基于springboot的登录功能的实现（超详细）

一、首先进行环境的准备

** 1.创建数据库**

     ![](https://img-blog.csdnimg.cn/7f31a209ba194cae8966411864cb2333.png)

** 2.创建项目 依赖包如下**

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.heima</groupId>
    <artifactId>heima-leadnews</artifactId>
    <packaging>pom</packaging>
    <version>1.0-SNAPSHOT</version>
    <modules>
        <module>heima-leadnews-common</module>
        <module>heima-leadnews-utils</module>
        <module>heima-leadnews-model</module>
        <module>heima-leadnews-feign-api</module>
        <module>heima-leadnews-service</module>
        <module>heima-leadnews-gateway</module>
        <module>heima-leadnews-test</module>
    </modules>

    <!-- 继承Spring boot工程 -->
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.3.9.RELEASE</version>
    </parent>
    <properties>
        <!-- 项目源码及编译输出的编码 -->
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <!-- 项目编译JDK版本 -->
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>

        <!-- 依赖包版本管理 -->
        <spring.boot.version>2.3.9.RELEASE</spring.boot.version>
        <commons.io.version>2.6</commons.io.version>
        <commons.codec.version>1.12</commons.codec.version>
        <lombok.version>1.18.8</lombok.version>
        <mysql.version>5.1.46</mysql.version>
        <mybatis.version>3.5.1</mybatis.version>
        <mybatis.spring.version>2.0.1</mybatis.spring.version>
        <mybatis.plus.version>3.4.1</mybatis.plus.version>
        <lang3.version>3.5</lang3.version>
        <pagehelper.version>1.2.3</pagehelper.version>
        <jsoup.version>1.10.2</jsoup.version>
        <jwt.version>0.9.1</jwt.version>
        <fastjson.version>1.2.58</fastjson.version>
        <fastjson.dataformat.version>2.9.8</fastjson.dataformat.version>
        <spring.jwt.version>1.0.9.RELEASE</spring.jwt.version>
        <spring.boot.admin.version>2.1.6</spring.boot.admin.version>
        <spring.cloud.version>Hoxton.SR10</spring.cloud.version>
        <curator.version>4.2.0</curator.version>
        <hanlp.version>portable-1.3.4</hanlp.version>
        <fastdfs.version>1.26.5</fastdfs.version>
        <baidu.version>4.11.1</baidu.version>
        <junit.version>4.12</junit.version>
        <searchbox.version>6.3.1</searchbox.version>
        <elasticsearch.version>7.2.0</elasticsearch.version>
        <ali.core.version>4.1.1</ali.core.version>
        <ali.green.version>3.4.1</ali.green.version>
        <kafka.version>2.6.6</kafka.version>
        <kafka.client.version>2.5.1</kafka.client.version>
        <reflections.version>0.9.11</reflections.version>
        <swagger.version>2.9.2</swagger.version>
        <knife4j.version>2.0.2</knife4j.version>
        <com.alibaba.cloud>2.2.5.RELEASE</com.alibaba.cloud>
        <xxl.job.version>2.2.0-SNAPSHOT</xxl.job.version>
    </properties>
    <dependencies>
        <!--日志处理包-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-log4j2</artifactId>
        </dependency>
        <!-- lombok -->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>${lombok.version}</version>
            <scope>provided</scope>
        </dependency>
    </dependencies>
    <dependencyManagement>

