java 文件上传 struts2.0实现

时间:2021-07-03 03:55:32

1. web.xml  写全文拦截器

WEBROOT--- WEB-INF ---- WEB.XML

<filter>
<filter-name>Struts2</filter-name>
<filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>Struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>

2.写个文件上传页面

WEBROOT--E文件夹下----- upload.jsp

  <body>
<form action="${pageContext.request.contextPath }/fileuploadaction" method="post" enctype="multipart/form-data">
用户名:
<input type="text" name="username"><br/>
文件:
<input type="file" name="file1"><br/>
<input type="submit" value="上传">
</form>
</body>

 

3. 项目文件下     struts.xml

<struts>

<!-- 二、总配置文件:引入其他所有配置文件 -->


<include file="cn/itcast/e_fileupload/upload.xml"></include>

</struts>

 

4.  项目src下   建立包: cn.itcast.e_fileupload      下 新建  upload.xml

  

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
"http://struts.apache.org/dtds/struts-2.3.dtd">
<struts>
<package name="upload_" namespace="/" extends="struts-default" abstract="false">
<action name="fileuploadaction" class="cn.itcast.e_fileupload.fileupload" >
<result name="success">/e/success.jsp</result>
</action>
</package>
</struts>

 

 

5. cn.itcast.e_fileupload 下新建 fileupload.java

package cn.itcast.e_fileupload;

import java.io.File;

import org.apache.commons.io.FileUtils;
import org.apache.struts2.ServletActionContext;

import com.opensymphony.xwork2.ActionSupport;

public class fileupload extends ActionSupport{
private File file1;
private String file1FileName; //该变量 固定格式 "file1" + FileName(注意大小写)
private String file1ContextType; //该变量 固定格式
public void setFile1(File file1) {
this.file1 = file1;
}
public void setFile1filename(String file1FileName) {
this.file1FileName = file1FileName;
}
public void setFile1contexttype(String file1ContextType) {
this.file1ContextType = file1ContextType;
}
@Override
public String execute() throws Exception {
String path
=ServletActionContext.getServletContext().getRealPath("/upload");
File desfile
=new File(path,file1FileName);
FileUtils.copyFile(file1, desfile);
return SUCCESS;
}

}