gwt使用apache-commons-fileUpload,轻松实现文件下传

gwt使用apache-commons-fileUpload,轻松实现文件上传

gwt使用apache-commons-fileUpload,轻松实现文件上传，图片上传等功能。

1.gwt 前端页面（可以做成组建，供各个模块调用）

FormPanel formPanel = new FormPanel();

formPanel.setAction("/uploadImage");

formPanel.setEncoding(FormPanel.ENCODING_MULTIPART);

formPanel.setMethod(FormPanel.METHOD_POST);

FlowPanel panel = new FlowPanel();

formPanel.setWidget(panel);

FileUpload fileUpload = new FileUpload();

fileUpload.setName("file");

panel.add(fileUpload);

ok,formpanel触发sumbit即可。下面便是servlet端的实现。

2.servlet端

FileItemFactory factory = new DiskFileItemFactory();

ServletFileUpload upload = new ServletFileUpload(factory);

List items = null;

try {

items = upload.parseRequest(request);

} catch (FileUploadException ex) {

throw new ServletException(ex);

}

Iterator iter = items.iterator();

while (iter.hasNext()) {

FileItem item = (FileItem) iter.next();

if (item.isFormField() == false) {

//获得byte数组

byte[] bytes = item.get();

//或直接保存成文件

File file = new FIle("D:/temp",item.getName());

item.write(file);//直接保存文件

}

1 楼 ccx410 2011-12-19

安装gwt报错，unable to retrieve osgi.bundle,com.google.gwt.eclipse.sdkbundle如何解决