目录

一、SpringBoot项目简介

1、技术点介绍

2、数据表介绍

二、构建SpringBoot项目

1.创建SpringBoot项目并配置POM

2.配置application.yml

3.启动类配置

4.首页访问 ,导入前端页面及页面对应的js/css/images文件

三、实现首页功能

0）导入帮助类

config：

exception:

Generator：

Utils：

在generater类运行自动生成代码：

1）创建公共跳转控制器PageController

2）使用Mybatis-plus反向生成代码(Goods商品信息)

3）创建IndexController并定义商品查询请求处理方法

四、用户明文登录

创建UserController类实现用户登录

        1.1）构建UserDto，定义mobile和password属性

        1.2）创建UserController类

        1.3）定义userLogin(UserDto userDto,HttpServletRequest req,HttpServletResponse resp)

        1.4）定义响应封装类JsonResponseBody和JsonResponseStatus

        1.5）在IUserService中定义userLogin(UserVo userVo)，并返回JsonResponseBody

        1.6）全局异常处理

        1.7）自定义注解参数校验（JSR303）

login.js:

测试多种情况: 

五、前端及数据库密码加密

UserServiceImpl.java变更如下

login.js变更如下:

六、服务端客户端登录密码管理

UserServiceImpl.java变更如下

一、SpringBoot项目简介

1、技术点介绍

前端：Freemarker、jQuery
后端：SpringBoot、MyBatisPlus、Lombok
中间件：Redis

2、数据表介绍

用户表：t_user

商品表：t_goods

订单表：t_order

订单项表：t_order_item

数据源表：t_dict_type

数据项表：t_dict_data

后续微服务秒杀项目所用：
秒杀商品表：t_seckill_goods
秒杀订单表：t_seckill_order

二、构建SpringBoot项目

起初搭建时，可以不勾选任何组件

1.创建SpringBoot项目并配置POM

pom依赖：

4.0.0org.springframework.bootspring-boot-starter-parent2.3.9.RELEASE com.ycxspbootpro0.0.1-SNAPSHOTspbootproDemo project for Spring Boot1.8org.springframework.bootspring-boot-starter-freemarkerorg.springframework.bootspring-boot-starter-webmysqlmysql-connector-javaruntime5.1.44org.projectlomboklomboktrueorg.springframework.bootspring-boot-starter-testtestorg.junit.vintagejunit-vintage-enginejunitjunittestcom.baomidoumybatis-plus-boot-starter3.4.0com.baomidoumybatis-plus-generator3.4.0com.zaxxerHikariCPcommons-codeccommons-codecorg.apache.commonscommons-lang33.6org.springframework.bootspring-boot-starter-validationorg.springframework.bootspring-boot-starter-data-redisorg.apache.commonscommons-pool2com.alipay.sdkalipay-easysdk2.0.1org.springframework.bootspring-boot-maven-plugin

2.配置application.yml

1）添加数据库及连接池配置
2）添加freemarker配置
3）添加mybatis-plus配置
4）添加logging日志配置

yml文件：

server:port: 8081servlet:context-path: /
spring:datasource:url: jdbc:mysql://localhost:3306/spbootpro?useSSL=false&useUnicode=true&useJDBCCompliantTimezoneShift=true&useLegacyDatetimeCode=false&serverTimezone=UTC&characterEncoding=UTF8driver-class-name: com.mysql.jdbc.Driverpassword: 1234username: roothikari:# 最小空闲连接数量minimum-idle: 5# 空闲连接存活最大时间，默认600000（10分钟）idle-timeout: 180000# 连接池最大连接数，默认是10maximum-pool-size: 10# 此属性控制从池返回的连接的默认自动提交行为,默认值：trueauto-commit: true# 连接池名称pool-name: MyHikariCP# 此属性控制池中连接的最长生命周期，值0表示无限生命周期，默认1800000即30分钟max-lifetime: 1800000# 数据库连接超时时间,默认30秒，即30000connection-timeout: 30000freemarker:#设置编码格式charset: UTF-8#后缀suffix:#文档类型content-type: text/html#模板前端template-loader-path: classpath:/templates/#启用模板enabled: truemvc:static-path-pattern: /static/**redis:#服务端IPhost: 192.168.122.128#端口port: 6379#密码password: 123456#选择数据库database: 9#超时时间timeout: 10000ms#Lettuce的连接是基于Netty的，连接实例（StatefulRedisConnection）可以在多个线程间并发访问#Lettuce线程安全，Jedis线程非安全lettuce:pool:#最大连接数，默认8max-active: 8#最大连接阻塞等待时间，默认-1max-wait: 10000ms#最大空闲连接，默认8max-idle: 200#最小空闲连接，默认0min-idle: 5
#mybatis-plus配置
mybatis-plus:#所对应的 XML 文件位置mapper-locations: classpath*:/mapper/*Mapper.xml#别名包扫描路径type-aliases-package: com.ycx.spbootpro.modelconfiguration:#驼峰命名规则map-underscore-to-camel-case: true
#日志配置
logging:level:com.ycx.spbootpro.mapper: debug

3.启动类配置

package com.ycx.spbootpro;import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.transaction.annotation.EnableTransactionManagement;@MapperScan({"com.ycx.spbootpro.mapper"})
@EnableTransactionManagement
@SpringBootApplication
public class SpbootproApplication {public static void main(String[] args) {SpringApplication.run(SpbootproApplication.class, args);}}

4.首页访问 ,导入前端页面及页面对应的js/css/images文件

 IndexController ：

package com.ycx.spbootpro.controller;import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;/*** @author 杨总* @create 2022-11-04 21:02*/
@Controller
public class IndexController {@RequestMapping("/")public String index(){
//        前缀+逻辑视图名+后缀return "index.html";}
}