        <dependencies>
            <!--内部依赖工程-->
            <dependency>
                <artifactId>heima-leadnews-feign-api</artifactId>
                <groupId>com.heima</groupId>
                <version>${project.version}</version>
            </dependency>
            <dependency>
                <artifactId>heima-leadnews-common</artifactId>
                <groupId>com.heima</groupId>
                <version>${project.version}</version>
            </dependency>
            <dependency>
                <artifactId>heima-leadnews-model</artifactId>
                <groupId>com.heima</groupId>
                <version>${project.version}</version>
            </dependency>
            <dependency>
                <artifactId>heima-leadnews-utils</artifactId>
                <groupId>com.heima</groupId>
                <version>${project.version}</version>
            </dependency>
            <!-- Spring boot 特殊处理包 -->
            <dependency>
                <groupId>org.reflections</groupId>
                <artifactId>reflections</artifactId>
                <version>${reflections.version}</version>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-web</artifactId>
                <!-- 排除默认的logback日志，使用log4j-->
                <exclusions>
                    <exclusion>
                        <groupId>org.springframework.boot</groupId>
                        <artifactId>spring-boot-starter-logging</artifactId>
                    </exclusion>
                    <exclusion>
                        <groupId>org.slf4j</groupId>
                        <artifactId>slf4j-log4j12</artifactId>
                    </exclusion>
                </exclusions>
                <version>${spring.boot.version}</version>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter</artifactId>
                <exclusions>
                    <exclusion>
                        <groupId>org.springframework.boot</groupId>
                        <artifactId>spring-boot-starter-logging</artifactId>
                    </exclusion>
                    <exclusion>
                        <groupId>org.slf4j</groupId>
                        <artifactId>slf4j-log4j12</artifactId>
                    </exclusion>
                </exclusions>
                <version>${spring.boot.version}</version>
            </dependency>
            <!--Apache 工具包包-->
            <dependency>
                <groupId>commons-io</groupId>
                <artifactId>commons-io</artifactId>
                <version>${commons.io.version}</version>
            </dependency>
            <dependency>
                <groupId>org.apache.commons</groupId>
                <artifactId>commons-lang3</artifactId>
                <version>${lang3.version}</version>
            </dependency>
            <!--加密处理包-->
            <dependency>
                <groupId>commons-codec</groupId>
                <artifactId>commons-codec</artifactId>
                <version>${commons.codec.version}</version>
            </dependency>
            <!-- Mysql 数据库 -->
            <dependency>
                <groupId>mysql</groupId>
                <artifactId>mysql-connector-java</artifactId>
                <version>${mysql.version}</version>
            </dependency>
            <dependency>
                <groupId>org.mybatis</groupId>
                <artifactId>mybatis</artifactId>
                <version>${mybatis.version}</version>
            </dependency>
            <dependency>
                <groupId>org.mybatis</groupId>
                <artifactId>mybatis-spring</artifactId>
                <version>${mybatis.spring.version}</version>
            </dependency>
            <!-- jsoup -->
            <dependency>
                <groupId>org.jsoup</groupId>
                <artifactId>jsoup</artifactId>
                <version>${jsoup.version}</version>
            </dependency>
            <!-- jwt -->
            <dependency>
                <groupId>io.jsonwebtoken</groupId>
                <artifactId>jjwt</artifactId>
                <version>${jwt.version}</version>
            </dependency>
            <!-- fastjson -->
            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>fastjson</artifactId>
                <version>${fastjson.version}</version>
            </dependency><dependency>
                <groupId>com.fasterxml.jackson.dataformat</groupId>
                <artifactId>jackson-dataformat-cbor</artifactId>
                <version>${fastjson.dataformat.version}</version>
            </dependency>
            <dependency>
                <groupId>com.fasterxml.jackson.dataformat</groupId>
                <artifactId>jackson-dataformat-xml</artifactId>
                <version>2.9.7</version>
            </dependency>
            <!-- spring colud -->
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>${spring.cloud.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <!--spring cloud alibaba-->
            <dependency>
                <groupId>com.alibaba.cloud</groupId>
                <artifactId>spring-cloud-alibaba-dependencies</artifactId>
                <version>${com.alibaba.cloud}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <!-- spring boot admin -->
            <dependency>
                <groupId>de.codecentric</groupId>
                <artifactId>spring-boot-admin-dependencies</artifactId>
                <version>${spring.boot.admin.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <!-- curator ZK 客户端 -->
            <dependency>
                <groupId>org.apache.curator</groupId>
                <artifactId>curator-framework</artifactId>
                <version>${curator.version}</version>
            </dependency>
            <dependency>
                <groupId>org.apache.curator</groupId>
                <artifactId>curator-recipes</artifactId>
                <version>${curator.version}</version>
            </dependency>
            <!--匹配度工具包-->
            <dependency>
                <groupId>com.hankcs</groupId>
                <artifactId>hanlp</artifactId>
                <version>${hanlp.version}</version>
            </dependency>
            <!-- fastdfs客服端 -->
            <dependency>
                <groupId>com.github.tobato</groupId>
                <artifactId>fastdfs-client</artifactId>
                <version>${fastdfs.version}</version>
            </dependency>
            <dependency>
                <groupId>com.aliyun</groupId>
                <artifactId>aliyun-java-sdk-core</artifactId>
                <version>${ali.core.version}</version>
            </dependency>
            <dependency>
                <groupId>com.aliyun</groupId>
                <artifactId>aliyun-java-sdk-green</artifactId>
                <version>${ali.green.version}</version>
            </dependency>
            <!-- junit -->
            <dependency>
                <groupId>junit</groupId>
                <artifactId>junit</artifactId>
                <version>${junit.version}</version>
            </dependency>
            <!-- kafkfa -->
            <dependency>
                <groupId>org.springframework.kafka</groupId>
                <artifactId>spring-kafka</artifactId>
                <version>${kafka.version}</version>
            </dependency>
            <dependency>
                <groupId>org.apache.kafka</groupId>
                <artifactId>kafka-streams</artifactId>
                <version>${kafka.client.version}</version>
                <exclusions>
                    <exclusion>
                        <artifactId>connect-json</artifactId>
                        <groupId>org.apache.kafka</groupId>
                    </exclusion>
                </exclusions>
            </dependency>

