我们在做Web应用的时候，请求处理过程中发生错误是非常常见的情况。通过使用@ControllerAdvice定义统一的异常处理类，统一处理异常信息。方便统一生成记录错误日志信息和异常处理。

先配置ServiceException

public class ServiceException extends RuntimeException {

    public ServiceException(String message, Throwable throwable) {
        super(message, throwable);
    }

    public ServiceException(String message) {
        super(message);
    }
}

全局消息

@Data
public class ObjectRestResponse<T> {
    boolean rel;
    String msg;
    T result;


    public ObjectRestResponse() {

    }

    public ObjectRestResponse(String msg) {
        this.msg = msg;
    }

    public static ObjectRestResponse success() {
        return new ObjectRestResponse();
    }

    public static ObjectRestResponse success(String msg) {
        return new ObjectRestResponse(msg);
    }

    public static ObjectRestResponse success(Object data) {
        ObjectRestResponse jr = new ObjectRestResponse();
        jr.setResult(data);
        return jr;
    }

    public static ObjectRestResponse error() {
        ObjectRestResponse jr = new ObjectRestResponse();
        jr.setRel(false);
        return jr;
    }

    public static ObjectRestResponse error(String msg) {
        ObjectRestResponse jr = new ObjectRestResponse(msg);
        jr.setRel(false);
        return jr;
    }

    public ObjectRestResponse rel(boolean rel) {
        this.setRel(rel);
        return this;
    }

    public ObjectRestResponse msg(String msg) {
        this.setMsg(msg);
        return this;
    }

    public ObjectRestResponse result(T result) {
        this.setResult(result);
        return this;
    }
}

配置ControllerAdvice

@Slf4j
@ControllerAdvice
public class ExceptionControllerAdvice {

    @ResponseBody
    @ExceptionHandler(BindException.class)
    public ObjectRestResponse bindExceptionHandler(BindException ex) {
        StringBuffer sb = new StringBuffer();
        ex.getFieldErrors().forEach(fieldError -> sb.append(fieldError.getDefaultMessage()).append(","));
        if (sb.length() > 0) {
            sb.deleteCharAt(sb.length() - 1);
        }
        log.error("参数绑定异常", ex);
        return new ObjectRestResponse().error(sb.toString());
    }

    @ResponseBody
    @ExceptionHandler(ServiceException.class)
    public ObjectRestResponse serviceExceptionExceptionHandler(ServiceException ex) {
        log.error("系统业务异常", ex);
        return ObjectRestResponse.error(ex.getMessage());
    }

    @ResponseBody
    @ExceptionHandler(DataAccessException.class)
    public ObjectRestResponse serviceExceptionExceptionHandler(DataAccessException ex) {
        log.error("触发数据只读异常", ex);
        return ObjectRestResponse.error("禁止操作此资源！");
    }

    @ResponseBody
    @ExceptionHandler(Exception.class)
    public ObjectRestResponse serviceExceptionExceptionHandler(Exception ex) {
        log.error("系统未知异常", ex);
        return ObjectRestResponse.error("系统异常,请联系管理员！");
    }
}

controller中使用

    if(!EncryptUtil.decrypt(user.getPassword()).equals(password)){
      throw new ServiceException("密码不正确");
    }