springboot string转json

 [
    {source:0,target:4,relation:"籍贯",value:1.3},
    {source:4,target:5,relation:"舍友",value:1},
    {source:4,target:6,relation:"舍友",value:1},
    {source:4,target:7,relation:"舍友",value:1},
    {source:1,target:6,relation:"籍贯",value:2},
    {source:2,target:5,relation:"籍贯",value:0.9},
    {source:3,target:7,relation:"籍贯",value:1},
    {source:5,target:6,relation:"同学",value:1.6},
    {source:6,target:7,relation:"朋友",value:0.7},
    {source:6,target:8,relation:"职责",value:2}
]

        <!--string类型转化成json数组并输出-->
        <dependency>
            <groupId>net.sf.json-lib</groupId>
            <artifactId>json-lib</artifactId>
            <version>2.4</version>
            <classifier>jdk15</classifier>
        </dependency>

         String string = " [\n" +
                 "    {source:0,target:4,relation:\"籍贯\",value:1.3},\n" +
                 "    {source:4,target:5,relation:\"舍友\",value:1},\n" +
                 "    {source:4,target:6,relation:\"舍友\",value:1},\n" +
                 "    {source:4,target:7,relation:\"舍友\",value:1},\n" +
                 "    {source:1,target:6,relation:\"籍贯\",value:2},\n" +
                 "    {source:2,target:5,relation:\"籍贯\",value:0.9},\n" +
                 "    {source:3,target:7,relation:\"籍贯\",value:1},\n" +
                 "    {source:5,target:6,relation:\"同学\",value:1.6},\n" +
                 "    {source:6,target:7,relation:\"朋友\",value:0.7},\n" +
                 "    {source:6,target:8,relation:\"职责\",value:2}\n" +
                 "]";
        JSONArray jsonArray = JSONArray.fromObject(string);

String jsonString= queryParkSpaceService.execute(params);
/* jsonString为String类型的*/
/*{"totalSpace":500,"parkName":"天健物业","restSpace":500,"parkCode":"tjwy"}*/

//String转json
JSONObject kkk=new JSONObject();
    kkk.put("json0", jsonString);

//取值
  String restSpace=kkk.getJSONObject("json0").getString("restSpace");
  String totalSpace =   kkk.getJSONObject("json0").getString("totalSpace");
  String parkName =   kkk.getJSONObject("json0").getString("parkName");
  String parkCode = kkk.getJSONObject("json0").getString("parkCode");

//合并
JSONObject jsonObj = new JSONObject();
jsonObj.put("restSpace", restSpace);
jsonObj.put("totalSpace", totalSpace);
jsonObj.put("parkCode", parkCode);
jsonObj.put("parkName", parkName);