[置顶] struts1进行单文件上传
首先你需要搭建一个struts1的完整开发环境，在lib目录下导入struts1的核心jar包
![[置顶] struts1进行单文件上传_第1张图片](http://img.e-com-net.com/image/info5/6150882c8d9748b2b7e1d8d373d8ab82.png)
然后在WEB-INF目录下建立一个struts-config.xml 文件
<?xml version="1.0" encoding="ISO-8859-1" ?>
<!DOCTYPE struts-config PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 1.3//EN"
"http://struts.apache.org/dtds/struts-config_1_3.dtd">
<struts-config>
<form-beans>
<form-bean name="UploadFileBean" type="cn.lfd.web.formbean.UploadFileBean"></form-bean>
</form-beans>
<span style="white-space:pre"> </span><action-mappings>
<action path="/UploadFileUI" forward="/WEB-INF/jsp/upload.jsp"></action>
<action path="/UploadAction"
type="cn.lfd.web.action.UploadAction"
name="UploadFileBean"
validate="false"
scope="request"
></action>
<span style="white-space:pre"> </span></action-mappings>
</struts-config>
然后新建一个上传的jsp页面，设置好form表单的各种属性，enctype="multipart/form-data"一定不能少哦
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>上传页面</title>
</head>
<body>
<form action="${pageContext.request.contextPath }/UploadAction.do" method="post" enctype="multipart/form-data">
上传用户:<input name="username" type="text"/><br/>
上传文件:<input name="formfile" type="file"><br/>
<input type="submit" value="提交">
</form>
</body>
</html>
建立好一个formbean保存上传的文件和各个字段，struts1会自动把表单的数据封装到改formbean中
package cn.lfd.web.formbean;
import org.apache.struts.action.ActionForm;
import org.apache.struts.upload.FormFile;
public class UploadFileBean extends ActionForm {
private String username;
private FormFile formfile;
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public FormFile getFormfile() {
return formfile;
}
public void setFormfile(FormFile formfile) {
this.formfile = formfile;
}
}
表单提交后跳转到一个UploadAction中进行处理，struts1会把表单数据封装到ActionForm中
package cn.lfd.web.action;
import java.io.FileOutputStream;
import java.io.InputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.upload.FormFile;
import cn.lfd.web.formbean.UploadFileBean;
/*
* 处理上传请求的action
*/
public class UploadAction extends Action {
@Override
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception {
UploadFileBean bean = (UploadFileBean) form;
//取出bean中封装的上传数据
FormFile formfile = bean.getFormfile();
InputStream in = formfile.getInputStream();
//new出一个输出流把文件数据写到d盘
FileOutputStream out = new FileOutputStream("d:\\"+formfile.getFileName());
byte[] buff = new byte[1024];
int len = 0;
while(-1!=(len=in.read(buff))) {
out.write(buff, 0, len);
}
in.close();
out.close();
return null;
}
}