springboot项目学习笔记2 用户模块

# 用户模块

# 通用返回对象

新建包：common
新建类：ApiRestResponse

package com.izhaong.mall.common;

import com.izhaong.mall.exception.MallException;

public class ApiRestResponse<T> {

    private static final int OK_CODE = 1000;
    private static final String OK_MSG = "success";

    private Integer status;
    private String msg;
    private T data;

    public ApiRestResponse(Integer status, String msg, T data) {
        this.status = status;
        this.msg = msg;
        this.data = data;
    }

    public ApiRestResponse(Integer status, String msg) {
        this.status = status;
        this.msg = msg;
    }

    public ApiRestResponse() {
        this(OK_CODE, OK_MSG);
    }

    public static <T> ApiRestResponse<T> success() {
        return new ApiRestResponse<>();
    }

    public static <T> ApiRestResponse<T> success(T result) {
        ApiRestResponse<T> response = new ApiRestResponse<>();
        response.setData(result);
        return response;
    }

    public static <T> ApiRestResponse<T> error(Integer code, String msg) {
        return new ApiRestResponse<>(code, msg);
    }

    public static <T> ApiRestResponse<T> error(MallException ex) {
        return new ApiRestResponse<>(ex.getCode(), ex.getMsg());
    }

    public Integer getStatus() {
        return status;
    }

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

    public String getMsg() {
        return msg;
    }

    public void setMsg(String msg) {
        this.msg = msg;
    }

    public T getData() {
        return data;
    }

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

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新建异常包：exception

新建异常类：MallException

package com.izhaong.mall.exception;

public class MallException {

    private final Integer code;
    private final String msg;

    public MallException(Integer code, String msg) {
        this.code = code;
        this.msg = msg;
    }

    public MallException(MallExceptionEnum exceptionEnum) {
        this(exceptionEnum.getCode(), exceptionEnum.getMsg());
    }

    public Integer getCode() {
        return code;
    }

    public String getMsg() {
        return msg;
    }
}

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新建异常枚举：MallExceptionEnum

package com.izhaong.mall.exception;

public enum MallExceptionEnum {
    NEED_USER_NAME(10001, "用户名不能为空");

    Integer code;
    String msg;

    MallExceptionEnum(Integer code, String msg) {
        this.code = code;
        this.msg = msg;
    }

    public Integer getCode() {
        return code;
    }

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

    public String getMsg() {
        return msg;
    }

    public void setMsg(String msg) {
        this.msg = msg;
    }
}

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# 密码加密

使用MD5加密

新建软件包：util

新建工具类：MD5Utils

static修饰方便其他人调用

package com.izhaong.mall.util;

import com.izhaong.mall.common.Constant;
import org.apache.tomcat.util.codec.binary.Base64;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

/**
 * @author izhaong
 */
public class MD5Utils {
    public static String getMD5Str(String strVal) throws NoSuchAlgorithmException {
        MessageDigest md5 = MessageDigest.getInstance("MD5");
        return Base64.encodeBase64String(md5.digest((strVal + Constant.SAIT).getBytes()));
    }
}

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防止暴力破解，对其加盐

定义常量：新建类：common/Constant

package com.izhaong.mall.common;

public class Constant {
    public static final String SAIT = "dfa@fs1231";
}

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使用

service/UserServiceimpl.java

        try {
            user.setPassword(MD5Utils.getMD5Str(password));
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        }

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上次更新: 2022/06/05, 20:31:36

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