我要获取的是该http://v.youku.com/v_show/id_XMzI5NTIyNzMy.html页面源码中的<div class="stat stat_area">内容</div>，这个DIV中的内容，可是提取为空，正则表达式应该也没错，高手进来帮个帮。
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class testtest {
public StringBuffer getContent(URL url)
{
StringBuffer contentBuffer = new StringBuffer();
try {
InputStreamReader istreamReader = new InputStreamReader(url.openStream());
int ch = 0;
//ch读取的字符，如果已到达流的末尾，则返回 -1
while ((ch = istreamReader.read()) != -1)
contentBuffer.append((char)ch);
} catch (IOException e) {
e.printStackTrace();
}
return contentBuffer;
}
public String getVideoInf(StringBuffer contentString,String patternString)
{
String temp = "";
List<String> list = new ArrayList<String>();
Pattern pattern = Pattern.compile(patternString,Pattern.CANON_EQ);
Matcher matcher = pattern.matcher(contentString);
while(matcher.find())
{
list.add(matcher.group());
}
for(int i=0;i<list.size();i++)
temp += list.get(i);
return temp;
}
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
testtest ddTesttest = new testtest();
String urlStr = "http://v.youku.com/v_show/id_XMzI5NTIyNzMy.html";
try {
StringBuffer stringBuffer = ddTesttest.getContent(new URL(urlStr));
String temp = ddTesttest.getVideoInf(stringBuffer,"<div class=\"stat stat_area\">(.*?)</div>");
System.out.println("test:\n"+temp);
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
------解决方案--------------------
- Java code
import java.io.BufferedReader;import java.io.IOException;import java.io.InputStream;import java.io.InputStreamReader;import java.net.HttpURLConnection;import java.net.MalformedURLException;import java.net.URL;import java.util.regex.Matcher;import java.util.regex.Pattern;public class Test { public String getContent(URL url) { StringBuilder builder = new StringBuilder(); try { HttpURLConnection con = (HttpURLConnection)url.openConnection(); con.connect(); InputStream iStream = con.getInputStream(); InputStreamReader isr = new InputStreamReader(iStream); BufferedReader br = new BufferedReader(isr); while(true){ String line = br.readLine(); if(line==null){ break; } if(line.length()>0){ builder.append(line.trim()); } } } catch (IOException e) { return null; } return builder.toString(); } public String getVideoInf(String content, String regex) { Pattern pattern = Pattern.compile(regex); Matcher m = pattern.matcher(content); if(!m.find()){ return null; } return m.group(1); } /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub Test test = new Test(); String urlStr = "http://v.youku.com/v_show/id_XMzI5NTIyNzMy.html"; try { String str= test.getContent(new URL(urlStr)); String regexp = "<div\\s*class=\"stat stat_area\"\\s*[^>]*>(.+?)</div>"; String tmp = test.getVideoInf(str, regexp); System.out.println(tmp); } catch (MalformedURLException e) { e.printStackTrace(); } }}