youhua

ruoyi-code/src/main/java/com/ruoyi/code/camera/scheduled/RtspScreenshotTask.java

@@ -7,6 +7,7 @@ import com.ruoyi.code.camera.domain.CameraBrand;
 import com.ruoyi.code.camera.service.ICameraBrandService;
 import com.ruoyi.code.camera.service.ICameraService;
 import com.ruoyi.common.config.RuoYiConfig;
+import com.ruoyi.common.utils.http.HttpUtils;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.scheduling.annotation.EnableScheduling;
@@ -43,7 +44,9 @@ public class RtspScreenshotTask {
                 file.mkdirs();
             }
             String ffmpeg = "ffmpeg -i \"rtsp://"+camera.getUsername()+":"+camera.getPassword()+"@"+camera.getIp()+cameraBrand.getRtsp()+"\" -y -f image2 -t 0.001 \""+fileName+currentTime+"\"";
-            RuntimeUtil.execForStr(ffmpeg);
+            if(HttpUtils.checkPing(camera.getIp())){
+                RuntimeUtil.execForStr(ffmpeg);
+            }
         }
     }
 }

ruoyi-common/src/main/java/com/ruoyi/common/utils/http/HttpUtils.java

@@ -11,12 +11,16 @@ import java.net.URL;
 import java.net.URLConnection;
 import java.nio.charset.StandardCharsets;
 import java.security.cert.X509Certificate;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
 import javax.net.ssl.HostnameVerifier;
 import javax.net.ssl.HttpsURLConnection;
 import javax.net.ssl.SSLContext;
 import javax.net.ssl.SSLSession;
 import javax.net.ssl.TrustManager;
 import javax.net.ssl.X509TrustManager;
+
+import cn.hutool.core.util.RuntimeUtil;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import com.ruoyi.common.constant.Constants;
@@ -271,4 +275,15 @@ public class HttpUtils
             return true;
         }
     }
+
+    private final static Pattern PATTERN= Pattern.compile("(\\d+ms)(\\s+)(TTL=\\d+)", Pattern.CASE_INSENSITIVE);
+    public static boolean checkPing(String ip) {
+        //若line含有=18ms TTL=16字样,说明已经ping通,返回true,否則返回false.
+        String result = RuntimeUtil.execForStr("ping " + ip + " -n 2 -w 2000");
+        Matcher matcher = PATTERN.matcher(result);
+        if (matcher.find()) {
+            return true;
+        }
+        return false;
+    }
 }