Spring Boot实现微信小程序登录
使用Spring Boot完成微信小程序登录
由于微信最近的版本更新,wx.getUserInfo()的这个接口即将失效,将用wx.getUserProfile()替换,所以近期我也对自己的登录进行更新,并且为了巩固学习到的知识,我自己做了一个小demo,在此分享给大家,希望能对大家有所帮助。废话不多说,直接上代码。
前端
.wxml
<button class="r" bindtap="bindGetUserInfo">同意</button>
JS部分
bindGetUserInfo(e) { let that = this let token = wx.getStorageSync('token'); //token其实就是后台调用微信登录接口返回的openid,每个用户在同一个小程序内是唯一的。 wx.showLoading({ title: '加载中', //提示框,加载中的样式 }) if (token) { //如果已经有token,说明用户已经登录,跳转到指定页面 wx.switchTab({ url: '' }) } else { //用户还未登录,申请用户授权 wx.getUserProfile({ desc: '用于完善会员资料', // 声明获取用户个人信息后的用途,后续会展示在弹窗中,请谨慎填写 success: (res) => { that.setData({ userInfo: res.userInfo, //保存用户信息 }) if (res.errMsg == "getUserProfile:ok") { let code = null wx.login({ success: function (e) { code = e.code let params = {}; params.code = code; //用户code 注:用户的code每次登录都是随机的,所以不需要进行存储 params.avatarUrl = res.userInfo.avatarUrl; //用户头像 params.nickName = res.userInfo.nickName; //用户微信名 params.gender = res.userInfo.gender; //用户性别 0为未知,1为男,2为女 //还有有用户微信设置的地址信息,个人认为没啥用,所以没处理 wx.request({ url: '', //后台接口 data: params, method: 'POST', header: { 'Content-Type': 'application/json', 'X-Nideshop-Token': wx.getStorageSync('token') }, success: function (res) { //URL为你后台的接口 console.log(res) if (res.data.code === 200) { //存储用户信息 wx.setStorageSync('userInfo', res.data.userInfo); wx.setStorageSync('token', res.data.userInfo.openId); wx.switchTab({ url: '' //跳转到指定页面 }) wx.hideLoading() //关闭提示框 } else { //输出错误信息 } } }) } }) } else { //用户按了拒绝按钮 wx.showModal({ title: '警告通知', content: '您点击了拒绝授权,将无法正常显示个人信息,点击确定重新获取授权。', success: function (res) { //用户拒绝登录后的处理 } }); } } }) } },
前台的部分都在这了,详细的解释都写在注释里了,如果多处使用登录、或者校验用户是否登录,建议进行封装,方便调用。
后台
后台部分我使用的是springboot框架,为了方便新手学习,我会将整个模块贴在后面,包括jar包。
首先给大家看一下项目目录结构
POM.XML
jar包的内容并不复杂,我相信各位应该都没啥问题哈哈哈哈哈
<dependency> <groupId>com.alibaba</groupId> <artifactId>fastjson</artifactId> <version>1.2.47</version> </dependency> <!--数据库--> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>8.0.23</version> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> <version>2.4.4</version> </dependency> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>1.1.10</version> </dependency> <!--SpringBoot启动器--> <dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId> <version>2.1.4</version> </dependency> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>1.2.17</version> </dependency> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <version>1.16.18</version> </dependency>
配置类 application.yml
配置类的内容也不复杂,在此就不作解释啦
mybatis: type-aliases-package: com.cxb.pojo config-location: classpath:mybatis/mybatis-config.xml mapper-locations: classpath:mybatis/mapper/*.xml spring: application: name: item #数据库部分 datasource: type: com.alibaba.druid.pool.DruidDataSource driver-class-name: com.mysql.cj.jdbc.Driver url: jdbc:mysql:///item?useUnicode=treu&charactEncoding=utf-8 username: root password: 123456 wxMini: appId: #小程序的appid,在哪获取如果不知道的话可以百度哟 secret: #小程序密匙
mybatis-config.xml
<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd"> <configuration> <settings> <setting name="cacheEnabled" value="true"/> <!--开启二级缓存--> </settings> </configuration>
工具类 WeChatUtil
这个工具类是我网上找的一个比较简单的工具类,因为微信登录接口返回的参数是加密的,所以需要解密
