微信授权 & 扫码登录 - 快速入门（手动 & 第三方SDK）-CFANZ编程社区

手动方式

package com.imooc.controller;

import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

@RestController
@RequestMapping("/weixin")
@Slf4j
public class WeixinController {

    @GetMapping("/auth")
    public void auth(@RequestParam("code") String code) {
        log.info("进入auth方法。。。");
        log.info("code={}", code);

        String url = "https://api.weixin.qq.com/sns/oauth2/access_token?appid=wxd898fcb01713c658&secret=29d8a650db31472aa87800e3b0d739f2&code=" + code + "&grant_type=authorization_code";
        RestTemplate restTemplate = new RestTemplate();
        String response = restTemplate.getForObject(url, String.class);
        log.info("response={}", response);
    }
}

第三方SDK

<dependency>
  <groupId>com.github.binarywang</groupId>
  <artifactId>weixin-java-mp</artifactId>
  <version>2.7.0</version>
</dependency>

wechat:
  # 公众账号, 授权
  mpAppId: wxd898fcb01713c658
  mpAppSecret:

  # 开放平台,  卖家扫码登录用
  openAppId: wx6ad144e54af67d87
  openAppSecret: 91a2ff6d38a2bbccfb7e9xxxxxx

  # 支付/商户号
  mchId: 1483469312
  mchKey: 06C56A89949D617xxxxxxxxxxx
  # 发起支付不需要证书, 退款需要
  keyPath:
  notifyUrl: http://sell.natapp4.cc/sell/pay/notify
  templateId:
    orderStatus: e-Cqq67QxD6YNI41iRiqawEYdFavW_7pc7LyEMb-yeQ

projectUrl:
  wechatMpAuthorize: http://lsx888.natapp1.cc
  wechatOpenAuthorize: http://lsx888.natapp1.cc
  sell: http://lsx888.natapp1.cc

package com.imooc.config;

import lombok.Data;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;

@Data
@ConfigurationProperties(prefix = "project-url")
@Component
public class ProjectUrlConfig {

    /**
     * 微信公众平台授权url
     */
    public String wechatMpAuthorize;

    /**
     * 微信开放平台授权url
     */
    public String wechatOpenAuthorize;

    /**
     * 点餐系统
     */
    public String sell;
}

package com.imooc.config;

import lombok.Data;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;
import java.util.Map;

@Data
@Component
@ConfigurationProperties(prefix = "wechat")
public class WechatAccountConfig {

    /**
     * 公众平台id
     */
    private String mpAppId;

    /**
     * 公众平台密钥
     */
    private String mpAppSecret;

    /**
     * 开放平台id
     */
    private String openAppId;

    /**
     * 开放平台密钥
     */
    private String openAppSecret;

    /**
     * 商户号
     */
    private String mchId;

    /**
     * 商户密钥
     */
    private String mchKey;

    /**
     * 商户证书路径
     */
    private String keyPath;

    /**
     * 微信支付异步通知地址
     */
    private String notifyUrl;

    /**
     * 微信模版id
     */
    private Map<String, String> templateId;
}

package com.imooc.config;

import me.chanjar.weixin.mp.api.WxMpConfigStorage;
import me.chanjar.weixin.mp.api.WxMpInMemoryConfigStorage;
import me.chanjar.weixin.mp.api.WxMpService;
import me.chanjar.weixin.mp.api.impl.WxMpServiceImpl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.stereotype.Component;

@Component
public class WechatMpConfig {

    @Autowired
    private WechatAccountConfig accountConfig;

    @Bean
    public WxMpService wxMpService() {
        WxMpService wxMpService = new WxMpServiceImpl();
        wxMpService.setWxMpConfigStorage(wxMpConfigStorage());
        return wxMpService;
    }

    @Bean
    public WxMpConfigStorage wxMpConfigStorage() {
        WxMpInMemoryConfigStorage wxMpConfigStorage = new WxMpInMemoryConfigStorage();
        wxMpConfigStorage.setAppId(accountConfig.getMpAppId());
        wxMpConfigStorage.setSecret(accountConfig.getMpAppSecret());
        return wxMpConfigStorage;
    }
}

package com.imooc.config;

import me.chanjar.weixin.mp.api.WxMpConfigStorage;
import me.chanjar.weixin.mp.api.WxMpInMemoryConfigStorage;
import me.chanjar.weixin.mp.api.WxMpService;
import me.chanjar.weixin.mp.api.impl.WxMpServiceImpl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.stereotype.Component;