            <dependency>
                <groupId>org.apache.kafka</groupId>
                <artifactId>kafka-clients</artifactId>
                <version>${kafka.client.version}</version>
            </dependency>
            <dependency>
                <groupId>com.github.xiaoymin</groupId>
                <artifactId>knife4j-spring-boot-starter</artifactId>
                <version>${knife4j.version}</version>
            </dependency>
            <dependency>
                <groupId>io.springfox</groupId>
                <artifactId>springfox-swagger2</artifactId>
                <version>${swagger.version}</version>
            </dependency>
            <dependency>
                <groupId>io.springfox</groupId>
                <artifactId>springfox-swagger-ui</artifactId>
                <version>${swagger.version}</version>
            </dependency>
            <dependency>
                <groupId>com.baomidou</groupId>
                <artifactId>mybatis-plus-boot-starter</artifactId>
                <version>${mybatis.plus.version}</version>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.7.0</version>
                <configuration>
                    <source>${java.version}</source>
                    <target>${java.version}</target>
                </configuration>
            </plugin>
        </plugins>
        <resources>
            <resource>
                <directory>src/main/resources</directory>
                <includes>
                    <include>**/*.*</include>
                </includes>
                <filtering>true</filtering>
            </resource>
        </resources>
        <testResources>
            <testResource>
                <directory>src/test/resources</directory>
                <filtering>true</filtering>
            </testResource>
        </testResources>
    </build>

    <repositories>
        <repository>
            <id>spring</id>
            <url>https://maven.aliyun.com/repository/spring</url>
            <releases>
                <enabled>true</enabled>
            </releases>
            <snapshots>
                <enabled>true</enabled>
            </snapshots>
        </repository>
    </repositories>

</project>

1. 创建一个获取token 的类
   

package com.heima.utils.common;

import io.jsonwebtoken.*;

import javax.crypto.SecretKey;
import javax.crypto.spec.SecretKeySpec;
import java.util.*;

public class AppJwtUtil {

    // TOKEN的有效期一天（S）
    private static final int TOKEN_TIME_OUT = 3_600;
    // 加密KEY
    private static final String TOKEN_ENCRY_KEY = "MDk4ZjZiY2Q0NjIxZDM3M2NhZGU0ZTgzMjYyN2I0ZjY";
    // 最小刷新间隔(S)
    private static final int REFRESH_TIME = 300;

