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idea新建项目：java1234-vote3

pom.xml

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>2.3.2.RELEASE</version><relativePath/> <!-- lookup parent from repository --></parent><groupId>com.java1234</groupId><artifactId>java1234-vote3</artifactId><version>0.0.1-SNAPSHOT</version><name>java1234-vote3</name><description>java1234-vote3</description><properties><java.version>1.8</java.version></properties><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-validation</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-devtools</artifactId><scope>runtime</scope><optional>true</optional></dependency><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><scope>runtime</scope></dependency><!-- 连接池 --><dependency><groupId>com.alibaba</groupId><artifactId>druid</artifactId><version>1.1.10</version></dependency><!-- mybatis-plus --><dependency><groupId>com.baomidou</groupId><artifactId>mybatis-plus-boot-starter</artifactId><version>3.3.2</version></dependency><dependency><groupId>com.baomidou</groupId><artifactId>mybatis-plus-boot-starter</artifactId><version>3.3.2</version></dependency><dependency><groupId>com.alibaba</groupId><artifactId>fastjson</artifactId><version>1.2.40</version></dependency><!-- JWT --><dependency><groupId>com.auth0</groupId><artifactId>java-jwt</artifactId><version>3.2.0</version></dependency><dependency><groupId>io.jsonwebtoken</groupId><artifactId>jjwt</artifactId><version>0.9.1</version></dependency><dependency><groupId>commons-io</groupId><artifactId>commons-io</artifactId><version>2.5</version></dependency><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId><optional>true</optional></dependency><!-- spring boot redis 缓存引入 --><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-data-redis</artifactId></dependency><!-- lettuce pool 缓存连接池 --><dependency><groupId>org.apache.commons</groupId><artifactId>commons-pool2</artifactId></dependency><!-- hutool工具类--><dependency><groupId>cn.hutool</groupId><artifactId>hutool-all</artifactId><version>5.3.3</version></dependency><!-- 验证码依赖--><dependency><groupId>com.github.axet</groupId><artifactId>kaptcha</artifactId><version>0.0.9</version></dependency><!-- 添加Httpclient支持 --><dependency><groupId>org.apache.httpcomponents</groupId><artifactId>httpclient</artifactId><version>4.5.2</version></dependency></dependencies><build><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId><version>2.3.2.RELEASE</version></plugin></plugins></build></project>

application.yml

server:port: 8866servlet:context-path: /spring:datasource:type: com.alibaba.druid.pool.DruidDataSourcedriver-class-name: com.mysql.cj.jdbc.Driverurl: jdbc:mysql://localhost:3306/db_vote3?serverTimezone=Asia/Shanghaiusername: rootpassword: 123456mybatis-plus:global-config:db-config:id-type: autoconfiguration:map-underscore-to-camel-case: trueauto-mapping-behavior: fulllog-impl: org.apache.ibatis.logging.stdout.StdOutImplmapper-locations: classpath:mapper/*.xml

启动类加上，扫描mapper接口：@MapperScan("com.java1234.mapper")

项目结构；

测试接口：

/*** 测试* @return*/
@RequestMapping("/test")
public R test(){List<WxUserInfo> list = wxUserInfoService.list();HashMap<String,Object> result=new HashMap<>();result.put("list",list);return R.ok(result);
}

浏览器地址栏输入：

http://localhost:8866/user/test

测试OK

新建数据库：db_vote3

新建微信用户信息表：t_wxuserinfo

/*
SQLyog Ultimate v11.33 (64 bit)
MySQL - 5.7.18-log 
*********************************************************************
*/
/*!40101 SET NAMES utf8 */;create table `t_wxuserinfo` (`id` int (11),`openid` varchar (90),`nick_name` varchar (150),`avatar_url` varchar (600),`register_date` datetime ,`last_login_date` datetime ,`status` char (3)
); 
insert into `t_wxuserinfo` (`id`, `openid`, `nick_name`, `avatar_url`, `register_date`, `last_login_date`, `status`) values('6','o30ur5JpAsAUyGBkR0uW4IxvahR8','小锋老师@java1234','20230324082340000000882.jpeg','2023-02-27 17:48:29','2023-05-04 21:06:40','0');
insert into `t_wxuserinfo` (`id`, `openid`, `nick_name`, `avatar_url`, `register_date`, `last_login_date`, `status`) values('7','o30ur5PiPOr52bBsetXcIV93NL-U','小锋四号@java1234','20230410102248000000487.jpg','2023-04-10 10:21:30','2023-05-04 21:20:38','0');
insert into `t_wxuserinfo` (`id`, `openid`, `nick_name`, `avatar_url`, `register_date`, `last_login_date`, `status`) values('9','o30ur5JpAsAUyGBkR0uW4IxvahR0','微信用户','default.png','2023-04-30 07:42:19','2023-04-30 07:42:19','1');
insert into `t_wxuserinfo` (`id`, `openid`, `nick_name`, `avatar_url`, `register_date`, `last_login_date`, `status`) values('10','1',NULL,NULL,NULL,NULL,'1');
insert into `t_wxuserinfo` (`id`, `openid`, `nick_name`, `avatar_url`, `register_date`, `last_login_date`, `status`) values('11','2',NULL,NULL,NULL,NULL,'1');
insert into `t_wxuserinfo` (`id`, `openid`, `nick_name`, `avatar_url`, `register_date`, `last_login_date`, `status`) values('12','3',NULL,NULL,NULL,NULL,'1');
insert into `t_wxuserinfo` (`id`, `openid`, `nick_name`, `avatar_url`, `register_date`, `last_login_date`, `status`) values('13','4',NULL,NULL,NULL,NULL,'1');
insert into `t_wxuserinfo` (`id`, `openid`, `nick_name`, `avatar_url`, `register_date`, `last_login_date`, `status`) values('14','5',NULL,NULL,NULL,NULL,'1');
insert into `t_wxuserinfo` (`id`, `openid`, `nick_name`, `avatar_url`, `register_date`, `last_login_date`, `status`) values('15','6',NULL,NULL,NULL,NULL,'1');
insert into `t_wxuserinfo` (`id`, `openid`, `nick_name`, `avatar_url`, `register_date`, `last_login_date`, `status`) values('16','7',NULL,NULL,NULL,NULL,'1');
insert into `t_wxuserinfo` (`id`, `openid`, `nick_name`, `avatar_url`, `register_date`, `last_login_date`, `status`) values('17','8',NULL,NULL,NULL,NULL,'1');

（*记得要设置下主键自增）

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