jsp实现下载excel,word,pdf,jgp,gif,xml,js过滤器实现文档

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2024年7月25日发(作者：)

下面代码有选择的粘贴进自己项目即可，其实现解决了tomcat、resin服务器中文下载乱码

问题。

配置如下

xmlns:xsi="/2001/XMLSchema-instance"

xsi:schemaLocation="/xml/ns/javaee

/xml/ns/javaee/web-app_2_">

downLoad

adFilter

downLoad

*.downLoad

Jsp页面配置如下其下载利用a标签进行连接，前提是服务器上下载文件路径已知

需要引进 el表达式和jquery.

<%@ page language="java" import=".*" pageEncoding="utf-8"%>

<%

String path = textPath();

String basePath =

eme()+"://"+verName()+":"+verPort()+path+"/";

%>

<%@ taglib uri="/jsp/jstl/core" prefix="c"%>

过滤器filter配置如下

package ;

import edInputStream;

import edOutputStream;

import edReader;

import ;

import putStream;

import tputStream;

import ption;

import tream;

import treamReader;

import Stream;

import riter;

import oder;

import ;

import Chain;

import Config;

import tException;

import tRequest;

import tResponse;

import rvletRequest;

import rvletResponse;

public class DownLoadFilter implements Filter {

public void destroy() {

}

public void doFilter(ServletRequest request1, ServletResponse response1,

FilterChain arg2) throws IOException, ServletException {

HttpServletRequest request = (HttpServletRequest) request1;

HttpServletResponse response = (HttpServletResponse) response1;

//racterEncoding("UTF-8");

//String filePath = new String(ameter("filePath").getBytes("ISO8859-1"),

"UTF-8");

racterEncoding("ISO8859-1");

String filePath = new

String(ameter("filePath").getBytes("ISO8859-1"),"UTF-8");

n("*****************************************************filePat

h is :" + filePath);

String suffix = ing(dexOf(".") + 1);

n("********************suffix is:"+suffix);

String contentType = getContentType(suffix);//获得尾缀设置不同contentType

String contentDisposition = "attachment; filename="+new

String(ing(dexOf("_")+1));

n("********************************************"+contentDisposit

ion);

racterEncoding("ISO8859-1");

tentType(contentType);

der("Content-disposition", new

String(es("UTF-8"),"ISO8859-1"));

try {

InputStream is = new FileInputStream(filePath);

OutputStream os = putStream();

int byteRead;

byte[] buffer = new byte[1024];

while ((byteRead = (buffer)) != -1) {

(buffer, 0, byteRead);

}

();

();

} catch (Exception e) {

tackTrace();

}

}

/**

*

* @param suffix 下载文件尾缀

* @return 返回不同tType

*/

public String getContentType(String suffix) {

if (("txt")) {

return "text/plain";

} else if(("doc") || ("docx")) {

return "application/msword;charset=gb2312";

} else if(("xls") || ("xlsx")) {

return "application/-excel";

} else if(("pdf")) {

return "application/pdf";

}else if(("gif")){

return "image/gif" ;

}else if(("jpg")){

return "image/jpeg" ;

}else if(("htm")||("html")||("jsp")){

return "text/html" ;

}else if(("xml")){

return "text/xml" ;

}else if(("js")){

return "application/x-javascript" ;

}

return "application/octet-stream";

}

public void init(FilterConfig config) throws ServletException {

}

}

注：其中编码ISO8859-1不能乱改，否则出现解析路径错误或者下载文件出错。该编码利用

的是tomcat和resin服务器解析时实际所用编码。祝各位好运。花了我半天时间才搞定乱码

现象。

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