Spring mvc将json映射到pojo属性为null

Question

A Rest service is mapped on one url with some @RequestBody where i am mapping json to pojo. Pojo contains nested classes following is sample code.

@RequestMapping(value = "/saveExampleObject.html", method = RequestMethod.POST)
public @ResponseBody List<String> saveExampleObjectDefintion(@RequestBody ExampleObject exampleObject) throws DataAccessException,DataNotPersistException {
    List<String> msg = saveService.save(exampleObject);
    return msg;
}

and the object is like

class ExampleObject{
String name;
SubClass subClass;
.....
}

and json is

{
"name":"name",
"subClass":{
.....
}

I have configured spring mvc annotation and conversion is also happening. But some fields are null . I cross checked names of null field they are same as in json and pojo.

PS Only first fields are getting values in subclass.Thanks.

Answer 1

在你的json中你有subClass但在你的类中你有子类...区分大小写

Answer 2

Here the setters were not defined properly and hence there was an error. Spring MVC uses the setters to properly convert POJO to JSON and vice versa.