如何点击�q�接直接下蝲(.txt文本)文�g

duy — Tue, 10 Apr 2007 01:14:00 GMT

最�q�遇��C��q�样的问�?在不使用�l��g【如jspsmartupload】的情况�?在web��面上如果一个有个连�?�q�接的的是文本文�?当左键点�ȝ��话会(x��)查看�q�个文�g,右键点击可以下蝲.但是如果是windows不识别的文�g,左键点击直接��׃��载了(ji��n)比如zip,那如何点��d��键直接下�?txt的文本文件呢?
要直接下载一个文�Ӟ��我们需要做两�g事，�W�一件事是：(x��)讑֮�响应的内容类�?#8220;application/octet-stream”�Q�大��写无关。第二�g事是�Q�设�|�HTTP的响应头名字为：(x��)Content-Disposition�Q�设定��gؓ(f��)�Q�attachment; filename = theFileName。这里的theFileName��是出现在文件下载对话框里的默认文�g名，通常和所下蝲的文件名字相同，但也可以不同�?br>

代码

<meta http-equiv="Content-Type" content="text/html; charset=gbk">
<HTML>
<HEAD>
HEAD>
<BODY>
<a href = "download1.jsp?filepath=d:\\&filename=1a.txt" >downloadtest1a>
BODY>
HTML>

�q�是��面上的�q�接�Q�我传了(ji��n)个�\径和文�g�?

代码

<%
String filename = request.getParameter("filename");//"1a.txt";
String filepath = request.getParameter("filepath");//"d:\\";
int i = 0;
response.setContentType("application/octet-stream");
response.setHeader("Content-Disposition","attachment;filename = "+filename);
java.io.FileInputStream fileInputStream = new java.io.FileInputStream(filepath+filename);
while((i= fileInputStream.read()) != -1){
out.write(i);
}
%>

<%
String filename = request.getParameter("filename");//"1a.txt";
String filepath = request.getParameter("filepath");//"d:\\";
int i = 0;
response.setContentType("application/octet-stream");
response.setHeader("Content-Disposition","attachment;filename = "+filename);
java.io.FileInputStream fileInputStream = new java.io.FileInputStream(filepath+filename);
while((i= fileInputStream.read()) != -1){
out.write(i);
}
%>

�q�是被调用的download1.jsp�Q�这个jsp��是执行直接下蝲文�g�?br>参考一下JS来实�?

function svcode(obj) {
var winname = window.open('', '_blank', 'height=1,width=1,top=200,left=300');
winname.document.open('text/html', 'replace');
winname.document.writeln(obj.value);
winname.document.execCommand('saveas','','code.txt');
winname.close();
}

duy 2007-04-10 09:14 发表评论

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如何点击�q�接直接下蝲(.txt文本)文�g