springmvc全局异常处理

目录

1.提供项目业务异常枚举接口

2.封装项目业务异常枚举

3.封装项目业务异常

4.定义全局异常拦截器

5.抛出异常

-------------------------2018-9-13更新---------------------------------

加入了Google翻译，翻译异常名为中文。

---

1.提供项目业务异常枚举接口

，用于获取异常code和异常message

/**
 * <p>
 * 说明:业务异常抽象接口
 * </p>
 *
 * @author lgl
 */
public interface ServiceExceptionEnum {

    /**
     * <p>
     * 说明:获取异常编码
     * </p>
     */
    int getCode();

    /**
     * <p>
     * 说明:获取异常信息
     * </p>
     */
    String getMessage();
}

2.封装项目业务异常枚举

，实现业务异常接口

/**
 * <p>
 * 说明:业务异常枚举
 * </p>
 *
 * @author lgl
 */
public enum BizExceptionEnum implements ServiceExceptionEnum {

    //只写几个展示
    OK(1, "操作成功"),
    NOT_LOGIN(-1, "用户未登陆"),
    CAN_NOT_NULL(-2, "不能为空"),
    PARAMER_TYPE_ERROR(-3, "参数类型错误");

    BizExceptionEnum(int code, String message) {
        this.code = code;
        this.message = message;
    }

    private int code;

    private String message;

    @Override
    public int getCode() {
        return code;
    }

    public void setCode(int code) {
        this.code = code;
    }

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

    public void setMessage(String message) {
        this.message = message;
    }
}

3.封装项目业务异常

，从异常枚举接口里获取异常数据，这里是pobc项目

/**
 * <p>
 * 说明:封装pobc业务异常
 * </p>
 *
 * @author lgl
 */
public class PobcException extends RuntimeException {

    /**
     * <p>
     * 说明:返回码
     * </p>
     */
    private int code;

    /**
     * <p>
     * 说明:返回消息
     * </p>
     */
    private String message;

    public PobcException() {
    }

    public PobcException(ServiceExceptionEnum serviceExceptionEnum) {
        this.code = serviceExceptionEnum.getCode();
        this.message = serviceExceptionEnum.getMessage();
    }

    public PobcException(int code, String message) {
        this.code = code;
        this.message = message;
    }

    public int getCode() {
        return code;
    }

    public void setCode(int code) {
        this.code = code;
    }

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

    public void setMessage(String message) {
        this.message = message;
    }
}

4.定义全局异常拦截器

，要被扫描器扫到哦！

import com.fushoukeji.pobc.common.model.Result;
import com.fushoukeji.pobc.common.util.ResultUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestControllerAdvice;

import javax.validation.ConstraintViolation;
import javax.validation.ConstraintViolationException;
import java.sql.SQLException;


/**
 * <p>
 * 说明:全局的的异常拦截器（拦截所有的控制器）（带有@xxxMapping注解的方法上都会拦截）
 * 以下只写了几种异常拦截，用于展示
 * </p>
 *
 * @author lgl
 */
@RestControllerAdvice
public class GlobalExceptionHandler {

    private Logger log = LoggerFactory.getLogger(this.getClass());

    /**
     * <p>
     * 说明:拦截业务异常
     * </p>
     */
    @ExceptionHandler(PobcException.class)
    @ResponseBody
    public Result<Object> serviceException(PobcException e) {
        log.error("业务异常:", e);
        return new ResultUtil<Object>().setErrorMsg(e.getCode(), e.getMessage());
    }

    /**
     * 参数不合法异常
     */
    @ExceptionHandler(ConstraintViolationException.class)
    @ResponseBody
    public Result<Object> handleValidationException(ConstraintViolationException e) {
        for (ConstraintViolation<?> s : e.getConstraintViolations()) {
            return new ResultUtil<Object>().setErrorMsg(s.getInvalidValue() + ": " + s.getMessage());
        }
        return new ResultUtil<Object>().setErrorMsg("请求参数不合法");
    }

    /**
     * <p>
     * 说明:拦截未知的运行异常
     * </p>
     */
    @ExceptionHandler(RuntimeException.class)
    @ResponseBody
    public Result<Object> unKnownException(RuntimeException e) {
        log.error("运行时异常:", e);
        return new ResultUtil<Object>().setErrorMsg(BizExceptionEnum.UNKNOW_ERROR.getCode(), BizExceptionEnum.UNKNOW_ERROR.getMessage());
    }

