[Update] SpringCQMessageEvent 适配 getImageUrl 方法;

src/main/java/net/lamgc/cgj/bot/event/SpringCQMessageEvent.java

@@ -5,6 +5,7 @@ import net.lz1998.cq.event.message.CQGroupMessageEvent;
 import net.lz1998.cq.event.message.CQMessageEvent;
 import net.lz1998.cq.robot.CoolQ;
 
+import java.net.InetSocketAddress;
 import java.util.Objects;
 
 public class SpringCQMessageEvent extends MessageEvent {
@@ -47,6 +48,22 @@ public class SpringCQMessageEvent extends MessageEvent {
         }
     }
 
+    /**
+     * 该功能在CQ上需要CQHttp插件启用http接口调用和serve_data_files为true.
+     * 如使用本方法, 则对方需开启5700端口, 且可能会影响多机器人处理.
+     * @param imageFileName 图片文件名
+     * @return 图片下载链接
+     */
+    @Override
+    public String getImageUrl(String imageFileName) {
+        InetSocketAddress remoteAddress = cq.getBotSession().getRemoteAddress();
+        if(remoteAddress == null) {
+            throw new IllegalStateException("remoteAddress failed to get");
+        }
+        String file = cq.getImage(imageFileName).getData().getFile().replaceAll("\\\\", "/");
+        return "http://" + remoteAddress.getHostString() + ":5700/data" + file.substring(file.lastIndexOf("/data") + 5);
+    }
+
     @Override
     public Object getRawMessage() {
         return messageEvent;