[Java知识库]Spring Boot 实现微信扫码登录（JustAuth）

整合 JustAuth 开源组件实现微信登录。

文档地址：https://justauth.wiki/oauth/wechat_open.html

1、新建一个 Spring Boot 工程

2、引入依赖

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
</dependency>

<dependency>
    <groupId>org.projectlombok</groupId>
    <artifactId>lombok</artifactId>
</dependency>

<dependency>
    <groupId>me.zhyd.oauth</groupId>
    <artifactId>JustAuth</artifactId>
    <version>1.16.3</version>
</dependency>

<dependency>
    <groupId>cn.hutool</groupId>
    <artifactId>hutool-http</artifactId>
    <version>5.7.7</version>
</dependency>

<dependency>
    <groupId>com.squareup.okhttp3</groupId>
    <artifactId>okhttp</artifactId>
    <version>4.9.1</version>
</dependency>

4、编写配置文件

application.properties

server.port=8160

5、编写启动类

6、编写 Contorller

package com.yanghui.oauth.controller;

import me.zhyd.oauth.config.AuthConfig;
import me.zhyd.oauth.model.AuthCallback;
import me.zhyd.oauth.request.AuthRequest;
import me.zhyd.oauth.request.AuthWeChatOpenRequest;
import me.zhyd.oauth.utils.AuthStateUtils;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

/**
 * 微信扫码登录
 * @ClassName RestAuthController
 * @Author YH
 * @Date 2021/9/19
 * @Version 1.0
 */
@RestController
@RequestMapping("/oauth")
public class RestAuthController {

    private String appId = "wxed9954c01bb89b47";

    private String appSecret = "a7482517235173ddb4083788de60b90e";

    /**
     * 回调地址
     */
    private String redirectUrl = "http://localhost:8160/api/ucenter/wx/callback";


    @RequestMapping("/render")
    public void renderAuth(HttpServletResponse response) throws IOException {
        AuthRequest authRequest = getAuthRequest();
        response.sendRedirect(authRequest.authorize(AuthStateUtils.createState()));
    }

    @RequestMapping("/callback")
    public Object login(AuthCallback callback) {
        AuthRequest authRequest = getAuthRequest();
        return authRequest.login(callback);
    }

    private AuthRequest getAuthRequest() {
        return new AuthWeChatOpenRequest(AuthConfig.builder()
                .clientId(appId)
                .clientSecret(appSecret)
                .redirectUri(redirectUrl)
                .build());
    }
}

7、进行测试

访问地址：http://localhost:8160/oauth/render