java实现微信登录

前言

上一篇做了php的微信登录，所以也总结一下Java的微信授权登录并获取用户信息这个功能的开发流程。
配置

配置什么的就不多说了，详细的配置可以直接前往我上一篇查看。
https://www.cnblogs.com/nothavebug/p/18277732
流程实现(后端)(JAVA)(springboot)

1.首先先配置一下application.yml文件
配置一下微信小程序的Appid 和 appSecret

2.编写控制层

1. package com.xiangwu.controller.Wx;
3. import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
4. import com.xiangwu.common.exception.BaseException;
5. import com.xiangwu.common.exception.BussinessException;
6. import com.xiangwu.common.exception.MessageConstant;
7. import com.xiangwu.common.interceptor.BaseContext;
8. import com.xiangwu.common.interceptor.JwtProperties;
9. import com.xiangwu.common.jwt.JwtClaimsConstant;
10. import com.xiangwu.common.response.BaseResponse;
11. import com.xiangwu.common.utils.JwtUtil;
12. import com.xiangwu.entiry.Demand;
13. import com.xiangwu.entiry.Member;
14. import com.xiangwu.entiry.Member1;
15. import com.xiangwu.savedto.MemberDto;
16. import com.xiangwu.savedto.UserLoginDto;
17. import com.xiangwu.savedto.UserLoginVo;
18. import com.xiangwu.service.MemberService;
19. import io.swagger.annotations.Api;
20. import io.swagger.annotations.ApiOperation;
21. import lombok.extern.slf4j.Slf4j;
22. import org.springframework.beans.BeanUtils;
23. import org.springframework.beans.factory.annotation.Autowired;
24. import org.springframework.web.bind.annotation.*;
26. import java.util.Date;
27. import java.util.HashMap;
28. import java.util.List;
29. import java.util.Map;
31. /**
32. * @Author nothavebug
33. * @Date 2024/7/2 14:58
34. * @PackageName:com.yisen.controller
35. * @ClassName: MenberController
36. * @Description:
37. * @Version 1.0
38. */
39. @RestController("wxMemberController")
40. @RequestMapping("/user")
41. @Api(tags = "微信登录")
42. @Slf4j
43. public class MemberController {
44.     @Autowired
45.     private MemberService memberService;
46.     @Autowired
47.     private JwtProperties jwtProperties;
48.     //C端用户登录--微信登录
49.     @PostMapping("/user/login")
50.     @ApiOperation("登录")
51.     public BaseResponse<UserLoginVo> login(@RequestBody UserLoginDto userLoginDto) {
52.         //微信登录
53.         Member1 member = memberService.wxLogin(userLoginDto);
54.         //为微信生成jwt
55.         Map claims = new HashMap();
56.         //用户唯一标识
57.         claims.put(JwtClaimsConstant.USER_ID, member.getId());
58.         String token = JwtUtil.createJWT(jwtProperties.getUserSecretKey(), jwtProperties.getUserTtl(), claims);
59.         //其他处理
62.         return new BaseResponse<>(token);
63.     }
65. }

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3.编写Service层

1. package com.xiangwu.service;
3. import com.baomidou.mybatisplus.extension.service.IService;
4. import com.xiangwu.entiry.Member;
5. import com.xiangwu.entiry.Member1;
6. import com.xiangwu.savedto.UserLoginDto;
8. /**
9. * @Author nothavebug
10. * @Date 2024/7/2 14:58
11. * @PackageName:com.xiangwu.service
12. * @ClassName: MemberService
13. * @Description:
14. * @Version 1.0
15. */
16. public interface MemberService extends IService<Member> {
17.     //微信登录
18.     Member1 wxLogin(UserLoginDto userLoginDto);
19. }

