//下载文件
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.addHeader("content-disposition", "attachment;filename=3.jpg");
InputStream in=this.getServletContext().getResourceAsStream("/hadoop.jpg");
int len=;
byte buffer[]=new byte[];
OutputStream out=response.getOutputStream();
while((len=in.read(buffer))>){
out.write(buffer,,len);
}
}
//定时刷新
private void test4(HttpServletResponse response) throws IOException {
response.setHeader("refresh", "");
String data="aaaa123rws";
response.getOutputStream().write(data.getBytes());
}
//通过content-type头，通知浏览器以何种方式解析文件
public void test3(HttpServletResponse response) throws IOException {
response.addHeader("content-type", "image/jpeg");
InputStream in=this.getServletContext().getResourceAsStream("/hadoop.jpg");
int len=;
byte buffer[]=new byte[];
OutputStream out=response.getOutputStream();
while((len=in.read(buffer))>){
out.write(buffer,,len);
}
}
//数据压缩
public void test2(HttpServletResponse response) throws IOException {
String data = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";
System.out.println("原始数据大小："+data.getBytes().length);
ByteArrayOutputStream bout = new ByteArrayOutputStream();
GZIPOutputStream gout = new GZIPOutputStream(bout);
gout.write(data.getBytes());
gout.close();
byte gzis[] = bout.toByteArray();// 得到压缩后的数据
System.out.println("压缩后大小："+gzis.length);
response.setHeader("content-Encoding", "gzip");
response.setHeader("Content-Length", gzis.length+"");
response.getOutputStream().write(gzis);
}
public void test1(HttpServletResponse response) {
response.setStatus();
response.addHeader("location", "http://www.baidu.com");
}