H5 微信公众号 授权登录 前后端分离篇(后端02)

文章目录

• ​​1. 依赖​​
• ​​2. 方法​​

1. 依赖

<properties>
        <weixin-java.version>4.2.0</weixin-java.version>
    </properties>
    
<dependencies>
     <dependency>
            <groupId>com.github.binarywang</groupId>
            <artifactId>weixin-java-mp</artifactId>
            <version>${weixin-java.version}</version>
        </dependency>
</dependencies>

2. 方法

package com.gblfy.wx.h5.controller;

import com.gblfy.wx.h5.vo.ResponseDto;
import lombok.AllArgsConstructor;
import me.chanjar.weixin.common.bean.WxOAuth2UserInfo;
import me.chanjar.weixin.common.bean.oauth2.WxOAuth2AccessToken;
import me.chanjar.weixin.common.error.WxErrorException;
import me.chanjar.weixin.mp.api.WxMpService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

import java.io.IOException;

/**
 * 登录获取用户信息入口
 *
 * @author gblfy
 * @date 2021-12-28
 */
@RestController
@AllArgsConstructor
public class LoginController {
    private static final Logger logger = LoggerFactory.getLogger(LoginController.class);

    private final WxMpService wxMpService;

    /**
     * 获取用户信息
     * <p>
     * 1.接收前端code参数
     * 2.通过code、Appid、Secret参数获取 access_token和openid
     * 3.通过access_token和openid获取用户基本信息
     * </p>
     */
    @PostMapping("/login")
    public ResponseDto getCode(@RequestParam(value = "code", required = true) String code) throws IOException, WxErrorException {
        logger.info("接收前端code-> 【{}】", code);
        WxOAuth2AccessToken wxOAuth2AccessToken = wxMpService.getOAuth2Service().getAccessToken(code);
        logger.info("access_token-> 【{}】", wxOAuth2AccessToken.getAccessToken());
        logger.info("openid-> 【{}】", wxOAuth2AccessToken.getOpenId());

        WxOAuth2UserInfo userInfo = wxMpService.getOAuth2Service().getUserInfo(wxOAuth2AccessToken, null);
        logger.info("nickname-> 【{}】", userInfo.getNickname());
        logger.info("headimgurl-> 【{}】", userInfo.getHeadImgUrl());
        logger.info("openid-> 【{}】", userInfo.getOpenid());

        ResponseDto responseDto = new ResponseDto();
        responseDto.setContent(userInfo);
        return responseDto;
    }
}