/**
* 递归钻取正文信息
*
* @param nodeP
* @return
*/
@SuppressWarnings("unchecked")
protected List<Node> extractHtml(Node nodeP, String type) throws Exception {
NodeList nodeList = nodeP.getChildren();
if ((nodeList == null) || (nodeList.size() == 0)) {
return null;
}
ArrayList tableList = new ArrayList();
try {
for (NodeIterator e = nodeList.elements(); e.hasMoreNodes(); ) {
Node node = (Node) e.nextNode();
if (node instanceof LinkTag) {
tableList.add(node);
} else if (node instanceof ScriptTag
|| node instanceof StyleTag
|| node instanceof SelectTag) {
} else if (node instanceof TextNode) {
if (node.getText().length() > 0) {
tableList.add(node);
}
} else {
List tempList = extractHtml(node, type);
if ((tempList != null) && (tempList.size() > 0)) {
Iterator ti = tempList.iterator();
while (ti.hasNext()) {
tableList.add(ti.next());
}
}
}
}
} catch (Exception e) {
return null;
}
if ((tableList != null) && (tableList.size() > 0)) {
TableContext tc = new TableContext();
tc.setLinkList(new ArrayList());
tc.setTextBuffer(new StringBuffer());
tableNumber++;
tc.setTableRow(tableNumber);
Iterator ti = tableList.iterator();
// 得到设置的搜索URL
String baseUrl = Config.getSingleConfig(ConfigItem.SEARCH_BASE_URL);
while (ti.hasNext()) {
Node node = (Node) ti.next();
if (node instanceof LinkTag) {
LinkTag linkTag = (LinkTag) node;
if (!"1".equalsIgnoreCase(type)) {
linkTag.setAttribute(
"href", baseUrl + SearchHelper.encrypt(linkTag.getAttribute("href")));
}
tc.getLinkList().add(linkTag);
} else {
tc.getTextBuffer().append(node.getText());
}
}
return tableList;
}
return null;
}
/** @throws ParserException */
private void parseHtml() throws ParserException {
htmlTags = new ArrayList();
Parser parser = new Parser();
parser.setInputHTML(fDocument.get());
for (NodeIterator e = parser.elements(); e.hasMoreNodes(); ) {
Node node = e.nextNode();
VHtmlNodeVisitor htmlNodeVisitor = new VHtmlNodeVisitor();
node.accept(htmlNodeVisitor);
}
}
/** Test regular expression matching: */
public void testRegularExpression() throws Exception {
String target =
"\n"
+ "\n"
+ "Most recently, in the Western Conference final, the Flames knocked off \n"
+ "the San Jose Sharks, the Pacific Division champions, to become the first \n"
+ "Canadian team to reach the Stanley Cup Championship series since 1994.";
String html =
"<html><head><title>CBC Sports Online: NHL Playoffs</title></head>"
+ "<body><h1>CBC SPORTS ONLINE</h1>\n"
+ "The Calgary Flames have already defeated three NHL division winners \n"
+ "during their improbable playoff run. If they are to hoist the Stanley \n"
+ "Cup they'll have to go through one more. <p><table ALIGN=\"Right\" width=196 CELLPADDING=0 cellspacing=0 hspace=4> <tr><td><img src=\"/gfx/topstory/sports/iginla_j0524.jpg\" width=194 height=194 hspace=3 border=1><br>\n"
+ "\n"
+ "<font SIZE=\"1\" FACE=\"verdana,arial\">\n"
+ "Jarome Iginla skates during the Flames' practice on Monday. Calgary takes on the Tampa Bay Lightning in the Stanley Cup finals beginning Tuesday night in Tampa\n"
+ "</font></td></tr></table>\n"
+ "\n"
+ "\n"
+ "In the post-season's first round, the Flames defeated the Vancouver \n"
+ "Canucks, the Northwest Division winners, in seven tough games. <p>\n"
+ "\n"
