Ajax request JSON Data exception: Nested exception is net.sf.json.JSONException:java.lang.reflect.InvocationTargetException] with root Cause

Ajax request JSON Data exception: Nested exception is net.sf.json.JSONException:java.lang.reflect.InvocationTargetException] with root Cause1. Exception reason: The requested JSON data contains the Java.util.date data type, but it is not formatted in the background 2. Workaround: Add Tool class Datejsonvalueprocessor

ImportJava.text.SimpleDateFormat;ImportNet.sf.json.JsonConfig;ImportNet.sf.json.processors.JsonValueProcessor; Public classDatejsonvalueprocessorImplementsjsonvalueprocessor{PrivateString format;  Publicdatejsonvalueprocessor (String format) { This. Format =format; }     PublicObject Processarrayvalue (object value, Jsonconfig jsonconfig) {return NULL; }     PublicObject Processobjectvalue (String key, object value, Jsonconfig jsonconfig) {if(Value = =NULL) {            return""; }        if(Valueinstanceofjava.sql.Timestamp) {String str=NewSimpleDateFormat (format). Format ((java.sql.Timestamp) value); returnstr; }        if(Valueinstanceofjava.util.Date) {String str=NewSimpleDateFormat (format). Format ((java.util.Date) value); returnstr; }        returnvalue.tostring (); }}

3. Then write to your controller

  jsonconfig cfg = new  jsonconfig ();  Cfg.registerjsonvalueprocessor (java.util.date.class,new datejsonvalueprocessor ("Yyyy-MM-dd" )); Jsonarray json =  jsonarray.fromobject (users, CFG);     

    @RequestMapping ("/getalljsonuser")    publicvoid  Getalljsonuser ( HttpServletResponse response) {        List<User> users = userservice.listall ();        System.out.println (users);         New jsonconfig ();          Cfg.registerjsonvalueprocessor (java.util.Date. class,new datejsonvalueprocessor ("Yyyy-mm-dd"));           = jsonarray.fromobject (users, CFG);        Jsonutils.ajaxjson (json.tostring (), response);    }

OK, problem solving

Ajax Request JSON data exception: Nested exception is net.sf.json.JSONException:java.lang.reflect.InvocationTargetException] with Root cause