    // 生产ID
    public static String getToken(Long id){
        Map<String, Object> claimMaps = new HashMap<>();
        claimMaps.put("id",id);
        long currentTime = System.currentTimeMillis();
        return Jwts.builder()
                .setId(UUID.randomUUID().toString())
                .setIssuedAt(new Date(currentTime))  //签发时间
                .setSubject("system")  //说明
                .setIssuer("heima") //签发者信息
                .setAudience("app")  //接收用户
                .compressWith(CompressionCodecs.GZIP)  //数据压缩方式
                .signWith(SignatureAlgorithm.HS512, generalKey()) //加密方式
                .setExpiration(new Date(currentTime + TOKEN_TIME_OUT * 1000))  //过期时间戳
                .addClaims(claimMaps) //cla信息
                .compact();
    }

    /**
     * 获取token中的claims信息
     *
     * @param token
     * @return
     */
    private static Jws<Claims> getJws(String token) {
            return Jwts.parser()
                    .setSigningKey(generalKey())
                    .parseClaimsJws(token);
    }

    /**
     * 获取payload body信息
     *
     * @param token
     * @return
     */
    public static Claims getClaimsBody(String token) {
        try {
            return getJws(token).getBody();
        }catch (ExpiredJwtException e){
            return null;
        }
    }

    /**
     * 获取hearder body信息
     *
     * @param token
     * @return
     */
    public static JwsHeader getHeaderBody(String token) {
        return getJws(token).getHeader();
    }

    /**
     * 是否过期
     *
     * @param claims
     * @return -1：有效，0：有效，1：过期，2：过期
     */
    public static int verifyToken(Claims claims) {
        if(claims==null){
            return 1;
        }
        try {
            claims.getExpiration()
                    .before(new Date());
            // 需要自动刷新TOKEN
            if((claims.getExpiration().getTime()-System.currentTimeMillis())>REFRESH_TIME*1000){
                return -1;
            }else {
                return 0;
            }
        } catch (ExpiredJwtException ex) {
            return 1;
        }catch (Exception e){
            return 2;
        }
    }

    /**
     * 由字符串生成加密key
     *
     * @return
     */
    public static SecretKey generalKey() {
        byte[] encodedKey = Base64.getEncoder().encode(TOKEN_ENCRY_KEY.getBytes());
        SecretKey key = new SecretKeySpec(encodedKey, 0, encodedKey.length, "AES");
        return key;
    }

    public static void main(String[] args) {
       /* Map map = new HashMap();
        map.put("id","11");*/
        System.out.println(AppJwtUtil.getToken(1102L));
        Jws<Claims> jws = AppJwtUtil.getJws("eyJhbGciOiJIUzUxMiIsInppcCI6IkdaSVAifQ.H4sIAAAAAAAAADWLQQqEMAwA_5KzhURNt_qb1KZYQSi0wi6Lf9942NsMw3zh6AVW2DYmDGl2WabkZgreCaM6VXzhFBfJMcMARTqsxIG9Z888QLui3e3Tup5Pb81013KKmVzJTGo11nf9n8v4nMUaEY73DzTabjmDAAAA.4SuqQ42IGqCgBai6qd4RaVpVxTlZIWC826QA9kLvt9d-yVUw82gU47HDaSfOzgAcloZedYNNpUcd18Ne8vvjQA");
        Claims claims = jws.getBody();
        System.out.println(claims.get("id"));

    }

}

4.nacos注册中心的配置

（1）首先业务包结构如下

       ![](https://img-blog.csdnimg.cn/0f5713c114f4477dbca7456953d75f14.png)

（2）配置yam文件  

server:
  port: 51801
spring:
  application:
    name: leadnews-user
  cloud:
    nacos:
      discovery:
        server-addr: 127.0.0.1:8848
      config:
        server-addr: 127.0.0.1:8848
        file-extension: yml

   （3）进入nacos注册中心

       在公共环境中新建一个配置

代码如下：

bootstrap.yml

spring:
  datasource:
    driver-class-name: com.mysql.jdbc.Driver
    url: jdbc:mysql://localhost:3306/leadnews_user?useUnicode=true&characterEncoding=UTF-8&serverTimezone=UTC
    username: root
    password: 875411
# 设置Mapper接口所对应的XML文件位置，如果你在Mapper接口中有自定义方法，需要进行该配置
mybatis-plus:
  mapper-locations: classpath*:mapper/*.xml
  # 设置别名包扫描路径，通过该属性可以给包中的类注册别名
  type-aliases-package: com.heima.model.user.pojos