+ "In Round 2 it was the Detroit Red Wings, who not only won the Central \n"
+ "Division, but also boasted the NHL's best overall record during the \n"
+ "regular season, who fell to the Flames. <p>"
+ target
+ "<p>\n"
+ "\n"
+ "Up next for the Flames is the Tampa Bay Lighting -- the runaway winners \n"
+ "of the NHL's Southeast Division and the Eastern Conference's best team \n"
+ "during the regular season. <p>\n"
+ "\n"
+ "The Lighting advanced by beating the Philadelphia Flyers in the Eastern \n"
+ "Conference final. <p>\n"
+ "</body></html>\n";
Lexer lexer;
Parser parser;
RegexFilter filter;
NodeIterator iterator;
int count;
lexer = new Lexer(html);
parser = new Parser(lexer);
filter =
new RegexFilter(
"(19|20)\\d\\d([- \\\\/.](0[1-9]|1[012])[- \\\\/.](0[1-9]|[12][0-9]|3[01]))?");
count = 0;
for (iterator = parser.extractAllNodesThatMatch(filter).elements(); iterator.hasMoreNodes(); ) {
assertEquals("text wrong", target, iterator.nextNode().toHtml());
count++;
}
assertEquals("wrong count", 1, count);
}
/**
* Assign the underlying node filter for this wrapper.
*
* @param filter The filter to wrap.
* @param context The parser to use for conditioning this filter. Some filters need contextual
* information to provide to the user, i.e. for tag names or attribute names or values, so the
* Parser context is provided.
*/
public void setNodeFilter(NodeFilter filter, Parser context) {
Set set;
mFilter = (TagNameFilter) filter;
set = new HashSet();
context.reset();
try {
for (NodeIterator iterator = context.elements(); iterator.hasMoreNodes(); )
addName(set, iterator.nextNode());
} catch (ParserException pe) {
// oh well, we tried
}
for (Iterator iterator = set.iterator(); iterator.hasNext(); ) mName.addItem(iterator.next());
mName.setSelectedItem(mFilter.getName());
}
public void testSelectors() throws Exception {
String html =
"<html><head><title>sample title</title></head><body inserterr=\"true\" yomama=\"false\"><h3 id=\"heading\">big </invalid>heading</h3><ul id=\"things\"><li><br word=\"broken\"/>>moocow<li><applet/>doohickey<li class=\"last\"><b class=\"item\">final<br>item</b></ul></body></html>";
Lexer l;
Parser p;
CssSelectorNodeFilter it;
NodeIterator i;
int count;
l = new Lexer(html);
p = new Parser(l);
it = new CssSelectorNodeFilter("li + li");
count = 0;
for (i = p.extractAllNodesThatMatch(it).elements(); i.hasMoreNodes(); ) {
assertEquals("tag name wrong", "LI", ((Tag) i.nextNode()).getTagName());
count++;
}
assertEquals("wrong count", 2, count);
}
@Override
public void crawl(Parser parser) throws ParserException {
List<LCOdds> data = new ArrayList<LCOdds>();
NodeList nl = parser.parse(new CssSelectorNodeFilter(ROOT));
for (NodeIterator it = nl.elements(); it.hasMoreNodes(); ) {
NodeList cells = it.nextNode().getChildren();
cells.keepAllNodesThatMatch(tdFilter);
LCOdds lc = parseRow(cells);
if (null != lc) {
data.add(lc);
}
}
// persist
if (data.size() < 1) {
log.warn(" -- [ 06_LC_2 ] data is empty !");
}
storeData("lc_odds", data);
}
/**
* 方法：获取对应的页面内容
*
* @param htmlPageContent
* @param preUrl
* @throws ParserException
* <p>Add By Ethan Lam At 2011-11-23
*/
public void fetchHtmlContent(String htmlPageContent, String preUrl) throws ParserException {
Parser parser = new Parser();
