java jsp Struts2.X 文件上传
/**
*
*操作系统：WIN-XP
*后台程序：Java
*前端脚本：JavaScript/ExtJs/Html
*
*做过的尝试：用form的submit方式提交，在后台request.getInputStream()取到的值*为null,而*request.getContentLength()是可以正常取值的。用request.getRead()抛出错误，request has been *called 网查之后得知，似乎是Struts过滤掉了。另寻他法于是便有了下面代码。
*/
@ParentPackage(StrutsNamespace.PP_JSON)
@Namespace("")
@Action("savebillfile")
public class SaveBillFileAction extends SDBaseAction {
private static final long serialVersionUID = 5156288255337069381L;
private String msg;
private int ErrNo;
private String contentType;
private File docmentFile;
private String fileName;
private Boolean success = false;
private String billtype;
private String billid;
public String upload() throws Exception {
Connection con =null;
Statement stm =null;
PreparedStatement pst=null;
ErrNo=0;
msg="";
if(!checkFile())
{
return SUCCESS;
}
if(docmentFile.isFile())
{
FileInputStream in = new FileInputStream(docmentFile);
try{
con=ConnectPools.getConnection(getSession());
Date dt=new Date();
String date = DateFormat.getDateInstance().format(dt);
String sSql = "insert into billfiles(billtype,billid,filename,fileext,uploaddate,filesize,opid,filedata)values(?,?,?,?,?,?,?,?)";
pst = con.prepareStatement(sSql);
pst.setString(1, billtype);
pst.setString(2, billid);
pst.setString(3, fileName);
pst.setString(4, fileName.substring(fileName.indexOf("."), fileName.length()));
pst.setString(5, date);
pst.setLong(6, in.available());
pst.setInt(7, ((EmployInfo)this.getSession().getAttribute("employ")).getId());
pst.setBinaryStream(8,in,in.available());
pst.executeUpdate();
}
catch(Exception e){
ErrNo=1;
msg=e.getMessage();
}
finally{
try{
pst.close();
stm.close();
con.close();
}catch(Exception e)
{
ErrNo=1;
msg=e.getMessage();
}
}
}
setSuccess(true);
return SUCCESS;
}
private boolean checkFile() {
// TODO Auto-generated method stub
//检查文件
return true;
}
public void setFileName(String fileName) {
this.fileName = fileName;
}
public void setUploadFileName(String fileName) {
this.fileName = fileName;
}
public void setUploadContentType(String contentType) {
this.contentType = contentType;
}
public void setUpload(File docmentFile) {
this.docmentFile = docmentFile;
}
public String getMsg() {
return msg;
}
public void setSuccess(Boolean success) {
this.success = success;
}
public Boolean getSuccess() {
return success;
}
public void setBilltype(String billtype) {
this.billtype = billtype;
}
public void setBillid(String billid) {
this.billid = billid;
}
public int getErrNo() {
return ErrNo;
}
public void setMsg(String msg) {
this.msg = msg;
}
public void setContentType(String contentType) {
this.contentType = contentType;
}
}
//到此java代码全了。。
//接下来是脚本submit之后发现上传的进度条一直在那里走来走去，我滴个肾，又是一番百度。由于我这不要跳转，百度上许多方法在我这似乎行不通。。只好改用了Ajax。。
/*
* ajax那部分脚本如下
*/
var params={};
Ext.apply(params,{billtype:this.billType});
Ext.apply(params,{billid:this.billId});
Ext.Ajax.request({
url : 'savebillfile!upload.action',
timeout : 10000,
scope : this,
params:params,
isUpload:true,
form:"ufile",/*发现这个form好像有点不一样。。。ExtJs直接写出来的form好像有问题？*/
success : function(response)
{
var str = response.responseText.substring(response.responseText.indexOf('{'),response.responseText.indexOf('}')+1);//前台脚本返回来的竟然被<pre>框起来了。好吧，为了正常使用，就手动把json找出来。
var objFormData = Ext.util.JSON.decode(str);
if(objFormData.ErrNo==0)
{
Ext.Msg.show({
title:'提示',
buttons:Ext.MessageBox.OK,
msg: '上传成功！',
fn:function(button,e)
{
//上传成功关闭上传附件窗口
var window = Ext.getCmp('selectfileid');
window.close();
//刷新列表
var win= Ext.getCmp('billfileid');
var grid = win.findById('billfile_grid');
var store = grid.store;
store.load({
params:params
});
}
});
}
}
});
/*
* 最后贴出form的代码
*/
var fPanel=new Ext.Panel({
layout : 'form',
height:40,
html:'<form id="ufile" enctype="multipart/form-data">请选择附件<input type="file" name="upload" size="50"></form>'
});