Html Parser
/*
* 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><td>1-11</td><td>1-12</td><td>1-13</td>"
+ "<tr><td>1-21</td><td>1-22</td><td>1-23</td>"
+ "<tr><td>1-31</td><td>1-32</td><td>1-33</td></table>"
+ "<table id=’table2′ >"
+ "<tr><td>2-11</td><td>2-12</td><td>2-13</td>"
+ "<tr><td>2-21</td><td>2-22</td><td>2-23</td>"
+ "<tr><td>2-31</td><td>2-32</td><td>2-33</td></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];
TableColumn[] td = tr.getColumns();
for (int k = 0; k < td.length; k++) {
logger.fatal("<td>" + td[k].toPlainTextString());
}
}
}
}
} catch (ParserException e) {
e.printStackTrace();
}
}
/*
* 测试NodeVisitor的用法，遍历所有节点
*/
public void testVisitorAll() {
try {
Parser parser = new Parser();
parser.setURL("http://www.google.com");
parser.setEncoding(parser.getEncoding());
NodeVisitor visitor = new NodeVisitor() {
public void visitTag(Tag tag) {
logger.fatal("testVisitorAll() Tag name is :"
+ tag.getTagName() + " \n Class is :"
+ tag.getClass());
}
};
parser.visitAllNodesWith(visitor);
} catch (ParserException e) {
e.printStackTrace();
}
}
/*
* 测试对指定Tag的NodeVisitor的用法
*/
public void testTagVisitor() {
try {
Parser parser = new Parser(
"<head><title>dddd</title>"
+ "<link href=http://www.yeeach.com/’/test01/css.css’ text=’text/css’ rel=’stylesheet’ />"
+ "<link href=http://www.yeeach.com/’/test02/css.css’ text=’text/css’ rel=’stylesheet’ />"
+ "</head>" + "<body>"
+ "<a href=http://www.yeeach.com/’http://www.yeeach.com’>yeeach.com</a>"
+ "</body>");
NodeVisitor visitor = new NodeVisitor() {
public void visitTag(Tag tag) {
if (tag instanceof HeadTag) {
logger.fatal("visitTag() HeadTag : Tag name is :"
+ tag.getTagName() + " \n Class is :"
+ tag.getClass() + "\n Text is :"
+ tag.getText());
} else if (tag instanceof TitleTag) {
logger.fatal("visitTag() TitleTag : Tag name is :"
+ tag.getTagName() + " \n Class is :"
+ tag.getClass() + "\n Text is :"
+ tag.getText());
} else if (tag instanceof LinkTag) {
logger.fatal("visitTag() LinkTag : Tag name is :"
+ tag.getTagName() + " \n Class is :"
+ tag.getClass() + "\n Text is :"
+ tag.getText() + " \n getAttribute is :"
+ tag.getAttribute("href"));
} else {
logger.fatal("visitTag() : Tag name is :"
+ tag.getTagName() + " \n Class is :"
+ tag.getClass() + "\n Text is :"
+ tag.getText());
}
}
};
parser.visitAllNodesWith(visitor);
} catch (Exception e) {
e.printStackTrace();
}
}
/*
* 测试HtmlPage的用法
*/
public void testHtmlPage() {
String inputHTML = "<html>" + "<head>"
+ "<title>Welcome to the HTMLParser website</title>"
+ "</head>" + "<body>" + "Welcome to HTMLParser"
+ "<table id=’table1′ >"
+ "<tr><td>1-11</td><td>1-12</td><td>1-13</td>"
+ "<tr><td>1-21</td><td>1-22</td><td>1-23</td>"
+ "<tr><td>1-31</td><td>1-32</td><td>1-33</td></table>"
+ "<table id=’table2′ >"
+ "<tr><td>2-11</td><td>2-12</td><td>2-13</td>"
+ "<tr><td>2-21</td><td>2-22</td><td>2-23</td>"
+ "<tr><td>2-31</td><td>2-32</td><td>2-33</td></table>"
+ "</body>" + "</html>";
Parser parser = new Parser();
try {
parser.setInputHTML(inputHTML);
parser.setEncoding(parser.getURL());
HtmlPage page = new HtmlPage(parser);
parser.visitAllNodesWith(page);
logger.fatal("testHtmlPage -title is :" + page.getTitle());
NodeList list = page.getBody();
for (NodeIterator iterator = list.elements(); iterator
.hasMoreNodes();) {
Node node = iterator.nextNode();
logger.fatal("testHtmlPage -node is :" + node.toHtml());
}
} catch (ParserException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
/*
* 测试LinkBean的用法
*/
public void testLinkBean() {
Parser parser = new Parser();
LinkBean linkBean = new LinkBean();
linkBean.setURL("http://www.google.com");
URL[] urls = linkBean.getLinks();
for (int i = 0; i < urls.length; i++) {
URL url = urls[i];
logger.fatal("testLinkBean() -url is :" + url);
}
}
}
引用
另外一种
public class ParserTestCase extends TestCase {
private static final Logger logger = Logger.getLogger(ParserTestCase.class);
