我们可以创建一个可以在 Spring Boot 中处理不同请求结构（JSON）的 REST API（单个端点）吗？

Question

我有一个要求，其中一个休息 API 必须处理不同的请求 json（30 多个不同的请求）。客户端可以发送任何 json 到这个端点，这个 API 应该能够处理请求。而且每个请求都会有唯一的 id。

例如： 请求 1：

{ “身份证”：“1”， “姓名”：“约翰”，

}

请求 2：

{ “身份证”：“2”， “姓名”：“约翰”， "姓氏":"cena", “性”：“F”，

}

请求 3：

{ “身份证”：“3”， "mobileNumber":"09XXXXXXX0", "电子邮件":"nick@yahoo.com",

}

请求 4：

{ “身份证”：“4”， “宠物狗”， “颜色：黑色”， “性”：“F”，

}

现在，如何读取这个 API 的 requestBody？我们可以像下面这样使用 JSONObject 或 JsonNode 吗？

@PostMapping("/save-details")
public String postDetails(@RequestBody JSONObject request) {
    return "";
}

@PostMapping("/save-details")
public String postDetails(@RequestBody JsonNode request) {
    return "";
}

提前感谢您的帮助！

Answer 1

一个简单的解决方案是将请求作为 json 字符串接受并使用 Object mapper 转换为所需的类型。

Answer 2

转换和动态输入正文的示例

package com.example.springmultirequest;

import org.json.JSONObject;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RestController;

import java.util.Map;

@RestController
public class DetailController {

    Logger logger = LoggerFactory.getLogger(DetailController.class);

    @PostMapping("/save-details")
    public ResponseEntity<String> postDetails(@RequestBody Map<String, Object> request) {

        JSONObject jsonObject = new JSONObject(request);
        Integer idRequest = Integer.valueOf(jsonObject.get("Id").toString());
        logger.info("idRequest: {}", idRequest);

        switch (idRequest) {
            case 1:
                logger.info("Name: {}", jsonObject.get("name"));
                break;
            case 2:
                logger.info("Name: {}", jsonObject.get("name"));
                logger.info("Last name: {}", jsonObject.get("lastname"));
                break;
            case 3:
                logger.info("mobileNumber: {}", jsonObject.get("mobileNumber"));
                logger.info("email: {}", jsonObject.get("email"));
                break;
            case 4:
                logger.info("pet: {}", jsonObject.get("pet"));
                logger.info("color: {}", jsonObject.get("color"));
                logger.info("sex: {}", jsonObject.get("sex"));
                break;
            default:
                return ResponseEntity
                        .badRequest()
                        .body("Identification not recognized");
        }

        return ResponseEntity.ok().build();
    }
}

示例响应：

      .   ____          _            __ _ _
     /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
    ( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
     \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
      '  |____| .__|_| |_|_| |_\__, | / / / /
     =========|_|==============|___/=/_/_/_/
     :: Spring Boot ::                (v2.4.3)
    o.s.web.servlet.DispatcherServlet        : Completed initialization in 0 ms
    2021-02-27 12:52:37.406  INFO 17984 --- [nio-8080-exec-1] c.e.springmultirequest.DetailController  : idRequest: 1
    2021-02-27 12:52:37.406  INFO 17984 --- [nio-8080-exec-1] c.e.springmultirequest.DetailController  : Name: john
    2021-02-27 12:52:37.622  INFO 17984 --- [nio-8080-exec-6] c.e.springmultirequest.DetailController  : idRequest: 2
    2021-02-27 12:52:37.622  INFO 17984 --- [nio-8080-exec-6] c.e.springmultirequest.DetailController  : Name: john
    2021-02-27 12:52:37.622  INFO 17984 --- [nio-8080-exec-6] c.e.springmultirequest.DetailController  : Last name: cena
    2021-02-27 12:52:37.676  INFO 17984 --- [nio-8080-exec-8] c.e.springmultirequest.DetailController  : idRequest: 3
    2021-02-27 12:52:37.676  INFO 17984 --- [nio-8080-exec-8] c.e.springmultirequest.DetailController  : mobileNumber: 09XXXXXXX0
    2021-02-27 12:52:37.676  INFO 17984 --- [nio-8080-exec-8] c.e.springmultirequest.DetailController  : email: nick@yahoo.com
    2021-02-27 12:52:37.738  INFO 17984 --- [nio-8080-exec-5] c.e.springmultirequest.DetailController  : idRequest: 4
    2021-02-27 12:52:37.738  INFO 17984 --- [nio-8080-exec-5] c.e.springmultirequest.DetailController  : pet: dog
    2021-02-27 12:52:37.738  INFO 17984 --- [nio-8080-exec-5] c.e.springmultirequest.DetailController  : color: black
    2021-02-27 12:52:37.738  INFO 17984 --- [nio-8080-exec-5] c.e.springmultirequest.DetailController  : sex: F

Answer 3

使用@RequestBody Map 请求读取您的json，通过Json 解析器（如Gson 或Jackson）解析您的json。

Answer 4

你可以用这个

@PostMapping(value = "/example" )
public void abc(@RequestBody HashMap<String, String > requestData) {

    System.out.println(requestData);

}