Servlet过滤器介绍之实用过滤器 - 编程入门网
作者 佚名技术
来源 NET编程
浏览
发布时间 2012-06-17
= new OutputStreamWriter(zipOut);
// Compress original output and put it into byte array.
tempOut.write(responseChars);
// Gzip streams must be explicitly closed.
tempOut.close();
// Update the Content-Length header.
res.setContentLength(byteStream.size());
// Send compressed result to client.
OutputStream realOut = res.getOutputStream();
byteStream.writeTo(realOut);
}
}
/**
* Store the FilterConfig object in case subclasses want it.
*/
public void init(FilterConfig config) throws ServletException {
this.config = config;
}
protected FilterConfig getFilterConfig() {
return (config);
}
public void destroy() {}
private boolean isGzipSupported(HttpServletRequest req) {
String browserEncodings = req.getHeader("Accept-Encoding");
return ((browserEncodings != null) && (browserEncodings.indexOf ("gzip") != -1));
}
}
Servlet过滤器介绍之实用过滤器(8)时间:2011-04-09 51cto zhangjunhdLongServlet.java
package com.zj.sample;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* Servlet with <B>long</B> output. Used to test the effect of the compression
* filter of Chapter 9.
*/
public class LongServlet extends HttpServlet {
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html");
PrintWriter out = response.getWriter();
String docType = "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0 "
+ "Transitional//EN\">\n";
String title = "Long Page";
out.println(docType + "<HTML>\n" + "<HEAD><TITLE>" + title
+ "</TITLE></HEAD>\n" + "<BODY BGCOLOR=\"#FDF5E6\">\n"
+ "<H1 ALIGN=\"CENTER\">" + title + "</H1>\n");
String line = "Blah, blah, blah, blah, blah. "
+ "Yadda, yadda, yadda, yadda.";
for (int i = 0; i < 10000; i++) {
out.println(line);
}
out.println("</BODY></HTML>");
}
}
web.xml
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