视频地址挖掘抓取
//得到视频标题public String getVideoTitle(String beginTitleStr,int beginTextNum,String endTitleStr){
int beginTitleNum =videoStr.indexOf(beginTitleStr,beginTextNum)+beginTitleStr.length();
int endTitleNum = videoStr.indexOf(endTitleStr,beginTitleNum);
String videoTitle = new ToolsSubString().mySubString(videoStr,beginTitleNum,endTitleNum);
return videoTitle;
}
//得到视频地址ID
public String getVideoId(String beginIdStr,int beginTextNum,String endIdStr){
int beginIdNum = videoStr.indexOf(beginIdStr,beginTextNum)+beginIdStr.length();
int endIdNum = videoStr.indexOf(endIdStr,beginIdNum);
String videoId = new ToolsSubString().mySubString(videoStr,beginIdNum,endIdNum);
return videoId;
}
//抓取土豆网视频信息的方法
public void catchTudouVideo(int neadCatchNum,String beginSearchVideoNumStr){
//抓取内容定位
String endSearchVideoNumStr = "</em>";
String beginTextStr = "<a class=\"inner\" target=\"new";
String beginIdStr = "href=\"http://www.tudou.com/programs/view/";
String endIdStr = "/\"";
String beginTitleStr = "title=\"";
String endTitleStr = "\"";
int beginTextNum = 0;
//得到搜索到视频个数，循环得到视频信息
int searchVideoNum = getVideoNum(neadCatchNum,beginSearchVideoNumStr, endSearchVideoNumStr);
for(int i=0;i<searchVideoNum;i++){
//内容定位
beginTextNum = videoStr.indexOf(beginTextStr,beginTextNum)+beginTextStr.length();
//得到视频信息
String videoTitle = getVideoTitle(beginTitleStr, beginTextNum, endTitleStr);
String videoId = getVideoId(beginIdStr, beginTextNum, endIdStr);
String videoUrl = "http://www.tudou.com/v/"+videoId+"/v.swf";
//创建video对象保存视频信息，并添加到video集合，为存入数据库做准备
VideoEntity video = new VideoEntity(videoTitle,"土豆网",videoUrl);
videoList.add(video);
}
}
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