运行访问：

三、实现首页功能

0）导入帮助类

config：

RedisConfig ：

package com.ycx.spbootpro.config;import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;@Configuration
public class RedisConfig {@Beanpublic RedisTemplate redisTemplate(RedisConnectionFactory connectionFactory){RedisTemplate redisTemplate=new RedisTemplate<>();redisTemplate.setStringSerializer(new StringRedisSerializer());redisTemplate.setValueSerializer(new GenericJackson2JsonRedisSerializer());redisTemplate.setHashKeySerializer(new StringRedisSerializer());redisTemplate.setHashValueSerializer(new GenericJackson2JsonRedisSerializer());redisTemplate.setConnectionFactory(connectionFactory);redisTemplate.afterPropertiesSet();return redisTemplate;}
}

 exception:

 BusinessException ：

package com.ycx.spbootpro.exception;import com.ycx.spbootpro.utils.JsonResponseStatus;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;@Data
@AllArgsConstructor
@NoArgsConstructor
public class BusinessException extends RuntimeException {private JsonResponseStatus jsonResponseStatus;
}

GlobalExceptionHandler ：

package com.ycx.spbootpro.exception;import com.ycx.spbootpro.utils.JsonResponseBody;
import com.ycx.spbootpro.utils.JsonResponseStatus;
import org.springframework.validation.BindException;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RestControllerAdvice;@RestControllerAdvice
public class GlobalExceptionHandler {@ExceptionHandlerpublic JsonResponseBody exceptionHandler(Exception e){JsonResponseBody jsonResponseBody=null;e.printStackTrace();if(e instanceof BusinessException){BusinessException ex= (BusinessException) e;jsonResponseBody=new JsonResponseBody<>(ex.getJsonResponseStatus());}else if(e instanceof BindException){BindException ex= (BindException) e;String msg = ex.getBindingResult().getAllErrors().get(0).getDefaultMessage();jsonResponseBody=new JsonResponseBody<>(JsonResponseStatus.BIND_ERROR);jsonResponseBody.setMsg(msg);}else{System.out.println("aaaaaa");}return jsonResponseBody;}
}

Generator：

CodeGenerator ：

package com.ycx.spbootpro.generator;import com.baomidou.mybatisplus.core.exceptions.MybatisPlusException;
import com.baomidou.mybatisplus.core.toolkit.StringPool;
import com.baomidou.mybatisplus.core.toolkit.StringUtils;
import com.baomidou.mybatisplus.generator.AutoGenerator;
import com.baomidou.mybatisplus.generator.InjectionConfig;
import com.baomidou.mybatisplus.generator.config.*;
import com.baomidou.mybatisplus.generator.config.po.TableInfo;
import com.baomidou.mybatisplus.generator.config.rules.NamingStrategy;
import com.baomidou.mybatisplus.generator.engine.FreemarkerTemplateEngine;import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;public class CodeGenerator {/*** 
* 读取控制台内容* 
*/public static String scanner(String tip) {Scanner scanner = new Scanner(System.in);StringBuilder help = new StringBuilder();help.append("请输入" + tip + "：");System.out.println(help.toString());if (scanner.hasNext()) {String ipt = scanner.next();if (StringUtils.isNotBlank(ipt)) {return ipt;}}throw new MybatisPlusException("请输入正确的" + tip + "！");}public static void main(String[] args) {// 代码生成器AutoGenerator mpg = new AutoGenerator();// 全局配置GlobalConfig gc = new GlobalConfig();String projectPath = System.getProperty("user.dir") + "/spbootpro";gc.setOutputDir(projectPath + "/src/main/java");gc.setAuthor("yangzong");gc.setOpen(false);gc.setBaseColumnList(true);gc.setBaseResultMap(true);// gc.setSwagger2(true); 实体属性 Swagger2 注解mpg.setGlobalConfig(gc);// 数据源配置DataSourceConfig dsc = new DataSourceConfig();dsc.setUrl("jdbc:mysql://localhost:3306/spbootpro?useUnicode=true&useSSL=false&characterEncoding=utf8");// dsc.setSchemaName("public");dsc.setDriverName("com.mysql.jdbc.Driver");dsc.setUsername("root");dsc.setPassword("1234");mpg.setDataSource(dsc);// 包配置PackageConfig pc = new PackageConfig();//pc.setModuleName(scanner("模块名"));pc.setParent("com.ycx.spbootpro");//设置包名pc.setEntity("model");mpg.setPackageInfo(pc);// 自定义配置InjectionConfig cfg = new InjectionConfig() {@Overridepublic void initMap() {// to do nothing}};// 如果模板引擎是 freemarkerString templatePath = "/templates/mybatis-generator/mapper2.xml.ftl";// 如果模板引擎是 velocity// String templatePath = "/templates/mapper.xml.vm";// 自定义输出配置List focList = new ArrayList<>();// 自定义配置会被优先输出focList.add(new FileOutConfig(templatePath) {@Overridepublic String outputFile(TableInfo tableInfo) {// 自定义输出文件名 ， 如果你 Entity 设置了前后缀、此处注意 xml 的名称会跟着发生变化！！return projectPath + "/src/main/resources/mapper/" + pc.getModuleName()+ "/" + tableInfo.getEntityName() + "Mapper" + StringPool.DOT_XML;}});/*cfg.setFileCreate(new IFileCreate() {@Overridepublic boolean isCreate(ConfigBuilder configBuilder, FileType fileType, String filePath) {// 判断自定义文件夹是否需要创建checkDir("调用默认方法创建的目录，自定义目录用");if (fileType == FileType.MAPPER) {// 已经生成 mapper 文件判断存在，不想重新生成返回 falsereturn !new File(filePath).exists();}// 允许生成模板文件return true;}});*/cfg.setFileOutConfigList(focList);mpg.setCfg(cfg);// 配置模板TemplateConfig templateConfig = new TemplateConfig();// 配置自定义输出模板//指定自定义模板路径，注意不要带上.ftl/.vm, 会根据使用的模板引擎自动识别templateConfig.setMapper("templates/mybatis-generator/mapper2.java");templateConfig.setEntity("templates/mybatis-generator/entity2.java");templateConfig.setService("templates/mybatis-generator/service2.java");templateConfig.setServiceImpl("templates/mybatis-generator/serviceImpl2.java");templateConfig.setController("templates/mybatis-generator/controller2.java");templateConfig.setXml(null);mpg.setTemplate(templateConfig);// 策略配置StrategyConfig strategy = new StrategyConfig();strategy.setNaming(NamingStrategy.underline_to_camel);strategy.setColumnNaming(NamingStrategy.underline_to_camel);//strategy.setSuperEntityClass("你自己的父类实体,没有就不用设置!");strategy.setEntityLombokModel(true);strategy.setRestControllerStyle(true);strategy.setEntitySerialVersionUID(false);// 公共父类//strategy.setSuperControllerClass("你自己的父类控制器,没有就不用设置!");// 写于父类中的公共字段strategy.setSuperEntityColumns("id");strategy.setInclude(scanner("表名，多个英文逗号分割").split(","));strategy.setControllerMappingHyphenStyle(true);strategy.setTablePrefix("t_");mpg.setStrategy(strategy);mpg.setTemplateEngine(new FreemarkerTemplateEngine());mpg.execute();}
}

