htmlparser实现从网页上抓取数据（收集）_JAVA

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htmlparser实现从网页上抓取数据（收集）

2011/9/29 8:03:01 yongjiucui http://cuiyj3.iteye.com 我要评论(0)

摘要：【引用】htmlparser实现从网页上抓取数据（收集）2011-04-2911:27:47|分类：java|标签：|字号大中小订阅本文引用自luoye1989《htmlparser实现从网页上抓取数据（收集）》packageparser;importjava.io.BufferedReader;importjava.io.BufferedWriter;importjava.io.FileWriter;importjava.io.IOException;importjava.io
标签：实现数据网页抓取数据

【引用】htmlparser实现从网页上抓取数据（收集）??

logsep">2011-04-29 11:27:47|??分类： java |??标签： |字号大中小?订阅

本文引用自luoye1989《htmlparser实现从网页上抓取数据（收集）》

package parser;

import java.io.BufferedReader;

import java.io.BufferedWriter;

import java.io.FileWriter;

import java.io.IOException;

import java.io.InputStream;

import java.io.InputStreamReader;

import java.net.MalformedURLException;

import java.net.URL;

/**

?* 基本能实现网页抓取，不过要手动输入URL 将整个html内容保存到指定文件

?* @author chenguoyong

?*/

public class ScrubSelectedWeb {

?????? private final static String CRLF = System.getProperty("line.separator");

?????? /**

?????? ?* @param args

?????? ?*/

?????? public static void main(String[] args) {

????????????? try {

???????????????????? URL ur = new URL("http://10.249.187.199:8083/injs100/");

???????????????????? InputStream instr = ur.openStream();

???????????????????? String s, str;

???????????????????? BufferedReader in = new BufferedReader(new InputStreamReader(instr));

???????????????????? StringBuffer sb = new StringBuffer();

???????????????????? BufferedWriter out = new BufferedWriter(new FileWriter(

?????????????????????????????????? "D:/outPut.txt"));

???????????????????? while ((s = in.readLine()) != null) {

??????????????????????????? sb.append(s + CRLF);

???????????????????? }

???????????????????? System.out.println(sb);

???????????????????? str = new String(sb);

???????????????????? out.write(str);

???????????????????? out.close();

???????????????????? in.close();

????????????? } catch (MalformedURLException e) {

???????????????????? e.printStackTrace();

????????????? } catch (IOException e) {

???????????????????? e.printStackTrace();

????????????? }

?????? }

}

基本能实现网页抓取，不过要手动输入URL，此外没有重构。只是一个简单的思路。

1.htmlparser 使用

htmlparser是一个纯的java写的html解析的库，htmlparser不依赖于其它的java库，htmlparser主要用于改造或提取html。htmlparser能超高速解析html，而且不会出错。毫不夸张地说，htmlparser就是目前最好的html解析和分析的工具。无论你是想抓取网页数据还是改造html的内容，用了htmlparser绝对会忍不住称赞。由于htmlparser 结构设计精良，所以扩展htmlparser 非常便利。

Htmlparser中文论坛.??http://bbs.hexiao.cn/thread.php?fid=6

Constructor Summary

Parser()

Parser(URLConnection?connection)
??????????Construct a parser using the provided URLConnection.

Method:

static?Parser createParser(String?html, String?charset)
??????????Creates the parser on an input string.

?void visitAllNodesWith(NodeVisitor?visitor)
??????????Apply the given visitor to the current page.

HtmlPage(Parser?parser)

?NodeList

getBody()
???????????

?TableTag[]

getTables()
???????????

?String

getTitle()
???????????

?void

setTitle(String?title)
???????????

?void

visitTag(Tag?tag)
??????????Called for each Tag visited.

Constructor Summary

NodeList()
???????????

NodeList(Node?node)
??????????Create a one element node list.

??NodeList extractAllNodesThatMatch(NodeFilter?filter)
??????????Filter the list with the given filter non-recursively. ?

NodeList extractAllNodesThatMatch(NodeFilter?filter, boolean?recursive)
??????????Filter the list with the given filter.

?Node elementAt(int?i)

?

