O'Reilly cos上传组件的使用(2/3) - 获取文件信息

O'Reilly cos上传组件的使用(2/3) - 获取文件信息

upload.html:

<form method="post" action="cos.jsp"
    enctype="multipart/form-data">
    文件1:<input type="file" name="file1" />
    说明:<input type="text" name="file1_desc" />
    <br />
    文件2:<input type="file" name="file2" />
    说明:<input type="text" name="file2_desc" />
    <input type="submit" value="上传" />
</form>

cos.jsp:

<%@page contentType="text/html;charset=GBK"%>
<%@page import="com.oreilly.servlet.MultipartRequest"%>
<%@page import="java.io.File,javax.servlet.ServletContext"%>
<%@page import="java.util.Enumeration,java.io.IOException"%>

O'Reilly cos上传组件的使用(2/3) - 获取文件信息<br />

<%
/*设置上传文件路径*/
ServletContext context = getServletContext();
String realPath = context.getRealPath("/");
String saveDir = realPath + "ch9//fileupload//upload//";
//out.println(saveDir + "<br />");//输出实际路径
File dir = new File(saveDir);
if(!dir.exists())
    dir.mkdirs();

int maxPostSize = 1*1024*1024;//1MB
String encoding = "GBK";

MultipartRequest multi = null;
try{
    multi = new MultipartRequest(request ,
            saveDir , maxPostSize , encoding);
}catch(IOException e){
    //上传大小超过maxPostSize就会出现IOException
    out.println(e.getMessage());
    return;
}
//至此文件已经上传完成！
//以下为获取上传文件的信息，并不是必需的。
%>

<%
//获取文件信息
Enumeration fileNames = multi.getFileNames();
while(fileNames.hasMoreElements()){
    //指表单中的name值
    String name = (String)fileNames.nextElement();
    String sysname = multi.getFilesystemName(name);
    String type = multi.getContentType(name);
    out.println("Request Name:" + name +"<br />");
    out.println("getFilesystemName:" +
            saveDir + sysname +"<br />");
    out.println("ContentType:" + type +"<br /><br />");
}

out.println("==========<br />");
%>

<%
//获取文件描述
Enumeration params = multi.getParameterNames();
while(params.hasMoreElements()){
    String param = (String)params.nextElement();
    String value = multi.getParameter(param);
    out.println("Param Name:" + param +"<br />");
    out.println("Param Value:" + value +"<br /><br />");
}

out.println("==========<br />");
%>

<%
//将前面两个组合起来:获取文件及文件描述
//<input type="file" name="file1" />
//<input type="text" name="file1_desc" />
String descExt = "_desc";
Enumeration files = multi.getFileNames();
while(files.hasMoreElements()){
    String name = (String)files.nextElement();
    String sysname = multi.getFilesystemName(name);
    String type = multi.getContentType(name);
    String desc = multi.getParameter(name + descExt);
    out.println("Request Name:" + name +"<br />");
    out.println("getFilesystemName:" +
            saveDir + sysname +"<br />");
    out.println("ContentType:" + type +"<br />");
    out.println("Description:" + desc + "<br /><br />");
}
%>