Utils：

CookieUtils ：

package com.ycx.spbootpro.utils;import lombok.extern.slf4j.Slf4j;import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.UnsupportedEncodingException;
import java.net.URLDecoder;
import java.net.URLEncoder;@Slf4j
public class CookieUtils {/**** @Description: 得到Cookie的值, 不编码* @param request* @param cookieName* @return*/public static String getCookieValue(HttpServletRequest request, String cookieName) {return getCookieValue(request, cookieName, false);}/**** @Description: 得到Cookie的值* @param request* @param cookieName* @param isDecoder* @return*/public static String getCookieValue(HttpServletRequest request, String cookieName, boolean isDecoder) {Cookie[] cookieList = request.getCookies();if (cookieList == null || cookieName == null) {return null;}String retValue = null;try {for (int i = 0; i < cookieList.length; i++) {if (cookieList[i].getName().equals(cookieName)) {if (isDecoder) {retValue = URLDecoder.decode(cookieList[i].getValue(), "UTF-8");} else {retValue = cookieList[i].getValue();}break;}}} catch (UnsupportedEncodingException e) {e.printStackTrace();}return retValue;}/**** @Description: 得到Cookie的值* @param request* @param cookieName* @param encodeString* @return*/public static String getCookieValue(HttpServletRequest request, String cookieName, String encodeString) {Cookie[] cookieList = request.getCookies();if (cookieList == null || cookieName == null) {return null;}String retValue = null;try {for (int i = 0; i < cookieList.length; i++) {if (cookieList[i].getName().equals(cookieName)) {retValue = URLDecoder.decode(cookieList[i].getValue(), encodeString);break;}}} catch (UnsupportedEncodingException e) {e.printStackTrace();}return retValue;}/**** @Description: 设置Cookie的值 不设置生效时间默认浏览器关闭即失效,也不编码* @param request* @param response* @param cookieName* @param cookieValue*/public static void setCookie(HttpServletRequest request, HttpServletResponse response, String cookieName,String cookieValue) {setCookie(request, response, cookieName, cookieValue, -1);}/**** @Description: 设置Cookie的值 在指定时间内生效,但不编码* @param request* @param response* @param cookieName* @param cookieValue* @param cookieMaxage*/public static void setCookie(HttpServletRequest request, HttpServletResponse response, String cookieName,String cookieValue, int cookieMaxage) {setCookie(request, response, cookieName, cookieValue, cookieMaxage, false);}/**** @Description: 设置Cookie的值 不设置生效时间,但编码* 在服务器被创建，返回给客户端，并且保存客户端* 如果设置了SETMAXAGE(int seconds)，会把cookie保存在客户端的硬盘中* 如果没有设置，会默认把cookie保存在浏览器的内存中* 一旦设置setPath()：只能通过设置的路径才能获取到当前的cookie信息* @param request* @param response* @param cookieName* @param cookieValue* @param isEncode*/public static void setCookie(HttpServletRequest request, HttpServletResponse response, String cookieName,String cookieValue, boolean isEncode) {setCookie(request, response, cookieName, cookieValue, -1, isEncode);}/**** @Description: 设置Cookie的值 在指定时间内生效, 编码参数* @param request* @param response* @param cookieName* @param cookieValue* @param cookieMaxage* @param isEncode*/public static void setCookie(HttpServletRequest request, HttpServletResponse response, String cookieName,String cookieValue, int cookieMaxage, boolean isEncode) {doSetCookie(request, response, cookieName, cookieValue, cookieMaxage, isEncode);}/**** @Description: 设置Cookie的值 在指定时间内生效, 编码参数(指定编码)* @param request* @param response* @param cookieName* @param cookieValue* @param cookieMaxage* @param encodeString*/public static void setCookie(HttpServletRequest request, HttpServletResponse response, String cookieName,String cookieValue, int cookieMaxage, String encodeString) {doSetCookie(request, response, cookieName, cookieValue, cookieMaxage, encodeString);}/**** @Description: 删除Cookie带cookie域名* @param request* @param response* @param cookieName*/public static void deleteCookie(HttpServletRequest request, HttpServletResponse response,String cookieName) {doSetCookie(request, response, cookieName, null, -1, false);}/**** @Description: 设置Cookie的值，并使其在指定时间内生效* @param request* @param response* @param cookieName* @param cookieValue* @param cookieMaxage	cookie生效的最大秒数* @param isEncode*/private static final void doSetCookie(HttpServletRequest request, HttpServletResponse response,String cookieName, String cookieValue, int cookieMaxage, boolean isEncode) {try {if (cookieValue == null) {cookieValue = "";} else if (isEncode) {cookieValue = URLEncoder.encode(cookieValue, "utf-8");}Cookie cookie = new Cookie(cookieName, cookieValue);if (cookieMaxage > 0)cookie.setMaxAge(cookieMaxage);if (null != request) {// 设置域名的cookieString domainName = getDomainName(request);log.info("========== domainName: {} ==========", domainName);if (!"localhost".equals(domainName)) {cookie.setDomain(domainName);}}cookie.setPath("/");response.addCookie(cookie);} catch (Exception e) {e.printStackTrace();}}/**** @Description: 设置Cookie的值，并使其在指定时间内生效* @param request* @param response* @param cookieName* @param cookieValue* @param cookieMaxage	cookie生效的最大秒数* @param encodeString*/private static final void doSetCookie(HttpServletRequest request, HttpServletResponse response,String cookieName, String cookieValue, int cookieMaxage, String encodeString) {try {if (cookieValue == null) {cookieValue = "";} else {cookieValue = URLEncoder.encode(cookieValue, encodeString);}Cookie cookie = new Cookie(cookieName, cookieValue);if (cookieMaxage > 0)cookie.setMaxAge(cookieMaxage);if (null != request) {// 设置域名的cookieString domainName = getDomainName(request);log.info("========== domainName: {} ==========", domainName);if (!"localhost".equals(domainName)) {cookie.setDomain(domainName);}}cookie.setPath("/");response.addCookie(cookie);} catch (Exception e) {e.printStackTrace();}}/**** @Description: 得到cookie的域名* @return*/private static final String getDomainName(HttpServletRequest request) {String domainName = null;String serverName = request.getRequestURL().toString();if (serverName == null || serverName.equals("")) {domainName = "";} else {serverName = serverName.toLowerCase();serverName = serverName.substring(7);final int end = serverName.indexOf("/");serverName = serverName.substring(0, end);if (serverName.indexOf(":") > 0) {String[] ary = serverName.split("\\:");serverName = ary[0];}final String[] domains = serverName.split("\\.");int len = domains.length;if (len > 3 && !isIp(serverName)) {// www.xxx.com.cndomainName = "." + domains[len - 3] + "." + domains[len - 2] + "." + domains[len - 1];} else if (len <= 3 && len > 1) {// xxx.com or xxx.cndomainName = "." + domains[len - 2] + "." + domains[len - 1];} else {domainName = serverName;}}return domainName;}public static String trimSpaces(String IP){//去掉IP字符串前后所有的空格while(IP.startsWith(" ")){IP= IP.substring(1,IP.length()).trim();}while(IP.endsWith(" ")){IP= IP.substring(0,IP.length()-1).trim();}return IP;}public static boolean isIp(String IP){//判断是否是一个IPboolean b = false;IP = trimSpaces(IP);if(IP.matches("\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}")){String s[] = IP.split("\\.");if(Integer.parseInt(s[0])<255)if(Integer.parseInt(s[1])<255)if(Integer.parseInt(s[2])<255)if(Integer.parseInt(s[3])<255)b = true;}return b;}
}

