wxid加好友生成二维码，微信号wxid转换器，可直接添加好友【仅供学习参考】

下载地址：https://www.pan38.com/share.php?code=V7rFb 提取码：8888 【仅供学习参考】
该入口类演示模块调用流程
技术要点说明
需引入ZXing依赖：

com.google.zxing
core
3.5.2

真实微信采用动态二维码机制
所有用户数据交互需通过官方API
该demo不包含实际微信通信协议
‌基础二维码生成

import com.google.zxing.*;
import com.google.zxing.client.j2se.MatrixToImageWriter;
import java.nio.file.Paths;

public class QRGenerator {
    public static void generate(String wxid) throws Exception {
        BitMatrix matrix = new MultiFormatWriter().encode(
            "weixin://contacts/profile/" + wxid,
            BarcodeFormat.QR_CODE, 300, 300);
        MatrixToImageWriter.writeToPath(
            matrix, "PNG", Paths.get("qr.png"));
    }
}

‌网络请求

```import java.net.http.*;
import java.net.URI;

public class HttpSimulator {
public static String mockWechatAPI(String wxid) {
HttpClient client = HttpClient.newHttpClient();
HttpRequest request = HttpRequest.newBuilder()
.uri(URI.create("https://api.weixin.qq.com/mock"))
.header("Content-Type", "application/json")
.POST(HttpRequest.BodyPublishers.ofString(
"{\"wxid\":\"" + wxid + "\"}"))
.build();
return client.sendAsync(request, HttpResponse.BodyHandlers.ofString())
.thenApply(HttpResponse::body).join();
}
}

主控制

```public class MainApp {
    public static void main(String[] args) {
        try {
            QRGenerator.generate("wxid_demo123");
            System.out.println(HttpSimulator.mockWechatAPI("wxid_demo123"));
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}