springboot全局自定义异常

1.自定义异常

package com.xxx.dzwz.util.exception;

/**
 * 自定义异常
 * @date 2024-01-19 10:00:00
 * @author wangwei
 */
public class CustomException extends RuntimeException {
  private static final long serialVersionUID = 1L;

  private Integer code;

  private String message;

  public CustomException(String message) {
    this.message = message;
  }

  public CustomException(String message, Integer code) {
    this.message = message;
    this.code = code;
  }

  public CustomException(String message, Throwable e) {
    super(message, e);
    this.message = message;
  }

  @Override
  public String getMessage() {
    return message;
  }

  public Integer getCode() {
    return code;
  }
}

2.业务异常

package com.xxx.dzwz.util.exception;

/**
 * 业务异常
 * @author wangwei
 */
public final class ServiceException extends RuntimeException
{
    private static final long serialVersionUID = 1L;

    /**
     * 错误码
     */
    private Integer code;

    /**
     * 错误提示
     */
    private String message;

    /**
     * 错误明细，内部调试错误
     *
     * 和 {@link CommonResult#getDetailMessage()} 一致的设计
     */
    private String detailMessage;

    /**
     * 空构造方法，避免反序列化问题
     */
    public ServiceException()
    {
    }

    public ServiceException(String message)
    {
        this.message = message;
    }

    public ServiceException(String message, Integer code)
    {
        this.message = message;
        this.code = code;
    }

    public String getDetailMessage()
    {
        return detailMessage;
    }

    @Override
    public String getMessage()
    {
        return message;
    }

    public Integer getCode()
    {
        return code;
    }

    public  com.cmrx.dzwz.util.exception.ServiceException setMessage(String message)
    {
        this.message = message;
        return this;
    }

    public  com.cmrx.dzwz.util.exception.ServiceException setDetailMessage(String detailMessage)
    {
        this.detailMessage = detailMessage;
        return this;
    }
}

3.全局异常处理器

package com.xxx.dzwz.util.exception;
import com.xxx.dzwz.util.AjaxResult;
import com.xxx.dzwz.util.StringUtils;
import com.xxx.dzwz.util.pageutil.HttpStatus;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.validation.BindException;
import org.springframework.web.HttpRequestMethodNotSupportedException;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RestControllerAdvice;
import javax.servlet.http.HttpServletRequest;
import java.nio.file.AccessDeniedException;

/**
 * 全局异常处理器
 * * @date 2024-01-30 09:46:00
 * @author wangwei
 */
@RestControllerAdvice
public class GlobalExceptionHandler
{
    private static final Logger log = LoggerFactory.getLogger(com.cmrx.dzwz.util.exception.GlobalExceptionHandler.class);

    /**
     * 权限校验异常
     */
    @ExceptionHandler(AccessDeniedException.class)
    public AjaxResult handleAccessDeniedException(AccessDeniedException e, HttpServletRequest request)
    {
        String requestURI = request.getRequestURI();
        log.error("请求地址'{}',权限校验失败'{}'", requestURI, e.getMessage());
        return AjaxResult.error(HttpStatus.FORBIDDEN, "没有权限，请联系管理员授权");
    }

    /**
     * 请求方式不支持
     */
    @ExceptionHandler(HttpRequestMethodNotSupportedException.class)
    public AjaxResult handleHttpRequestMethodNotSupported(HttpRequestMethodNotSupportedException e,
                                                          HttpServletRequest request)
    {
        String requestURI = request.getRequestURI();
        log.error("请求地址'{}',不支持'{}'请求", requestURI, e.getMethod());
        return AjaxResult.error(e.getMessage());
    }

    /**
     * 业务异常
     */
    @ExceptionHandler(ServiceException.class)
    public AjaxResult handleServiceException(ServiceException e, HttpServletRequest request)
    {
        log.error(e.getMessage(), e);
        Integer code = e.getCode();
        return StringUtils.isNotNull(code) ? AjaxResult.error(code, e.getMessage()) : AjaxResult.error(e.getMessage());
    }

    /**
     * 拦截未知的运行时异常
     */
    @ExceptionHandler(RuntimeException.class)
    public AjaxResult handleRuntimeException(RuntimeException e, HttpServletRequest request)
    {
        String requestURI = request.getRequestURI();
        log.error("请求地址'{}',发生未知异常.", requestURI, e);
        return AjaxResult.error(e.getMessage());
    }

    /**
     * 系统异常
     */
    @ExceptionHandler(Exception.class)
    public AjaxResult handleException(Exception e, HttpServletRequest request)
    {
        String requestURI = request.getRequestURI();
        log.error("请求地址'{}',发生系统异常.", requestURI, e);
        return AjaxResult.error(e.getMessage());
    }

    /**
     * 自定义验证异常
     */
    @ExceptionHandler(BindException.class)
    public AjaxResult handleBindException(BindException e)
    {
        log.error(e.getMessage(), e);
        String message = e.getAllErrors().get(0).getDefaultMessage();
        return AjaxResult.error(message);
    }

    /**
     * 自定义验证异常
     */
    @ExceptionHandler(MethodArgumentNotValidException.class)
    public Object handleMethodArgumentNotValidException(MethodArgumentNotValidException e)
    {
        log.error(e.getMessage(), e);
        String message = e.getBindingResult().getFieldError().getDefaultMessage();
        return AjaxResult.error(message);
    }

    /**
     * 演示模式异常
     */
 /*   @ExceptionHandler(DemoModeException.class)
    public AjaxResult handleDemoModeException(DemoModeException e)
    {
        return AjaxResult.error("演示模式，不允许操作");
    }*/
}