Struts2 文件上传下载

1. 单个文件上传

1 <s:form method="post" action="upload" namespace="/" enctype="multipart/form-data">
2     <s:file name="upload"/>
3     <s:submit/>
4 </s:form>

<action name="upload" class="tonny.study.struts.action.file.FileUploadAction">
    <param name="savePath">F:\</param><!-- 文件保存路径 -->
    <result>/index.jsp</result>
</action>

 1 public class FileUploadAction extends ActionSupport {
 2     private static final long serialVersionUID = 1L;
 3 
 4     private File upload;                 //上传文件页面标签name属性
 5     private String uploadContentType;    //上传文件的类型, 格式固定: name+ContentType
 6     private String uploadFileName;       //上传文件的名称, 格式固定: name+FileName
 7     
 8     private String savePath;             //通过struts.xml配置的保存路径
 9     
10     @Override
11     public String execute() throws Exception {
12         FileOutputStream fos = new FileOutputStream(getSavePath() + getUploadFileName());
13         FileInputStream fis = new FileInputStream(getUpload());
14         
15         byte[] buffer = new byte[1024];
16         int len = 0;
17         while ((len = fis.read(buffer)) > 0) {
18             fos.write(buffer, 0, len);
19         }
20         
21         fis.close();
22         fos.close();
23         
24         return SUCCESS;
25     }
26 
27     //省略一堆 getter/setter方法
28 }