微信扫码登入
首先去通过微信开放平台做好开发者资质认证，创建网站应用然后等待审核
开发者资质认证
网站应用
审核通过的话就是这个样子 还有最底下的授权回调地址 (www.xxxxx.com) 填写域名即可
pom
<!-- WeChatQrCode --> <dependency> <groupId>com.github.binarywang</groupId> <artifactId>weixin-java-mp</artifactId> <version>3.4.0</version> </dependency> <dependency> <groupId>org.junit.jupiter</groupId> <artifactId>junit-jupiter-api</artifactId> <version>RELEASE</version> <scope>compile</scope> </dependency>
第一步 用户通过点击事件获取到微信二维码连接
/**
* 获取微信登陆二维码地址
* @return
*/
@RequestMapping(value = "/getQRCodeUrl",method = RequestMethod.POST)
public Message getQRCodeUrl() {
logger.info("获取二维码地址");
try {
String codeUrl = weChatService.getQRCodeUrl();
logger.info("codeUrl:"+codeUrl);
return new Message(ResponseEnum.SUCCESS,codeUrl);
}catch (Exception e){
logger.error(e.toString()+e);
return new Message(ResponseEnum.FALL);
}
}
@Override
public String getQRCodeUrl() {
// 生成 state 参数，用于防止 csrf
String date = DateUtil.format(new Date(), "yyyyMMdd");
String state = MD5Utils.generate(CSRF_KEY + date);
return wxMpService.buildQrConnectUrl(wxRedirectUrl,"snsapi_login", state);
}
/**
* 回调地址
* @param code
* @param state
* @return
*/
@RequestMapping(value = "/wxCallBack",method = RequestMethod.POST)
public Message wxCallBack(HttpServletRequest request, HttpServletResponse response,
@RequestParam(name = "code",defaultValue = "") String code, @RequestParam(name = "state",defaultValue = "")String state) {
if(StringUtils.isBlank(code)){
return new Message(ResponseEnum.ESSENTIAL_IS_NULL);
}
if(StringUtils.isBlank(state)){
return new Message(ResponseEnum.ESSENTIAL_IS_NULL);
}
logger.info("微信回调------------");
logger.info(code+"------"+state);
try {
Message message=weChatService.wxCallBack(request,code, state);
return message;
}catch (Exception e){
logger.error(e.toString()+"\n"+e);
return new Message(ResponseEnum.FALL);
}
}
@Override
public Message wxCallBack(HttpServletRequest request, String code, String state) {
String openId = null;
if (code != null) {
// 获取 openid
try {
WxMpOAuth2AccessToken accessToken = wxMpService.oauth2getAccessToken(code);
if (accessToken == null) {
return new Message(ResponseEnum.DATA_IS_NULL);
}
openId = accessToken.getOpenId();
log.info("openId:" + openId);
/*token = accessToken.getAccessToken();*/
WxMpUser wxUser = wxMpService.oauth2getUserInfo(accessToken, null);
log.info(wxUser.toString());
return new Message(ResponseEnum.WECHAT_NOT_BINGDING, wxUser);
} catch (WxErrorException e) {
log.error(e.getMessage(), e);
return new Message(ResponseEnum.FALL);
}
}
return new Message(ResponseEnum.FALL);
}
前端请求
$("#weiLog").click(function () {
$.ajax({
type: "POST",
url: "/api/wx/getQRCodeUrl",
dataType: 'json',
success: function (result) {
//console.log(result);
if(result.code==0){
this.itop = (window.screen.availHeight - 500) / 2;
//获得窗口的水平位置
this.ileft = (window.screen.availWidth - 400) / 2;
this.w = window.open(
result.data,
"newwindow",
"height=500, width=600, top=" +
this.itop +
", left = " +
this.ileft +
", toolbar=no, menubar=no,scrollbars=no, resizable=no,location=no, status=no"
);
}
}
});
});
