jsp\struts1.2\struts2 中文件上传（转）
2014-03-14 22:18
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jsp\struts1.2\struts2 中文件上传
a.在jsp中简单利用Commons-fileupload组件实现
b.在struts1.2中实现
c.在sturts2中实现
现在把Code与大家分享一下..
注:此为三个简单Demo,仅供练习用,并没有做太多上传限制
如有兴趣可以自行查看相关文档说明
一.在JSP环境中利用Commons-fileupload组件实现文件上传
1.页面upload.jsp清单如下:
注意:在上传表单中,既有普通文本域也有文件上传域
2.FileUplaodServlet.java清单如下:
3.web.xml清单如下:
二.在strut1.2中实现
1.上传页面file.jsp 清单如下:
2.FileAtion.java的清单如下:
3.FileForm.java的清单如下:
4.struts-config.xml的清单如下:
5.web.xml代码清单如下:
三.在struts2中实现(以图片上传为例)
1.FileUpload.jsp代码清单如下:
2.ShowUpload.jsp的功能清单如下:
3.FileUploadAction.java的代码清单如下 :
注:此时仅为方便实现Action所以继承ActionSupport,并Overrider execute()方法
在struts2中任何一个POJO都可以作为Action
4.struts.xml清单如下:
5.web.xml清单如下:
a.在jsp中简单利用Commons-fileupload组件实现
b.在struts1.2中实现
c.在sturts2中实现
现在把Code与大家分享一下..
注:此为三个简单Demo,仅供练习用,并没有做太多上传限制
如有兴趣可以自行查看相关文档说明
一.在JSP环境中利用Commons-fileupload组件实现文件上传
1.页面upload.jsp清单如下:
2.FileUplaodServlet.java清单如下:
Java代码 <?xml version="1.0" encoding="UTF-8"?> <web-app version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"> <servlet> <servlet-name>UploadFileServlet</servlet-name> <servlet-class> org.chris.fileupload.FileUplaodServlet </servlet-class> </servlet> <servlet-mapping> <servlet-name>UploadFileServlet</servlet-name> <url-pattern>/UploadFile</url-pattern> </servlet-mapping> <welcome-file-list> <welcome-file>/Index.jsp</welcome-file> </welcome-file-list> </web-app>
二.在strut1.2中实现
1.上传页面file.jsp 清单如下:
Java代码 <%@ page language="java" pageEncoding="ISO-8859-1"%> <%@ taglib uri="http://jakarta.apache.org/struts/tags-bean" prefix="bean"%> <%@ taglib uri="http://jakarta.apache.org/struts/tags-html" prefix="html"%> <html> <head> <title>JSP for FileForm form</title> </head> <body> <html:form action="/file" enctype="multipart/form-data"> <html:file property="file1"></html:file> <html:submit/><html:cancel/> </html:form> </body> </html>
2.FileAtion.java的清单如下:
Java代码
/*
* Generated by MyEclipse Struts
* Template path: templates/java/JavaClass.vtl
*/
package action;
import java.io.*;
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 form.FileForm;
/**
* @author Chris
* Creation date: 6-27-2008
*
* XDoclet definition:
* @struts.action path="/file" name="fileForm" input="/file.jsp"
*/
public class FileAction extends Action {
/*
* Generated Methods
*/
/**
* Method execute
* @param mapping
* @param form
* @param request
* @param response
* @return ActionForward
*/
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {
FileForm fileForm = (FileForm) form;
FormFile file1=fileForm.getFile1();
if(file1!=null){
//上传路径
String dir=request.getSession(true).getServletContext().getRealPath("/upload");
OutputStream fos=null;
try {
fos=new FileOutputStream(dir+"/"+file1.getFileName());
fos.write(file1.getFileData(),0,file1.getFileSize());
fos.flush();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}finally{
try{
fos.close();
}catch(Exception e){}
}
}
//页面跳转
return mapping.findForward("success");
}
}3.FileForm.java的清单如下:
package form;
import javax.servlet.http.HttpServletRequest;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.upload.FormFile;
/**
* @author Chris
* Creation date: 6-27-2008
*
* XDoclet definition:
* @struts.form name="fileForm"
*/
public class FileForm extends ActionForm {
/*
* Generated Methods
*/
private FormFile file1;
/**
* Method validate
* @param mapping
* @param request
* @return ActionErrors
*/
public ActionErrors validate(ActionMapping mapping,
HttpServletRequest request) {
// TODO Auto-generated method stub
return null;
}
/**
* Method reset
* @param mapping
* @param request
*/
public void reset(ActionMapping mapping, HttpServletRequest request) {
// TODO Auto-generated method stub
}
public FormFile getFile1() {
return file1;
}
public void setFile1(FormFile file1) {
this.file1 = file1;
}
}4.struts-config.xml的清单如下:
Java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="form.FileForm" /> </form-beans> <global-exceptions /> <global-forwards /> <action-mappings > <action attribute="fileForm" input="/file.jsp" name="fileForm" path="/file" type="action.FileAction" validate="false"> <forward name="success" path="/file.jsp"></forward> </action> </action-mappings> <message-resources parameter="ApplicationResources" /> </struts-config>
5.web.xml代码清单如下:
