Question

求个完整的能直接运行的用java编程实现提取网页正文并输出成纯文本的程序代码.

求个完整的能直接运行的用java编程实现提取网页正文并输出成纯文本的程序代码.

Answer 1

参考下面代码

package com.test;
import org.htmlparser.Node;
import org.htmlparser.NodeFilter;
import org.htmlparser.Parser;
import org.htmlparser.filters.TagNameFilter;
import org.htmlparser.tags.TableTag;
import org.htmlparser.util.NodeList;
/**
* 标题:利用htmlparser提取网页纯文本的例子
*/
public class TestHTMLParser {
public static void testHtml() {
try {
String sCurrentLine;
String sTotalString;
sCurrentLine = "";
sTotalString = "";
java.io.InputStream l_urlStream;
java.net.URL l_url = new java.net.URL();
java.net.HttpURLConnection l_connection = (java.net.HttpURLConnection) l_url.openConnection();
l_connection.connect();
l_urlStream = l_connection.getInputStream();
java.io.BufferedReader l_reader = new java.io.BufferedReader(new java.io.InputStreamReader(l_urlStream));
while ((sCurrentLine = l_reader.readLine()) != null) {
sTotalString += sCurrentLine+"/r/n";
// System.out.println(sTotalString);
}
String testText = extractText(sTotalString);
System.out.println( testText );
} catch (Exception e) {
e.printStackTrace();
}
}

public static String extractText(String inputHtml) throws Exception {
StringBuffer text = new StringBuffer();
Parser parser = Parser.createParser(new String(inputHtml.getBytes(),"GBK"), "GBK");
// 遍历所有的节点
NodeList nodes = parser.extractAllNodesThatMatch(new NodeFilter() {
public boolean accept(Node node) {
return true;
}
});
System.out.println(nodes.size()); //打印节点的数量
for (int i=0;i<nodes.size();i++){
Node nodet = nodes.elementAt(i);
//System.out.println(nodet.getText());
text.append(new String(nodet.toPlainTextString().getBytes("GBK"))+"/r/n");
}
return text.toString();
}

public static void test5(String resource) throws Exception {
Parser myParser = new Parser(resource);
myParser.setEncoding("GBK");
String filterStr = "table";
NodeFilter filter = new TagNameFilter(filterStr);
NodeList nodeList = myParser.extractAllNodesThatMatch(filter);
TableTag tabletag = (TableTag) nodeList.elementAt(11);

}
public static void main(String[] args) throws Exception {

testHtml();
}
}