微信配置文件
# 微信开放平台 appid wx.open.app-id=你的appid # 微信开放平台 appsecret wx.open.app-secret=你的secret # 微信开放平台 重定向url wx.open.redirect-uri=重定向url/api/user/wx/callback
配置类
package com.atguigu.yygh.user.utils;
import lombok.Data;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.PropertySource;
@Configuration
@PropertySource("classpath:wx.properties")
@ConfigurationProperties(prefix = "wx.open")
@Data
public class ConstantProperties {
private String appId;
private String appSecret;
private String redirectUri;
}
前端请求方法
//切换微信登录
weixinLogin() {
this.dialogAtrr.showLoginType = 'weixin'
user.getQRCodeParams().then((response) =>{
new WxLogin({
//true：手机单击确认后可以在iframe内跳转到redirecturl
//false ：手机单击确认登录后可以在top window 跳转到redirecturl
self_redirect: false,
id: 'weixinLogin', // 显示二维码的容器id
appid: response.data.appid,
scope: response.data.scope,
redirect_uri: response.data.redirectUri,
state: response.data.state,
style: 'black', // 提供"black"、"white"可选。二维码的样式
href: '', // 外部css文件url，需要https
})
})
},
前端api
//获得微信登录二维码的相关参数
getQRCodeParams(){
return request({
url : `/api/user/wx/getQRCodeParams`,
method : `get`
})
},
生成二维码以及回调函数
api文档：网站应用微信登录开发指南
package com.atguigu.yygh.user.controller.api;
import com.atguigu.yygh.common.exception.YyghException;
import com.atguigu.yygh.common.result.R;
import com.atguigu.yygh.common.result.ResultCode;
import com.atguigu.yygh.common.utils.JwtHelper;
import com.atguigu.yygh.model.user.UserInfo;
import com.atguigu.yygh.user.service.UserInfoService;
import com.atguigu.yygh.user.utils.ConstantProperties;
import com.atguigu.yygh.user.utils.HttpClientUtils;
import com.google.gson.Gson;
import com.sun.org.apache.regexp.internal.RE;
import io.swagger.annotations.Api;
import lombok.extern.slf4j.Slf4j;
import org.apache.http.client.utils.URLEncodedUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import sun.net.util.URLUtil;
import javax.net.ssl.HttpsURLConnection;
import javax.servlet.http.HttpSession;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.util.HashMap;
import java.util.UUID;
@Api(tags = "微信扫码登录")
@Controller //注意这里没有配置@restcontroller
@RequestMapping("/api/user/wx")
@Slf4j
public class ApiWxController {
@Autowired
private ConstantProperties constantProperties;
@Autowired
private UserInfoService userInfoService;
/**
* 方法一： 在新的页面打开显示二维码
*/
@GetMapping("/getQRCodeUrl")
public String getQRCodeUrl(HttpSession session){
try {
//处理回调url
String redirectUrl = URLEncoder.encode(constantProperties.getRedirectUri(), "UTF-8");
//处理state ：生成随机数，存入session
String state = UUID.randomUUID().toString();
log.info("生成的state = "+ state);
session.setAttribute("wx_open_state",state);
//要重定向的地址
String qrcUrl = "https://open.weixin.qq.com/connect/qrconnect" +
"?appid=" + constantProperties.getAppId() +
"&redirect_uri=" + redirectUrl +
"&response_type=code" +
"&scope=snsapi_login" +
"&state=" + state +
"#wechat_redirect";
return "redirect:" + qrcUrl;
} catch (UnsupportedEncodingException e) {
throw new YyghException(ResultCode.ERROR,"生成二维码错误");
}
}
/**
* 在内嵌窗口打开
* @param session
* @return
*/
@GetMapping("/getQRCodeParams")
@ResponseBody
