java将json字符串转成List/Map实例

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java调用接口时候，经常需要对json字符串进行操作，下面这个例子就是将json字符串转成java的List/Map

package com.test.jsonToMap;import java.util.List;import java.util.Map;import java.util.Map.Entry;import net.sf.json.JSONArray;import net.sf.json.JSONObject;/** * 将json字符串 转成 List/Map */public class JsonToMap {public static void main(String[] args) {// JSONArrayString jsonArrayData = "[{\"a1\":\"12\",\"b1\":\"112\"},{\"a2\":\"12\",\"b2\":\"112\"}]";JSONArray jsonArray = JSONArray.fromObject(jsonArrayData);List<Map<String, Object>> mapListJson = (List) jsonArray;for (int i = 0; i < mapListJson.size(); i++) {Map<String, Object> obj = mapListJson.get(i);for (Entry<String, Object> entry : obj.entrySet()) {String strkey1 = entry.getKey();Object strval1 = entry.getValue();System.out.println("key:" + strkey1 + "  -->  value:" + strval1);}}System.out.println("=======");// JSONObjectString jsonObjectData = "{\"data1\":{\"a1\":\"12\",\"b1\":\"112\"},\"data2\":{\"a2\":\"12\",\"b2\":\"112\"}}";JSONObject jsonObject = JSONObject.fromObject(jsonObjectData);Map<String, Object> mapJson = JSONObject.fromObject(jsonObject);for (Entry<String, Object> entry : mapJson.entrySet()) {Object strval1 = entry.getValue();JSONObject jsonObjectStrval1 = JSONObject.fromObject(strval1);Map<String, Object> mapJsonObjectStrval1 = JSONObject.fromObject(jsonObjectStrval1);for (Entry<String, Object> entry1 : mapJsonObjectStrval1.entrySet()) {System.out.println("key:" + entry1.getKey() + "  -->  value:"+ entry1.getValue());}}}}

用的jar包
json-lib-2.3-jdk15.jar

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