`1. html代码里面所有的链接地址和链接名称`

?

package parser;

import org.htmlparser.Parser;

import org.htmlparser.Node;

import org.htmlparser.NodeFilter;

import org.htmlparser.Parser;

import org.htmlparser.filters.TagNameFilter;

import org.htmlparser.tags.LinkTag;

import org.htmlparser.tags.TableTag;

import org.htmlparser.util.NodeList;

import org.htmlparser.util.ParserException;

import org.htmlparser.visitors.HtmlPage;

/**

?* htmlparser取得一段html代码里面所有的链接地址和链接名称

?* @author chenguoyong

?*/

public class Testhtmlparser {

?????? /**

?????? ?* @param args

?????? ?*/

?????? public static void main(String[] args) {

????????????? String htmlcode = "<HTML><HEAD><TITLE>AAA</TITLE></HEAD><BODY>"

??????????????????????????? + "<a href='http://topic.csdn.net/u/20080522/14/0ff402ef-c382-499a-8213-ba6b2f550425.html'>连接1</a>"

??????????????????????????? + "<a href='http://topic.csdn.net'>连接2</a></BODY></HTML>";

????????????? // 创建Parser对象根据传给字符串和指定的编码

????????????? Parser parser = Parser.createParser(htmlcode, "GBK");

????????????? // 创建HtmlPage对象HtmlPage(Parser parser)

????????????? HtmlPage page = new HtmlPage(parser);

????????????? try {

???????????????????? // HtmlPage extends visitor,Apply the given visitor to the current

???????????????????? // page.

???????????????????? parser.visitAllNodesWith(page);

????????????? } catch (ParserException e1) {

???????????????????? e1 = null;

????????????? }

????????????? // 所有的节点

????????????? NodeList nodelist = page.getBody();

????????????? // 建立一个节点filter用于过滤节点

????????????? NodeFilter filter = new TagNameFilter("A");

????????????? // 得到所有过滤后，想要的节点

????????????? nodelist = nodelist.extractAllNodesThatMatch(filter, true);

????????????? for (int i = 0; i < nodelist.size(); i++) {

???????????????????? LinkTag link = (LinkTag) nodelist.elementAt(i);

???????????????????? // 链接地址

???????????????????? System.out.println(link.getAttribute("href") + "\n");

???????????????????? // 链接名称

???????????????????? System.out.println(link.getStringText());

????????????? }

?????? }

}

结果如下：

http://topic.csdn.net/u/20080522/14/0ff402ef-c382-499a-8213-ba6b2f550425.html

连接1

http://topic.csdn.net

连接2

2. 使用HtmlParser抓去网页内容

package parser;

import org.htmlparser.Parser;

import org.htmlparser.beans.StringBean;

import org.htmlparser.filters.NodeClassFilter;

import org.htmlparser.parserapplications.StringExtractor;

import org.htmlparser.tags.BodyTag;

import org.htmlparser.util.NodeList;

import org.htmlparser.util.ParserException;

/**

?* 使用HtmlParser抓去网页内容: 要抓去页面的内容最方便的方法就是使用StringBean. 里面有几个控制页面内容的几个参数.

?* 在后面的代码中会有说明. Htmlparser包中还有一个示例StringExtractor 里面有个直接得到内容的方法,

?* 其中也是使用了StringBean . 另外直接解析Parser的每个标签也可以的.

?* @author chenguoyong

?*/

public class GetContent {

?????? public void getContentUsingStringBean(String url) {

????????????? StringBean sb = new StringBean();

????????????? sb.setLinks(true); // 是否显示web页面的连接(Links)

????????????? // 为了取得页面的整洁美观一般设置上面两项为true , 如果要保持页面的原有格式, 如代码页面的空格缩进可以设置为false

????????????? sb.setCollapse(true); // 如果是true的话把一系列空白字符用一个字符替代.

