创建全局错误异常捕获

1、App.java

创建全局错误异常捕获

2、创建BaseController.java基类控制器

创建全局错误异常捕获

public class BaseController {
    //跨域请求
    public final static String CONTENT_TYPE="application/x-www-form-urlencoded";
    //定义exceptionhandler解决未被controller层吸收的exception
@ExceptionHandler(Exception.class)
@ResponseStatus(HttpStatus.OK)
@ResponseBody
    public Object handlerException(HttpServletRequest request,Exception ex){
        Map<String,Object> responseData = new HashMap<>();
        if (ex instanceof CommonException){
            CommonException commonException = (CommonException)ex;
            responseData.put("errorCode",commonException.getErrorCode());
            responseData.put("errorMsg",commonException.getErrorMsg());
        }else{
            responseData.put("errorCode", EnumError.UNKNOW_ERROR.getErrorCode());
            responseData.put("errorMsg",EnumError.UNKNOW_ERROR.getErrorMsg());
        }
        return CommonReturnType.create(responseData,"fail");
    }

}

3、创建CommonError接口

创建全局错误异常捕获

//异常处理
public interface CommonError {
    public int getErrorCode();
    public String getErrorMsg();
    public CommonError setErrormsg(String errorMsg);
}

4、创建CommonException.java

//包装器业务异常类实现
public class CommonException extends Exception implements CommonError{
    private CommonError commonError;
    public CommonException(CommonError commonError){
        super();
        this.commonError = commonError;
    }
    //接收自定义errorMsg的方式构造业务异常
    public CommonException(CommonError commonError,String errorMsg){
        super();
        this.commonError = commonError;
        this.commonError.setErrormsg(errorMsg);
    }
    @Override
    public int getErrorCode() {
        return this.commonError.getErrorCode();
    }

    @Override
    public String getErrorMsg() {
        return this.commonError.getErrorMsg();
    }

    @Override
    public CommonError setErrormsg(String errorMsg) {
        this.commonError.setErrormsg(errorMsg);
        return this;
    }
}

5、创建枚举EnumError.java

public enum EnumError implements CommonError{
    //未知错误
    UNKNOW_ERROR(99998,"未知错误"),
    //定义一个通用类型的错误
    COMMON_ERROR(99999,"参数不合法"),
    //验证码输入错误,匹配不成功
    VCODE_ERROR(99997,"验证码输入有误,请重新输入"),
    //参数不能为空
    PRAMA_NOT_EMPTY_ERROR(99996,"参数不能为空"),
    //10000开头代表用户相关信息错误定义
    USER_NOT_EXIST(10001,"用户信息不存在"),
    ;

    private int errorCode;
    private String errorMsg;

    //构造函数
    private EnumError(int errorCode,String errorMsg){
        this.errorCode = errorCode;
        this.errorMsg = errorMsg;
    }

    @Override
    public int getErrorCode() {
        return this.errorCode;
    }

    @Override
    public String getErrorMsg() {
        return this.errorMsg;
    }

    @Override
    public CommonError setErrormsg(String errorMsg) {
        this.errorMsg=errorMsg;
        return this;
    }
}

6、创建CommonReturnType.java

public class CommonReturnType {
    //返回对应请求的处理处理状态
    private String status;
    //返回请求的json数据
    private Object data;

    //定义一个通用的创建方法、
    public static CommonReturnType create(Object result){
        return CommonReturnType.create(result,"success");
    }

    public static CommonReturnType create(Object result,String status){
        CommonReturnType data = new CommonReturnType();
        data.setStatus(status);
        data.setData(result);
        return data;
    }

    public String getStatus() {
        return status;
    }

    public void setStatus(String status) {
        this.status = status;
    }

    public Object getData() {
        return data;
    }

    public void setData(Object data) {
        this.data = data;
    }
}

创建全局错误异常捕获

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