@Component
public class WechatOpenConfig {

    @Autowired
    private WechatAccountConfig accountConfig;

    @Bean
    public WxMpService wxOpenService() {
        WxMpService wxOpenService = new WxMpServiceImpl();
        wxOpenService.setWxMpConfigStorage(wxOpenConfigStorage());
        return wxOpenService;
    }

    @Bean
    public WxMpConfigStorage wxOpenConfigStorage() {
        WxMpInMemoryConfigStorage wxMpInMemoryConfigStorage = new WxMpInMemoryConfigStorage();
        wxMpInMemoryConfigStorage.setAppId(accountConfig.getOpenAppId());
        wxMpInMemoryConfigStorage.setSecret(accountConfig.getOpenAppSecret());
        return wxMpInMemoryConfigStorage;
    }
}

package com.imooc.controller;

import com.imooc.config.ProjectUrlConfig;
import com.imooc.enums.ResultEnum;
import com.imooc.exception.SellException;
import lombok.extern.slf4j.Slf4j;
import me.chanjar.weixin.common.api.WxConsts;
import me.chanjar.weixin.common.exception.WxErrorException;
import me.chanjar.weixin.mp.api.WxMpService;
import me.chanjar.weixin.mp.bean.result.WxMpOAuth2AccessToken;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import java.net.URLEncoder;

@Controller
@RequestMapping("/wechat")
@Slf4j
public class WechatController {

    @Autowired
    private WxMpService wxMpService;

    @Autowired
    private WxMpService wxOpenService;

    @Autowired
    private ProjectUrlConfig projectUrlConfig;

    @GetMapping("/authorize")
    public String authorize(@RequestParam("returnUrl") String returnUrl) {
        //1. 配置
        //2. 调用方法
        String url = projectUrlConfig.getWechatMpAuthorize() + "/sell/wechat/userInfo";
        String redirectUrl = wxMpService.oauth2buildAuthorizationUrl(url, WxConsts.OAUTH2_SCOPE_BASE, URLEncoder.encode(returnUrl));
        return "redirect:" + redirectUrl;
    }

    @GetMapping("/userInfo")
    public String userInfo(@RequestParam("code") String code,
                         @RequestParam("state") String returnUrl) {
        WxMpOAuth2AccessToken wxMpOAuth2AccessToken = new WxMpOAuth2AccessToken();
        try {
            wxMpOAuth2AccessToken = wxMpService.oauth2getAccessToken(code);
        } catch (WxErrorException e) {
            log.error("【微信网页授权】{}", e);
            throw new SellException(ResultEnum.WECHAT_MP_ERROR.getCode(), e.getError().getErrorMsg());
        }

        String openId = wxMpOAuth2AccessToken.getOpenId();

        return "redirect:" + returnUrl + "?openid=" + openId;
    }

    @GetMapping("/qrAuthorize")
    public String qrAuthorize(@RequestParam("returnUrl") String returnUrl) {
        String url = projectUrlConfig.getWechatOpenAuthorize() + "/sell/wechat/qrUserInfo";
        String redirectUrl = wxOpenService.buildQrConnectUrl(url, WxConsts.QRCONNECT_SCOPE_SNSAPI_LOGIN, URLEncoder.encode(returnUrl));
        return "redirect:" + redirectUrl;
    }

    @GetMapping("/qrUserInfo")
    public String qrUserInfo(@RequestParam("code") String code,
                             @RequestParam("state") String returnUrl) {
        WxMpOAuth2AccessToken wxMpOAuth2AccessToken = new WxMpOAuth2AccessToken();
        try {
            wxMpOAuth2AccessToken = wxOpenService.oauth2getAccessToken(code);
        } catch (WxErrorException e) {
            log.error("【微信网页授权】{}", e);
            throw new SellException(ResultEnum.WECHAT_MP_ERROR.getCode(), e.getError().getErrorMsg());
        }
        log.info("wxMpOAuth2AccessToken={}", wxMpOAuth2AccessToken);
        String openId = wxMpOAuth2AccessToken.getOpenId();

        return "redirect:" + returnUrl + "?openid=" + openId;
    }
}