public ParserTestCase(String name) {
super(name);
}
/*
* 测试ObjectFindVisitor的用法
*/
public void testImageVisitor() {
try {
ImageTag imgLink;
ObjectFindingVisitor visitor = new ObjectFindingVisitor(ImageTag.class);
Parser parser = new Parser();
parser.setURL("http://www.google.com");
parser.setEncoding(parser.getEncoding());
parser.visitAllNodesWith(visitor);
Node[] nodes = visitor.getTags();
for (int i = 0; i < nodes.length; i++) {
imgLink = (ImageTag) nodes[i];
logger.fatal("testImageVisitor() ImageURL = "
+ imgLink.getImageURL());
logger.fatal("testImageVisitor() ImageLocation = "
+ imgLink.extractImageLocn());
logger.fatal("testImageVisitor() SRC = "
+ imgLink.getAttribute("SRC"));
}
}catch (Exception e) {
e.printStackTrace();
}
}
/*
* 测试TagNameFilter用法
*/
public void testNodeFilter() {
try {
NodeFilter filter = new TagNameFilter("IMG");
Parser parser = new Parser();
parser.setURL("http://www.google.com");
parser.setEncoding(parser.getEncoding());
NodeList list = parser.extractAllNodesThatMatch(filter);
for (int i = 0; i < list.size(); i++) {
logger.fatal("testNodeFilter() " + list.elementAt(i).toHtml());
}
} catch (Exception e) {
e.printStackTrace();
}
}
/*
* 测试NodeClassFilter用法
*/
public void testLinkTag() {
try {
NodeFilter filter = new NodeClassFilter(LinkTag.class);
Parser parser = new Parser();
parser.setURL("http://www.google.com");
parser.setEncoding(parser.getEncoding());
NodeList list = parser.extractAllNodesThatMatch(filter);
for (int i = 0; i < list.size(); i++) {
LinkTag node = (LinkTag) list.elementAt(i);
logger.fatal("testLinkTag() Link is :" + node.extractLink());
}
} catch (Exception e) {
e.printStackTrace();
}
}
/*
* 测试<link href=" text=’text/css’ rel=’stylesheet’ />用法
*/
public void testLinkCSS() {
try {
Parser parser = new Parser();
parser
.setInputHTML("<head><title>Link Test</title>"
+ "<link href=http://www.yeeach.com/’/test01/css.css’ text=’text/css’ rel=’stylesheet’ />"
+ "<link href=http://www.yeeach.com/’/test02/css.css’ text=’text/css’ rel=’stylesheet’ />"
+ "</head>" + "<body>");
parser.setEncoding(parser.getEncoding());
NodeList nodeList = null;
for (NodeIterator e = parser.elements(); e.hasMoreNodes();) {
Node node = e.nextNode();
logger.fatal("testLinkCSS()" + node.getText()+ node.getClass());
}
} catch (Exception e) {
e.printStackTrace();
}
}
/*
* 测试OrFilter的用法
*/
public void testOrFilter() {
NodeFilter inputFilter = new NodeClassFilter(InputTag.class);
NodeFilter selectFilter = new NodeClassFilter(SelectTag.class);
Parser myParser;
NodeList nodeList = null;
try {
Parser parser = new Parser();
parser
.setInputHTML("<head><title>OrFilter Test</title>"
+ "<link href=http://www.yeeach.com/’/test01/css.css’ text=’text/css’ rel=’stylesheet’ />"
+ "<link href=http://www.yeeach.com/’/test02/css.css’ text=’text/css’ rel=’stylesheet’ />"
+ "</head>"
+ "<body>"
+ "<input type=’text’ value=’text1′ name=’text1′/>"
+ "<input type=’text’ value=’text2′ name=’text2′/>"
+ "<select><option id=’1′>1</option><option id=’2′>2</option><option id=’3′></option></select>"
+ "<a href=http://www.yeeach.com/’http://www.yeeach.com’>yeeach.com</a>"
+ "</body>");
parser.setEncoding(parser.getEncoding());
OrFilter lastFilter = new OrFilter();
lastFilter.setPredicates(new NodeFilter[] { selectFilter,
inputFilter });
nodeList = parser.parse(lastFilter);
for (int i = 0; i <= nodeList.size(); i++) {
if (nodeList.elementAt(i) instanceof InputTag) {
InputTag tag = (InputTag) nodeList.elementAt(i);
logger.fatal("OrFilter tag name is :" + tag.getTagName()
+ " ,tag value is:" + tag.getAttribute("value"));
}
if (nodeList.elementAt(i) instanceof SelectTag) {
SelectTag tag = (SelectTag) nodeList.elementAt(i);
NodeList list = tag.getChildren();
for (int j = 0; j < list.size(); j++) {
OptionTag option = (OptionTag) list.elementAt(j);
logger
.fatal("OrFilter Option"
+ option.getOptionText());
}
}
}
} catch (ParserException e) {
e.printStackTrace();
}
}
}