response:文件下载的基本代码 之 解决中文乱码问题

浏览器输入：localhost:8080/WEB14/download.html

servlet文件：

package content;

import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;

import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class DownloadServlet2 extends HttpServlet {

	protected void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		
//		获得要下载的文件名称
		String filename = request.getParameter("filename");
		
//		解决中文乱码
		filename = new String(filename.getBytes("ISO8859-1"),"UTF-8");
		
//		要下载的这个文件的类型---客户端通过文件的MIME类型去区分类型
		response.setContentType(this.getServletContext().getMimeType(filename));
//		告诉客户端文件不是直接解析，而是以附件的形式打开（下载）
		response.setHeader("Content-Disposition", "attachment;filename="+filename);
		
//		获取文件的绝对路径
		String path = this.getServletContext().getRealPath("download/"+filename);
		
//		获得文件输入流
		InputStream in = new FileInputStream(path);
//		获取文件输出流----通过response获得的输出流  用于向客户端写内容
		ServletOutputStream out = response.getOutputStream();
		
//		文件拷贝的代码实现
		int len = 0;
		byte[] buffer = new byte[1024];
		while((len = in.read(buffer)) > 0){
			out.write(buffer, 0, len);
		}
		in.close();
		out.close();
	}
	protected void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		doGet(request, response);
	}
}

html配置文件：

	
使用服务器端编码的方式实现文件下载
	a.jpg

	a.MOV

	a.mp3

	a.txt

	a.zip

	美女.jpg