webwork中jsp上传图片问题！！

Question

我用的webwork框架。 我在作一个jsp页面，中页面中有写信息和上传图片。然后实现提交到数据库中。请问这个图片上传的功能怎么实现啊？

Answer 1

<%@ page import="org.apache.commons.fileupload.*"%>
<!--文件上传的包在的资源里--><FORM   action="../QU_BJDWH/SendEmail.jsp" enctype="multipart/form-data"  method="post" name="form1"  id="form1" onSubmit="return checkonsubmit()" >
      <input type="hidden" id="state" name="state" value="yy"> 
 <div>
<table border="0" cellpadding="3" cellspacing="0" align="center"><tr>
    
    <td >
        <nmttag:label  id="BAS_BJDYJ.lbl_operation_center" value="QU_BJDSDEM.ReceiveEmail" />  
    </td>
    <td >      
        <nmttag:text   id="QU_BJDSDEM.ReceiveEmail" width="<%=new Integer(410)%>" value="<%= resieve%>" />&nbsp;*
    </td>  
</tr><tr>
    <td>
        <nmttag:label  id="BAS_BJDYJ.lbl_operation_center" value="QU_BJDSDEM.CCEmail" />   
        </td>
        <td>
        <nmttag:text   id="QU_BJDSDEM.SendEmailMan" width="<%=new Integer(410)%>" value="<%= sende%>" />&nbsp;
    </td>  
</tr><tr>
    <td>
        <nmttag:label  id="BAS_BJDYJ.lbl_email_title" value="BAS_BJDYJ.lbl_email_title" />
    </td>
    <td>
        <nmttag:text  id="BAS_BJDYJ.txtEmail_title" value="<%=titles %>" width="<%=new Integer(410)%>" fieldLength="<%=new Integer(100)%>"/>&nbsp;
    </td>
</tr></table>
<div align="center"></div>
<table border="0" cellpadding="3" cellspacing="0" align="center">
<tr>
    <td>
        <nmttag:label  id="BAS_BJDYJ.lbl_email_content" value="BAS_BJDYJ.lbl_email_content" />
    </td>
     <td >
        &nbsp;<nmttag:textarea   id="BAS_BJDYJ.txtEmail_content" value="<%= content%>" cols="<%= new Long(65)%>" rows="<%= new Long(8)%>" fieldLength="<%=new Integer(400)%>"/>&nbsp;
    </td>
</tr>
<tr>
         <td>
             <nmttag:label  id="BAS_BJDYJ.lbl_email_title" value="QU_BJDSDEM.Annex" />
        </td>
        <td>      
        
        <nmttag:label  id="BAS_BJDYJ.lbl_email_title" value="<%= resultshowreportname.toString()%>" />
      
       </td>  
</tr><tr>
         <td>
         
        </td>
        <td>
           <script type="text/javascript">Attachment(10);</script>
       </td>  
</tr>
</table>
</div>
 <div align="center">
     <input type="submit" name="Submit" value="<%=MLUtils.getResourceString("QU_BJDSDEM.lblSend")%> ">  
</div>
    
   </FORM>   在jsp中注意form的属性[enctype="multipart/form-data"]
    request.getSession().removeAttribute("state");
    String uploadPath =sm.getEmailConfig("uploadPath"); 
    File testdir = new File(uploadPath); //为了保证目录存在,如果没有则新建该目录
    if (!testdir.exists()) {
    testdir.mkdirs();
    }
    DiskFileUpload fu = new DiskFileUpload(); 
    // 设置最大文件尺寸，这里是4MB            
    fu.setSizeMax(50194304);            
    // 设置缓冲区大小，这里是50kb            
    fu.setSizeThreshold(14096);            
    // 得到所有的文件：            
    List fileItems = fu.parseRequest(request);    
    FileItem file_item;
    for(int   i=0;i<fileItems.size();i++)
    {
           file_item=(FileItem)fileItems.get(i); 
    
      
    }  
        
    Iterator i = fileItems.iterator();            
    // 依次处理每一个文件：
    String   EmailTitle=null;
    String   Emailcctem=null; 
    
    List   ToEmaillist=new ArrayList();  
    List   ToCCEmail=new ArrayList();  
    
    List  Urllist =new ArrayList();
    while (i.hasNext()) {    
       
    FileItem fi = (FileItem) i.next();    
    // 检查当前的项目是普通的表单元素，还是一个上载的文件        
    if (fi.isFormField()) {                    
    // 获得表单域的名字        
   
      if (fi.getFieldName().equals("QU_BJDSDEM.ReceiveEmail"))
      {
      
              String   ToEmail =fi.getString();
               String[]  tt = st.split(ToEmail,";");
               for(int j=0;j<tt.length;j++)
               {
                   ToEmaillist.add(tt[j]);
               }
               
  
          // System.out.println("ToEmail  is ["+ToEmail+"]");
      }
      if (fi.getFieldName().equals("QU_BJDSDEM.SendEmailMan"))
      {
              String   CCEmail =fi.getString();                 
              if(CCEmail!=null &&  !"".equals(CCEmail))
     {
               String[]  cc = st.split(CCEmail,";");
               for(int h=0;h<cc.length;h++)
               {
               ToCCEmail.add(cc[h]); 
                }
 
   }else
  {
   ToCCEmail.add(""); 
}            

      }
      if (fi.getFieldName().equals("BAS_BJDYJ.txtEmail_title"))
      {
                 EmailTitle =fi.getString("UTF-8");
                 //String vl= ch.getstring(EmailTitle);
           // System.out.println("EmailTitle  is ["+vl+"]");
      }   
       if (fi.getFieldName().equals("BAS_BJDYJ.txtEmail_content"))
      {
                 Emailcctem =fi.getString("UTF-8");
            //  System.out.println("Emailcctem  is ["+Emailcctem+"]");
      }  
        
                
    String fieldName = fi.getFieldName();        
    }                
    // 获得文件名，这个文件名包括路径：        
    String fileName = fi.getName();        
    if (!(fileName == null)) {        
    // 写入文件，暂定文件名为a.txt，可以从fileName中提取文件名：
    
    String uploadFileName = fileName.substring(fileName.trim().lastIndexOf("\\") + 1);   



//File   GetSizeFile= new File(uploadPath+uploadFileName);
//System.out.println(uploadPath+uploadFileName);
    Urllist.add(uploadPath+uploadFileName);
   
/*FileSize =FileSize+GetSizeFile.length(); */
    fi.write(new File(uploadPath + uploadFileName));    
    pathlist.add(uploadPath+uploadFileName);  
 
    }        
    }
if(Urllist.size()>0)
{
for(int   h=0;h<Urllist.size();h++)
{
       File   GetSizeFile= new File(Urllist.get(h).toString());
//System.out.println(uploadPath+uploadFileName);    
FileSize =FileSize+GetSizeFile.length();
}
}
实现上传的sourse希望能对你有所帮助