content-type

package com.servlet;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
 * 案例：content-type作用
 * @author zhiyong
 *
 */
public class ResponseDemo4 extends HttpServlet {
  public void doGet(HttpServletRequest request, HttpServletResponse response)
      throws ServletException, IOException {
    
    /*
     * 设置响应实体内容的编码
     */
//    response.setCharacterEncoding("utf-8");
    
    /*
     * 1.服务器发送给浏览器的数据类型
     */
//    response.setContentType("text/xml; charset=utf-8");
    
    response.setContentType("text/html; charset=utf-8");
    
//    response.getWriter().write("这里是body的内容");
    response.getOutputStream().write("这里是body的内容".getBytes("utf-8"));
    
    
    
    /*
     * 下载图片
     */
/*    File file = new File("f:/cool.png");
    
     * 设置头，以下载方式打开文件
     
    response.setHeader("content-disposition", "attachment; filename=" + file.getName());
    
    
     * 发送图片，字节
     
    response.setContentType("image/png");
    FileInputStream in = new FileInputStream(file);
    byte[] buff = new byte[1024];
    int len = 0;
    //把图片的内容写出到浏览器
    while((len = in.read(buff)) != -1){
      response.getOutputStream().write(buff, 0, len);
    }*/
  }
}