DataUtils：

package com.ycx.spbootpro.utils;import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;public class DataUtils {/*** 转换方法，基于商品的排版情况（一行三列、一行四列等等）进行数据分行处理* @param cols  一行显示几列* @param goods 需要筛选的数据集* @return*/public Map> transfor(int cols, List goods){Map> data=new HashMap<>();List rs=new ArrayList<>();int len=goods.size();for (int i = 0; i < len; i++) {rs.add(goods.get(i));if((i+1)%cols==0){data.put("goods"+(i+1),rs);if(i==len-1)break;rs=new ArrayList<>();continue;}if(i==len-1){data.put("goods"+(i+1),rs);}}return data;}
}

JsonResponseBody：

package com.ycx.spbootpro.utils;import lombok.Data;import java.io.Serializable;/*** 响应封装类*/
@Data
public class JsonResponseBody implements Serializable {private String msg="OK";private T data;private Integer code;private Integer total;public JsonResponseBody(){this.data=null;this.code=JsonResponseStatus.SUCCESS.getCode();}public JsonResponseBody(T data){this.data=data;this.code=JsonResponseStatus.SUCCESS.getCode();}public JsonResponseBody(T data,Integer total){this.data=data;this.total=total;this.code=JsonResponseStatus.SUCCESS.getCode();}public JsonResponseBody(JsonResponseStatus jsonResponseStatus){this.msg=jsonResponseStatus.getMsg();this.code=jsonResponseStatus.getCode();}public JsonResponseBody(JsonResponseStatus jsonResponseStatus,T data){this.data=data;this.msg=jsonResponseStatus.getMsg();this.code=jsonResponseStatus.getCode();}
}

 JsonResponseStatus ：

package com.ycx.spbootpro.utils;import lombok.AllArgsConstructor;
import lombok.Getter;
import lombok.ToString;@Getter
@ToString
@AllArgsConstructor
public enum JsonResponseStatus {SUCCESS(200,"OK"),ERROR(500,"内部错误"),USER_LOGIN_ERROR(100101,"用户名或者密码错误"),USER_MOBILE_ERROR(100102,"手机号码格式错误"),USER_PASSWORD_ERROR(100103,"用户密码错误"),USER_USERNAME_ERROR(100104,"账号不存在"),BIND_ERROR(200101,"参数校验异常"),TOKEN_EEROR(200102,"token令牌失效或已过期");private final Integer code;private final String msg;
}

