统一异常处理

一、创建统一状态码枚举类

import lombok.Getter;
import lombok.ToString;

@Getter
@ToString
public enum ResultCodeEnum {

    SUCCESS(true, 20000,"成功"),
    UNKNOWN_REASON(false, 20001, "未知错误"),

    BAD_SQL_GRAMMAR(false, 21001, "sql语法错误"),
    JSON_PARSE_ERROR(false, 21002, "json解析异常"),
    PARAM_ERROR(false, 21003, "参数不正确"),

    FILE_UPLOAD_ERROR(false, 21004, "文件上传错误"),
    FILE_DELETE_ERROR(false, 21005, "文件刪除错误"),
    EXCEL_DATA_IMPORT_ERROR(false, 21006, "Excel数据导入错误"),

    VIDEO_UPLOAD_ALIYUN_ERROR(false, 22001, "视频上传至阿里云失败"),
    VIDEO_UPLOAD_TOMCAT_ERROR(false, 22002, "视频上传至业务服务器失败"),
    VIDEO_DELETE_ALIYUN_ERROR(false, 22003, "阿里云视频文件删除失败"),
    FETCH_VIDEO_UPLOADAUTH_ERROR(false, 22004, "获取上传地址和凭证失败"),
    REFRESH_VIDEO_UPLOADAUTH_ERROR(false, 22005, "刷新上传地址和凭证失败"),
    FETCH_PLAYAUTH_ERROR(false, 22006, "获取播放凭证失败"),

    URL_ENCODE_ERROR(false, 23001, "URL编码失败"),
    ILLEGAL_CALLBACK_REQUEST_ERROR(false, 23002, "非法回调请求"),
    FETCH_ACCESSTOKEN_FAILD(false, 23003, "获取accessToken失败"),
    FETCH_USERINFO_ERROR(false, 23004, "获取用户信息失败"),
    LOGIN_ERROR(false, 23005, "登录失败"),

    COMMENT_EMPTY(false, 24006, "评论内容必须填写"),

    PAY_RUN(false, 25000, "支付中"),
    PAY_UNIFIEDORDER_ERROR(false, 25001, "统一下单错误"),
    PAY_ORDERQUERY_ERROR(false, 25002, "查询支付结果错误"),

    ORDER_EXIST_ERROR(false, 25003, "课程已购买"),

    GATEWAY_ERROR(false, 26000, "服务不能访问"),

    CODE_ERROR(false, 28000, "验证码错误"),

    LOGIN_PHONE_ERROR(false, 28009, "手机号码不正确"),
    LOGIN_MOBILE_ERROR(false, 28001, "账号不正确"),
    LOGIN_PASSWORD_ERROR(false, 28008, "密码不正确"),
    LOGIN_DISABLED_ERROR(false, 28002, "该用户已被禁用"),
    REGISTER_MOBLE_ERROR(false, 28003, "手机号已被注册"),
    LOGIN_AUTH(false, 28004, "需要登录"),
    LOGIN_ACL(false, 28005, "没有权限"),
    SMS_SEND_ERROR(false, 28006, "短信发送失败"),
    SMS_SEND_ERROR_BUSINESS_LIMIT_CONTROL(false, 28007, "短信发送过于频繁");


    private Boolean success;

    private Integer code;

    private String message;

    ResultCodeEnum(Boolean success, Integer code, String message) {
        this.success = success;
        this.code = code;
        this.message = message;
    }
}

二、创建统一异常处理类

@ControllerAdvice
public class GlobalExceptionHandler {

    @ExceptionHandler(Exception.class)
    @ResponseBody
    public R error(Exception e){
        e.printStackTrace();
        return R.error();
    }
}

三、处理特定异常

在GlobalExceptionHandler.java中添加

@ExceptionHandler(BadSqlGrammarException.class)
@ResponseBody
public R error(BadSqlGrammarException e){
    e.printStackTrace();
    return R.setResult(ResultCodeEnum.BAD_SQL_GRAMMAR);
}

四、自定义异常类(继承RuntimeException)

import com.yqd.guli.common.base.result.ResultCodeEnum;
import lombok.Data;

@Data
public class GuliException extends RuntimeException {
    //状态码
    private Integer code;

    /**
     * 接受状态码和消息
     *
     * @param code
     * @param message
     */
    public GuliException(Integer code, String message) {
        super(message);
        this.code = code;
    }

    /**
     * 接收枚举类型
     *
     * @param resultCodeEnum
     */
    public GuliException(ResultCodeEnum resultCodeEnum) {
        super(resultCodeEnum.getMessage());
        this.code = resultCodeEnum.getCode();
    }

    @Override
    public String toString() {
        return "GuliException{" +
                "code=" + code +
                ", message=" + this.getMessage() +
                '}';
    }
}

五、使用统一异常处理来

在GlobalExceptionHandler.java中添加

@ExceptionHandler(GuliException.class)
@ResponseBody
public R error(GuliException e) {
    log.error(ExceptionUtils.getMessage(e));
    return R.error().message(e.getMessage()).code(e.getCode());
}