Json字符串-List<Map> 转换

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net.sf.json包

import java.util.List;import java.util.Map;import java.util.Map.Entry;import net.sf.json.JSONArray;@SuppressWarnings({ "unchecked", "rawtypes" })public class StringJson2ListMap {    public static void main(String[] args) {        String jsonArrayData="[{\"a1\":\"12\",\"b1\":\"112\",\"c1\":\"132\",\"d1\":\"134\"},{\"a2\":\"12\",\"b2\":\"112\",\"c2\":\"132\",\"d2\":\"134\"},{\"a3\":\"12\",\"b3\":\"112\",\"c3\":\"132\",\"d3\":\"134\"}]";          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+"\n");              }          }      }}

如果用的是com.alibaba.fastjson这个包

private static void parseMap() {// TODO Auto-generated method stub    String line = "[{\"url\":\"http://yjj-img-main.oss-cn-hangzhou.aliyuncs.com/b07fdab2-e8b7-489e-aac5-054f0294bb59.jpg\"},{\"url\":\"http://yjj-img-main.oss-cn-hangzhou.aliyuncs.com/380d74d5-02ec-464c-9dc9-0e0f2cae7efb.jpg\"}]";    JSONArray jsonArray = JSON.parseArray(line);    for (Object object : jsonArray) {        JSONObject jsonObject = (JSONObject) object;        System.out.println(jsonObject.get("url"));    }}

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