????????????? sb.setReplaceNonBreakingSpaces(true);// If true regular space

????????????? sb

??????????????????????????? .setURL("http://www.blogjava.net/51AOP/archive/2006/07/19/59064.html");

????????????? System.out.println("The Content is :\n" + sb.getStrings());

?????? }

?????? public void getContentUsingStringExtractor(String url, boolean link) {

????????????? // StringExtractor内部机制和上面的一样.做了一下包装

????????????? StringExtractor se = new StringExtractor(url);

????????????? String text = null;

????????????? try {

???????????????????? text = se.extractStrings(link);

???????????????????? System.out.println("The content is :\n" + text);

????????????? } catch (ParserException e) {

???????????????????? e.printStackTrace();

????????????? }

?????? }

?????? public void getContentUsingParser(String url) {

????????????? NodeList nl;

????????????? try {

???????????????????? Parser p = new Parser(url);

???????????????????? nl = p.parse(new NodeClassFilter(BodyTag.class));

???????????????????? BodyTag bt = (BodyTag) nl.elementAt(0);

???????????????????? System.out.println(bt.toPlainTextString()); // 保留原来的内容格式. 包含js代码

????????????? } catch (ParserException e) {

???????????????????? e.printStackTrace();

????????????? }

?????? }

?????? /**

?????? ?* @param args

?????? ?*/

?????? public static void main(String[] args) {

????????????? String url = "http://www.blogjava.net/51AOP/archive/2006/07/19/59064.html";

????????????? //new GetContent().getContentUsingParser(url);

????????????? //--------------------------------------------------

????????????? new GetContent().getContentUsingStringBean(url);

?????? }

}

3.将整个html内容保存到指定文件

package parser;

import java.io.BufferedReader;

import java.io.BufferedWriter;

import java.io.FileWriter;

import java.io.IOException;

import java.io.InputStream;

import java.io.InputStreamReader;

import java.net.MalformedURLException;

import java.net.URL;

/**

?* 基本能实现网页抓取，不过要手动输入URL 将整个html内容保存到指定文件

?* @author chenguoyong

?*/

public class ScrubSelectedWeb {

?????? private final static String CRLF = System.getProperty("line.separator");

?????? /**

?????? ?* @param args

?????? ?*/

?????? public static void main(String[] args) {

????????????? try {

???????????????????? URL ur = new URL("http://www.google.cn/");

???????????????????? InputStream instr = ur.openStream();

???????????????????? String s, str;

???????????????????? BufferedReader in = new BufferedReader(new InputStreamReader(instr));

???????????????????? StringBuffer sb = new StringBuffer();

???????????????????? BufferedWriter out = new BufferedWriter(new FileWriter(

?????????????????????????????????? "D:/outPut.txt"));

???????????????????? while ((s = in.readLine()) != null) {

??????????????????????????? sb.append(s + CRLF);

???????????????????? }

???????????????????? System.out.println(sb);

???????????????????? str = new String(sb);

???????????????????? out.write(str);

???????????????????? out.close();

???????????????????? in.close();

????????????? } catch (MalformedURLException e) {

???????????????????? e.printStackTrace();

????????????? } catch (IOException e) {

???????????????????? e.printStackTrace();

????????????? }

?????? }

}

4利用htmlparser提取网页纯文本的例子

package parser;

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 TestHTMLParser2 {

?????? /**

?????? ?* 读取目标html内容

?????? ?*

?????? ?*/

?????? 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(

?????????????????????????????????? "http://10.249.187.199:8083/injs100/");

???????????????????? 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";

???????????????????? }

???????????????????? String testText = extractText(sTotalString);

????????????? } catch (Exception e) {

???????????????????? e.printStackTrace();

????????????? }

?????? }

??? /**

???? * 抽取纯文本信息

???? * @param inputHtml：html文本

???? * @return

???? * @throws Exception

???? */

?????? 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());

????????????? for (int i = 0; i < nodes.size(); i++) {

???????????????????? Node nodet = nodes.elementAt(i);

???????????????????? //字符串的代表性节点:节点的描述

???????????????????? text.append(new String(nodet.toPlainTextString().getBytes("GBK"))

?????????????????????????????????? + "\r\n");

????????????? }

????????????? return text.toString();

?????? }

??? /**

???? *? 读取文件的方式/utl 来分析内容. filePath也可以是一个Url.

???? * @param resource :文件/Url

???? * @throws Exception

???? */

?????? 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);

????????????? /*for(int i=0;i<nodeList.size();i++)

????????????? {

???????????????????? TableTag tabletag = (TableTag) nodeList.elementAt(i);

???????????????????? //标签名称

???????????????????? System.out.println(tabletag.getTagName());

???????????????????? System.out.println(tabletag.getText());

????????????? }*/

????????????? TableTag tabletag = (TableTag) nodeList.elementAt(1);

?????????????

