weixin-java-miniapp微信小程序登陆具体实现

 <dependency>
            <groupId>com.github.binarywang</groupId>
            <artifactId>weixin-java-miniapp</artifactId>
            <version>4.5.5.B</version>
</dependency>

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wx:
  miniapp:
    appId: wxcb96214be4598129  # 小程序微信公众平台appId
    secret: 039b0b4bde17b9358064fcacc56b7fc3  # 小程序微信公众平台api秘钥

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

@Component
@Data
@ConfigurationProperties(prefix = "wx.miniapp")
public class WxConfigProperties {
    private String appId;
    private String secret;
}

import cn.binarywang.wx.miniapp.api.WxMaService;
import cn.binarywang.wx.miniapp.api.impl.WxMaServiceImpl;
import cn.binarywang.wx.miniapp.config.impl.WxMaDefaultConfigImpl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.stereotype.Component;

@Component
public class WxConfigOperator {

    @Autowired
    private WxConfigProperties wxConfigProperties;

    @Bean
    public WxMaService wxMaService() {

        //微信小程序id和秘钥
        WxMaDefaultConfigImpl wxMaConfig = new WxMaDefaultConfigImpl();
        wxMaConfig.setAppid(wxConfigProperties.getAppId());
        wxMaConfig.setSecret(wxConfigProperties.getSecret());

        WxMaService service = new WxMaServiceImpl();
        service.setWxMaConfig(wxMaConfig);
        return service;
    }
}

import cn.binarywang.wx.miniapp.api.WxMaService;
import cn.binarywang.wx.miniapp.bean.WxMaJscode2SessionResult;
import lombok.extern.slf4j.Slf4j;
import me.chanjar.weixin.common.error.WxErrorException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@Slf4j
@RestController
@CrossOrigin
public class CustomerInfoController {

    @Autowired
    private WxMaService wxMaService;

    // 微信小程序登录接口
    @RequestMapping("/wx_login/[code]")
    public Object login(@PathVariable String code) throws WxErrorException {
        WxMaJscode2SessionResult sessionInfo =
                wxMaService.getUserService().getSessionInfo(code);
        //微信号标识
        System.out.println("sessionInfo.getOpenid() = " + sessionInfo.getOpenid());
        return sessionInfo;
    }
    
}

    // 登录
    wx.login({
      success: res => {
        console.error(res.code)
        // 发送 res.code 到后台换取 openId, sessionKey, unionId
        console.error(res)

         // oauth code
         const code = res.code;
      
         // 请求开发者服务器，获取oauth token信息
         wx.request({
           url: `http://localhost:8080/wx_login/$[code]`, 
           header:{'content-type':'application/json'},
           method: 'POST',
           success(res){
             const data = res.data;
             console.error(data)
           }
         })
      },
    })