Java custom method transforms the JSON string submitted by the front end to the Jsonobject object

The front-end commits JSON string format data, and the Java backend receives the JSON string data through a custom method and translates it into a Jsonobject object, as the code is relegated to the Requestdata.java class:

public static Jsonobject Getrequestjsonobj (HttpServletRequest request) {InputStreamReader reader = null;    InputStream in = null;    String REQUSETSB = "";    StringBuffer sb = new StringBuffer ();        try {in = Request.getinputstream ();        reader = new InputStreamReader (in, "UTF-8");        char[] buffer = new char[1024];        int Len;        while (len = reader.read (buffer)) > 0) {sb.append (buffer, 0, Len);        }//system.out.println ("Request information:" + sb.tostring ());    REQUSETSB = Sb.tostring ();    } catch (Exception e) {e.printstacktrace ();            } finally {try {if (reader! = null) {reader.close ();        }} catch (IOException e) {e.printstacktrace ();            } try {if (in! = null) {in.close ();        }} catch (IOException e) {e.printstacktrace (); }} jsonobject Jsobj = Jsonobject.fromobject (requsetsb.tostring()); return jsobj;} public static Object Getrequestjsonobj (HttpServletRequest request, Class clazz) {Jsonobject Jsonobject = Getrequestjso    Nobj (Request);    Object obj = Jsonobject.tobean (Jsonobject, clazz); return obj;}

Called in the controller:

@RequestMapping ("/test") public void Test (HttpServletRequest request) {    Jsonobject obj = Requestdata.getrequestjsonobj (request);    String Usernameid = obj.getstring ("Usernameid");}

If you have an entity bean object, you can receive it in the following ways:

@RequestMapping ("/test") public void Test (HttpServletRequest request) {    User user = (user) Requestdata.getrequestjsonobj (Request, user.class);    String Usernameid = User.getusernameid ();}

Java custom method transforms the JSON string submitted by the front end to the Jsonobject object