    @ExceptionHandler(SQLException.class)
    @ResponseBody
    public Result<Object> db2ConnectException(SQLException e) {
        log.error("数据库异常:", e);
        return new ResultUtil<Object>().setErrorMsg(BizExceptionEnum.NETWORK_TIMEOUT.getCode(), BizExceptionEnum.NETWORK_TIMEOUT.getMessage());
    }

}

5.抛出异常

service层抛出异常就行了，controller层用不着try catch了，controller层只需要有@XxxMapping就行了

    @Override
    public int stopUser(Long id) {
        TUser tbUser = tUserMapper.selectByPrimaryKey(id);
        tbUser.setState(PobcEnum.STOP_USING.getValue());
        tbUser.setUpdateTime(DateTime.now().toString());
        if (tUserMapper.updateByPrimaryKeySelective(tbUser) != 1) {
            //抛出异常
            throw new PobcException(BizExceptionEnum.USER_STOP_FAIL);
        }
        return 1;
    }

    @Override
    public int startUser(Long id) {
        TUser tbUser = tUserMapper.selectByPrimaryKey(id);
        tbUser.setState(PobcEnum.START_USING.getValue());
        tbUser.setUpdateTime(DateTime.now().toString());
        if (tUserMapper.updateByPrimaryKeySelective(tbUser) != 1) {
            throw new PobcException(BizExceptionEnum.USER_START_FAIL);
        }
        return 1;
    }

-------------------------2018-9-13更新---------------------------------

加入了Google翻译，翻译异常名为中文。

代码：https://download.csdn.net/download/qq_24615069/10665129

忘了上传js。。。。。这里贴上代码，放在resources下的tk文件夹里，名称为Google.js

function token(a) {
    var k = "";
    var b = 406644;
    var b1 = 3293161072;

    var jd = ".";
    var sb = "+-a^+6";
    var Zb = "+-3^+b+-f";

    for (var e = [], f = 0, g = 0; g < a.length; g++) {
        var m = a.charCodeAt(g);
        128 > m ? e[f++] = m: (2048 > m ? e[f++] = m >> 6 | 192 : (55296 == (m & 64512) && g + 1 < a.length && 56320 == (a.charCodeAt(g + 1) & 64512) ? (m = 65536 + ((m & 1023) << 10) + (a.charCodeAt(++g) & 1023), e[f++] = m >> 18 | 240, e[f++] = m >> 12 & 63 | 128) : e[f++] = m >> 12 | 224, e[f++] = m >> 6 & 63 | 128), e[f++] = m & 63 | 128)
    }
    a = b;
    for (f = 0; f < e.length; f++) a += e[f],
    a = RL(a, sb);
    a = RL(a, Zb);
    a ^= b1 || 0;
    0 > a && (a = (a & 2147483647) + 2147483648);
    a %= 1E6;
    return a.toString() + jd + (a ^ b)
};

function RL(a, b) {
    var t = "a";
    var Yb = "+";
    for (var c = 0; c < b.length - 2; c += 3) {
        var d = b.charAt(c + 2),
        d = d >= t ? d.charCodeAt(0) - 87 : Number(d),
        d = b.charAt(c + 1) == Yb ? a >>> d: a << d;
        a = b.charAt(c) == Yb ? a + d & 4294967295 : a ^ d
    }
    return a
}

controller示例

@Api(description = "指标控制器")
@RestController
@RequestMapping(value = "/indicator")
public class IndicatorController {

    @Autowired
    private IndicatorService indicatorService;

    @ApiOperation(value = "新增指标大类")
    @PostMapping(value = "/category/create")
    public Result<Object> createICategory(@RequestBody IndicatorCategory indicatorCategory) {
        indicatorService.createIndicatorCategory(indicatorCategory);
        return new ResultUtil<>().setData(null, "新增成功");
    }
}

service示例：只管抛

@Service
public class IndicatorServiceImpl implements IndicatorService {

    private static final Logger log = LoggerFactory.getLogger(IndicatorServiceImpl.class);

    @Autowired
    private IndicatorCategoryMapper indicatorCategoryMapper;

    @Override
    public void createIndicatorCategory(IndicatorCategory indicatorCategory) {
        try {
            indicatorCategoryMapper.insertSelective(indicatorCategory);
        } catch (Exception e) {
            log.error(e.getMessage());
            throw new GlobalException(500, e);
        }
    }