MD5Utils ：

package com.ycx.spbootpro.utils;import org.apache.commons.codec.digest.DigestUtils;
import org.springframework.stereotype.Component;import java.util.UUID;/*** MD5加密* 用户端：password=MD5(明文+固定Salt)* 服务端：password=MD5(用户输入+随机Salt)* 用户端MD5加密是为了防止用户密码在网络中明文传输，服务端MD5加密是为了提高密码安全性，双重保险。*/
@Component
public class MD5Utils {//加密盐，与前端一致private static String salt="f1g2h3j4";/*** md5加密* @param src* @return*/public static String md5(String src){return DigestUtils.md5Hex(src);}/*** 获取加密的盐* @return*/public static String createSalt(){return UUID.randomUUID().toString().replace("-","");}/*** 将前端的明文密码通过MD5加密方式加密成后端服务所需密码* 注意：该步骤实际是在前端完成！！！* @param inputPass 明文密码* @return*/public static String inputPassToFormpass(String inputPass){//混淆固定盐salt,安全性更可靠String str=salt.charAt(1)+""+salt.charAt(5)+inputPass+salt.charAt(0)+""+salt.charAt(3);return md5(str);}/*** 将后端密文密码+随机salt生成数据库的密码* @param formPass* @param salt* @return*/public static String formPassToDbPass(String formPass,String salt){//混淆固定盐salt,安全性更可靠String str=salt.charAt(7)+""+salt.charAt(9)+formPass+salt.charAt(1)+""+salt.charAt(5);return md5(str);}/*** 将用户输入的密码转换成数据库的密码* @param inputPass 明文密码* @param salt      盐* @return*/public static String inputPassToDbPass(String inputPass,String salt){String formPass = inputPassToFormpass(inputPass);String dbPass = formPassToDbPass(formPass, salt);return dbPass;}public static void main(String[] args) {//d7aaa28e3b8e6c88352bd5e7c23829f9//5512a78a188b318c074a15f9b056a712String formPass = inputPassToFormpass("123456");System.out.println("前端加密密码："+formPass);String salt = createSalt();System.out.println("后端加密随机盐："+salt);String dbPass = formPassToDbPass(formPass, salt);System.out.println("后端加密密码："+dbPass);System.out.println("-------------------------------------------");String dbPass1 = inputPassToDbPass("123456", salt);System.out.println("最终加密密码："+dbPass1);}
}

MybatisPlusConfig ：

package com.ycx.spbootpro.utils;import com.baomidou.mybatisplus.extension.plugins.PaginationInterceptor;
import com.baomidou.mybatisplus.extension.plugins.pagination.optimize.JsqlParserCountOptimize;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.transaction.annotation.EnableTransactionManagement;//Spring boot方式
@EnableTransactionManagement
@Configuration
@MapperScan("com.zking.shoppingpro.service.*.mapper*")
public class MybatisPlusConfig {@Beanpublic PaginationInterceptor paginationInterceptor() {PaginationInterceptor paginationInterceptor = new PaginationInterceptor();// 设置请求的页面大于最大页后操作， true调回到首页，false 继续请求  默认false// paginationInterceptor.setOverflow(false);// 设置最大单页限制数量，默认 500 条，-1 不受限制// paginationInterceptor.setLimit(500);// 开启 count 的 join 优化,只针对部分 left joinpaginationInterceptor.setCountSqlParser(new JsqlParserCountOptimize(true));return paginationInterceptor;}
}

PageBean ： 

package com.ycx.spbootpro.utils;import javax.servlet.http.HttpServletRequest;
import java.io.Serializable;
import java.util.Map;public class PageBean implements Serializable {//页码private int page=1;//每页显示条数private int rows=10;//总记录数private int total=0;//是否分页标记private boolean pagination=true;//上一次请求的路径private String url;//请求参数Map集合private Map map;public String getUrl() {return url;}public void setUrl(String url) {this.url = url;}public Map getMap() {return map;}public void setMap(Map map) {this.map = map;}public int getPage() {return page;}public void setPage(int page) {this.page = page;}public int getRows() {return rows;}public void setRows(int rows) {this.rows = rows;}public int getTotal() {return total;}public void setTotal(int total) {this.total = total;}public boolean isPagination() {return pagination;}public void setPagination(boolean pagination) {this.pagination = pagination;}//重载setPage/setRows/setPagination方法public void setPage(String page) {if(null!=page&&!"".equals(page))this.page=Integer.parseInt(page);}public void setRows(String rows) {if(null!=rows&&!"".equals(rows))this.rows=Integer.parseInt(rows);}public void setPagination(String pagination) {if(null!=pagination&&!"".equals(pagination))this.pagination=Boolean.parseBoolean(pagination);}public void setRequest(HttpServletRequest req) {//获取前端提交的page/rows/pagination参数String page=req.getParameter("page");String rows=req.getParameter("rows");String pagination=req.getParameter("pagination");//设置属性this.setPage(page);this.setPagination(pagination);this.setRows(rows);//设置上一次请求的路径//第一次请求：//http://localhost:8080/项目名/请求路径.action?page=1//第二次请求：下一页  page=2//项目名+请求路径.action//req.getContextPath()+req.getServletPath()==req.getRequestURI()this.url=req.getRequestURI();//获取请求参数集合// checkbox name='hobby'// Map hobby==key  value==new String[]{"篮球","足球",..}this.map=req.getParameterMap();}/*** 获取分页的起始位置* @return*/public int getStartIndex() {//第1页：(1-1)*10  ==0    limit 0,10//第2页：(2-1)*10  ==10   limit 10,10//..return (this.page-1)*this.rows;}//获取末页、上一页、下一页/*** 获取末页* @return*/public int getMaxPager() {int maxPager=this.total/this.rows;if(this.total%this.rows!=0)maxPager++;return maxPager;}/*** 获取上一页* @return*/public int getPreviousPager() {int previousPager=this.page-1;if(previousPager<=1)previousPager=1;return previousPager;}/*** 获取下一页* @return*/public int getNextPager() {int nextPager=this.page+1;if(nextPager>getMaxPager())nextPager=getMaxPager();return nextPager;}@Overridepublic String toString() {return "PageBean [page=" + page + ", rows=" + rows + ", total=" + total + ", pagination=" + pagination+ ", url=" + url + ", map=" + map + "]";}}

ValidatorUtils ：

package com.ycx.spbootpro.utils;import org.apache.commons.lang3.StringUtils;import java.util.regex.Matcher;
import java.util.regex.Pattern;/*** 正则校验工具类* @author 刘开宇*/
public class ValidatorUtils {private static final Pattern mobile_pattern=Pattern.compile("[1]([0-9])[0-9]{9}$");public static boolean isMobile(String mobile){if(StringUtils.isEmpty(mobile))return false;Matcher matcher = mobile_pattern.matcher(mobile);return matcher.matches();
}
}

