><interceptor-ref name="defaultStack"/><result name='success' type='dispatcher'>/WEB-INF/ok.jsp</result></action><action name="login" class="he.action.LoginAction"><result type="redirectAction">opt_list</result><result name="login">/login.jsp</result></action><action name="user_*" method="{1}" class="he.action.UserAction"><interceptor-ref name="mylogin"/><interceptor-ref name="mylogger"/><interceptor-ref name="defaultStack"/><result name='see' type='dispatcher'>/index.jsp</result><result name='delete' type='redirectAction'>opt_list</result><result name='add' type='redirectAction'>opt_list</result><result name="input">/add.jsp</result></action></package> </struts> View Code

ok.jsp

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %> <%@taglib uri="/struts-tags" prefix="s" %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html><head><base href="<%=basePath%>"><title>My JSP 'ok.jsp' starting page</title><meta http-equiv="pragma" content="no-cache"><meta http-equiv="cache-control" content="no-cache"><meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"><meta http-equiv="description" content="This is my page"> <style type="text/css"> table.imagetable {font-family: verdana,arial,sans-serif;font-size:11px;color:#333333;border-width: 1px;border-color: #999999;border-collapse: collapse; } table.imagetable th {background:#b5cfd2 url('cell-blue.jpg');border-width: 1px;padding: 8px;border-style: solid;border-color: #999999; } table.imagetable td {background:#dcddc0 url('cell-grey.jpg');border-width: 1px;padding: 8px;border-style: solid;border-color: #999999; } </style><script type="text/javascript"><script type="text/javascript">function getXmlHttpRequest(){var xmlHttpRequest = null;if ((typeof XMLHttpRequest) != 'undefined') {//非ie瀏覽器 xmlHttpRequest = new XMLHttpRequest();}else {//ie瀏覽器 xmlHttpRequest = new ActiveXObject('Microsoft.XMLHttp');}return xmlHttpRequest;}function seeUser(obj){var xmlReq = getXmlHttpRequest();xmlReq.open('post','see.action',true);alert(obj);xmlReq.setRequestHeader("Content-Type","application/x-www-form-urlencoded");xmlReq.onreadystatechange=function(){if(xmlReq.readyState == 4){var rsTxt = xmlReq.responseText;//alert(rsTxt);var ss = rsTxt.evalJSON();}}</script></head><body><table class="imagetable"> <tr><th>id</th><th>name</th><th>pwd</th><th>sex</th><th>age</th><th>email</th><th>loves</th><th>somedo</th> </tr> <s:iterator value="users" var="user" status="stat"> <tr><td ><s:property value="#user.id"/></td><td ><s:property value="#user.name"/></td><td><s:property value="#user.pwd"/></td><td ><s:property value="#user.age"/></td><td ><s:property value="#user.sex"/></td><td><s:property value="#user.email"/></td><td><s:property value="#user.loves"/></td><td><a href='user_see?user.id=<s:property value="#user.id"/>'>see</a>&nbsp<a href='user_delete?user.id=<s:property value="#user.id"/>'>delete</a>&nbsp<a href='add.jsp'>add</a>&nbsp</td> </tr> </s:iterator> </table><dir id="d1" ></dir></body> </html> View Code

seeuser.jsp

add.jsp

index.jsp

<%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%> <% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %> <%@taglib uri="/struts-tags" prefix="s" %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html><head><base href="<%=basePath%>"><title>My JSP 'index.jsp' starting page</title><meta http-equiv="pragma" content="no-cache"><meta http-equiv="cache-control" content="no-cache"><meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"><meta http-equiv="description" content="This is my page"></head><body><s:actionerror/><s:form action="login" ><s:textfield name="user.name" label="name" labelposition="left"></s:textfield><s:fielderror fieldName="userOrPwd"></s:fielderror><br><s:textfield name="user.pwd" label="pwd" labelposition="left"></s:textfield><s:submit value="OK"></s:submit></s:form></body> </html> View Code

轉載于:https://www.cnblogs.com/hzzhero/p/5087466.html

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