package org.lyh.app.actions; import org.apache.commons.io.FileUtils; import org.apache.struts.ServletActionContext; import org.lyh.app.base.BaseAction; import org.lyh.library.SiteHelpers; import org.lyh.library.VideoUtils; import java.io.File; import java.io.IOException; import java.security.KeyStore; import java.util.HashMap; import java.util.Map; /** * Created by admin on //. */ public class UploadAction extends BaseAction{ private String saveBasePath; private String imagePath; private String videoPath; private String audioPath; private String thumbnailPath; private File file; private String fileFileName; private String fileContentType; // 省略setter getter方法 public String video() { Map<String, Object> dataJson = new HashMap<String, Object>(); System.out.println(file); System.out.println(fileFileName); System.out.println(fileContentType); String fileExtend = fileFileName.substring(fileFileName.lastIndexOf(".")); String newFileName = SiteHelpers.md(fileFileName + file.getTotalSpace()); String typeDir = "normal"; String thumbnailName = null,thumbnailFile = null; boolean needThumb = false,extractOk = false; if (fileContentType.contains("video")) { typeDir = videoPath; // 提取缩量图 needThumb = true; thumbnailName = newFileName + ".jpg"; thumbnailFile = app.getRealPath(saveBasePath + thumbnailPath) + "https://www.jb51.net/" + thumbnailName; } String realPath = app.getRealPath(saveBasePath + typeDir); File saveFile = new File(realPath, newFileName + fileExtend); // 存在同名文件，跳过 if (!saveFile.exists()) { if (!saveFile.getParentFile().exists()) { saveFile.getParentFile().mkdirs(); } try { FileUtils.copyFile(file, saveFile); if(needThumb){ extractOk = VideoUtils.extractThumbnail(saveFile, thumbnailFile); System.out.println("提取缩略图成功:"+extractOk); } dataJson.put("success", true); } catch (IOException e) { System.out.println(e.getMessage()); dataJson.put("success", false); } }else{ dataJson.put("success", true); } if((Boolean)dataJson.get("success")){ dataJson.put("link", app.getContextPath() + "https://www.jb51.net/" + saveBasePath + typeDir + "https://www.jb51.net/" + newFileName + fileExtend); if(needThumb){ dataJson.put("thumbnail", app.getContextPath() + "https://www.jb51.net/" + saveBasePath + thumbnailPath + "https://www.jb51.net/" + thumbnailName); } } this.responceJson(dataJson); return NONE; } }
action配置
<action method="{}"> <param>/upload</param> <param>/images</param> <param>/video</param> <param>/audio</param> <param>/thumbnail</param> </action>
这里个人认为，如果文件的名称跟大小完全一样的话，它们是一个文件的概率就非常大了，所以我这里取文件名跟文件大小做md5运算，应该可以稍微避免下重复上传相同文件了。
转码的时候用到FFmpeg。需要的可以去这里下载。
package org.lyh.library; import java.io.File; import java.io.IOException; import java.io.InputStream; import java.util.ArrayList; import java.util.List; /** * Created by admin on //. */ public class VideoUtils { public static final String FFMPEG_EXECUTOR = "C:/Software/ffmpeg.exe"; public static final int THUMBNAIL_WIDTH = ; public static final int THUMBNAIL_HEIGHT = ; public static boolean extractThumbnail(File inputFile,String thumbnailOutput){ List<String> command = new ArrayList<String>(); File ffmpegExe = new File(FFMPEG_EXECUTOR); if(!ffmpegExe.exists()){ System.out.println("转码工具不存在"); return false; } System.out.println(ffmpegExe.getAbsolutePath()); System.out.println(inputFile.getAbsolutePath()); command.add(ffmpegExe.getAbsolutePath()); command.add("-i"); command.add(inputFile.getAbsolutePath()); command.add("-y"); command.add("-f"); command.add("image"); command.add("-ss"); command.add(""); command.add("-t"); command.add("."); command.add("-s"); command.add(THUMBNAIL_WIDTH+"*"+THUMBNAIL_HEIGHT); command.add(thumbnailOutput); ProcessBuilder builder = new ProcessBuilder(); builder.command(command); builder.redirectErrorStream(true); try { long startTime = System.currentTimeMillis(); Process process = builder.start(); System.out.println("启动耗时"+(System.currentTimeMillis()-startTime)); return true; } catch (IOException e) { e.printStackTrace(); return false; } } }