[英]Error response in json format for Spring interceptor
I am writing a REST based web service. 我正在编写一个基于REST的Web服务。 I need to return all the responses as JSON format.
我需要以JSON格式返回所有响应。 I have an interceptor to validate my authentication parameters.
我有一个拦截器来验证我的身份验证参数。 On authentication failure scenario, I have to return the error response in JSON format.
在身份验证失败的情况下,我必须以JSON格式返回错误响应。
Currently i am doing 目前我在做
response.setHeader("Content-Type","application/json"); response.setHeader(“ Content-Type”,“ application / json”); response.sendError(HttpServletResponse.SC_UNAUTHORIZED, "{\\"error\\":\\"Missing Authentication Parameters\\"}");
response.sendError(HttpServletResponse.SC_UNAUTHORIZED,“ {\\”错误\\“:\\”缺少身份验证参数\\“}”“);
The response body is coming as below. 响应主体如下。
JBoss Web/2.1.3.GA - Error report JBoss Web / 2.1.3.GA-错误报告
type Status report
类型状态报告
message {"error":"Missing Authentication Parameters"}
消息 {“错误”:“缺少身份验证参数”}
description This request requires HTTP authentication ({"error":"Missing Authentication Parameters"}).
说明此请求需要HTTP身份验证({“错误”:“缺少身份验证参数”})。
I need just the JSON string in response. 我只需要JSON字符串作为响应。 Please help me.
请帮我。
You should probably be using spring-security for this. 您可能应该为此使用spring-security。 If you want to do it by hand, an alternative to using
sendError
on the response is to use spring MVC's @ExceptionHandler along with content negotiation to return JSON. 如果您想手动执行此操作,则在响应上使用
sendError
的替代方法是使用spring MVC的@ExceptionHandler以及内容协商来返回JSON。
First define an error class*: 首先定义一个错误类别*:
public class Error {
public message;
public exception;
public Error(String message, Exception ex) {
this.message = message;
this.exception = ex;
}
}
And an exception: 还有一个例外:
public class NotAuthenticatedException extends Exception {
// ...
}
Then in your controller you throw an exception at the appropriate time, catch it with @ExceptionHandler
and return a ResponseEntity
containing an Error
instance and the appropriate error code. 然后,在您的控制器中,在适当的时间引发异常,使用
@ExceptionHandler
捕获该异常,并返回包含Error
实例和适当的错误代码的ResponseEntity
。
@Controller
public class SimpleController {
@RequestMapping(...)
public String aMethod() {
// ...
throw new NotAuthenticatedException("Missing Authentication Parameters");
}
@ExceptionHandler(NotAuthenticatedException.class)
public ResponseEntity<Error> handleNotAuthenticatedException(
NotAuthenticatedException ex,
HttpServletRequest request) {
return new ResponseEntity<Error>(
new Error(ex.getMessage(), ex),
HttpStatus.UNAUTHORIZED
);
}
}
*use getters/setters to please the java convention gods *使用getters / setters来取悦Java惯例之神
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