System.out.println(request.getParameterMap().toString());//打印出来的为{name=[Ljava.lang.String;@452be322}也即是map的地址 System.out.println(map.toString());//打印出来的为{name=[Ljava.lang.String;@452be322}也就是地址,也即是map的地址 //将map转换成json格式的字符串后,在打印就是json字符...
1.String转Map Map infoMap=JSONObject.parseObject(info,Map.class); 2.String转json对象 JSONObject jsonObject=JSONObject.parseObject(data); 3.String转类对象 contractInfo=JSONObject.parseObject(contractStr, ContractInfo.class); 4.map转类对象 FindArchiveDto findArchiveDto1=JSON.parseObject(JSON.toJSONSt...
下面是使用原生Java库将JSON字符串转换为Map对象的代码示例: importjava.util.Map;importorg.json.JSONObject;publicclassJsonToMapExample{publicstaticvoidmain(String[]args){Stringjson="{\"name\":\"John\",\"age\":30,\"city\":\"New York\"}";// 创建JSONObject对象JSONObjectjsonObject=newJSONObject(...
public static void main(String[] args) { String jsonString = "{"name": "Alice", "age": 25}"; Gson gson = new Gson(); String json = gson.toJson(jsonString); System.out.println(json); } 在这段代码中,我们创建了一个String类型的数据 jsonString,然后使用Gson库将其转换为JSON格式的字符...
1、Map转json Map<String, Object> map = new HashMap<String, Object>(); JSONObject json = new JSONObject(map); 2、Map转String Map<String, Object> map = new HashMap<>(); String s = JSONObject.toJSONString(map); 3、JSON转String ...
mapToJson(){Map<String,String>map=newHashMap<>();map.put("age","18");map.put("name","小明");map.put("gender","男");String string=JSON.toJSONString(map);System.out.println(string);map.clear();String stringNull=JSON.toJSONString(map);System.out.println(stringNull);returnstring;}...
public static Map<String,Object> JsonToMap(JSONObject j){ Map<String,Object> map = new HashMap<>(); Iterator<String> iterator = j.keys(); while(iterator.hasNext()){ String key = (String)iterator.next(); Object value = j.get(key); map.put(key, value); } return map; } 发布者:...
public static void main(String[] args) { String jsonString = "{"name": "Bob", "age": 30}"; Gson gson = new Gson(); Type type = new TypeToken<Map>(){}.getType(); Map map = gson.fromJson(jsonString, type); System.out.println(map); ...
This technique only works for JsonObject instances, since JsonObject extends Map<String, JsonElement>. We can parse the JSON String, and then implicitly cast it to a Map after we’ve confirmed it is a JsonObject: fun jsonStringToMapWithKotlinx(json: String): Map<String, JsonElement> { ...
Json String转HashMap<String, String>非常容易,只要用Gson().toJson即可: val y = Gson().toJson(ids) 麻烦的是HashMap<String, String>转Json String,也就是在fromJson中,必须引入TypeToken val…