5.定义日志的存储信息 logbock.xml

代码如下：

<?xml version="1.0" encoding="UTF-8"?>

<configuration>
    <!--定义日志文件的存储地址,使用绝对路径-->

    <property name="LOG_HOME" value="D:/springcloud/heimaTitle/logs"/>

    <!-- Console 输出设置 -->
    <appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
        <encoder>
            <!--格式化输出：%d表示日期，%thread表示线程名，%-5level：级别从左显示5个字符宽度%msg：日志消息，%n是换行符-->
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
            <charset>utf8</charset>
        </encoder>
    </appender>

    <!-- 按照每天生成日志文件 -->
    <appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <!--日志文件输出的文件名-->
            <fileNamePattern>${LOG_HOME}/leadnews.%d{yyyy-MM-dd}.log</fileNamePattern>
        </rollingPolicy>
        <encoder>
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
        </encoder>
    </appender>

    <!-- 异步输出 -->
    <appender name="ASYNC" class="ch.qos.logback.classic.AsyncAppender">
        <!-- 不丢失日志.默认的,如果队列的80%已满,则会丢弃TRACT、DEBUG、INFO级别的日志 -->
        <discardingThreshold>0</discardingThreshold>
        <!-- 更改默认的队列的深度,该值会影响性能.默认值为256 -->
        <queueSize>512</queueSize>
        <!-- 添加附加的appender,最多只能添加一个 -->
        <appender-ref ref="FILE"/>
    </appender>

    <logger name="org.apache.ibatis.cache.decorators.LoggingCache" level="DEBUG" additivity="false">
        <appender-ref ref="CONSOLE"/>
    </logger>
    <logger name="org.springframework.boot" level="debug"/>
    <root level="info">
        <!--<appender-ref ref="ASYNC"/>-->
        <appender-ref ref="FILE"/>
        <appender-ref ref="CONSOLE"/>
    </root>
</configuration>

二、业务逻辑的编写

1.创建接口 ApUserLoginController类

package com.heima.user.controller.v1;

import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.user.dtos.LoginDto;
import com.heima.user.service.ApUserService;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping("/api/v1/login")
@Api(value = "app端用户登录",tags = "app端用户登录")
public class ApUserLoginController {

    @Autowired
    private ApUserService apUserService;

    @PostMapping("/login_auth")
    @ApiOperation("用户登录")
    public ResponseResult login(@RequestBody LoginDto dto){
        
        return apUserService.login(dto);
    }
}

2.根据MP，定义mapper层 ApUserMapper

package com.heima.user.mapper;

import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.heima.model.user.pojos.ApUser;
import org.apache.ibatis.annotations.Mapper;

@Mapper
public interface ApUserMapper extends BaseMapper<ApUser> {
}

3.编写业务层代码

 业务层接口：

package com.heima.user.service;

import com.baomidou.mybatisplus.extension.service.IService;
import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.user.dtos.LoginDto;
import com.heima.model.user.pojos.ApUser;

public interface ApUserService extends IService<ApUser> {
    /**
     * app端登录功能
     * @param dto
     * @return
     */
    public ResponseResult login(LoginDto dto);
}

业务层实现类：

  （1）首先判断是正常登录还是游客登录

        使用if语句进行判断  用户名是否为空  密码是否为空

if(StringUtils.isNotBlank(dto.getPhone()) && StringUtils.isNotBlank(dto.getPassword()))

    （2）如果不为空创建查询条件，查询用户名是否存在

       LambdaQueryWrapper<ApUser> queryWrapper = new LambdaQueryWrapper<>();            queryWrapper.eq(ApUser::getPhone,dto.getPhone());

     （3）由MP调用mapper层的selectOne方法 根据封装条件去进行查询

         ApUser dbUser = apUserMapper.selectOne(queryWrapper);

