Question

我正在尝试从React（客户端）向Java服务器端执行简单的发布请求。这是我的控制器。

package com.va.med.dashboard.controllers;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.*;

import com.va.med.dashboard.services.VistaServiceImpl;
import gov.va.med.exception.FoundationsException;

@RestController
@RequestMapping("/dashboard")
public class DashboardController  {

   @Autowired
   private VistaServiceImpl vistaService;

   @RequestMapping("/main")
   String home() {
          return "main route";
   }

   @RequestMapping("/rpc")
   String test() throws FoundationsException {
          vistaService.myAuth();
          return "this is rpc route";
   }

   @RequestMapping(method = RequestMethod.POST, produces = 
"application/json", value = "/vista")
   @ResponseStatus(value = HttpStatus.ACCEPTED)
   public String getVistaConnection(@RequestBody String ipString, @RequestBody String portString, @RequestBody String accessPin,
   @RequestBody String verifyPin) {

       System.out.println(ipString);
       System.out.println(portString);
       System.out.println(accessPin);
       System.out.println(verifyPin);

       vistaService.connect(ipString, portString, accessPin, verifyPin); // TO-DO populate with serialized vars
       if (vistaService.connected) {
              return "Connected";
       } else {
              return "Not Connected";
       }
   }
}

以下是我的反应axios post请求

 axios.post('/dashboard/vista', {
  ipString: this.state.ipString,
  portString: this.state.portString,
  accessPin: this.state.accessPin,
  verifyPin: this.state.verifyPin
})
.then(function (response){
  console.log(response);
})
.catch(function (error){
  console.log(error);
});

这也是我得到的错误。

Failed to read HTTP message:     
org.springframework.http.converter.HttpMessageNotReadableException: 
Required request body is missing:

任何人都可以对此错误消息有所了解吗？我来自一个纯粹的JavaScript背景，所以很多我不熟悉的东西，因为它是在JavaScrips语言中自动实现的。

提前再次感谢！

Answer 1

你做错了。

而不是

public String getVistaConnection(@RequestBody String ipString, @RequestBody String portString, @RequestBody String accessPin,RequestBody String verifyPin)

您应该将这些参数包装在一个类中：

public class YourRequestClass {
   private String ipString;
   private String portString;
   ....
   // Getter/setters here
}

，你的控制器方法如下：

public String getVistaConnection(@RequestBody YourRequestClass request)

来自@Rajmani Arya：

由于RestContoller和@RequestBody想要读取JSON正文，因此在axios.post调用中你应该放置标题Content-Type: application/json

Answer 2

尝试用@RequestParam

替换所有@RequestBody注释

public String getVistaConnection(@RequestParam String ipString, @RequestParam String portString, @RequestParam String accessPin, @RequestParam String verifyPin)

Spring boot Java post request

2 个答案: