Detailed explanation of the two ways springmvc receives json objects

I recently learned two ways of receiving json objects in springmvc, and now I have sorted them out, as follows:

1. Receive in the entity class way

Front-end ajax submission data:

function fAddObj() {
  var obj = {};
  obj['objname'] = "obj";
  obj['pid'] = 1 ;
 
  $.ajax({
    url: 'admin/Obj/addObj.do',
    method: 'post',
    contentType: 'application/json', // 这句不加出现415错误:Unsupported Media Type
    data: JSON.stringify(obj), // 以json字符串方式传递
    success: function(data) {
      console.log("success...");
    },
    error: function(data) {
      console.log("error...");
    }
  });
}

springmvc Receive in the form of model object:

@Controller
@RequestMapping("/admin/Obj")
public class ObjAction {
  // 注入操作类
  @Autowired
  private ObjService objService ;
 
  @RequestMapping(value = "/addObj")
  @ResponseBody
  public String addObj(@RequestBody Obj obj) {
    this.objService.insertObj(cate);
    return "success";
  }
}

2. Receive as Map

@Controller
@RequestMapping("/admin/Obj")
public class ObjAction {
  /**
   * 前端操作与上面相同
   * @return
   */
  @RequestMapping(value = "/updateAttr")
  @ResponseBody
  public String updateAttr(@RequestBody Map<String, String> map) {
    if(map.containsKey("id"){
      Integer id = Integer.parseInt(map.get("id"));
    }
    if(map.containsKey("objname"){
      String objname = map.get("objname").toString();
    }
    if(map.containsKey("pid"){
      Integer pid = Integer.parseInt(map.get("pid"));
    }
    // 操作 ...
    return "success";
  }
}

The above is the entire content of this article. I hope it will be helpful to everyone's learning. I hope everyone will support the PHP Chinese website.

For more detailed explanations of the two ways springmvc receives json objects, please pay attention to the PHP Chinese website for related articles!