从web.xml开始,申明:现在只做了可以上传了,还有细节没有做好。
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
id="WebApp_ID" version="3.0">
<display-name>springMVC</display-name>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>
<servlet>
<servlet-name>spring</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>spring</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
</web-app>
相应要在web-inf/spring-servlet.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN 2.0//EN"
"http://www.springframework.org/dtd/spring-beans-2.0.dtd">
<beans>
<!-- lets use the Commons-based implementation of the MultipartResolver
interface -->
<bean id="multipartResolver"
class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<property name="maxUploadSize" value="10000000000"></property>
</bean>
<bean id="urlMapping"
class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
<property name="mappings">
<value>
/upload.do=fileUploadController
</value>
</property>
</bean>
<bean id="fileUploadController" class="com.spring.mvc.controller.FileUploadController">
<property name="commandClass" value="com.spring.mvc.controller.FileUploadBean">
</property>
<property name="formView" value="tranf.jsp" />
<property name="successView" value="success.jsp" />
</bean>
</beans>
formView:form视图;
successView:成功视图;
fileUploadController :控制器;
package com.spring.mvc.controller;
import java.io.File;
import java.io.IOException;
import java.util.Iterator;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.util.FileCopyUtils;
import org.springframework.validation.BindException;
import org.springframework.web.bind.ServletRequestDataBinder;
import org.springframework.web.multipart.MultipartHttpServletRequest;
import org.springframework.web.multipart.commons.CommonsMultipartFile;
import org.springframework.web.multipart.support.ByteArrayMultipartFileEditor;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.SimpleFormController;
@SuppressWarnings("deprecation")
public class FileUploadController extends SimpleFormController {
static Log log = LogFactory.getLog(FileUploadController.class);
private String uploadDir;
/**
* well, let's do nothing with the bean for now and return cast the bean
* let's see if there's content there
*/
protected ModelAndView onSubmit(HttpServletRequest request,
HttpServletResponse response, Object command, BindException errors)
throws ServletException, IOException, Exception {
FileUploadBean bean = (FileUploadBean) command;
byte[] bytes = bean.getFile();
MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request;
@SuppressWarnings("rawtypes")
Iterator iter = multipartRequest.getFileNames();
while (iter.hasNext()) {
String fileName = (String) iter.next();
CommonsMultipartFile file = (CommonsMultipartFile) multipartRequest
.getFile(fileName);
if (file.getSize() != 0) {
String uploadDir = this.getUploadDir();
File dirPath = new File(uploadDir);
if (!dirPath.exists()) {
dirPath.mkdirs();
}
String sep = System.getProperty("file.separator");
if (log.isDebugEnabled()) {
log.debug("uploading to: " + uploadDir + sep
+ file.getOriginalFilename());
}
File uploadedFile = new File(uploadDir + sep
+ file.getOriginalFilename());
FileCopyUtils.copy(bytes, uploadedFile);
System.out.println("********************************");
System.out.println(uploadedFile.getAbsolutePath());
System.out.println(bytes.length);
}
}
return super.onSubmit(request, response, command, errors);
}
/**
* to actually be able to convert Multipart instance to byte[] we have to
* register a custom editor now Spring knows how to handle multipart object
* and convert them
*/
protected void initBinder(HttpServletRequest request,
ServletRequestDataBinder binder) throws ServletException {
binder.registerCustomEditor(byte[].class,
new ByteArrayMultipartFileEditor());
}
public String getUploadDir() {
uploadDir = "E:/logs";
return uploadDir;
}
public void setUploadDir(String uploadDir) {
this.uploadDir = uploadDir;
}
}
上传jsp:
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<h1>please select a file</h1>
<form method="post" action="upload.do" enctype="multipart/form-data">
<input type="file" name="file" /> <input type="submit" />
</form>
</body>
</html>
加入的jar包有:
commons-logging-api-1.1.jar
org.springframework.web.servlet-3.0.5.RELEASE.jarcommons-logging-1.0.4.jar
org.springframework.web-3.0.5.RELEASE.jar