Struts1 上传文件

来源：互联网发布：linux常用命令全集编辑：程序博客网时间：2024/05/16 15:09

利用Struts上传文件是非常方便的，与smartUpload相比最大的优点在于它可以上传很大的文件，测试的时候两百多兆是可以的，四百多就不行了，它应该是有个配置，不过现在还没有搞明白。先贴一贴昨天晚上写得代码吧。
首先是上传界面的代码：

Html代码

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@ taglib uri="http://jakarta.apache.org/struts/tags-html" prefix="html"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<html:html>
<head>
<title>Struts上传文件</title>
</head>
<body>
<html:form action="upload" enctype="multipart/form-data" method="post">
<table>
<tr>
<td>
<div>
<html:file property="file" size="30"></html:file>
</div>
</td>
</tr>
<tr>
<td>
<div>
<html:submit property="upload" value="上传"></html:submit>
</div>
</td>
</tr>
</table>
</html:form>
</body>
</html:html>

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%><%@ taglib uri="http://jakarta.apache.org/struts/tags-html" prefix="html"%><%String path = request.getContextPath();String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";%><html:html><head><title>Struts上传文件</title></head><body><!-- 这里需要注意的是method一定要设成post,还要设置enctype为multipart/form-data--><html:form action="upload" enctype="multipart/form-data" method="post"><table><tr><td><div><html:file property="file" size="30"></html:file></div></td></tr><tr><td><div><html:submit property="upload" value="上传"></html:submit></div></td></tr></table></html:form></body></html:html>

然后是页面对应的ActionForm，你可以写成一个普通的ActionForm，也可以写成一个动态的ActionForm,这里我写成了一个普通的ActionForm
UploadForm:

Java代码

package forms;
import org.apache.struts.action.ActionForm;
import org.apache.struts.upload.FormFile;
public class UploadForm extends ActionForm {
private String filename;
private FormFile file;
public FormFile getFile() {
return file;
}
public void setFile(FormFile file) {
this.file = file;
}
public String getFilename() {
return filename;
}
public void setFilename(String filename) {
this.filename = filename;
}
}

package forms;import org.apache.struts.action.ActionForm;import org.apache.struts.upload.FormFile;public class UploadForm extends ActionForm {private String filename;private FormFile file;public FormFile getFile() {return file;}public void setFile(FormFile file) {this.file = file;}public String getFilename() {return filename;}public void setFilename(String filename) {this.filename = filename;}}

处理业务的Action：
UploadAction:

Java代码

package actions;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
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 forms.UploadForm;
public class UploadAction extends Action {
@Override
public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest req, HttpServletResponse res) throws Exception {
UploadForm uf=(UploadForm)form;
String filename=uf.getFilename();
FormFile file=uf.getFile();
if(file!=null){
System.out.println("我叫"+file.getFileName());
}
//这里需要注意的是request.getRealPath();已经废弃，可以通过
//下面的方法来替代
String path=req.getSession().getServletContext().getRealPath("/");
InputStream in=file.getInputStream();
OutputStream out=new FileOutputStream(path+"/upload/"+file.getFileName());
int read=0;
byte[] buffer=new byte[1024];
while((read=in.read(buffer,0,1024))!=-1){
out.write(buffer, 0, read);
}
in.close();
out.close();
return mapping.findForward("uploadsuc");
}
}

package actions;import java.io.FileOutputStream;import java.io.InputStream;import java.io.OutputStream;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 forms.UploadForm;public class UploadAction extends Action {@Overridepublic ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest req, HttpServletResponse res) throws Exception {UploadForm uf=(UploadForm)form;String filename=uf.getFilename();FormFile file=uf.getFile();if(file!=null){System.out.println("我叫"+file.getFileName());}//这里需要注意的是request.getRealPath();已经废弃，可以通过                //下面的方法来替代String path=req.getSession().getServletContext().getRealPath("/");InputStream in=file.getInputStream();OutputStream out=new FileOutputStream(path+"/upload/"+file.getFileName());int read=0;byte[] buffer=new byte[1024];while((read=in.read(buffer,0,1024))!=-1){out.write(buffer, 0, read);}in.close();out.close();return mapping.findForward("uploadsuc");}}

Struts-config.xml的配置：

Java代码

<form-beans>
<form-bean name="uploadform" type="forms.UploadForm"></form-bean>
</form-beans>
<action path="/upload"
type="actions.UploadAction"
name="uploadform"
input="/test/upload.jsp"
scope="request"
>
<forward name="uploadsuc" path="/test/uploadsuc.jsp"/>
</action>