package com.cxb.utils; import com.alibaba.fastjson.JSONObject; import lombok.extern.slf4j.Slf4j; import javax.net.ssl.HttpsURLConnection; import java.io.*; import java.net.URL; import java.net.URLConnection; import java.nio.charset.StandardCharsets; /** * 微信小程序工具类 */ @Slf4j public class WeChatUtil { public static String httpRequest(String requestUrl, String requestMethod, String output) { try { URL url = new URL(requestUrl); HttpsURLConnection connection = (HttpsURLConnection) url.openConnection(); connection.setDoOutput(true); connection.setDoInput(true); connection.setUseCaches(false); connection.setRequestMethod(requestMethod); if (null != output) { OutputStream outputStream = connection.getOutputStream(); outputStream.write(output.getBytes(StandardCharsets.UTF_8)); outputStream.close(); } // 从输入流读取返回内容 InputStream inputStream = connection.getInputStream(); InputStreamReader inputStreamReader = new InputStreamReader(inputStream, StandardCharsets.UTF_8); BufferedReader bufferedReader = new BufferedReader(inputStreamReader); String str; StringBuilder buffer = new StringBuilder(); while ((str = bufferedReader.readLine()) != null) { buffer.append(str); } bufferedReader.close(); inputStreamReader.close(); inputStream.close(); connection.disconnect(); return buffer.toString(); } catch (Exception e) { e.printStackTrace(); } return ""; } /** * 向指定 URL 发送POST方法的请求 * * @param url 发送请求的 URL * @param json 请求参数,请求参数应该是 json 的形式。 * @return 所代表远程资源的响应结果 */ public static String httpPost(String url, JSONObject json) { PrintWriter out = null; BufferedReader in = null; String result = ""; try { URL realUrl = new URL(url); // 打开和URL之间的连接 URLConnection conn = realUrl.openConnection(); // 设置通用的请求属性 conn.setRequestProperty("accept", "*/*"); conn.setRequestProperty("connection", "Keep-Alive"); conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)"); // 发送POST请求必须设置如下两行 conn.setDoOutput(true); conn.setDoInput(true); // 获取URLConnection对象对应的输出流 out = new PrintWriter(conn.getOutputStream()); // 发送请求参数 out.print(json); // flush输出流的缓冲 out.flush(); // 定义BufferedReader输入流来读取URL的响应 in = new BufferedReader( new InputStreamReader(conn.getInputStream())); String line; while ((line = in.readLine()) != null) { result=result.concat(line); } } catch (Exception e) { System.out.println("发送 POST 请求出现异常!" + e); e.printStackTrace(); } //使用finally块来关闭输出流、输入流 finally { try { if (out != null) { out.close(); } if (in != null) { in.close(); } } catch (IOException ex) { ex.printStackTrace(); } } return result; } }
接下来就是项目的主题代码了,因为只是做一个简单的demo,所以内容并不复杂,但是不管是学习还是普通的小项目都是没有问题的,可以放心使用
Dao层 UserDao
package com.cxb.dao; import com.cxb.pojo.User; import org.apache.ibatis.annotations.Mapper; import org.springframework.stereotype.Repository; @Mapper @Repository public interface UserDao { User queryById(String openId); void insertUser(User user); void updateUser(User user); }
service层 UserService
package com.cxb.service; import com.cxb.dao.UserDao; import com.cxb.pojo.User; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; @Service public class UserService implements UserDao { @Autowired private UserDao userDao; @Override public User queryById(String openId) { return userDao.queryById(openId); } @Override public void insertUser(User user) { userDao.insertUser(user); } @Override public void updateUser(User user) { userDao.updateUser(user); } }
实体类 User
package com.cxb.pojo; import lombok.AllArgsConstructor; import lombok.Data; import lombok.NoArgsConstructor; import lombok.experimental.Accessors; import java.io.Serializable; import java.util.Date; @Data @NoArgsConstructor @Accessors(chain = true) public class User implements Serializable { private Long id; //id private String code; //只是为了能接收参数,不需要存入数据库 private String openId; //微信登录接口返回的参数之一,就是token private String nickName; //微信名 private String avatarUrl; //头像 private String gender; //性别 0 未知 1 男 2 女 private Date firstLoginTime; //第一次登录时间 private Date lastLoginTime; //最后一次登录时间 }
