feat: 新增虚拟支付订单与网盘链接检测功能

ruoyi-common/src/main/java/com/ruoyi/common/wx/VirtualPayConfig.java

@@ -0,0 +1,29 @@
+package com.ruoyi.common.wx;
+
+import lombok.Data;
+import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.stereotype.Component;
+
+/**
+ * 微信小程序虚拟支付配置。
+ */
+@Data
+@Component
+@ConfigurationProperties(prefix = "wx.miniapp.virtual-pay")
+public class VirtualPayConfig
+{
+    /** 是否启用虚拟支付。 */
+    private boolean enabled;
+
+    /** 虚拟支付 OfferId。 */
+    private String offerId;
+
+    /** 虚拟支付现网 AppKey。 */
+    private String appKey;
+
+    /** 0-正式环境，1-沙箱环境。 */
+    private int env = 0;
+
+    /** 小程序消息推送 Token，用于校验支付通知。 */
+    private String callbackToken;
+}

ruoyi-common/src/main/java/com/ruoyi/common/wx/WxCodeSession.java

@@ -0,0 +1,26 @@
+package com.ruoyi.common.wx;
+
+/**
+ * 微信 code2Session 的服务端结果。该对象禁止返回给客户端。
+ */
+public class WxCodeSession
+{
+    private final String openId;
+    private final String sessionKey;
+
+    public WxCodeSession(String openId, String sessionKey)
+    {
+        this.openId = openId;
+        this.sessionKey = sessionKey;
+    }
+
+    public String getOpenId()
+    {
+        return openId;
+    }
+
+    public String getSessionKey()
+    {
+        return sessionKey;
+    }
+}

ruoyi-common/src/main/java/com/ruoyi/common/wx/WxCodeSessionService.java

@@ -0,0 +1,81 @@
+package com.ruoyi.common.wx;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.ruoyi.common.exception.ServiceException;
+import okhttp3.HttpUrl;
+import okhttp3.OkHttpClient;
+import okhttp3.Request;
+import okhttp3.Response;
+import org.apache.commons.lang3.StringUtils;
+import org.springframework.stereotype.Service;
+
+import java.io.IOException;
+import java.util.concurrent.TimeUnit;
+
+/**
+ * 仅在服务端使用小程序临时 code 换取 OpenID 与 session_key。
+ */
+@Service
+public class WxCodeSessionService
+{
+    private static final String CODE_TO_SESSION_URL = "https://api.weixin.qq.com/sns/jscode2session";
+
+    private final WxPayConfig wxPayConfig;
+    private final ObjectMapper objectMapper;
+    private final OkHttpClient httpClient;
+
+    public WxCodeSessionService(WxPayConfig wxPayConfig, ObjectMapper objectMapper)
+    {
+        this.wxPayConfig = wxPayConfig;
+        this.objectMapper = objectMapper;
+        this.httpClient = new OkHttpClient.Builder()
+                .connectTimeout(5, TimeUnit.SECONDS)
+                .readTimeout(8, TimeUnit.SECONDS)
+                .build();
+    }
+
+    public WxCodeSession exchange(String code)
+    {
+        if (StringUtils.isBlank(code))
+        {
+            throw new ServiceException("微信登录凭证不能为空");
+        }
+        if (StringUtils.isAnyBlank(wxPayConfig.getAppid(), wxPayConfig.getSecret()))
+        {
+            throw new ServiceException("微信小程序 AppID 或 Secret 未配置");
+        }
+
+        HttpUrl url = HttpUrl.parse(CODE_TO_SESSION_URL).newBuilder()
+                .addQueryParameter("appid", wxPayConfig.getAppid())
+                .addQueryParameter("secret", wxPayConfig.getSecret())
+                .addQueryParameter("js_code", code)
+                .addQueryParameter("grant_type", "authorization_code")
+                .build();
+        Request request = new Request.Builder().url(url).get().build();
+
+        try (Response response = httpClient.newCall(request).execute())
+        {
+            if (!response.isSuccessful() || response.body() == null)
+            {
+                throw new ServiceException("微信登录服务暂不可用");
+            }
+            JsonNode result = objectMapper.readTree(response.body().string());
+            if (result.path("errcode").asInt(0) != 0)
+            {
+                throw new ServiceException("微信登录失败：" + result.path("errmsg").asText("未知错误"));
+            }
+            String openId = result.path("openid").asText();
+            String sessionKey = result.path("session_key").asText();
+            if (StringUtils.isAnyBlank(openId, sessionKey))
+            {
+                throw new ServiceException("微信登录结果不完整");
+            }
+            return new WxCodeSession(openId, sessionKey);
+        }
+        catch (IOException e)
+        {
+            throw new ServiceException("调用微信登录服务失败");
+        }
+    }
+}