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
@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 "";
}
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编程网。
