// 创建一个FormPanel组件实例
var loginForm = new Ext.FormPanel({
id:'loginForm',// formPanel组件的ID
width:600,// 组件宽度
height:300,// 组件高度
frame:true,
fileUpload: true,
enctype:'multipart/form-data',
//实现非AJAX提交表单一定要加下面的两行！
onSubmit: Ext.emptyFn,
method:'POST',
align:'center',// 组件居左布局，还有right和center两个值可以选择
name: 'loginForm', //组件名称
labelAlign:"left",//让label居右
labelWidth:120,//定义label的宽度
items:[{
xtype: "textfield",
inputType:'file',
name: 'processFile',
fieldLabel: '文件',
allowBlank:false,
anchor:'95%'
public void deploy(HttpServletRequest request, HttpServletResponse response)
throws Exception {
request.setCharacterEncoding("utf-8");
SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddhhmmss");
String tmpDir = getServletContext().getRealPath("/temp");// 初始化上传文件的临时寄放目录
String uploadPath = getServletContext().getRealPath("/upload");// 初始化上传文件后的保存
try {
if (ServletFileUpload.isMultipartContent(request)) {
DiskFileItemFactory factory = new DiskFileItemFactory();
//指定在内存中缓存数据大小,单位为byte,这里设为1Mb
factory.setSizeThreshold(1 * 1024 * 1024);
//设置一旦文件大小超过getSizeThreshold()的值时数据存放在硬盘的目录
factory.setRepository(new File(tmpDir));
ServletFileUpload sfu = new ServletFileUpload(factory);
// 指定单个上传文件的最大尺寸,单位:字节，这里设为5Mb
sfu.setFileSizeMax(100 * 1024 * 1024);
//指定一次上传多个文件的总尺寸,单位:字节，这里设为10Mb
sfu.setSizeMax(100 * 1024 * 1024);
sfu.setHeaderEncoding("UTF-8"); //设置编码，因为我的jsp页面的编码是utf-8的
FileItemIterator fii = sfu.getItemIterator(request);// 解析request请求
uploadPath = uploadPath + "\\jbpm\\"; // 选定上传的目录此处为当前目录
if (!new File(uploadPath).isDirectory()){
new File(uploadPath).mkdirs(); //选定上传的目录此处为当前目录，没有则创建
}
int index = 0;
while (fii.hasNext()) {
FileItemStream fis = fii.next();// 从集合中获得一个文件流
if (!fis.isFormField() && fis.getName().length() > 0) {// 过滤掉表单中非文件域
String fileName = fis.getName();// 获得上传文件的文件名
BufferedInputStream in = new BufferedInputStream(fis.openStream());
BufferedOutputStream out = new BufferedOutputStream(
new FileOutputStream(new File(uploadPath + "\\" + fileName)));
Streams.copy(in, out, true); // 开始把文件写到你指定的上传文件夹
index++;
}
}
}
} catch (Exception e) {
e.printStackTrace();
}
response.setContentType("text/html");
response.getWriter().print("{success:true}");
}
上传文件为空:因为：
<filter-mapping>
<!--拦截所有的URL请求-->
<filter-name>struts2</filter-name>
<!--上传文件会不起作用-->
<!-- url-pattern>/*</url-pattern -->
<url-pattern>*.action</url-pattern>
</filter-mapping>
原因就是因为在web.xml中配置了Struts的filter
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
改成
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>*.action</url-pattern>
</filter-mapping>
就可以了