版权声明:本文为博主原创文章,未经博主允许不得转载。 https://blog.csdn.net/Cainiao111112/article/details/82883297
1.首先自定义异常类继承RuntimeException类,以NotFoundException为例:
使用MessageFormat.format()方法做信息和可变参的处理。
public class NotFoundException extends RuntimeException {
private static final long serialVersionUID = 1L;
public NotFoundException(String msg, Object... obj) {
super(MessageFormat.format(msg, obj));
}
}
2.定义全局异常处理类,将自定义的异常注册到其中。
@RestControllerAdvice
@Component
public class GlobalDefaultExceptionHandler {
/**
* 404异常
*
* @param e
* @return
*/
@ExceptionHandler(NotFoundException.class)
@ResponseStatus(HttpStatus.NOT_FOUND)
public ErrorMsg notFoundException(NotFoundException e) {
return new ErrorMsg(404, e.getMessage());
}
/**
* 409异常
*
* @param e
* @return
*/
@ExceptionHandler(ExistedException.class)
@ResponseStatus(HttpStatus.CONFLICT)
public ErrorMsg existedException(ExistedException e) {
return new ErrorMsg(409, e.getMessage());
}
/**
* 403
*
* @param e
* @return
*/
@ExceptionHandler(UnAuthenticationException.class)
@ResponseStatus(HttpStatus.FORBIDDEN)
public ErrorMsg unAuthenticationException(UnAuthenticationException e) {
return new ErrorMsg(403, e.getMessage());
}
/**
* 400 json格式异常
*
* @param e
* @return
*/
@ExceptionHandler(JsonSchemaException.class)
@ResponseStatus(HttpStatus.BAD_REQUEST)
public ErrorMsg jsonSchemaException(JsonSchemaException e) {
return new ErrorMsg(400, e.getMessage());
}
}
3.接下来只要在需要抛出异常的位置,抛出自定义异常即可。