     （4）如果用户名不存在（AppHttpCodeEnum类的代码在后面补充里会写到）

      return ResponseResult.errorResult(AppHttpCodeEnum.DATA_NOT_EXIST,"用户信息不存在");

      （5）如果用户名存在继续比对密码

       首先拿到盐以及密码

        String salt = dbUser.getSalt(); String password = dto.getPassword();

      其次调用DigestUtils.md5DigestAsHex方法进行md5加密处理

     String pswd = DigestUtils.md5DigestAsHex((password + salt).getBytes());

      最后进行判断  如果拿到的密码不一样返回错误信息

       if(!pswd.equals(dbUser.getPassword())){ return ResponseResult.errorResult(AppHttpCodeEnum.LOGIN_PASSWORD_ERROR); }

       如果拿到的密码一样获取数据拿到token

  String token = AppJwtUtil.getToken(dbUser.getId().longValue());

  Map<String,Object> map = new HashMap<>();

  map.put("token",token);

  //盐不返回 密码不返回 dbUser.setSalt(""); dbUser.setPassword("");

   map.put("user",dbUser);

   return ResponseResult.okResult(map);

（6） 如果是游客登录

     设置token为0并返回

     //2.游客登录 Map<String,Object> map = new HashMap<>();

    //游客登录默认token为0

    map.put("token",AppJwtUtil.getToken(0L)); return ResponseResult.okResult(map);

业务具体代码如下：

package com.heima.user.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.common.enums.AppHttpCodeEnum;
import com.heima.model.user.dtos.LoginDto;
import com.heima.model.user.pojos.ApUser;
import com.heima.user.mapper.ApUserMapper;
import com.heima.user.service.ApUserService;
import com.heima.utils.common.AppJwtUtil;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.DigestUtils;

import java.util.HashMap;
import java.util.Map;

@Service
@Transactional
@Slf4j
public class ApUserServiceImpl extends ServiceImpl<ApUserMapper, ApUser> implements ApUserService {
    /**
     * app端登录功能
     * @param dto
     * @return
     */
    @Autowired
    private ApUserMapper apUserMapper;
    @Override
    public ResponseResult login(LoginDto dto) {
        //1.正常登录 用户名和密码
        if(StringUtils.isNotBlank(dto.getPhone()) && StringUtils.isNotBlank(dto.getPassword())){
            //1.1 根据手机号查询用户信息
            LambdaQueryWrapper<ApUser> queryWrapper = new LambdaQueryWrapper<>();
            queryWrapper.eq(ApUser::getPhone,dto.getPhone());
            ApUser dbUser = apUserMapper.selectOne(queryWrapper);
            //ApUser dbUser = getOne(Wrappers.<ApUser>lambdaQuery().eq(ApUser::getPhone, dto.getPhone()));
            if(dbUser == null){
                return ResponseResult.errorResult(AppHttpCodeEnum.DATA_NOT_EXIST,"用户信息不存在");
            }

            //1.2 比对密码
            //拿到盐
            String salt = dbUser.getSalt();
            String password = dto.getPassword();
            //md5加密
            String pswd = DigestUtils.md5DigestAsHex((password + salt).getBytes());
            if(!pswd.equals(dbUser.getPassword())){
                return ResponseResult.errorResult(AppHttpCodeEnum.LOGIN_PASSWORD_ERROR);
            }

            //1.3 返回数据  jwt  user
            //longValue())也就是将包装类中的数据拆箱成基本数据类型。
            String token = AppJwtUtil.getToken(dbUser.getId().longValue());
            Map<String,Object> map = new HashMap<>();
            map.put("token",token);
            //盐不返回   密码不返回
            dbUser.setSalt("");
            dbUser.setPassword("");
            map.put("user",dbUser);

            return ResponseResult.okResult(map);
        }else {
            //2.游客登录
            Map<String,Object> map = new HashMap<>();
            //游客登录默认token为0
            map.put("token",AppJwtUtil.getToken(0L));
            return ResponseResult.okResult(map);
        }

