媒体工具类

ch-core/src/main/java/com/wwdz/ch/core/util/MediaUtil.java

+package com.wwdz.ch.core.util;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import javax.imageio.ImageIO;
+import java.awt.image.BufferedImage;
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+
+public class MediaUtil {
+
+    private static final Logger logger = LoggerFactory.getLogger(MediaUtil.class);
+
+    //截取视频第一帧图片
+    private final static String CUT_VEDIO_SUFFIX = "?vframe/jpg/offset/0";
+
+    /**
+     * 七牛截取视频第一帧
+     * @param vedioUrl
+     * @return
+     */
+    public static String getImageByCutVedio(String vedioUrl) {
+        return vedioUrl + CUT_VEDIO_SUFFIX;
+    }
+
+
+    /**
+     * 将BufferedImage转换为InputStream
+     *
+     * @param image 数据源
+     * @param type  图片格式(eg:jpg、png)
+     * @return
+     */
+    private static InputStream bufferedImageToInputStream(BufferedImage image, String type) {
+        try (ByteArrayOutputStream os = new ByteArrayOutputStream()) {
+            ImageIO.write(image, type, os);
+            return new ByteArrayInputStream(os.toByteArray());
+        } catch (IOException e) {
+            logger.error("bufferedImageToInputStream 出错,原因: {}", e);
+        }
+        return null;
+    }
+}