Struts2实现同时多文件上传

步骤：

第一步：再WEB-INF/lib下加入commons-fileupload-1.2.1.jar、commns-io-1.32.2.jar

第二步：

    <form action="${pageContext.request.contextPath}/control/employee/list_execute.action" enctype="multipart/form-data" method="post">
    	文件1:<input type="file" name="image"><br/>
    	文件2:<input type="file" name="image"><br/>
    	文件3:<input type="file" name="image"><br/>
    	<input type="submit" value="上传"/>
    </form>

注意：enctype="multipart/form-data" method="post"为固定值

第三步：

public class HelloWorldAction {
	private File[] image; //得到上传文件
	private String[] imageFileName; //得到文件的名称
	private String[] imageContentType; //得到文件的类型
	public File[] getImage() {
		return image;
	}

	public void setImage(File[] image) {
		this.image = image;
	}

	public String[] getImageFileName() {
		return imageFileName;
	}

	public void setImageFileName(String[] imageFileName) {
		this.imageFileName = imageFileName;
	}
	
	public String[] getImageContentType() {
		return imageContentType;
	}

	public void setImageContentType(String[] imageContentType) {
		this.imageContentType = imageContentType;
	}
	public String execute() throws Exception{
		String realpath = ServletActionContext.getServletContext().getRealPath("/images");
		if(image!=null){
			File savedir = new File(realpath);
			if(!savedir.exists()) savedir.mkdirs();
			for(int i = 0 ; i<image.length ; i++){				
				File savefile = new File(savedir, imageFileName[i]);
				FileUtils.copyFile(image[i], savefile);
			}
			ActionContext.getContext().put("message", "上传成功");
		}
		return "success";
	}
}

注意：image属性要和form表单上传控件名称要一致