?????? }

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

????????????? test5("http://10.249.187.199:8083/injs100/");

????????????? //testHtml();

?????? }

}

5.html解析table

package parser;

import org.apache.log4j.Logger;

import org.htmlparser.NodeFilter;

import org.htmlparser.Parser;

import org.htmlparser.filters.NodeClassFilter;

import org.htmlparser.filters.OrFilter;

import org.htmlparser.filters.TagNameFilter;

import org.htmlparser.tags.TableColumn;

import org.htmlparser.tags.TableRow;

import org.htmlparser.tags.TableTag;

import org.htmlparser.util.NodeList;

import org.htmlparser.util.ParserException;

import junit.framework.TestCase;

public class ParserTestCase extends TestCase {

?????? private static final Logger logger = Logger.getLogger(ParserTestCase.class);

?????? public ParserTestCase(String name) {

????????????? super(name);

?????? }

?????? /**

?????? ?* 测试对<table>

?????? ?* <tr>

?????? ?* <td></td>

?????? ?* </tr>

?????? ?* </table>的解析

?????? ?*/

?????? public void testTable() {

????????????? Parser myParser;

????????????? NodeList nodeList = null;

????????????? myParser = Parser

??????????????????????????? .createParser(

????????????????????????????????????????? "<body> "

??????????????????????????????????????????????????????? + "<table id=’table1′ >"

??????????????????????????????????????????????????????? + "<tr id='tro1'><td>1-11</td><td>1-12</td><td>1-13</td></tr>"

??????????????????????????????????????????????????????? + "<tr id='tro2'><td>1-21</td><td>1-22</td><td>1-23</td></tr>"

??????????????????????????????????????????????????????? + "<tr id='tro3'><td>1-31</td><td>1-32</td><td>1-33</td></tr></table>"

??????????????????????????????????????????????????????? + "<table id=’table2′ >"

??????????????????????????????????????????????????????? + "<tr id='tro4'><td>2-11</td><td>2-12</td><td>2-13</td></tr>"

??????????????????????????????????????????????????????? + "<tr id='tro5'><td>2-21</td><td>2-22</td><td>2-23</td></tr>"

??????????????????????????????????????????????????????? + "<tr id='tro6'><td>2-31</td><td>2-32</td><td>2-33</td></tr></table>"

??????????????????????????????????????????????????????? + "</body>", "GBK");

????????????? NodeFilter tableFilter = new NodeClassFilter(TableTag.class);

????????????? OrFilter lastFilter = new OrFilter();

????????????? lastFilter.setPredicates(new NodeFilter[] { tableFilter });

????????????? try {

???????????????????? nodeList = myParser.parse(lastFilter);

???????????????????? for (int i = 0; i <= nodeList.size(); i++) {

??????????????????????????? if (nodeList.elementAt(i) instanceof TableTag) {

?????????????????????????????????? TableTag tag = (TableTag) nodeList.elementAt(i);

?????????????????????????????????? TableRow[] rows = tag.getRows();

?????????????????????????????????? for (int j = 0; j < rows.length; j++) {

????????????????????????????????????????? TableRow tr = (TableRow) rows[j];

????????????????????????????????????????? System.out.println(tr.getAttribute("id"));

?????????????????????????????????? ?????? if (tr.getAttribute("id").equalsIgnoreCase("tro1")) {

???????????????????????????????????????????????? TableColumn[] td = tr.getColumns();

???????????????????????????????????????????????? for (int k = 0; k < td.length; k++) {

??????????????????????????????????????????????????????? // logger.fatal("<td>" +

??????????????????????????????????????????????????????? // td[k].toPlainTextString());

??????????????????????????????????????????????????????? System.out.println("<td>"

????????????????????????????????????????? ??????????????????????????? + td[k].toPlainTextString());

???????????????????????????????????????????????? }

????????????????????????????????????????? }

?????????????????????????????????? }

??????????????????????????? }

???????????????????? }

????????????? } catch (ParserException e) {

???????????????????? e.printStackTrace();

????????????? }

?????? }

?????? /**

?????? ?* 得到目标数据

?????? ?*

?????? ?* @param url:目标url

?????? ?* @throws Exception

?????? ?*/

?????? public static void getDatabyUrl(String url) throws Exception {

????????????? Parser myParser = new Parser(url);

