Struts2文件上传

单文件上传（关键代码）：

表单：

<s:form action="upload" enctype="multipart/form-data" method="post">
<s:file name="upload" label="选择文件"></s:file>
<s:submit value  ="提交"></s:submit>
</s:form>

UploadAction：

private File upload;
private String uploadContentType;
private String uploadFileName;
private String savaPath;
private String title;

getter，setter方法。。。

@Override
public String execute() throws Exception {
//控制台看输出结果
System.out.println("服务器缓存路径："+upload);
System.out.println("文件类型："+uploadContentType);
System.out.println("文件名："+uploadFileName);
System.out.println("根目录："+savaPath);
System.out.println("服务器的文件路径："+this.getSavaPath());
System.out.println("标题："+title);

byte[] buffer = new byte[1024];
@SuppressWarnings("resource")
FileInputStream fis = new FileInputStream(this.getUpload());
FileOutputStream fos = new FileOutputStream(getSavaPath()+"\\"+this.getUploadFileName());
int length = fis.read(buffer);
while(length>0){
fos.write(buffer,0,length);
length = fis.read(buffer);
}
fos.flush();
fis.close();
fos.close();
return SUCCESS;

}

Struts.xml

<!-- 上传的action -->
        <action name="upload" class="com.zhbit.action.UploadAction">
        <param name="savaPath">/upload</param>
        <result name="success">upload_success.jsp</result>

</action>

upload_success.jsp

 您所上传的文件是：<s:property value="uploadFileName"/><br/>
 文件类型：<s:property value="uploadContentType"/><br/>
  图片： <img src="<%=basePath%>/upload/<s:property value='uploadFileName'/>" />