网站首页如何静态化
网站是个投资类的门户, 投资潮。
首页内容较多,有四屏多吧,数据库调用也很多,虽然数据库层做了缓存,页面上也使用了oscache,但还是感觉慢,于是想到做静态化。
用quartz来定时抓取动态页面的内容,生成静态页面
首页顶部的登录,用ajax来加载
execute
public void execute() {
String url="/index.do";
String filePath=PropertyUtil.getProperty("dbcapital.root.path")+"index.html";
//创建文件
File file=new File(filePath);
try{
if(!file.exists()){
file.createNewFile();
}
}catch(IOException e){}
//生成文件
String content=UrlfileInfo.readUrlContent(url);
if(!StringUtil.isEmpty(content)){
DocUtil.writeFile(content,filePath);//写静态文件
}
}
public static String readUrlContent(String url){
StringBuffer sb=new StringBuffer();
try{
String strLine;
URL urlObj = new URL(url);
InputStream streamObj = urlObj.openStream();
InputStreamReader readerObj = new InputStreamReader(streamObj,"GBK");
BufferedReader buffObj = new BufferedReader(readerObj);
while((strLine = buffObj.readLine())!=null)
sb.append(strLine+"\r");
buffObj.close();
}catch(MalformedURLException e){
System.err.println("url error");
}catch(IOException e){
System.out.println("IO error");
}
return sb.toString();
}
public static boolean writeFile(String str,String filePath){
boolean result=true;
try{
Writer fw = new OutputStreamWriter(new FileOutputStream (filePath),"GBK");
fw.write(str);
fw.close();
}catch(IOException e){
result=false;
System.out.println("写文件失败");
}
return result;
}
ajax加载登录代码
正在载入,请稍后...
将login.jsp的状态加载到loginInfo里
theHREF = window.top.location.href.split('/');
hostHREF='';
for(i=3;i
hostHREF=hostHREF+'/'+theHREF[i];
}
setTimeout("fillData('/top_login.jsp?fromUrl="+hostHREF+"&t="+new Date()+"','loginInfo')",1000);
替换登录内容的js
function fillData(url,elementId){
http_request=false;
if(window.ActiveXObject){
try{
http_request=new ActiveXObject("MSXML2.XMLHttp");
}catch(e){
try{
http_request=new ActiveXObject("Microsoft.XMLHTTP");
}catch(e){}
}
}else if (window.XMLHttpRequest) { // Mozilla, Safari, ...
http_request = new XMLHttpRequest();
http_request.overrideMimeType('text/xml');
}
http_request.onreadystatechange = function() {
if (http_request.readyState == 4) {
if (http_request.status == 200) {
var str=http_request.responseText;
document.getElementById(elementId).innerHTML=str;
} else {
alert("服务器忙,请稍候再试!");
}
} else {
document.getElementById(elementId).innerHTML="载入中,请稍候...";
}
};
http_request.open('GET', url+"&t="+new Date(), true);
http_request.send(null);
}
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