/**
* 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) {
}
}