????????????? NodeList nodeList = null;

????????????? myParser.setEncoding("gb2312");

????????????? NodeFilter tableFilter = new NodeClassFilter(TableTag.class);

????????????? OrFilter lastFilter = new OrFilter();

????????????? lastFilter.setPredicates(new NodeFilter[] { tableFilter });

????????????? try {

???????????????????? nodeList = myParser.parse(lastFilter);

???????????????????? // 可以从数据table的size:19-21开始到结束

???????????????????? for (int i = 15; i <= nodeList.size(); i++) {

??????????????????????????? if (nodeList.elementAt(i) instanceof TableTag) {

?????????????????????????????????? TableTag tag = (TableTag) nodeList.elementAt(i);

?????????????????????????????????? TableRow[] rows = tag.getRows();

?????????????????????????????????? for (int j = 0; j < rows.length; j++) {

????????????????????????????????????????? TableRow tr = (TableRow) rows[j];

????????????????????????????????????????? if (tr.getAttribute("id") != null

??????????????????????????????????????????????????????? && tr.getAttribute("id").equalsIgnoreCase(

????????????????????????????????????????????????????????????????????? "tr02")) {

???????????????????????????????????????????????? TableColumn[] td = tr.getColumns();

???????????????????????????????????????????????? // 对不起，没有你要查询的记录！

???????????????????????????????????????????????? if (td.length == 1) {

??????????????????????????????????????????????????????? System.out.println("对不起，没有你要查询的记录");

???????????????????????????????????????????????? } else {

??????????????????????????????????????????????????????? for (int k = 0; k < td.length; k++) {

?????????????????????????????????????????????????????????????? System.out.println("<td>内容："

???????????????????????????????????????????????????????????????????????????? + td[k].toPlainTextString().trim());

??????????????????????????????????????????????????????? }

???????????????????????????????????????????????? }

????????????????????????????????????????? }

?????????????????????????????????? }

??????????????????????????? }

???????????????????? }

????????????? } catch (ParserException e) {

???????????????????? e.printStackTrace();

????????????? }

?????? }

?????? /**

?????? ?* 测试已经得出有数据时table:22个，没有数据时table:19个

?????? ?*

?????? ?* @param args

?????? ?*/

?????? public static void main(String[] args) {

????????????? try {

???????????????????? // getDatabyUrl("http://gd.12530.com/user/querytonebytype.do?field=tonecode&condition=619505000000008942&type=1006&pkValue=619505000000008942");

????????????? ?????? getDatabyUrl("http://gd.12530.com/user/querytonebytype.do?field=tonecode&condition=619272000000001712&type=1006&pkValue=619272000000001712");

????????????? } catch (Exception e) {

???????????????????? e.printStackTrace();

????????????? }

?????? }

}

6.html解析常用

package com.jscud.test;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStreamReader;

import org.htmlparser.Node;
import org.htmlparser.NodeFilter;
import org.htmlparser.Parser;
import org.htmlparser.filters.NodeClassFilter;
import org.htmlparser.filters.OrFilter;
import org.htmlparser.nodes.TextNode;
import org.htmlparser.tags.LinkTag;
import org.htmlparser.util.NodeList;
import org.htmlparser.util.ParserException;
import org.htmlparser.visitors.HtmlPage;
import org.htmlparser.visitors.TextExtractingVisitor;

import com.jscud.util.LogMan; //一个日志记录类

/**
* 演示了Html Parse的应用.
*
* @author scud http://www.jscud.com (http://www.jscud.com/)
*/

public class ParseHtmlTest
{

public static void main(String[] args) throws Exception
{
String aFile = "e:/jscud/temp/test.htm";

String content = readTextFile(aFile, "GBK");

test1(content);
System.out.println("====================================");

test2(content);
System.out.println("====================================");

test3(content);
System.out.println("====================================");

test4(content);
System.out.println("====================================");

test5(aFile);
System.out.println("====================================");

//访问外部资源,相对慢
test5("http://www.jscud.com (http://www.jscud.com/)");
System.out.println("====================================");

}

/**
* 读取文件的方式来分析内容.
* filePath也可以是一个Url.
*
* @param resource 文件/Url
*/
public static void test5(String resource) throws Exception
{
Parser myParser = new Parser(resource);

