用JSP实现文件下载功能时有时会出现文件乱码现象,下面通过实例代码来讲解如何去掉这些乱码
<%response.setContentType("APPLICATION/OCTET-STREAM"); %><jsp:directive.page import="java.io.File"/><% //注意：“%><” 这些代码之间一定不能留空隙，否则下载文件乱码。
String sFileName = request.getParameter("FileName");
String sDownName = request.getParameter("DownName");
//得到服务器绝对路径
String pathString = (String)request.getSession().getServletContext().getRealPath(File.separator+"protect");
<%response.setContentType("APPLICATION/OCTET-STREAM"); %><jsp:directive.page import="java.io.File"/><% //注意：“%><” 这些代码之间一定不能留空隙，否则下载文件乱码。
String sFileName = request.getParameter("FileName");
String sDownName = request.getParameter("DownName");
//得到服务器绝对路径
String pathString = (String)request.getSession().getServletContext().getRealPath(File.separator+"protect");
String sFilePath = "";
sFilePath = pathString+File.separator;
sDownName =new String(sDownName.getBytes("iso8859-1"),"gb2312");//关键是这句，否则会出现下载文件名称乱码
response.setContentType("application/x-msdownload");
response.setHeader("Content-disposition","attachment; filename="+new String(sDownName.getBytes("gb2312"),"iso8859-1"));
// 打开指定文件的流信息
java.io.FileInputStream fileInputStream = null; try{
fileInputStream = new java.io.FileInputStream(sFilePath+sFileName);
// 写出流信息
byte buffer[] = new byte[65000];
int i;
while( (i=fileInputStream.read(buffer, 0, 65000))!=-1 ) {
response.getOutputStream().write(buffer, 0, i);
}
out.flush();
out.close();
}catch(Exception ex){
ex.printStackTrace();
}finally{
if(fileInputStream!=null){ fileInputStream.close();
}
}
%>
String sFilePath = "";
sFilePath = pathString+File.separator;
sDownName =new String(sDownName.getBytes("iso8859-1"),"gb2312");//关键是这句，否则会出现下载文件名称乱码
response.setContentType("application/x-msdownload");
response.setHeader("Content-disposition","attachment; filename="+new String(sDownName.getBytes("gb2312"),"iso8859-1"));
// 打开指定文件的流信息
java.io.FileInputStream fileInputStream = null; try{
fileInputStream = new java.io.FileInputStream(sFilePath+sFileName);
// 写出流信息
byte buffer[] = new byte[65000];
int i;
while( (i=fileInputStream.read(buffer, 0, 65000))!=-1 ) {
response.getOutputStream().write(buffer, 0, i);
}
out.flush();
out.close();
}catch(Exception ex){
ex.printStackTrace();
}finally{
if(fileInputStream!=null){ fileInputStream.close();
}
}
%>