JSP下载文件源代码
合集下载
相关主题
- 1、下载文档前请自行甄别文档内容的完整性，平台不提供额外的编辑、内容补充、找答案等附加服务。
- 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
- 3、如文档侵犯您的权益，请联系客服反馈,我们会尽快为您处理(人工客服工作时间：9:00-18:30)。
jsp下载全攻略
1、下载链接页面download.html
页面源码如下：
<!--
文件名：download.html
-->
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
m_contentDisposition + " filename=" +
toUtf8String(getFileName(s)));
else
if(s2.length() == 0)
m_response.setHeader("Content-Disposition",
m_contentDisposition);
else
if(s1.length() == 0)
m_response.setContentType("application/x-msdownload");
else
m_response.setContentType(s1);
m_response.setContentLength((int)l);
<title>下载</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
</head>
<body>
<a href="jsp/do_download.jsp">点击下载</a>
</body> ></html>
for (int i=0;i<s.length();i++) {
char c = s.charAt(i);
if (c >= 0 && c <= 255) {
sb.append(c);
} else {
byte[] b;
try {
b = Character.toString(c).getBytes("utf-8");
k += j;
m_response.getOutputStream().write(abyte0, 0, j);
}
fileinputstream.close();
}
public static String toUtf8String(String s) {
StringBuffer sb = new StringBuffer();
m_contentDisposition = m_contentDisposition != null ?
m_contentDisposition : "attachment;";
if(s2 == null)
m_response.setHeader("Content-Disposition",
// 初始化
su.initialize(pageContext);
// 设定contentDisposition为null以禁止浏览器自动打开文件，
//保证点击链接后是下载文件。若不设定，则下载的文件扩展名为
//doc时，浏览器将自动用word打开它。扩展名为pdf时，
//浏览器将用acrobat打开。
2、下载处理页面do_download.jsp
ቤተ መጻሕፍቲ ባይዱ
源码如下：
<%@ page contentType="text/html;charset=gb2312"
import="com.jspsmart.upload.*" %><%
// 新建一个SmartUpload对象
SmartUpload su = new SmartUpload();
else
m_response.setHeader("Content-Disposition",
m_contentDisposition + " filename=" + toUtf8String(s2));
while((long)k < l)
{
int j = fileinputstream.read(abyte0, 0, i);
} catch (Exception ex) {
System.out.println(ex);
b = new byte[0];
}
for (int j = 0; j < b.length; j++) {
int k = b[j];
if (k < 0) k += 256;
sb.append("%" + Integer.toHexString(k).
denied (1035).");
if(isVirtual(s))
s = m_application.getRealPath(s);
java.io.File file = new java.io.File(s);
FileInputStream fileinputstream = new FileInputStream(file);
toUpperCase());
}
}
}
return sb.toString();
}
if(s.equals(""))
throw new IllegalArgumentException("File '" + s +
"' not found (1040).");
if(!isVirtual(s) && m_denyPhysicalPath)
throw new SecurityException("Physical path is
su.setContentDisposition(null);
// 下载文件
su.downloadFile("/upload/如何赚取我的第一桶金.doc");
%>
3、如何下载中文文件
public void downloadFile(String s, String s1, String s2, int i)
throws ServletException, IOException, SmartUploadException
{
if(s == null)
throw new IllegalArgumentException("File '" + s +"' not found (1040).");
long l = file.length();
boolean flag = false;
int k = 0;
byte abyte0[] = new byte[i];
if(s1 == null)
m_response.setContentType("application/x-msdownload");
1、下载链接页面download.html
页面源码如下：
<!--
文件名：download.html
-->
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
m_contentDisposition + " filename=" +
toUtf8String(getFileName(s)));
else
if(s2.length() == 0)
m_response.setHeader("Content-Disposition",
m_contentDisposition);
else
if(s1.length() == 0)
m_response.setContentType("application/x-msdownload");
else
m_response.setContentType(s1);
m_response.setContentLength((int)l);
<title>下载</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
</head>
<body>
<a href="jsp/do_download.jsp">点击下载</a>
</body> ></html>
for (int i=0;i<s.length();i++) {
char c = s.charAt(i);
if (c >= 0 && c <= 255) {
sb.append(c);
} else {
byte[] b;
try {
b = Character.toString(c).getBytes("utf-8");
k += j;
m_response.getOutputStream().write(abyte0, 0, j);
}
fileinputstream.close();
}
public static String toUtf8String(String s) {
StringBuffer sb = new StringBuffer();
m_contentDisposition = m_contentDisposition != null ?
m_contentDisposition : "attachment;";
if(s2 == null)
m_response.setHeader("Content-Disposition",
// 初始化
su.initialize(pageContext);
// 设定contentDisposition为null以禁止浏览器自动打开文件，
//保证点击链接后是下载文件。若不设定，则下载的文件扩展名为
//doc时，浏览器将自动用word打开它。扩展名为pdf时，
//浏览器将用acrobat打开。
2、下载处理页面do_download.jsp
ቤተ መጻሕፍቲ ባይዱ
源码如下：
<%@ page contentType="text/html;charset=gb2312"
import="com.jspsmart.upload.*" %><%
// 新建一个SmartUpload对象
SmartUpload su = new SmartUpload();
else
m_response.setHeader("Content-Disposition",
m_contentDisposition + " filename=" + toUtf8String(s2));
while((long)k < l)
{
int j = fileinputstream.read(abyte0, 0, i);
} catch (Exception ex) {
System.out.println(ex);
b = new byte[0];
}
for (int j = 0; j < b.length; j++) {
int k = b[j];
if (k < 0) k += 256;
sb.append("%" + Integer.toHexString(k).
denied (1035).");
if(isVirtual(s))
s = m_application.getRealPath(s);
java.io.File file = new java.io.File(s);
FileInputStream fileinputstream = new FileInputStream(file);
toUpperCase());
}
}
}
return sb.toString();
}
if(s.equals(""))
throw new IllegalArgumentException("File '" + s +
"' not found (1040).");
if(!isVirtual(s) && m_denyPhysicalPath)
throw new SecurityException("Physical path is
su.setContentDisposition(null);
// 下载文件
su.downloadFile("/upload/如何赚取我的第一桶金.doc");
%>
3、如何下载中文文件
public void downloadFile(String s, String s1, String s2, int i)
throws ServletException, IOException, SmartUploadException
{
if(s == null)
throw new IllegalArgumentException("File '" + s +"' not found (1040).");
long l = file.length();
boolean flag = false;
int k = 0;
byte abyte0[] = new byte[i];
if(s1 == null)
m_response.setContentType("application/x-msdownload");