一个页面能提交多个form吗，如果能，后台怎么处理
比如form1.submit();form2.submit();
之所以问这个问题是因为我现在有个困惑，我在做一个文件上传的页面，
form如下
<form name= "uploadForm " method= "post " action= "uploadfile.jsp " enctype= "multipart/form-data ">
但是这样其他input里面的值就传不到后台了，所以我想用两个form，一个
上传文件，一个传值,不知道可行不
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应该不行吧...
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两个form 一个负责上传文件 另外一个是相关的信息 默认file为null不就成了
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用一个form就可以实现你要的效果,一是用专用的上传组件,根据组建提供的接口就可以得到上一个页面的input值.如果不用组件就用javascript把参数和参数值加到url里传到uploadfile.jsp就可以了
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一个页面可以使用多个FORM可以提交给不同的程序处理也可以提交给相同程序处理，只要你控制的没有问题，LZ的意思是想一次提交 2个FORM的内容吧？ 写个script应该没问题。
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vacuumboy(菜鸟依旧)
说的对.
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菜鸟来帮忙顶顶
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将form中的name定义不同的名字
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一个表单就可以提交多个文件,要能提交多个表单,我觉得这是不可能的
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写个SCRIPT
function subForms(){
form1.submit();
form2.submit();
}
这样不是两个一起提交？
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一个页面里可以写2个form，但是楼主的问题没有必要写两个form，传一个标志位，判断是传文件还是传值就可以了。
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楼主的问题我在前些日子也遇到过，不如要做一个文章配图(表单提交文章标题，内容等信息，文章配图是通过type= 'file '来上传一幅图片)，分开来做十分简单，表单提交到servlet通过javabean实现添加,上传使用jspsmartupload.jar也十分方便，但是两者合一是否可以实现呢？
我做的是通过一个jump.jsp来实现的，说白了就是先上传后提交
在jump.jsp
<%@ page contentType= "text/html;charset=GBK " %>
<%@ page language= "java " import= "com.jspsmart.upload.* "%>
<jsp:useBean id= "mySmartUpload " scope= "page " class= "com.jspsmart.upload.SmartUpload " />
<HTML>
<BODY BGCOLOR= "white ">
<%
//初始化文件名和上传结果
String FileName = "noImage ";
String result = "error ";
try
{
// 执行初始化操作
mySmartUpload.initialize(pageContext);
//限制文件上传格式
mySmartUpload.setAllowedFilesList( "jpg,gif,bmp,jpeg ");
// 上传文件到服务器
mySmartUpload.upload();
//如果有文件上传
if(mySmartUpload.getFiles().getCount()> 0)
{
// 取出文件
com.jspsmart.upload.File myFile = mySmartUpload.getFiles().getFile(0);
//
//如果文件存在
if(myFile.getSize()> 0)
{
String k = myFile.getFileExt();
java.util.Date d = new java.util.Date();
FileName = d.getTime()+ k;
myFile.saveAs( "/upload/ " +FileName);
result= "success ";
}
else
{
System.out.println( "文件不存在！ ");
//result= "error ";
}
}
else
{
System.out.println( "没上传！ ");
//result= "error ";
}
}
catch(Exception ex)
{
System.out.println(ex);
//result= "error ";
}
finally
{
//存储表单信息
String Uid = mySmartUpload.getRequest().getParameter( "Uid ");
String Atitle = mySmartUpload.getRequest().getParameter( "Atitle ");
String Acontent = mySmartUpload.getRequest().getParameter( "Acontent ");
request.setAttribute( "Uid ",Uid);
request.setAttribute( "Atitle ",Atitle);
request.setAttribute( "Acontent ",Acontent);
request.setAttribute( "FileName ",FileName);
request.setAttribute( "Result ",result);
}
%>
<jsp:forward page= "servlet1 "/>
</BODY>
</HTML>
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用apache的文件上传包commons-fileupload-1.0.jar
下载地址：http://jakarta.apache.org/commons/fileupload/
用一个FORM提交，其他的input都给上不同的名字。
例如： <INPUT type= "text " name= "MASTER_REVDATE " maxlength= "10 " size= "20 ">
在服务端这么来取：
String _revDate = ((ParamPart)paramMap.get( "MASTER_REVDATE ")).getValue();
另外写一个方法来取得上传流的各部分
protected HashMap getMultipartMap(HttpServletRequest request) throws EconException {
final int MAX_CONTENT_LENGTH= 1024 * 1000 * 10;
MultipartParser parser= null;
HashMapparamMap= new HashMap();
Part eachPart= null;
try {
parser = new MultipartParser(request, MAX_CONTENT_LENGTH);
List params = parser.getEachParts();
for(int i=0 ; i <params.size() ; i++) {
eachPart = (Part)params.get(i);
paramMap.put(eachPart.getName(), params.get(i));
}
return paramMap;
} catch (FileUploadException e) {
if(e instanceof SizeLimitExceededException) {
throw new EconException(EconException.UPLOAD_SIZE_ERROR, e);
} else {
throw new EconException(EconException.ERROR, e);
}
} catch (Exception e) {
throw new EconException(EconException.ERROR, e);
}
}