<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="2.4" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.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> </web-app>
三.在struts2中实现(以图片上传为例)
1.FileUpload.jsp代码清单如下:
Java代码 <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <%@ taglib prefix="s" uri="/struts-tags" %> <html> <head> <title>The FileUplaodDemo In Struts2</title> </head> <body> <s:form action="fileUpload.action" method="POST" enctype="multipart/form-data"> <s:file name="myFile" label="MyFile" ></s:file> <s:textfield name="caption" label="Caption"></s:textfield> <s:submit label="提交"></s:submit> </s:form> </body> </html>
2.ShowUpload.jsp的功能清单如下:
Java代码 <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <%@ taglib prefix="s" uri="/struts-tags" %> <html> <head> <title>ShowUpload</title> </head> <body> <div style ="padding: 3px; border: solid 1px #cccccc; text-align: center" > <img src ='UploadImages/<s:property value ="imageFileName"/> '/> <br /> <s:property value ="caption"/> </div > </body> </html>
3.FileUploadAction.java的代码清单如下 :
Java代码
package com.chris;
import java.io.*;
import java.util.Date;
import org.apache.struts2.ServletActionContext;
import com.opensymphony.xwork2.ActionSupport;
public class FileUploadAction extends ActionSupport{
private static final long serialVersionUID = 572146812454l ;
private static final int BUFFER_SIZE = 16 * 1024 ;
//注意，文件上传时<s:file/>同时与myFile，myFileContentType,myFileFileName绑定
//所以同时要提供myFileContentType,myFileFileName的set方法
private File myFile; //上传文件
private String contentType;//上传文件类型
private String fileName; //上传文件名
private String imageFileName;
private String caption;//文件说明，与页面属性绑定
public void setMyFileContentType(String contentType) {
System.out.println("contentType : " + contentType);
this .contentType = contentType;
}
public void setMyFileFileName(String fileName) {
System.out.println("FileName : " + fileName);
this .fileName = fileName;
}
public void setMyFile(File myFile) {
this .myFile = myFile;
}
public String getImageFileName() {
return imageFileName;
}
public String getCaption() {
return caption;
}
public void setCaption(String caption) {
this .caption = caption;
}
private static void copy(File src, File dst) {
try {
InputStream in = null ;
OutputStream out = null ;
try {
in = new BufferedInputStream( new FileInputStream(src), BUFFER_SIZE);
out = new BufferedOutputStream( new FileOutputStream(dst), BUFFER_SIZE);
byte [] buffer = new byte [BUFFER_SIZE];
while (in.read(buffer) > 0 ) {
out.write(buffer);
}
} finally {
if ( null != in) {
in.close();
}
if ( null != out) {
out.close();
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
private static String getExtention(String fileName) {
int pos = fileName.lastIndexOf(".");
return fileName.substring(pos);
}
@Override
public String execute() {
imageFileName = new Date().getTime() + getExtention(fileName);
File imageFile = new File(ServletActionContext.getServletContext().getRealPath("/UploadImages" ) + "/" + imageFileName);
copy(myFile, imageFile);
return SUCCESS;
}
}注:此时仅为方便实现Action所以继承ActionSupport,并Overrider execute()方法
在struts2中任何一个POJO都可以作为Action
4.struts.xml清单如下:
Java代码 <?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN" "http://struts.apache.org/dtds/struts-2.0.dtd"> <struts> <package name="example" namespace="/" extends="struts-default"> <action name="fileUpload" class="com.chris.FileUploadAction"> <interceptor-ref name="fileUploadStack"/> <result>/ShowUpload.jsp</result> </action> </package> </struts>
5.web.xml清单如下:
Java代码 <?xml version="1.0" encoding="UTF-8"?> <web-app version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"> <filter > <filter-name > struts-cleanup </filter-name > <filter-class > org.apache.struts2.dispatcher.ActionContextCleanUp </filter-class > </filter > <filter-mapping > <filter-name > struts-cleanup </filter-name > <url-pattern > /* </url-pattern > </filter-mapping > <filter> <filter-name>struts2</filter-name> <filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class> </filter> <filter-mapping> <filter-name>struts2</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <welcome-file-list> <welcome-file>Index.jsp</welcome-file> </welcome-file-list> </web-app>
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