parser.setInputHTML(htmlPageContent);
NodeFilter filter =
new AndFilter(
new TagNameFilter("div"), new HasAttributeFilter("class", "blkContainerSblkCon"));
NodeList nodeList = parser.parse(filter);
NodeIterator it = nodeList.elements();
Div div = null;
StringBuffer htmlContent = new StringBuffer();
while (it.hasMoreNodes()) {
div = (Div) it.nextNode();
NodeList nl = div.getChildren();
if (nl == null) continue;
NodeIterator sub = nl.elements();
while (sub.hasMoreNodes()) {
Node t = sub.nextNode();
if (t instanceof ParagraphTag) {
// LoggerUtil.info("fetchHtmlContent:",((ParagraphTag) t).getStringText());
htmlContent.append(((ParagraphTag) t).getStringText());
}
}
}
if ("".equals(htmlContent.toString().trim())) return;
Page page = new Page();
page.setUrl(preUrl);
page.setSegment(htmlContent.toString());
LoggerUtil.info(preUrl + "获取到的页面内容:", htmlContent.toString());
pageSer.save(page);
}
/**
* 处理目标 超链接节点
*
* @param htmlPageContent
* @param preUrl
* @throws Exception
*/
public void dealLinkNodes(String htmlPageContent, String preUrl) {
try {
Parser parser = new Parser();
parser.setInputHTML(htmlPageContent);
NodeFilter filter =
new AndFilter(new TagNameFilter("a"), new HasAttributeFilter("target", "_blank"));
NodeList nodeList = parser.parse(filter);
LoggerUtil.info("ParserHandler", "爬虫得到新的节点个数：" + (nodeList != null ? nodeList.size() : 0));
NodeIterator it = nodeList.elements();
while (it.hasMoreNodes()) {
Node node = it.nextNode();
if (node instanceof LinkTag) {
if (!filterHandler.isLinkTagFilter(((LinkTag) node))) {
LoggerUtil.debug(
"ParserHandler ", ((LinkTag) node).getLink(), ((LinkTag) node).getLinkText());
CrawlQueue.getQueueManager()
.newNode(((LinkTag) node).getLinkText(), ((LinkTag) node).getLink(), preUrl);
}
}
}
} catch (Exception e) {
}
}
public ConversationID findCorrespondingHTMLFormConversation(ConversationID samlId) {
ConversationModel conversationModel = this.model.getConversationModel();
HttpUrl samlHttpUrl = conversationModel.getRequestUrl(samlId);
int samlConversationIndex = conversationModel.getIndexOfConversation(samlId);
for (int conversationIndex = samlConversationIndex - 1;
conversationIndex >= 0;
conversationIndex--) {
ConversationID id = conversationModel.getConversationAt(conversationIndex);
Response response = conversationModel.getResponse(id);
HttpUrl httpUrl = conversationModel.getRequestUrl(id);
Object parsedContent = Parser.parse(httpUrl, response);
if (null == parsedContent) {
continue;
}
if (false == parsedContent instanceof org.htmlparser.util.NodeList) {
continue;
}
org.htmlparser.util.NodeList htmlNodeList = (org.htmlparser.util.NodeList) parsedContent;
org.htmlparser.util.NodeList forms = htmlNodeList.searchFor(FormTag.class);
try {
for (NodeIterator ni = forms.elements(); ni.hasMoreNodes(); ) {
FormTag form = (FormTag) ni.nextNode();
String formAction = form.getAttribute("action");
HttpUrl formActionHttpUrl = new HttpUrl(formAction);
if (samlHttpUrl.equals(formActionHttpUrl)) {
return id;
}
}
} catch (ParserException ex) {
this._logger.log(Level.WARNING, "Looking for forms, got ''{0}''", ex);
} catch (MalformedURLException ex) {
this._logger.log(Level.WARNING, "Malformed action url: {0}", ex.getMessage());
}
}
return null;
}
