struts1的单文件上传

//action的代码

package com.action;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.actions.DispatchAction;

import com.forms.FileForm;

public class FileAction extends DispatchAction {


public ActionForward upload(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception {
FileForm formFile = (FileForm)form;

String fileName = formFile.getFormFile().getFileName();
int fileSize = formFile.getFormFile().getFileSize();
//千万注意，得到的数据比较大，就会出现错误，因为，字节数组的大小小了
//byte a [] = formFile.getFormFile().getFileData();
//可以用另外一种方法
saveFile(request, formFile, fileName, fileSize);
System.out.println("曹欢");

return null;
}

private void saveFile(HttpServletRequest request, FileForm formFile,
String fileName, int fileSize) throws FileNotFoundException,
IOException {
if(!"".equals(formFile) && fileSize != 0)
{
InputStream iStream = formFile.getFormFile().getInputStream();
String path = request.getSession().getServletContext().getRealPath("/images");
//这是解决文件名乱码的问题
String fileName1 = new String(fileName.getBytes("GBK"),"UTF-8");
File file = new File(path, fileName1);
// file.createNewFile();
OutputStream oStream = new FileOutputStream(file);
byte[] b = new byte[1024];
int size = iStream.read(b);
while (size>0) {
oStream.write(b,0,size);
size = iStream.read(b);
}
iStream.close();
oStream.close();
}
}

}

//form的代码

package com.forms;

import java.io.Serializable;

import org.apache.struts.action.ActionForm;
import org.apache.struts.upload.FormFile;

public class FileForm extends ActionForm implements Serializable{

private FormFile formFile;

public FormFile getFormFile() {
return formFile;
}

public void setFormFile(FormFile formFile) {
this.formFile = formFile;
}

}

//filter的代码

package com.filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

public class EncodingFilter implements Filter {

public void destroy() {
// TODO Auto-generated method stub

}

public void doFilter(ServletRequest request, ServletResponse arg1,
FilterChain arg2) throws IOException, ServletException {
request.setCharacterEncoding("utf-8");
arg2.doFilter(request, arg1);
}

public void init(FilterConfig arg0) throws ServletException {
// TODO Auto-generated method stub

}

}

//WEB-INF下的struts-config.xml的代码

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.2//EN" "http://struts.apache.org/dtds/struts-config_1_2.dtd">

<struts-config>
<data-sources />
<form-beans>
<form-bean name="fileForm" type="com.forms.FileForm"></form-bean>
</form-beans>
<global-exceptions />
<global-forwards />
<action-mappings>
<action path="/test" name="fileForm" parameter="p" input="" attribute="fileForm" scope="session" validate="false" type="com.action.FileAction"></action>
</action-mappings>
<message-resources parameter="com.yourcompany.struts.ApplicationResources" />
</struts-config>

//web.xml的代码

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="2.5" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<servlet>
<servlet-name>action</servlet-name>
<servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
<init-param>
<param-name>config</param-name>
<param-value>/WEB-INF/struts-config.xml</param-value>
</init-param>
<init-param>
<param-name>debug</param-name>
<param-value>3</param-value>
</init-param>
<init-param>
<param-name>detail</param-name>
<param-value>3</param-value>
</init-param>
<load-on-startup>0</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>action</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<filter>
<filter-name>xxx</filter-name>
<filter-class>com.filter.EncodingFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>xxx</filter-name>
<servlet-name>action</servlet-name>

</filter-mapping>
</web-app>