3

我正在尝试开发一个允许用户加载文件的小型 Stripes 项目,ActionBean 的基本实现如下所示:

public class UploadActionBean extends BaseActionBean{

private FileBean fileBean;

private final String fileUpload="/WEB-INF/jsp/file-upload.jsp";

public void setFileBean(FileBean fileBean){

    this.fileBean=fileBean;
}

public FileBean getFileBean(){

    return this.fileBean;
}

@DefaultHandler
public Resolution goToFile(){

    return new ForwardResolution(fileUpload);
}

public Resolution upload() throws IOException{

    System.out.println(fileBean.getFileName());

    fileBean.getContentType();

    fileBean.getSize();

    fileBean.save(new File("/Users/enricoiorio/Desktop"));

    return new ForwardResolution(fileUpload);
}

}

就像我说的很简单,jsp是这样的,也很简单:

 <s:form beanclass="stripesbook.action.UploadActionBean" enctype="multipart-form/data">

<s:file name="fileBean"/>

<s:submit name="upload" value="upload"/>

该应用程序似乎部署正确,该应用程序启动没有问题,但只要我点击上传我得到以下异常:

net.sourceforge.stripes.exception.StripesRuntimeException: Could not construct a MultipartWrapper for the current request.

它来自一个 nullPointerException:

at net.sourceforge.stripes.controller.multipart.DefaultMultipartWrapperFactory.wrap(DefaultMultipartWrapperFactory.java:151)

我知道我必须使用 DefaultMultipartWrapperFactory 类的 wrap() 方法,但是如何使用呢?我正在努力寻找可以解释但没有结果的文档,有什么建议吗?

4

2 回答 2

4

似乎您只是缺少Commons FileUpload。尝试将其添加到您的类路径中,看看它是否有效。

于 2011-04-15T20:14:14.947 回答
0

I had got the same problem. Got resolved by adding init param in stripes Filters.

<init-param>
  <param-name>MultipartWrapper.Class</param-name>
  <param-value>net.sourceforge.stripes.controller.multipart.CommonsMultipartWrapper</param-value>
</init-param>
于 2014-07-17T12:00:57.757 回答