修复QQ发图片会资源泄露的问题

src/main/java/com/yutou/qqbot/models/setu/GetSeTu.java

@@ -38,4 +38,22 @@ public class GetSeTu extends Model {
         }
     }
 
+    public static void main(String[] args) {
+        QQBotManager.getInstance();
+        try {
+            Thread.sleep(5000);
+        } catch (InterruptedException e) {
+            e.printStackTrace();
+        }
+        String ret = HttpTools.get("https://api.ixiaowai.cn/api/api.php?return=json");
+        JSONObject json = JSONObject.parseObject(ret);
+        HttpTools.download(json.getString("imgurl"),
+                "setu.jpg", new DownloadInterface() {
+                    @Override
+                    public void onDownload(File file) {
+                        super.onDownload(file);
+                        QQBotManager.getInstance().sendMessage(file, 583819556L, "");
+                    }
+                });
+    }
 }