SpringBoot 2 统一异常处理过程解析

public class ReturnMessage<T> {
  private Integer code;//错误码
  private String message;//提示信息
  private T date;//返回具体内容
  public ReturnMessage(Integer code, String message, T date) {
    super();
    this.code = code;
    this.message = message;
    this.date = date;
  }
  //省略get and set方法  
}

public class ReturnMessageUtil {
  /**
   * 无异常 请求成功并有具体内容返回
   * @param object
   * @return
   */
  public static ReturnMessage<Object> sucess(Object object) {
    ReturnMessage<Object> message = new ReturnMessage<Object>(0,"sucess",object);
    return message;
  }
  /**
   * 无异常 请求成功并无具体内容返回
   * @return
   */
  public static ReturnMessage<Object> sucess() {
    ReturnMessage<Object> message = new ReturnMessage<Object>(0,"sucess",null);
    return message;
  }
  /**
   * 有自定义错误异常信息
   * @param code
   * @param msg
   * @return
   */
  public static ReturnMessage<Object> error(Integer code,String msg) {
    ReturnMessage<Object> message = new ReturnMessage<Object>(code,msg,null);
    return message;
  }
 }

public class SbException extends RuntimeException{
  private Integer code; 
  public Integer getCode() {
    return code;
  }
  public void setCode(Integer code) {
    this.code = code;
  }  
  public SbException(Integer code,String message) {
    super(message);
    this.code = code;
  }  
}

@RestControllerAdvice
public class ExceptionHandle {
  private final static Logger logger = LoggerFactory.getLogger(ExceptionHandle.class);
  
  @ExceptionHandler(value = Exception.class)
  public ReturnMessage<Object> handle(Exception exception) {
    if(exception instanceof SbException) {
      SbException sbexception = (SbException)exception;
      return ReturnMessageUtil.error(sbexception.getCode(), sbexception.getMessage());
    }else {
      logger.error("系统异常 {}",exception);
      return ReturnMessageUtil.error(-1, "未知异常"+exception.getMessage());
    }
  }
}

@RestController
@RequestMapping("/error")
public class DemoException {  
  @GetMapping(value = "custome")
  public void customException() {
    SbException sbe = new SbException(100, "这个是自定义异常！");
    throw sbe;
  }
  @GetMapping(value = "unknown")
  public void unknownException() {
    int i = 0;
    int b = 1/i;
  }
}