RESTful Api - Spring MediaType 与 Restlet MediaType

Question

我有一个 REST 客户端：

import org.restlet.representation.ObjectRepresentation;
import org.restlet.data.MediaType;

ObjectRepresentation<ApprovalResponse> objectRepresentation = (ObjectRepresentation<ApprovalResponse>) cr.post(approvalRequest, MediaType.APPLICATION_JAVA_OBJECT);

还有一个Spring引导服务RESTfulapi:

import org.springframework.http.MediaType;

@PostMapping(value = "/rest/approvals-submit")
public @ResponseBody ApprovalResponse submit(@RequestHeader(name="Authorization") String token, @RequestBody ApprovalRequest approvalRequest) {
    System.out.println("jwt token: "+token);
    System.out.println(approvalRequest.getMessageToEvaluator());
    ApprovalResponse approvalResponse = new ApprovalResponse();
    approvalResponse.setApprovalId("Test approvalResponse from micro service");
    return approvalResponse;
}

客户端调用API成功。即 System.out.println(approvalRequest.getMessageToEvaluator()); 打印成功。

问题

我的问题是响应对象没有返回到 REST 客户端。

错误信息

休息客户端

org.restlet.resource.ResourceException: Not Acceptable (406) - The resource identified by the request is only capable of generating response entities which have content characteristics not acceptable according to the accept headers sent in the request

Server/Api

Resolved [org.springframework.web.HttpMediaTypeNotAcceptableException: Could not find acceptable representation]

问题

所以我认为这些错误是因为没有正确定义 MediaTypes。你知道他们应该被定义成什么吗？

Answer 1

直接聊天后更新

我们在 rest 端点上添加了以下 postMapping 注释：

@PostMapping(value = "/rest/approvals-submit")
public @ResponseBody ApprovalResponse submit(@RequestHeader(name="Authorization") String token, @RequestBody ApprovalRequest approvalRequest, produces={MediaType.APPLICATION_JSON_VALUE,
MediaType.APPLICATION_XML_VALUE},consumes = MediaType.APPLICATION_JSON_VALUE) {
    System.out.println("jwt token: "+token);
    System.out.println(approvalRequest.getMessageToEvaluator());
    ApprovalResponse approvalResponse = new ApprovalResponse();
    approvalResponse.setApprovalId("Test approvalResponse from micro service");
    return approvalResponse;
}

这个加在@PostMapping注解上产生={MediaType.APPLICATION_JSON_VALUE, MediaType.APPLICATION_XML_VALUE}，消费 = MediaType.APPLICATION_JSON_VALUE。

在客户端，我们将响应类型更改为表示，我们能够获得 json 响应：

ClientResource cr = new ClientResource(endpointUrl);
ChallengeResponse challengeResponse = new ChallengeResponse(ChallengeScheme.HTTP_OAUTH_BEARER);
challengeResponse.setRawValue(token);
cr.setChallengeResponse(challengeResponse);

Request req = cr.getRequest();

Representation representation = cr.post(approvalRequest);
System.out.println(representation.getText());

最后，using Jackson Object Mapper 响应可以映射到批准响应 object:

    // now convert the response to java
    ObjectMapper objectMapper = new ObjectMapper();
    ApprovalResponse approvalResponse = objectMapper.readValue(json, ApprovalResponse.class);
    System.out.println(approvalResponse);
    System.out.println(approvalResponse.getApprovalId());

这是一个内容协商问题。内容协商是通过 Content-Type header 完成的，为了更好地理解它，您可以阅读 this blog entry

RESTful Api - Spring MediaType 与 Restlet MediaType

RESTful Api - Spring MediaType vs Restlet MediaType

java

rest

spring

restlet

直接聊天后更新