如何通过自己的 REST 服务将 API 异常输出传递给?

How to pass API exception output to through own REST service?

总结: 我想通过使用我自己的 Rest 服务将一个 REST 服务端点给出的有效异常输出传递给最终用户。

我所做的是,我使用 RestTemplate class 在服务 class 中调用了该服务,它根据有效 post 请求提供有效输出。但是当我向它传递无效输入时,我在我的服务 class 中只得到“400 BAD REQUEST”结果,我称之为 API。但是当我使用 postman 分别调用 API 时,我得到了预期的输出。

代码示例:

class Abc {
    ResponseEntity<String> = response;
    static final String url = "https://abc-xyz.com/client-rest-end-point-url";
    public ResponseEntity getDetails(RequestInput requestInput) {

        try{
            response=restTemplate.postForObject(url,requestInput,String.class);
        } catch(Exception e) {
            ResponseEntity response = (ResponseEntity<ErrorModel>)restTemplate.postForEntity(url,requestInput,ErrorModel.class);
        }//try-catch
    }//getDetails method
}//class

使用@ExceptionHandler 注释来注释您的方法。您可以从控制器中单独编码 class。

@ControllerAdvice
public class YourExceptionHandler {

@ExceptionHandler(CustomException.class)
public String xException() {
 return "error/exception";
}
}

您可以为整个应用程序创建自定义异常 class,并且可以使用 throw 关键字在 JSON 中发送数据 假设你有例外 class 是:

public class TestException extends Exception {

private static final long serialVersionUID = 1L;
private String code;
private String detailMessage;

public TestException() {
};

public TestException(String message, String code, String detailMessage) {
    super(message);
    this.code = code;
    this.detailMessage = detailMessage;
}

public TestException(String message, String code) {
    super(message);
    this.code = code;
}
//TestExceptionResponseCode is another class for message data, if required.
public TestException(TestExceptionResponseCode testExceptionResponseCode) {
    super(testExceptionResponseCode.getMessage());
    this.code = testExceptionResponseCode.getCode();
}

public String getCode() {
    return code;
}

public void setCode(String code) {
    this.code = code;
}

public String getDetailMessage() {
    return detailMessage;
}

public void setDetailMessage(String detailMessage) {
    this.detailMessage = detailMessage;
}

}

现在在你的情况下抛出异常可以是这样的:

class Abc {
ResponseEntity<String> = response;
static final String url = "https://abc-xyz.com/client-rest-end-point-url";
public ResponseEntity getDetails(RequestInput requestInput) {
       if(requestInput==null){
          throw new TestException("FAILED", "1", "Data can't be null");
    }

}