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用一百个都没问题，起不同的名字就行了，
但点提交按钮的时候，好像只能提交一个。
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一次只能提交一个,
楼主的问题关键在于对enctype= "multipart/form-data "的form不会处理
非file型input值吧,根据你使用的组件不同,这个有区别,
给你个用apache的文件上传包commons-fileupload-1.0.jar的代码:
(请注意//*******提示的部分的处理方式)
package edu.lynu.webexam.servlet;
import java.io.*;
import java.util.*;
import java.text.*;
import javax.servlet.*;
import javax.servlet.http.*;
import edu.lynu.webexam.common.CommonObjects;
import org.apache.commons.fileupload.*;
public class UploadServlet extends WebExamBaseServlet {
private static String ABSOLUTE_UPLOAD_PATH ;
//Process the HTTP Get request
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
HttpSession session = request.getSession(true);
}
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
try{
ABSOLUTE_UPLOAD_PATH = CommonObjects.WEBAPP_ROOT+ "uploads\\ ";
File new_path = new File(ABSOLUTE_UPLOAD_PATH);
if(false == new_path.exists()) new_path.mkdir();
DiskFileUpload fu = new DiskFileUpload();
// maximum size before a FileUploadException will be thrown
fu.setSizeMax(1000000);
// maximum size that will be stored in memory
fu.setSizeThreshold(4096);
// the location for saving data that is larger than getSizeThreshold()
fu.setRepositoryPath(ABSOLUTE_UPLOAD_PATH);
List fileItems = fu.parseRequest(request);
System.out.println( "total variable numbers= "+fileItems.size());
Iterator i = fileItems.iterator();
//******* assume it is variable 'process_id "
FileItem fi1=(FileItem)i.next();
System.out.println( "fi1.getFieldName()= "+fi1.getFieldName());
System.out.println( "fi1.getString()= "+ fi1.getString() ); //correct!
//******* assume it is variable 'compart_symbol "
FileItem fi2=(FileItem)i.next();
System.out.println( "fi2.getFieldName()= "+fi2.getFieldName());
String compart_symbol = fi2.getString();
System.out.println( "fi2.getString()= "+ fi2.getString() ); //correct!
//> > > > > > > assume it is variable 'import_txt " file control
FileItem fi3 = (FileItem)i.next();
System.out.println( "fi3.getFieldName()= "+fi3.getFieldName());
String fileName_tmp = fi3.getName();
System.out.println( "fi3.getName()= "+ fi3.getName() );
String fileName_no_path = fileName_tmp.substring(fileName_tmp.lastIndexOf( "\\ ")+1);
File fileToWrite = null;
if( fi3.getInputStream().available()> 0 ){
fileToWrite = new File( ABSOLUTE_UPLOAD_PATH + fileName_no_path );
fi3.write(fileToWrite);
}
if( fileToWrite != null && true==ImportTxtFile(fileToWrite, compart_symbol) ){
request.setAttribute( "file_name ",(ABSOLUTE_UPLOAD_PATH + fileName_no_path).replace( "\\ ", "/ "));
request.getRequestDispatcher(CommonObjects.JSP_ROOT2+ "UploadOK.jsp ").forward(request, response);
}else{
response.sendRedirect(CommonObjects.JSP_ROOT+ "error.jsp ");
}
}catch(Exception e){
System.out.println( "Exception ocurred while UPLOAD "+e);
e.printStackTrace();
response.getOutputStream().println( "upload fail ");
return;
}
}
private boolean ImportTxtFile( File import_txt_file, String symbol ) {
return true;
}
}
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嘿嘿，我正在做的一个东西里面正好有一个表单提交到多个地方
<FORM METHOD= "POST " ACTION= "index.asp " NAME= "info " onSubmit= "return document.returnValue; ">
<INPUT TYPE= "text " NAME= "ID " >
<INPUT TYPE= "submit " value= "对 比 " onclick= "document.info.action= 'Compare.asp '; return document.returnValue; ">
<INPUT TYPE= "submit " value= "删 除 " onclick= "document.info.action= 'index.asp?Action=Del '; return document.returnValue; ">
<INPUT TYPE= "submit " value= "修 改 " onclick= "document.info.action= 'index.asp?Action=Edit '; return document.returnValue; ">
<INPUT TYPE= "submit " value= "刷 新 " onclick= "document.info.action= 'index.asp?Action=ReOrder '; return document.returnValue; ">
<INPUT TYPE= "submit " value= "广 告 " onclick= "document.info.action= 'index.asp?Action=Ad '; return document.returnValue; ">
<INPUT TYPE= "submit " value= "已 售 " onclick= "document.info.action= 'index.asp?Action=Sale '; return document.returnValue; ">
</form>
这样就可以了
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楼上的只能成功第一个！