SQL部分 UserMapper.xml
<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapepr 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd"> <mapper namespace="com.cxb.dao.UserDao"> <select id="queryById" resultType="User"> select * from user where open_id = #{openId} </select> <insert id="insertUser" parameterType="User"> insert into user ( open_id, nick_name, avatar_url, gender, first_login_time, last_login_time ) values( #{openId}, #{nickName}, #{avatarUrl}, #{gender}, #{firstLoginTime}, #{lastLoginTime} ) </insert> <update id="updateUser" parameterType="User"> update user <set> <if test="nickName != null">`nick_name` = #{nickName},</if> <if test="avatarUrl != null">`avatar_url` = #{avatarUrl},</if> <if test="gender != null">`gender` = #{gender},</if> <if test="lastLoginTime != null">`last_login_time` = #{lastLoginTime}</if> </set> where id = #{id} </update> </mapper>
控制器 UserController
package com.cxb.controller; import com.alibaba.fastjson.JSONObject; import com.cxb.pojo.User; import com.cxb.service.UserService; import com.cxb.utils.WeChatUtil; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.beans.factory.annotation.Value; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.*; import java.util.Date; @Controller @RequestMapping(value = "/user") public class UserController { @Value("${wxMini.appId}") public String appId; @Value("${wxMini.secret}") public String secret; @Autowired private UserService userService; @RequestMapping(value = "/login",method = RequestMethod.POST) @ResponseBody public JSONObject login(@RequestBody User user){ String code = user.getCode(); JSONObject object=new JSONObject(); if(code == "" || "".equals(code)){ object.put("code",300); object.put("msg","code不能为空!"); return object; } else { //微信接口服务,通过调用微信接口服务中jscode2session接口获取到openid和session_key String url = "https://api.weixin.qq.com/sns/jscode2session?appid=" + appId + "&secret=" + secret + "&js_code=" + code + "&grant_type=authorization_code"; String str = WeChatUtil.httpRequest(url, "GET", null); //调用工具类解密 JSONObject jsonObject=JSONObject.parseObject(str); String openid = (String) jsonObject.get("openid"); if(openid != null && !"".equals(openid)){ //登录成功 User userVo=new User(); userVo.setNickName(user.getNickName()); userVo.setAvatarUrl(user.getAvatarUrl()); userVo.setOpenId(openid); userVo.setGender(user.getGender()); userVo.setFirstLoginTime(new Date(System.currentTimeMillis())); userVo.setLastLoginTime(new Date(System.currentTimeMillis())); User us = userService.queryById(openid); if(us != null) { //不是首次登录,更新用户信息 userVo.setId(us.getId()); userService.updateUser(userVo); } else { //首次登录,存储用户信息 userService.insertUser(userVo); } object.put("code",200); object.put("msg","登录成功!"); object.put("userInfo",userVo); return object; }else { object.put("code",400); object.put("msg","未知错误,请重试!"); return object; } } } }
启动类 item
package com.cxb; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.context.annotation.Bean; import org.springframework.context.support.PropertySourcesPlaceholderConfigurer; @SpringBootApplication public class item { //读取配置文件信息 @Bean public static PropertySourcesPlaceholderConfigurer placeholderConfigurer() { PropertySourcesPlaceholderConfigurer c = new PropertySourcesPlaceholderConfigurer(); c.setIgnoreUnresolvablePlaceholders(true); return c; } public static void main(String[] args) { SpringApplication.run(item.class,args); } }
数据库的部分应该就不用分享了吧,相信大家根据实体类能自己建出来,好啦,至此微信小程序的登录功能就完成啦,希望能对大家有所帮助。
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持我们。
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