利用wxjava实现网站集成微信登录功能，核心代码竟然不超过10行[通俗易懂] -金沙1005

1. 第三方发起微信授权登录请求，微信用户允许授权第三方应用后，微信会拉起应用或重定向到第三方网站，并且带上授权临时票据code参数；
2. 通过code参数加上appid和appsecret等，通过api换取access_token；
3. 通过access_token进行接口调用，获取用户基本数据资源或帮助用户实现基本操作。

希望我今天分享的这篇文章可以帮到您。

<dependency>
    <groupid>com.github.binarywanggroupid>
    <artifactid>weixin-java-mpartifactid>
    <version>4.2.0version>
dependency>

wx:
  mp:
    useredis: true
    configs:
      - appid: xxxxxxxxxxxxx
        secret: xxxxxxxxx
        token: xxxxxxxxxxxx
        aeskey: xxxxxxxxxxx

import lombok.data;
import org.springframework.boot.context.properties.configurationproperties;
import java.util.list;
/**
 * wechat mp propertie【微信公众号】
 *
 * @author xiaoqiang
 */
@data
@configurationproperties(prefix = "wx.mp")
public class wxmpproperties {
    /**是否使用redis存储access token*/
    private boolean useredis;
    /**redis 配置*/
    private redisconfig redisconfig;
    @data
    public static class redisconfig {
        /**redis服务器 主机地址*/
        private string host;
        /**redis服务器 端口号*/
        private integer port;
    }
    /**多个公众号配置信息*/
    private list configs;
    @data
    public static class mpconfig {
        /**设置微信公众号的appid*/
        private string appid;
        /**设置微信公众号的app secret*/
        private string secret;
        /**设置微信公众号的token*/
        private string token;
        /**设置微信公众号的encodingaeskey*/
        private string aeskey;
    }
}

import lombok.allargsconstructor;
import me.chanjar.weixin.common.redis.redistemplatewxredisops;
import me.chanjar.weixin.mp.api.wxmpservice;
import me.chanjar.weixin.mp.api.impl.wxmpserviceimpl;
import me.chanjar.weixin.mp.config.impl.wxmpdefaultconfigimpl;
import me.chanjar.weixin.mp.config.impl.wxmpredisconfigimpl;
import org.springframework.beans.factory.annotation.autowired;
import org.springframework.boot.context.properties.enableconfigurationproperties;
import org.springframework.context.annotation.bean;
import org.springframework.context.annotation.configuration;
import org.springframework.data.redis.core.stringredistemplate;
import java.util.list;
import java.util.stream.collectors;
/**
 * 公众号配置
 * wechat mp configuration
 *
 * @author xiaoqiang
 */
@allargsconstructor
@configuration
@enableconfigurationproperties(wxmpproperties.class)
public class wxmpconfiguration {
    private final wxmpproperties properties;
    @autowired
    private stringredistemplate redistemplate;
    @bean
    public wxmpservice wxmpservice() {
 　　　　// 代码里 getconfigs()处报错的同学，请注意仔细阅读项目说明，你的ide需要引入lombok插件！！！！
        final list configs = this.properties.getconfigs();
        if (configs == null) {
            throw new runtimeexception("添加相关配置");
        }
        wxmpservice service = new wxmpserviceimpl();
        service.setmulticonfigstorages(configs
            .stream().map(a -> {
                wxmpdefaultconfigimpl configstorage;
                if (this.properties.isuseredis()) {
                    configstorage = new wxmpredisconfigimpl(new redistemplatewxredisops(redistemplate), a.getappid());
                } else {
                    configstorage = new wxmpdefaultconfigimpl();
                }
                configstorage.setappid(a.getappid());
                configstorage.setsecret(a.getsecret());
                configstorage.settoken(a.gettoken());
                configstorage.setaeskey(a.getaeskey());
                return configstorage;
            }).collect(collectors.tomap(wxmpdefaultconfigimpl::getappid, a -> a, (o, n) -> o)));
        return service;
    }
}

@slf4j
@controller
@requestmapping("/redirect/{appid}")
public class wxredirectcontroller {
    /**
     * 获取用户信息
     *
     */
    @requestmapping("/getuserinfo")
    public void getbase(httpservletrequest request, httpservletresponse response, @pathvariable string appid, @requestparam("code") string code) {
        wxmpservice mpservice = wxmpconfiguration.getmpservices().get(appid);
        try {
            wxmpoauth2accesstoken accesstoken = mpservice.oauth2getaccesstoken(code);
            log.info("accesstoken={}", json.tojsonstring(accesstoken));
            wxmpuser wxmpuser = mpservice.oauth2getuserinfo(accesstoken, null);
            log.info("wxmpuser={}", json.tojsonstring(wxmpuser));
        } catch (exception e) {
            log.error("获取用户信息异常！", e);
        }
    }
}

https://open.weixin.qq.com/connect/qrconnect?appid=wx12345678redirect_uri=http://www.test.com/redirect/wx12345678/getuserinfo&response_type=code&scope=snsapi_login&state=state#wechat_redirect

http://www.test.com/redirect/wx12345678/getuserinfo?code=code&state=state

[http-nio-8104-exec-2] info  c.t.m.s.c.wxredirectcontroller - accesstoken={"accesstoken":"24_vwnvrsv9vmr7qoqhjkroer93bhspg","expiresin":7200,"openid":"orxsdsuh6scakof3d1i4d3c","refreshtoken":"24_wmknxcn9ff2pl2xhlfw-ky96p6zgiqfjy8lmiop_camzohem","scope":"snsapi_login","unionid":"ojxukwffosyu1oc6of2h6pti"}
[http-nio-8104-exec-2] info  c.t.m.s.c.wxredirectcontroller - wxmpuser={"city":"","country":"","headimgurl":"https://thirdwx.qlogo.cn/mmopen/vi_32/q3auhgzwzm4ibeasuovif3qr4qxjnnwh4q1wiawcfnfzkgmzvqubponr0ha3micwsu1ltblq7phimdysc2nic6ouicq/132","language":"","nickname":"阿白","openid":"orxsdsuh6scakof3d1i4d3c","privileges":[],"province":"","sex":0,"sexdesc":"未知","unionid":"oadukwvfcpmjosyu1oc2of2h6pti"}