1 下载txt文件 这个花了我不少时间 原因是用ie下载txt文件时是在页面中直接打开了文件.虽然查了一些资料,也看了别人的解决方案,可还是解决不了问题,最后发现是一个字母惹的祸:少写一个字母 嘿嘿 够马虎!!!代码如下:OutputStream o=response.getOutputStream(); byte b[]=new byte[500]; File fileLoad=new File("e:/test.txt"); response.setContentType("application/octet-stream"); response.setHeader("content-disposition","attachment; filename=text.txt"); long fileLength=fileLoad.length(); String length1=String.valueOf(fileLength); response.setHeader("Content_Length",length1); FileInputStream in=new FileInputStream(fileLoad); int n; while((n=in.read(b))!=-1){ o.write(b,0,n); } in.close(); out.clear(); out = pageContext.pushBody();2 下载excel文件 跟下载txt文件时的唯一区别是ContentType值的设置不同:OutputStream o=response.getOutputStream(); byte b[]=new byte[500]; File fileLoad=new File("e:/text.xls"); response.reset(); response.setContentType("application/vnd.ms-excel"); response.setHeader("content-disposition","attachment; filename=text.xls"); long fileLength=fileLoad.length(); String length1=String.valueOf(fileLength); response.setHeader("Content_Length",length1); FileInputStream in=new FileInputStream(fileLoad); int n; while((n=in.read(b))!=-1){ o.write(b,0,n); } in.close(); out.clear(); out = pageContext.pushBody(); 这两个本来是放在一起的,因为我的页面中需要判断是下载的txt文件还是xls文件 在这里给分开了 需要注意的是,最后两句一定要加上,否则会出现getOutputStream()错误的!!!! 实例:<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %>My JSP 'index.jsp' starting page 普通测试:Down a.txt 中文文件名测试:Down 中文.txt 普通转向:down.txt down2.jsp: <%@ page language="java" import="java.util.*,java.io.* " pageEncoding="UTF-8"%> <% request.setCharacterEncoding("utf-8"); String filename = request.getParameter("filename"); filename = new String(filename.getBytes("ISO-8859-1"),"UTF-8"); System.out.println(filename); OutputStream o=response.getOutputStream(); byte b[]=new byte[500]; /** * 得到文件的当前路径 * @param args */ String serverpath=request.getRealPath("\\"); File fileLoad=new File(serverpath+filename); response.setContentType("application/octet-stream"); response.setHeader("content-disposition","attachment; filename="+filename); long fileLength=fileLoad.length(); String length1=String.valueOf(fileLength); response.setHeader("Content_Length",length1); FileInputStream in=new FileInputStream(fileLoad); int n; while((n=in.read(b))!=-1){ o.write(b,0,n); } in.close(); out.clear(); out = pageContext.pushBody(); %>
转载:http://blog.csdn.net/z69183787/article/details/12995451