 在generater类运行自动生成代码：

在控制台输入表名：

生成成功：

1）创建公共跳转控制器PageController

package com.ycx.spbootpro.controller;import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;/*** @author 杨总* @create 2022-11-05 17:20*/
@Controller
public class PageController {/*** 直接跳转页面（没有层级文件夹的情况）* 列如：* http://localhost:8081/page/paint.html* http://localhost:8081/page/perfume.html** @return*/@RequestMapping("/page/{page}")public String page(@PathVariable(value = "page") String page) {return page;}/*** 直接跳转页面（存在层级文件夹的情况）** @return*/@RequestMapping("/page/{dir}/{page}")public String dir(@PathVariable(value = "dir") String dir,@PathVariable(value = "page") String page) {return dir + "/" + page;}
}

2）使用Mybatis-plus反向生成代码(Goods商品信息)

package com.ycx.spbootpro.generator;import com.baomidou.mybatisplus.core.exceptions.MybatisPlusException;
import com.baomidou.mybatisplus.core.toolkit.StringPool;
import com.baomidou.mybatisplus.core.toolkit.StringUtils;
import com.baomidou.mybatisplus.generator.AutoGenerator;
import com.baomidou.mybatisplus.generator.InjectionConfig;
import com.baomidou.mybatisplus.generator.config.*;
import com.baomidou.mybatisplus.generator.config.po.TableInfo;
import com.baomidou.mybatisplus.generator.config.rules.NamingStrategy;
import com.baomidou.mybatisplus.generator.engine.FreemarkerTemplateEngine;import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;public class CodeGenerator {/*** 
* 读取控制台内容* 
*/public static String scanner(String tip) {Scanner scanner = new Scanner(System.in);StringBuilder help = new StringBuilder();help.append("请输入" + tip + "：");System.out.println(help.toString());if (scanner.hasNext()) {String ipt = scanner.next();if (StringUtils.isNotBlank(ipt)) {return ipt;}}throw new MybatisPlusException("请输入正确的" + tip + "！");}public static void main(String[] args) {// 代码生成器AutoGenerator mpg = new AutoGenerator();// 全局配置GlobalConfig gc = new GlobalConfig();String projectPath = System.getProperty("user.dir") + "/spbootpro";gc.setOutputDir(projectPath + "/src/main/java");gc.setAuthor("yangzong");gc.setOpen(false);gc.setBaseColumnList(true);gc.setBaseResultMap(true);// gc.setSwagger2(true); 实体属性 Swagger2 注解mpg.setGlobalConfig(gc);// 数据源配置DataSourceConfig dsc = new DataSourceConfig();dsc.setUrl("jdbc:mysql://localhost:3306/spbootpro?useUnicode=true&useSSL=false&characterEncoding=utf8");// dsc.setSchemaName("public");dsc.setDriverName("com.mysql.jdbc.Driver");dsc.setUsername("root");dsc.setPassword("1234");mpg.setDataSource(dsc);// 包配置PackageConfig pc = new PackageConfig();//pc.setModuleName(scanner("模块名"));pc.setParent("com.ycx.spbootpro");//设置包名pc.setEntity("model");mpg.setPackageInfo(pc);// 自定义配置InjectionConfig cfg = new InjectionConfig() {@Overridepublic void initMap() {// to do nothing}};// 如果模板引擎是 freemarkerString templatePath = "/templates/mybatis-generator/mapper2.xml.ftl";// 如果模板引擎是 velocity// String templatePath = "/templates/mapper.xml.vm";// 自定义输出配置List focList = new ArrayList<>();// 自定义配置会被优先输出focList.add(new FileOutConfig(templatePath) {@Overridepublic String outputFile(TableInfo tableInfo) {// 自定义输出文件名 ， 如果你 Entity 设置了前后缀、此处注意 xml 的名称会跟着发生变化！！return projectPath + "/src/main/resources/mapper/" + pc.getModuleName()+ "/" + tableInfo.getEntityName() + "Mapper" + StringPool.DOT_XML;}});/*cfg.setFileCreate(new IFileCreate() {@Overridepublic boolean isCreate(ConfigBuilder configBuilder, FileType fileType, String filePath) {// 判断自定义文件夹是否需要创建checkDir("调用默认方法创建的目录，自定义目录用");if (fileType == FileType.MAPPER) {// 已经生成 mapper 文件判断存在，不想重新生成返回 falsereturn !new File(filePath).exists();}// 允许生成模板文件return true;}});*/cfg.setFileOutConfigList(focList);mpg.setCfg(cfg);// 配置模板TemplateConfig templateConfig = new TemplateConfig();// 配置自定义输出模板//指定自定义模板路径，注意不要带上.ftl/.vm, 会根据使用的模板引擎自动识别templateConfig.setMapper("templates/mybatis-generator/mapper2.java");templateConfig.setEntity("templates/mybatis-generator/entity2.java");templateConfig.setService("templates/mybatis-generator/service2.java");templateConfig.setServiceImpl("templates/mybatis-generator/serviceImpl2.java");templateConfig.setController("templates/mybatis-generator/controller2.java");templateConfig.setXml(null);mpg.setTemplate(templateConfig);// 策略配置StrategyConfig strategy = new StrategyConfig();strategy.setNaming(NamingStrategy.underline_to_camel);strategy.setColumnNaming(NamingStrategy.underline_to_camel);//strategy.setSuperEntityClass("你自己的父类实体,没有就不用设置!");strategy.setEntityLombokModel(true);strategy.setRestControllerStyle(true);strategy.setEntitySerialVersionUID(false);// 公共父类//strategy.setSuperControllerClass("你自己的父类控制器,没有就不用设置!");// 写于父类中的公共字段strategy.setSuperEntityColumns("id");strategy.setInclude(scanner("表名，多个英文逗号分割").split(","));strategy.setControllerMappingHyphenStyle(true);strategy.setTablePrefix("t_");mpg.setStrategy(strategy);mpg.setTemplateEngine(new FreemarkerTemplateEngine());mpg.execute();}
}

