java Json 串中的转义字符？

Question

java Json 串中的转义字符

Answer 1

一：解析普通json1：不带转化字符格式{"type":"ONLINE_SHIPS","message":{"currentTime":1400077615368,"direction":0,"id":1,"latitude":29.5506,"longitude":106.6466}}JSONObject jsonObject = new JSONObject(jsonstr).getJSONObject("message");System.out.println("currentTime:"+jsonObject.get("currentTime"));System.out.println("direction:"+jsonObject.get("direction"));System.out.println("latitude:"+jsonObject.get("latitude"));System.out.println("longitude:"+jsonObject.get("longitude"));jsonarrayJSONObject jo = ja.getJSONArray("cargoList").getJSONObject(0);2:带转义字符的json格式{"type":"ONLINE_SHIPS","message":"{\"currentTime\":1400077615368,\"direction\":0,\"id\":1,\"latitude\":29.5506,\"longitude\":106.6466}"}其实也很简单，先把它转化成字符串就可以了JSONObject jsonObject = new JSONObject(jsonstr);//先通过字符串的方式得到,转义字符自然会被转化掉String jsonstrtemp = jsonObject.getString("message");System.out.println("message:"+jsonstrtemp);jsonObject = new JSONObject(jsonstrtemp);System.out.println("currentTime:"+jsonObject.get("currentTime"));System.out.println("direction:"+jsonObject.get("direction"));System.out.println("latitude:"+jsonObject.get("latitude"));System.out.println("longitude:"+jsonObject.get("longitude"));二：遍历Json对象JSONObject ports = ja.getJSONObject("ports");Iterator<String> keys = ports.keys();while(keys.hasNext()){String key=keys.next();String value = ports.getString(key);}三：使用Gjson,json与对象相互转化使用Gson轻松将java对象转化为json格式String json = gson.toJson(Object);//得到json形式的字符串User user = gson.fromJson(json,User.class);//得到对象&nbsp;