Struts2上传文件

实现步骤

1)    上传表单页面

<s:form action="/upload" method="POST" enctype="multipart/form-data">

    <s:file label="选择文件：" name="file"/>

    <s:submit value="上传"/>

</s:form>

2)    接收上传请求的Action

public class FileUploadAction extends ActionSupport {

    // 上传文件对象，该属性必须符合特定规范，即与表单提交name相同

    private File file;

    // 上传文件的MIME类型

    private String fileContentType;

    // 上传文件的文件名

    private String fileFileName;

    // 上传至指定路径,该参数值由struts.xml配置

    private String uploadPath;

    

    // 此处省略各Field的getter、setter方法

 

    public String upload() throws Exception {

       OutputStream os = null;

       InputStream is = null;

       try {

           os = new FileOutputStream(uploadPath+fileFileName);

           is = new FileInputStream(file);

           byte[] buffer = new byte[1024];

           int len = -1;

           while ((len = is.read(buffer)) != -1) {

              os.write(buffer, 0, len);

           }

        } catch (Exception e) {

           e.printStackTrace();

        }finally{

           if(os!=null)

               os.close();

           if(is!=null)

               is.close();

           if(file!=null)

              is.close();

       }

       return SUCCESS;

    }

}

3)    struts.xml配置文件

<package name="default" namespace="/" extends="struts-default">

    <action name="upload" class="cn.itcast.user.action.FileUploadAction" method="upload">

       <param name="filePath">d:/</param>

       <result name="input">/jsp/fial/upload_fail.jsp</result>

       <result>/jsp/success/upload_success.jsp</result>

    </action>

</package>

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