JSON String Conversion object error: MorphDynaBean cannot be cast to com. softri

JSON String Conversion object error: MorphDynaBean cannot be cast to com. softright. bean. testBean, the class has a set type attribute because JSONObject. toBean () converts a JSON string into a class defined by itself. When the attributes include List, Map, and ArrayList, the problem arises.

Error: MorphDynaBean cannot be cast to com. softright. bean. TestBean

 

Solution:

In JSONObject. toBean

If there is a set in the converted Class, you can first define Map <String, Class> classMap = new HashMap <String, Class> ();

Put in classMap the Set Name of the class you want to convert, such as: classMap. put ("data", StoDataInfo. class );

Of course, you can also put a collection class ("data", Map. class)

Add the parameter when toBean (), such as: ShenTongInfo stInfo = (ShenTongInfo) JSONObject. toBean (o, ShenTongInfo. class, classMap );

Specific instance

The Code is as follows:

Copy code

Public class JsonConvertorDemo { Public static void main (String [] args ){ B b1 = new B ("b1 "); Map <String, B> bMap = new HashMap <String, B> (); BMap. put ("key1", b1 ); A a1 = new A (bMap ); JSONObject jsonObject = JSONObject. fromObject (a1 ); String json = jsonObject. toString (); JsonObject = JSONObject. fromObject (json ); Map <String, Class> classMap = new HashMap <String, Class> (); ClassMap. put ("bMap", Map. class ); A1 = (A) JSONObject. toBean (jsonObject, A. class, classMap ); BMap = a1.getbMap (); System. out. println (bMap. get ("key1"). getB1 ()); } } Public class { Private Map <String, B> bMap = new HashMap <String, B> (); Public (){} Public A (Map <String, B> bMap ){ This. bMap = bMap; } Public Map <String, B> getbMap (){ Return bMap; } Public void setbMap (Map <String, B> bMap ){ This. bMap = bMap; } } Public class B { Private String b1; Public B (){} Public B (String b1 ){ This. b1 = b1; } Public String getB1 (){ Return b1; } Public void setB1 (String b1 ){ This. b1 = b1; } }