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4.编写Impl

1. package com.xiangwu.service.impl;
4. import cn.binarywang.wx.miniapp.api.WxMaService;
5. import cn.binarywang.wx.miniapp.bean.WxMaJscode2SessionResult;
6. import cn.binarywang.wx.miniapp.bean.WxMaPhoneNumberInfo;
7. import cn.binarywang.wx.miniapp.bean.WxMaUserInfo;
8. import com.alibaba.fastjson.JSON;
9. import com.alibaba.fastjson.JSONObject;
10. import com.baomidou.mybatisplus.core.conditions.update.LambdaUpdateWrapper;
11. import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
12. import com.xiangwu.common.exception.LoginFailedException;
13. import com.xiangwu.common.interceptor.WeChatProperties;
14. import com.xiangwu.common.utils.HttpClientUtil;
15. import com.xiangwu.entiry.Demand;
16. import com.xiangwu.entiry.Member;
17. import com.xiangwu.entiry.Member1;
18. import com.xiangwu.mapper.DemandMapper;
19. import com.xiangwu.mapper.Member1Mapper;
20. import com.xiangwu.mapper.MemberMapper;
21. import com.xiangwu.savedto.UserLoginDto;
22. import com.xiangwu.service.DemandService;
23. import com.xiangwu.service.MemberService;
24. import lombok.extern.slf4j.Slf4j;
25. import me.chanjar.weixin.common.error.WxErrorException;
26. import org.springframework.beans.factory.annotation.Autowired;
27. import org.springframework.stereotype.Service;
29. import javax.security.auth.login.LoginException;
30. import java.util.Date;
31. import java.util.HashMap;
32. import java.util.Map;
34. /**
35. * @Author nothavebug
36. * @Date 2024/7/2 14:58
37. * @PackageName:com.xiangwu.service.impl
38. * @ClassName: MemberServiceImpl
39. * @Description:
40. * @Version 1.0
41. */
42. @Service
43. @Slf4j
44. public class MemberServiceImpl extends ServiceImpl<MemberMapper, Member> implements MemberService {
45.     public static final String WX_LOGIN = "https://api.weixin.qq.com/sns/jscode2session";
46.     @Autowired
47.     private WxMaService wxMaService;
48.     @Autowired
49.     private MemberMapper memberMapper;
50.     @Autowired
51.     private WeChatProperties weChatProperties;
52.     @Autowired
53.     private Member1Mapper member1Mapper;
54.     @Override
55.     public Member1 wxLogin(UserLoginDto userLoginDto) {
56.         String code = userLoginDto.getCode();
57.         try {
58.             WxMaJscode2SessionResult session = wxMaService.getUserService().getSessionInfo(code);
59.             String openid = session.getOpenid();
61.              // 调用微信 API 获取用户的手机号
62.             WxMaPhoneNumberInfo phoneInfo = wxMaService.getUserService().getPhoneNoInfo(session.getSessionKey(), userLoginDto.getEncryptedData(), userLoginDto.getIv());
63.             String phoneNumber = phoneInfo.getPhoneNumber();
64.             if (openid==null){
65.                 throw new LoginFailedException("登录失败");
66.             }
67.             Member1 member = memberMapper.getBymobile(phoneNumber);
68.             if (member ==null){
69.                 Member1 member1 = new Member1();
70.                 member1.setOpenid(openid);
71.                 member1.setAddTime(new Date());
72.                 member1.setMobile(phoneNumber);
73.                 member1.setAvatar("http://springboot.itliu.top/wx/images/20220225072654_1.jpg");
74.                 member1.setMemberType("1");
76.                 member1Mapper.insert(member1);
77.             }
78.             //  更新openid
79.             LambdaUpdateWrapper<Member1> member1LambdaUpdateWrapper = new LambdaUpdateWrapper<>();
80.             member1LambdaUpdateWrapper.set(Member1::getOpenid,openid)
81.                     .eq(Member1::getMobile,phoneNumber);
82.             member1Mapper.update(member,member1LambdaUpdateWrapper);
83.             return member;
85.         } catch (WxErrorException e) {
86.             throw new RuntimeException(e);
87.         }
90.     }
91.     private String getOpenid(String code){
92.         //请求参数封装
93.         Map map = new HashMap();
94.         map.put("appid",weChatProperties.getAppid());
95.         map.put("secret",weChatProperties.getSecret());
96.         map.put("js_code",code);
97.         map.put("grant_type","authorization_code");
98.         //调用工具类，向微信接口服务发送请求
99.         String json = HttpClientUtil.doGet(WX_LOGIN, map);
100.         log.info("微信登录返回结果：{}", json);
101.         //解析json字符串
102.         JSONObject jsonObject = JSON.parseObject(json);
103.         log.info("jsonObject: {}",jsonObject);
104.         String openid = jsonObject.getString("openid");
105.         log.info("微信用户的openid为：{}", openid);
106.         return openid;
107.     }
108. }

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流程实现(前端)(Vue)(uniapp)

前端微信登录流程实现请移步我上一篇：https://www.cnblogs.com/nothavebug/p/18277732

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