    }
}

三、补充类

1.启动类的代码补充

package com.heima.user;

import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;

@SpringBootApplication
@EnableDiscoveryClient
@MapperScan("com.heima.user.mapper")
public class UserApplication {

    public static void main(String[] args) {
        SpringApplication.run(UserApplication.class,args);
    }
}

2.实体类的代码补充

package com.heima.model.user.pojos;

import com.baomidou.mybatisplus.annotation.IdType;
import com.baomidou.mybatisplus.annotation.TableField;
import com.baomidou.mybatisplus.annotation.TableId;
import com.baomidou.mybatisplus.annotation.TableName;
import lombok.Data;

import java.io.Serializable;
import java.util.Date;

/**
 * <p>
 * APP用户信息表
 * </p>
 *
 * @author itheima
 */
@Data
@TableName("ap_user")
public class ApUser implements Serializable {

    private static final long serialVersionUID = 1L;

    /**
     * 主键
     */
    @TableId(value = "id", type = IdType.AUTO)
    private Integer id;

    /**
     * 密码、通信等加密盐
     */
    @TableField("salt")
    private String salt;

    /**
     * 用户名
     */
    @TableField("name")
    private String name;

    /**
     * 密码,md5加密
     */
    @TableField("password")
    private String password;

    /**
     * 手机号
     */
    @TableField("phone")
    private String phone;

    /**
     * 头像
     */
    @TableField("image")
    private String image;

    /**
     * 0 男
            1 女
            2 未知
     */
    @TableField("sex")
    private Boolean sex;

    /**
     * 0 未
            1 是
     */
    @TableField("is_certification")
    private Boolean certification;

    /**
     * 是否身份认证
     */
    @TableField("is_identity_authentication")
    private Boolean identityAuthentication;

    /**
     * 0正常
            1锁定
     */
    @TableField("status")
    private Boolean status;

    /**
     * 0 普通用户
            1 自媒体人
            2 大V
     */
    @TableField("flag")
    private Short flag;

    /**
     * 注册时间
     */
    @TableField("created_time")
    private Date createdTime;

}

3.前端传入参数DTO的补充

package com.heima.model.user.dtos;

import io.swagger.annotations.ApiModelProperty;
import lombok.Data;

@Data
public class LoginDto {

    /**
     * 手机号
     */
    @ApiModelProperty(value = "手机号",required = true)
    private String phone;

    /**
     * 密码
     */
    @ApiModelProperty(value = "密码",required = true)
    private String password;
}

4.状态信息枚举类的补充

package com.heima.model.common.enums;

public enum AppHttpCodeEnum {

    // 成功段0
    SUCCESS(200,"操作成功"),
    // 登录段1~50
    NEED_LOGIN(1,"需要登录后操作"),
    LOGIN_PASSWORD_ERROR(2,"密码错误"),
    // TOKEN50~100
    TOKEN_INVALID(50,"无效的TOKEN"),
    TOKEN_EXPIRE(51,"TOKEN已过期"),
    TOKEN_REQUIRE(52,"TOKEN是必须的"),
    // SIGN验签 100~120
    SIGN_INVALID(100,"无效的SIGN"),
    SIG_TIMEOUT(101,"SIGN已过期"),
    // 参数错误 500~1000
    PARAM_REQUIRE(500,"缺少参数"),
    PARAM_INVALID(501,"无效参数"),
    PARAM_IMAGE_FORMAT_ERROR(502,"图片格式有误"),
    SERVER_ERROR(503,"服务器内部错误"),
    // 数据错误 1000~2000
    DATA_EXIST(1000,"数据已经存在"),
    AP_USER_DATA_NOT_EXIST(1001,"ApUser数据不存在"),
    DATA_NOT_EXIST(1002,"数据不存在"),
    // 数据错误 3000~3500
    NO_OPERATOR_AUTH(3000,"无权限操作"),
    NEED_ADMIND(3001,"需要管理员权限");

    int code;
    String errorMessage;

