框架封装

package com.woniuxy.mall131.common.result;

public interface Messagable {
    /**
     * 获取结果码
     * @return
     */
    String getCode();
    /**
     * 获取结果信息
     * @return
     */
    String getMessage();

}

package com.woniuxy.mall131.common.result;

public enum CommonResultCode implements Messagable {
    SUCCESS("SUCCESS", "操作成功"),
    FAIL("FAIL", "操作失败"),
    PARAM_ERROR("PARAM_ERROR", "参数错误"),
    INVALID_STATE("INVALID_STATE", "非法状态")
    ;


    private String code;
    private String message;
    CommonResultCode(String code, String message) {
        this.code = code;
        this.message = message;
    }
    public String getCode() {
        return code;
    }
    public String getMessage() {
        return message;
    }

    @Override
    public String toString() {
        return this.code + ":" + this.message;
    }
}

package com.woniuxy.mall131.common.result;

public class Result<T> {
    private String code;
    private String message;
    private T data;
    private boolean success;

    public Result() {
    }

    public Result(boolean success, String code, String message, T data) {
        this.success=success;
        this.code = code;
        this.message = message;
        this.data = data;
    }


    public static <T> Result<T> success(T data) {
        return new Result<>(true, CommonResultCode.SUCCESS.getCode(), CommonResultCode.SUCCESS.getMessage(), data);

    }

    public static <T> Result<T> success() {
        return success(null);
    }


    public static <T> Result<T> fail(String code, String message) {
        return new Result<>(false,code, message, null);
    }

    public static <T> Result<T> fail(Messagable resultCode) {
        return fail(resultCode.getCode(), resultCode.getMessage());
    }

    public static <T> Result<T> fail() {
        return fail(CommonResultCode.FAIL);
    }

    public String getCode() {
        return code;
    }

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

    public String getMessage() {
        return message;
    }

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

    public T getData() {
        return data;
    }

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

    public boolean isSuccess() {
        return success;
    }

    public void setSuccess(boolean success) {
        this.success = success;
    }

    @Override
    public String toString() {
        return "Result{" +
        "code='" + code + '\'' +
        ", message='" + message + '\'' +
        ", data=" + data +
        ", success=" + success +
        '}';
    }
}

package com.woniuxy.mall131.common.exception;

import com.woniuxy.mall131.common.result.Messagable;

public class MallException extends RuntimeException{
    private String code;

    public MallException(Messagable messagable) {
        super(messagable.getMessage());
        this.code = messagable.getCode();
    }

    public MallException(String message, String code) {
        super(message);
        this.code = code;
    }

    public MallException(String message, Throwable cause, String code) {
        super(message, cause);
        this.code = code;
    }

    public MallException(Throwable cause, String code) {
        super(cause);
        this.code = code;
    }

    public MallException(String message, Throwable cause, boolean enableSuppression, boolean writableStackTrace, String code) {
        super(message, cause, enableSuppression, writableStackTrace);
        this.code = code;
    }
}