public R getQRCodeParams(HttpSession session){
try {
String redirectUrl = URLEncoder.encode(constantProperties.getRedirectUri(), "UTF-8");
String state = UUID.randomUUID().toString();
log.info("生成的state ： "+ state);
session.setAttribute("wx_open_state",state);
//组装好返回给前端的数据
HashMap<String, Object> map = new HashMap<>();
map.put("appid",constantProperties.getAppId());
map.put("redirectUri",redirectUrl);
map.put("scope","snsapi_login");
map.put("state",state);
return R.ok().data(map);
} catch (UnsupportedEncodingException e) {
throw new YyghException(ResultCode.ERROR,"生成二维码错误");
}
}
/**
* 回调函数
*/
@GetMapping("/callback")
public String callback(String code, String state, HttpSession session) {
try {
String sessionState = (String)session.getAttribute("wx_open_state");
//判空操作
if(StringUtils.isEmpty(code) || StringUtils.isEmpty(state) || !state.equals(sessionState)){
throw new YyghException(ResultCode.ERROR,"回调参数错误");
}
//向微信发送请求，请求获得access_tokens
String accessTokenUrl ="https://api.weixin.qq.com/sns/oauth2/access_token" +
"?appid=" + constantProperties.getAppId() +
"&secret=" + constantProperties.getAppSecret() +
"&code=" + code +
"&grant_type=authorization_code";
//使用httpclient发送请求
String accessTokenInfo = HttpClientUtils.get(accessTokenUrl);
//将json'转换成map 获取其中的errcode键值 ，来判断相应的成功与否
Gson gson = new Gson();
HashMap<String,Object> accessTokenInfoMap = gson.fromJson(accessTokenInfo, HashMap.class);
//通过错误码是否存在来判断响应是否成功
if(accessTokenInfoMap.get("errcode") !=null ){ //errcode只要存在就说明有错误
throw new YyghException(ResultCode.ERROR,"获取access_token失败");
}
//微信获取access_token成功
String openid = (String) accessTokenInfoMap.get("openid");
String accessToken = (String) accessTokenInfoMap.get("access_token");
//根据openid判断数据库中的数据是否存在
UserInfo userInfo= userInfoService.selectWxInfoByOpenId(openid);
if(userInfo==null){
//用户不存在则进行注册操作
//向微信的资源服务器发送请求，获得当前用户的信息
String userInfoUrl ="https://api.weixin.qq.com/sns/userinfo" +
"?access_token=" + accessToken +
"&openid=" + openid;
String userInfResult = HttpClientUtils.get(userInfoUrl);
HashMap<String,Object> userInfResultMap = gson.fromJson(userInfResult, HashMap.class);
//判断响应是否失败，同上
//通过错误码是否存在来判断响应是否成功
if(accessTokenInfoMap.get("errcode") !=null ){ //errcode只要存在就说明有错误
throw new YyghException(ResultCode.ERROR,"获取用户信息失败");
}
//解析用户信息
String nickname =(String) userInfResultMap.get("nickname");
//用户注册（添加）
userInfo = new UserInfo();
userInfo.setName(nickname);
userInfo.setNickName(nickname);
userInfo.setOpenid(openid);
userInfoService.save(userInfo);
}else {
//用户存在则只需判断用户状态是否可用
if(userInfo.getStatus() == 0){
throw new YyghException(ResultCode.ERROR,"用户已被锁定");
}
}
//生成jwt字符串
String token = JwtHelper.createToken(userInfo.getId(), userInfo.getName());
//跳转到前端页面
return "redirect:http://localhost:3000/" +
"?token=" + token +
"&name=" + URLEncoder.encode(userInfo.getName(), "utf-8") +
"&openid=" + openid +
"&phone=" + userInfo.getPhone() ;
} catch (Exception e) {
throw new YyghException(ResultCode.ERROR,"微信登录失败",e);
}
}
}
标签：String,登录,微信,state,userInfo,import,com From： https://www.cnblogs.com/zhang-a-d/p/16724793.html