    AppHttpCodeEnum(int code, String errorMessage){
        this.code = code;
        this.errorMessage = errorMessage;
    }

    public int getCode() {
        return code;
    }

    public String getErrorMessage() {
        return errorMessage;
    }
}

5.返回值的封装对象的代码补充

package com.heima.model.common.dtos;

import com.alibaba.fastjson.JSON;
import com.heima.model.common.enums.AppHttpCodeEnum;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * 通用的结果返回类
 * @param <T>
 */
public class ResponseResult<T> implements Serializable {

    private String host;

    private Integer code;

    private String errorMessage;

    private T data;

    public ResponseResult() {
        this.code = 200;
    }

    public ResponseResult(Integer code, T data) {
        this.code = code;
        this.data = data;
    }

    public ResponseResult(Integer code, String msg, T data) {
        this.code = code;
        this.errorMessage = msg;
        this.data = data;
    }

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

    public static ResponseResult errorResult(int code, String msg) {
        ResponseResult result = new ResponseResult();
        return result.error(code, msg);
    }

    public static ResponseResult okResult(int code, String msg) {
        ResponseResult result = new ResponseResult();
        return result.ok(code, null, msg);
    }

    public static ResponseResult okResult(Object data) {
        ResponseResult result = setAppHttpCodeEnum(AppHttpCodeEnum.SUCCESS, AppHttpCodeEnum.SUCCESS.getErrorMessage());
        if(data!=null) {
            result.setData(data);
        }
        return result;
    }

    public static ResponseResult errorResult(AppHttpCodeEnum enums){
        return setAppHttpCodeEnum(enums,enums.getErrorMessage());
    }

    public static ResponseResult errorResult(AppHttpCodeEnum enums, String errorMessage){
        return setAppHttpCodeEnum(enums,errorMessage);
    }

    public static ResponseResult setAppHttpCodeEnum(AppHttpCodeEnum enums){
        return okResult(enums.getCode(),enums.getErrorMessage());
    }

    private static ResponseResult setAppHttpCodeEnum(AppHttpCodeEnum enums, String errorMessage){
        return okResult(enums.getCode(),errorMessage);
    }

    public ResponseResult<?> error(Integer code, String msg) {
        this.code = code;
        this.errorMessage = msg;
        return this;
    }

    public ResponseResult<?> ok(Integer code, T data) {
        this.code = code;
        this.data = data;
        return this;
    }

    public ResponseResult<?> ok(Integer code, T data, String msg) {
        this.code = code;
        this.data = data;
        this.errorMessage = msg;
        return this;
    }

    public ResponseResult<?> ok(T data) {
        this.data = data;
        return this;
    }

    public Integer getCode() {
        return code;
    }

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

    public String getErrorMessage() {
        return errorMessage;
    }

    public void setErrorMessage(String errorMessage) {
        this.errorMessage = errorMessage;
    }

    public T getData() {
        return data;
    }

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

    public String getHost() {
        return host;
    }

    public void setHost(String host) {
        this.host = host;
    }

    public static void main(String[] args) {
        //前置
        /*AppHttpCodeEnum success = AppHttpCodeEnum.SUCCESS;
        System.out.println(success.getCode());
        System.out.println(success.getErrorMessage());*/

        //查询一个对象
        /*Map map = new HashMap();
        map.put("name","zhangsan");
        map.put("age",18);
        ResponseResult result = ResponseResult.okResult(map);
        System.out.println(JSON.toJSONString(result));*/

        //新增，修改，删除  在项目中统一返回成功即可
       /* ResponseResult result = ResponseResult.errorResult(AppHttpCodeEnum.SUCCESS);
        System.out.println(JSON.toJSONString(result));*/

        //根据不用的业务返回不同的提示信息  比如：当前操作需要登录、参数错误
        /*ResponseResult result = ResponseResult.errorResult(AppHttpCodeEnum.NEED_LOGIN);
        System.out.println(JSON.toJSONString(result));*/

        //查询分页信息
        PageResponseResult responseResult = new PageResponseResult(1,5,50);
        List list = new ArrayList();
        list.add("itcast");
        list.add("itheima");
        responseResult.setData(list);
        System.out.println(JSON.toJSONString(responseResult));

    }

}

测试：