3）创建IndexController并定义商品查询请求处理方法

package com.ycx.spbootpro.controller;import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.ycx.spbootpro.model.Goods;
import com.ycx.spbootpro.service.IGoodsService;
import com.ycx.spbootpro.utils.DataUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;import java.util.List;
import java.util.Map;/*** @author 杨总* @create 2022-11-04 21:02*/
@Controller
public class IndexController {@Autowiredprivate IGoodsService goodsService;@RequestMapping("/")public String index(Model model){//  摆件花艺List goods01 = goodsService.list(new QueryWrapper().eq("goods_type", "01").last("limit 6"));//  壁挂北欧List goods07 = goodsService.list(new QueryWrapper().eq("goods_type", "07").last("limit 12"));//        为了方便首页数据显示，方便摆放DataUtils dataUtils = new DataUtils<>();Map> gt01 = dataUtils.transfor(3, goods01);Map> gt07 = dataUtils.transfor(4, goods07);model.addAttribute("gt01",gt01);model.addAttribute("gt07",gt07);return "index.html";}}

首页数据绑定语法:

1) list集合判空
<#if goods07?? && goods07?size gt 0>

2) 遍历map集合，获取所有的keys
<#list goods07?keys as key>

3) 根据key获取对应value值goods01[key]
<#list goods07[key] as g>

 index.html：

<#include "common/head.html" />
<#include "common/top.html" />
<#if gt01?? && gt01?size gt 0><#list gt01?keys as key>
<#list gt01[key] as g>
${g.goodsName}
￥ ${g.goodsPrice}
<#if gt07?? && gt07?size gt 0><#list gt07?keys as key>
<#list gt07[key] as g>
${g.goodsName}
￥ ${g.goodsPrice}
>
<#include "common/footer.html"/>

运行： 

四、用户明文登录

创建UserController类实现用户登录

        1.1）构建UserDto，定义mobile和password属性

        定义UserDto.java接受前台传递的参数：

package com.ycx.spbootpro.model.dto;import com.ycx.spbootpro.validator.IsMobile;
import lombok.Data;import javax.validation.constraints.NotBlank;@Data
public class UserDto {@NotBlank(message = "手机号码不能为空！")@IsMobileprivate String mobile;@NotBlank(message = "密码不能为空！")private String password;
}

        1.2）创建UserController类

处理浏览器端的请求 UserController.java

package com.ycx.spbootpro.controller;import com.ycx.spbootpro.model.dto.UserDto;
import com.ycx.spbootpro.service.IUserService;
import com.ycx.spbootpro.utils.JsonResponseBody;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RestController;import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.validation.Valid;/*** 
* 用户信息表 前端控制器* 
** @author yangzong* @since 2022-11-05*/
@RestController
@RequestMapping("/user")
public class UserController {@Autowiredprivate IUserService userService;@RequestMapping("/toLogin")public JsonResponseBody toLogin(@Valid UserDto userDto,HttpServletRequest req,HttpServletResponse resp){return userService.toLogin(userDto,req,resp);}
}

        1.3）定义userLogin(UserDto userDto,HttpServletRequest req,HttpServletResponse resp)

        1.4）定义响应封装类JsonResponseBody和JsonResponseStatus

        1.5）在IUserService中定义userLogin(UserVo userVo)，并返回JsonResponseBody

1.5.1）判断mobile和password是否为空
1.5.2）判断mobile格式是否正确
1.5.3）根据用户手机号码查询用户是否存在
1.5.4）校验账号
1.5.5）校验密码

package com.ycx.spbootpro.service.impl;import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.ycx.spbootpro.exception.BusinessException;
import com.ycx.spbootpro.model.User;
import com.ycx.spbootpro.mapper.UserMapper;
import com.ycx.spbootpro.model.dto.UserDto;
import com.ycx.spbootpro.service.IUserService;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.ycx.spbootpro.utils.JsonResponseBody;
import com.ycx.spbootpro.utils.JsonResponseStatus;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.validation.Valid;/*** 
* 用户信息表 服务实现类* 
** @author yangzong* @since 2022-11-05*/
@Service
public class UserServiceImpl extends ServiceImpl implements IUserService {@Autowiredprivate UserMapper userMapper;@Overridepublic JsonResponseBody toLogin(UserDto userDto, HttpServletRequest req, HttpServletResponse resp) {
//        1.5.1）判断mobile和password是否为空(已由JSP303完成）
//        1.5.2）判断mobile格式是否正确（自定义验证注解）
//        1.5.3）根据用户手机号码查询用户是否存在User user = userMapper.selectOne(new QueryWrapper().eq("id", userDto.getMobile()));//1.5.4）校验账号//判断用户对象是否存在if(null==user)throw new BusinessException(JsonResponseStatus.USER_USERNAME_ERROR);//        1.5.5）校验密码if(!user.getPassword().equals(userDto.getPassword()))throw new BusinessException(JsonResponseStatus.USER_PASSWORD_ERROR);return new JsonResponseBody<>();}}

        1.6）全局异常处理

1.6.1）创建BusinessException
1.6.2）创建GlobalExceptionHandler
1.6.3）修改userLogin中的异常处理方式

        1.7）自定义注解参数校验（JSR303）

1.7.1）创建自定义注解IsMobile
1.7.2）创建自定义校验规则类MobileValidator
1.7.3）在UserVo类的mobile属性中使用IsMobile注解

        自定义JSR303注解，完成服务端登录账号的验证

查看用户表数据

login.js:

$(function () {alert(2);//登录向后台发送Ajax请求$("#login").click(function () {let mobile = $("#mobile").val();let password = $("#password").val();$.post("/user/toLogin",{mobile:mobile,password:password},function (res) {alert(res.msg)},"json");})
});

测试多种情况: 

