试图 call/post 第三方 api 在 java spring

Question

我的问题是当我尝试此操作时出现媒体类型错误，然后我更改了 header。现在我收到 500 错误。问题不在于 api，在 postman 上它完美地工作，请求 post 时我的代码是否做错了什么？

我的object模特

public class EmailModel {
    
    private String module;
    private String notificationGroupType;
    private String notificationGroupCode;
    private String notificationType;
    private String inLineRecipients;
    private String eventCode;
    private HashMap<String, Object> metaData;

    public EmailModel() {
        this.module = "CORE";
        this.notificationGroupType = "PORTAL";
        this.notificationGroupCode = "DEFAULT";
        this.notificationType = "EMAIL";
        this.inLineRecipients = "[chrispotjnr@gmail.com,chris@mqattach.com]";
        this.eventCode = "DEFAULT";
        this.metaData = metaData;
    }
}

我的控制器它应该发送带有 object body 的 post 请求，电子邮件已发送

@RequestMapping(value = "test", method = RequestMethod.Post)
public void post() throws Exception {
    String uri = "TestUrl";

    EmailModel em = new EmailModel();
    EmailModel data = em;

    HttpClient client = HttpClient.newBuilder().build();
    HttpRequest request = HttpRequest.newBuilder()
        .headers("Content-Type", "application/json")
        .uri(URI.create(uri))
        .POST(HttpRequest.BodyPublishers.ofString(String.valueOf(data)))
        .build();

    HttpResponse<?> response = client.send(request, HttpResponse.BodyHandlers.discarding());
    System.out.println(em);
    System.out.println(response.statusCode());
}

postmanImage

Answer 1

您必须通过 ObjectMapper

将 EmailModel 转换为 json 格式

ObjectMapper objectMapper = new ObjectMapper();
String data = objectMapper
      .writerWithDefaultPrettyPrinter()
      .writeValueAsString(em);

并将 POST 更改为：

.POST(HttpRequest.BodyPublishers.ofString(data))

详细了解 ObjectMapper

试图 call/post 第三方 api 在 java spring

Trying to call/post a third party api in java spring

java

spring

spring-boot

http