Spring靴Rest柱方法不起作用

Question

@PostMapping(value="/test", consumes = "application/json", produces = "application/json")
public String Test(@RequestBody PostResponse inputPayload) {
    PostResponse response = new PostResponse();
    response.setStreamName(inputPayload.getStreamName());
    String randomHexString = getRandomHexString(32);
    return randomHexString;
}

public class PostResponse {
    String streamName;

    public String getStreamName() {
        return streamName;
    }

    public void setStreamName(String streamName) {
        this.streamName = streamName;
    }

}

方法在我发出请求的另一个程序上执行：

public void onHTTPPostRequest(String streamName) throws IOException {

    String post_data = streamName;
    Gson gson = new Gson();
    String jsonString = gson.toJson(post_data);
    jsonString.toString();      

    URL pipedreamURL = new URL("http://10.100.2.44:8080/test");
    HttpURLConnection conn = (HttpURLConnection) pipedreamURL.openConnection();

    conn.setDoOutput(true);
    conn.setDoInput(true);
    conn.setRequestMethod("POST");
    conn.setRequestProperty("Content-Type", "application/json");
    conn.setRequestProperty("Accept", "application/json");
    OutputStream os = conn.getOutputStream();
    os.write(jsonString.getBytes("UTF-8"));
    os.close();

    
    int responseCode = conn.getResponseCode();
    getLogger().info(responseCode);
    BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream()));
    String inputLine;
    StringBuffer response = new StringBuffer();
    while ((inputLine = in.readLine()) != null) {
        response.append(inputLine);
    }
    in.close();

    getLogger().info(response.toString());
    Gson gson1 = new Gson();
    keyjson = gson1.toJson(response);

}

邮递员中的结果：在此处输入图像描述

日志：2021-07-30 13:15:30.376警告4398---[nio-8080-exec-8]。W.S.M.S.DefaultHandlerExceptionResolver：解析[org.springframework.http.converter.HttpMessageNotreadableException:JSON解析错误：无法构造com.example.restservice.PostResponse的实例（尽管至少存在一个创建者）：没有字符串参数构造函数/工厂方法从字符串值反序列化（“AES”）；嵌套异常是至少存在一个创建者）：在[源：（PushbackInputStream）；行：1,列：1]]处没有字符串参数构造函数/工厂方法可以从字符串值（“AES”）反序列化

Answer 1

你收到的是“AES”

这不是有效的JSON。

您的endpoint接受的JSON必须是：

{
  "streamName": "aes"
}

PostResponse postResponse = new PostResponse();
postRepsone.setStreamName(streamName);
Gson gson = new Gson();
String jsonString = gson.toJson(postResponse);