import java.util.Collection; import java.util.HashMap; import java.util.Map; import java.util.Map.Entry;public class CheckParametersUtil {Map<String, Object> map = new HashMap<>();/*** 添加需要校驗的參數(shù)* @param object 實參* @param parameterName 參數(shù)名稱*/public CheckParametersUtil put(String parameterName,Object object) {map.put(parameterName, object);return this;}/*** 獲取CheckParametersUtil實例*/public static CheckParametersUtil getInstance(){return new CheckParametersUtil();}/*** 校驗*/public void checkParameter() throws Exception {for(Entry<String, Object> entry : map.entrySet()) {if(isEmptyTrim(entry.getValue())){throw new Exception("參數(shù)【" + entry.getKey() + "】為空" );}}}public String toString(Object object) {return object == null ? "" : object.toString();}public boolean isEmpty(Collection collection) {return collection == null || collection.isEmpty();}public boolean isEmpty(Map map) {return map == null || map.isEmpty();}public boolean isEmpty(String string) {return toString(string).isEmpty();}public boolean isEmptyTrim(String string) {return toString(string).trim().isEmpty();}public boolean isEmpty(Object object) {return toString(object).isEmpty();}public boolean isEmptyTrim(Object object) {return toString(object).trim().isEmpty();}public <T> boolean isEmpty(T[] array) {return array == null || array.length == 0;} }

校驗

public R addFileInfo(@RequestBody User user){try {CheckParametersUtil.getInstance().put(user.getId(),"id") //左邊的是參數(shù)值，右邊是參數(shù)名稱.put(user.getName(),"name").put(user.getSex(),"sex").checkParameter();return R.ok();}catch (Exception e){return R.error(e.getMessage());}}

結果

{"msg": "參數(shù)【name】為空","code": 500,"success": false }

總結

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