//设置编码
myParser.setEncoding("GBK");

HtmlPage visitor = new HtmlPage(myParser);

myParser.visitAllNodesWith(visitor);

String textInPage = visitor.getTitle();

System.out.println(textInPage);
}

/**
* 按页面方式处理.对一个标准的Html页面,推荐使用此种方式.
*/
public static void test4(String content) throws Exception
{
Parser myParser;
myParser = Parser.createParser(content, "GBK");

HtmlPage visitor = new HtmlPage(myParser);

myParser.visitAllNodesWith(visitor);

String textInPage = visitor.getTitle();

System.out.println(textInPage);
}

/**
* 利用Visitor模式解析html页面.
*
* 小优点:翻译了<>等符号
* 缺点:好多空格,无法提取link
*
*/
public static void test3(String content) throws Exception
{
Parser myParser;
myParser = Parser.createParser(content, "GBK");

TextExtractingVisitor visitor = new TextExtractingVisitor();

myParser.visitAllNodesWith(visitor);

String textInPage = visitor.getExtractedText();

System.out.println(textInPage);
}

/**
* 得到普通文本和链接的内容.
*
* 使用了过滤条件.
*/
public static void test2(String content) throws ParserException
{
Parser myParser;
NodeList nodeList = null;

myParser = Parser.createParser(content, "GBK");

NodeFilter textFilter = new NodeClassFilter(TextNode.class);
NodeFilter linkFilter = new NodeClassFilter(LinkTag.class);

//暂时不处理 meta
//NodeFilter metaFilter = new NodeClassFilter(MetaTag.class);

OrFilter lastFilter = new OrFilter();
lastFilter.setPredicates(new NodeFilter[] { textFilter, linkFilter });

nodeList = myParser.parse(lastFilter);

Node[] nodes = nodeList.toNodeArray();

for (int i = 0; i < nodes.length; i++)
{
Node anode = (Node) nodes[i];

String line = "";
if (anode instanceof TextNode)
{
TextNode textnode = (TextNode) anode;
//line = textnode.toPlainTextString().trim();
line = textnode.getText();
}
else if (anode instanceof LinkTag)
{
LinkTag linknode = (LinkTag) anode;

line = linknode.getLink();
//@todo ("") 过滤jsp标签:可以自己实现这个函数
//line = StringFunc.replace(line, "<%.*%>", "");
}

if (isTrimEmpty(line))
continue;

System.out.println(line);
}
}

/**
* 解析普通文本节点.
*
* @param content
* @throws ParserException
*/
public static void test1(String content) throws ParserException
{
Parser myParser;
Node[] nodes = null;

myParser = Parser.createParser(content, null);

nodes = myParser.extractAllNodesThatAre(TextNode.class); //exception could be thrown here

for (int i = 0; i < nodes.length; i++)
{
TextNode textnode = (TextNode) nodes[i];
String line = textnode.toPlainTextString().trim();
if (line.equals(""))
continue;
System.out.println(line);
}

}

/**
* 读取一个文件到字符串里.
*
* @param sFileName 文件名
* @param sEncode String
* @return 文件内容
*/
public static String readTextFile(String sFileName, String sEncode)
{
StringBuffer sbStr = new StringBuffer();

try
{
File ff = new File(sFileName);
InputStreamReader read = new InputStreamReader(new FileInputStream(ff),
sEncode);
BufferedReader ins = new BufferedReader(read);

String dataLine = "";
while (null != (dataLine = ins.readLine()))
{
sbStr.append(dataLine);
sbStr.append("\r\n");
}

ins.close();
}
catch (Exception e)
{
LogMan.error("read Text File Error", e);
}

return sbStr.toString();
}

/**
* 去掉左右空格后字符串是否为空
* @param astr String
* @return boolean
*/
public static boolean isTrimEmpty(String astr)
{
if ((null == astr) || (astr.length() == 0))
{
return true;
}
if (isBlank(astr.trim()))
{
return true;
}
return false;
}

/**
* 字符串是否为空:null或者长度为0.
* @param astr 源字符串.
* @return boolean
*/
public static boolean isBlank(String astr)
{
if ((null == astr) || (astr.length() == 0))
{
return true;
}
else
{
return false;
}
}

}