To partially update the properties of a javabean by using reflection to implement JSON data

The job encountered a requirement to update the Java object based on the return JSON. Read the data, wrote a tool class, and learned that reflection gets the set generic type. The JSON class library in the code is Fastjson

1  Public classJsonutil {2 3     /**4 * JavaBean properties are more than JSON, updating JavaBean the same name field values based on JSON5      *6      * @paramBean7      * @paramJSON8      * @param<T>9      */Ten      Public Static<T>voidPatchupdate (T Bean, jsonobject JSON)throwsException { Oneset<string> keys =Json.keyset (); Afield[] Fields =Bean.getclass (). Getdeclaredfields (); -          for(String key:keys) { -              for(Field field:fields) { the                 if(Field.getname (). Equals (key)) { -String value =json.getstring (key); -String type =Field.gettype (). toString (); -Field.setaccessible (true); +                     if(Type.endswith ("String")) { - Field.set (bean, value); +}Else if(Type.endswith ("int")) { A Field.set (Bean, Integer.parseint (value)); at}Else if(Type.endswith ("Double")) { - Field.set (Bean, double.parsedouble (value)); -}Else if(Type.endswith ("Date")) { -DateFormat Fmtdatetime =NewSimpleDateFormat ("Yyyy-mm-dd HH:mm:ss"); -Date Date =Fmtdatetime.parse (value); - Field.set (bean, date); in}Else if(Type.endswith ("List")) { -                         //gets the type of List first:java.util.list<e> toParameterizedtype pt =(Parameterizedtype) Field.getgenerictype (); +                         //Get generics: E -Class E = (Class) pt.getactualtypearguments () [0]; theList List =Jsonarray.parsearray (value, e); * field.set (bean, list); $                     }Panax Notoginseng                 } -             } the         } +     } A}

To partially update the properties of a javabean by using reflection to implement JSON data