1.手机号为空

2.手机号为非法字符

3.密码为空

4.手机号不存在

5.手机号密码正确

6.密码错误

五、前端及数据库密码加密

前端加密：防止客户端浏览器F12导致密码泄露

后端加密：防止数据库数据泄露导致密码泄露

运行：

把 后端加密随机盐 和 加密密码  复制进表数据：

 再次运行，每次运行出来的密码都不一样：

记得在login.html导入：

UserServiceImpl.java变更如下

package com.ycx.spbootpro.service.impl;import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.ycx.spbootpro.exception.BusinessException;
import com.ycx.spbootpro.model.User;
import com.ycx.spbootpro.mapper.UserMapper;
import com.ycx.spbootpro.model.dto.UserDto;
import com.ycx.spbootpro.service.IUserService;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.ycx.spbootpro.utils.JsonResponseBody;
import com.ycx.spbootpro.utils.JsonResponseStatus;
import com.ycx.spbootpro.utils.MD5Utils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.validation.Valid;/*** 
* 用户信息表 服务实现类* 
** @author yangzong* @since 2022-11-05*/
@Service
public class UserServiceImpl extends ServiceImpl implements IUserService {@Autowiredprivate UserMapper userMapper;@Overridepublic JsonResponseBody toLogin(UserDto userDto, HttpServletRequest req, HttpServletResponse resp) {
//        1.5.1）判断mobile和password是否为空(已由JSP303完成）
//        1.5.2）判断mobile格式是否正确（自定义验证注解）
//        1.5.3）根据用户手机号码查询用户是否存在User user = userMapper.selectOne(new QueryWrapper().eq("id", userDto.getMobile()));//1.5.4）校验账号//判断用户对象是否存在if(null==user)throw new BusinessException(JsonResponseStatus.USER_USERNAME_ERROR);//        前台传递到后台的密码要经过工具类md5加密一次才有可能跟数据库密码匹配上String pwd = MD5Utils.formPassToDbPass(userDto.getPassword(), user.getSalt());//        1.5.5）校验密码if(!pwd.equals(user.getPassword()))throw new BusinessException(JsonResponseStatus.USER_PASSWORD_ERROR);return new JsonResponseBody<>();}}

login.js变更如下

$(function () {alert(2);//登录向后台发送Ajax请求$("#login").click(function () {let mobile = $("#mobile").val();let password = $("#password").val();//1.密码加密//1) 定义固定盐let salt='f1g2h3j4';//2) 固定盐混淆let temp=salt.charAt(1)+""+salt.charAt(5)+password+salt.charAt(0)+""+salt.charAt(3);//3) 使用MD5完成前端第一次加密let pwd=md5(temp);$.post("/user/toLogin",{mobile:mobile,password:pwd},function (res) {alert(res.msg)},"json");})
});

再次运行：

六、服务端客户端登录密码管理

将登录的用户数据分别保留在客户端以及服务端

UserServiceImpl.java变更如下

package com.ycx.spbootpro.service.impl;import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.ycx.spbootpro.exception.BusinessException;
import com.ycx.spbootpro.model.User;
import com.ycx.spbootpro.mapper.UserMapper;
import com.ycx.spbootpro.model.dto.UserDto;
import com.ycx.spbootpro.service.IRedisService;
import com.ycx.spbootpro.service.IUserService;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.ycx.spbootpro.utils.CookieUtils;
import com.ycx.spbootpro.utils.JsonResponseBody;
import com.ycx.spbootpro.utils.JsonResponseStatus;
import com.ycx.spbootpro.utils.MD5Utils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.validation.Valid;
import java.util.UUID;/*** 
* 用户信息表 服务实现类* 
** @author yangzong* @since 2022-11-05*/
@Service
public class UserServiceImpl extends ServiceImpl implements IUserService {@Autowiredprivate UserMapper userMapper;@Autowiredprivate IRedisService redisService;@Overridepublic JsonResponseBody toLogin(UserDto userDto, HttpServletRequest req, HttpServletResponse resp) {
//        1.5.1）判断mobile和password是否为空(已由JSP303完成）
//        1.5.2）判断mobile格式是否正确（自定义验证注解）
//        1.5.3）根据用户手机号码查询用户是否存在User user = userMapper.selectOne(new QueryWrapper().eq("id", userDto.getMobile()));//1.5.4）校验账号//判断用户对象是否存在if(null==user)throw new BusinessException(JsonResponseStatus.USER_USERNAME_ERROR);//        前台传递到后台的密码要经过工具类md5加密一次才有可能跟数据库密码匹配上String pwd = MD5Utils.formPassToDbPass(userDto.getPassword(), user.getSalt());//        1.5.5）校验密码if(!pwd.equals(user.getPassword()))throw new BusinessException(JsonResponseStatus.USER_PASSWORD_ERROR);//6.将登陆用户对象与token令牌进行绑定保存到cookie和redis//创建登陆令牌tokenString token= UUID.randomUUID().toString().replace("-","");//将token令牌保存到cookie中CookieUtils.setCookie(req,resp,"token",token,7200);//将登陆token令牌与用户对象user绑定到redis中redisService.setUserToRedis(token,user);//将用户登陆的昵称设置到cookie中CookieUtils.setCookie(req,resp,"nickname",user.getNickname());return new JsonResponseBody<>();}}

IRedisService.java:

package com.ycx.spbootpro.service;import com.ycx.spbootpro.model.User;/*** @author 杨总* @create 2022-11-05 20:45*/
public interface IRedisService {void setUserToRedis(String token, User user) ;User getUserByToken(String token);
}

RedisServiceImpl.java:

package com.ycx.spbootpro.service.impl;import com.ycx.spbootpro.model.User;
import com.ycx.spbootpro.service.IRedisService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Service;import java.util.concurrent.TimeUnit;/*** @author 杨总* @create 2022-11-05 20:49*/
@Service
public class RedisServiceImpl implements IRedisService {@Autowiredprivate RedisTemplate redisTemplate;@Overridepublic void setUserToRedis(String token, User user) {redisTemplate.opsForValue().set("user:"+token,user,7200L, TimeUnit.SECONDS);}@Overridepublic User getUserByToken(String token) {return (User) redisTemplate.opsForValue().get("user:"+token);}}

测试如下：

今日内容就到这里啦~再会！