上传文件

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package controllers;

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 java.util.Date;
import java.util.Iterator;
import javax.servlet.http.HttpServletRequest;
import org.apache.commons.io.FileUtils;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.multipart.MultipartHttpServletRequest;
import org.springframework.web.multipart.commons.CommonsMultipartFile;
import org.springframework.web.multipart.commons.CommonsMultipartResolver;
@Controller
public class fileController {
/**
* 采用spring提供的上传文件的方法
*
* @author：yxl
* @Title: upLoadFile
* @param @param file
* @param @param request
* @param @throws IllegalStateException
* @param @throws IOException
* @return void
* @date
* @throws
*/
@RequestMapping(value = "/upLoadFile.do", method = RequestMethod.POST)
public void upLoadFile(HttpServletRequest request)
throws IllegalStateException, IOException {
// @RequestParam("file") MultipartFile file,
CommonsMultipartResolver multipartResolver = new CommonsMultipartResolver(
request.getSession().getServletContext());
// 判断 request 是否有文件上传,即多部分请求
if (multipartResolver.isMultipart(request)) {
// 转换成多部分request
MultipartHttpServletRequest multiRequest = (MultipartHttpServletRequest) request;
// 取得request中的所有文件名
Iterator<String> iter = multiRequest.getFileNames();
while (iter.hasNext()) {
// 取得上传文件
MultipartFile f = multiRequest.getFile(iter.next());
if (f != null) {
// 取得当前上传文件的文件名称
String myFileName = f.getOriginalFilename();
// 如果名称不为“”,说明该文件存在，否则说明该文件不存在
if (myFileName.trim() != "") {
// 定义上传路径
String path = "D:\\hzfilms_images\\"
+ myFileName;
File localFile = new File(path);
f.transferTo(localFile);
}
}
}
}
}

/*
* 采用file.Transto 来保存上传的文件
*/
@RequestMapping("fileUpload2")
public String fileUpload2(@RequestParam("file") CommonsMultipartFile file) throws IOException {
long startTime=System.currentTimeMillis();
System.out.println("fileName："+file.getOriginalFilename());
String path="D:\\hzfilms_images\\"+new Date().getTime()+file.getOriginalFilename();
File newFile=new File(path);
//通过CommonsMultipartFile的方法直接写文件（注意这个时候）
file.transferTo(newFile);
long endTime=System.currentTimeMillis();
System.out.println("方法二的运行时间："+String.valueOf(endTime-startTime)+"ms");
return "/success";
}

/*
* 通过流的方式上传文件
* @RequestParam("file") 将name=file控件得到的文件封装成CommonsMultipartFile 对象
*/
@RequestMapping("fileUpload")
public String fileUpload(@RequestParam("file") CommonsMultipartFile file) throws IOException {

//用来检测程序运行时间
long startTime=System.currentTimeMillis();
System.out.println("fileName："+file.getOriginalFilename());

try {
//获取输出流
OutputStream os=new FileOutputStream("D:\\hzfilms_images\\" +new Date().getTime()+file.getOriginalFilename());
//获取输入流 CommonsMultipartFile 中可以直接得到文件的流
InputStream is=file.getInputStream();
int temp;
//一个一个字节的读取并写入
while((temp=is.read())!=(-1))
{
os.write(temp);
}
os.flush();
os.close();
is.close();

} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
long endTime=System.currentTimeMillis();
System.out.println("方法一的运行时间："+String.valueOf(endTime-startTime)+"ms");
return "/success";
}

}

springxml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd">


<context:annotation-config />
<mvc:annotation-driven />
<context:component-scan base-package="controllers" />


<bean id="mappingJacksonHttpMessageConverter"
class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
<property name="supportedMediaTypes">
<list>
<value>text/html;charset=utf-8</value>
</list>
</property>
</bean>



<bean
class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
<property name="messageConverters">
<list>
<ref bean="mappingJacksonHttpMessageConverter" />
</list>
</property>
</bean>


<bean id="multipartResolver"
class="org.springframework.web.multipart.commons.CommonsMultipartResolver" >

<property name="maxUploadSize" value="104857600"></property>
<property name="defaultEncoding" value="utf-8"></property>
</bean>
</beans>

index.html

<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
</head>
<body>
<form action="./upLoadFile.do" method="post" enctype="multipart/form-data">
选择文件：<input type="file" name="file"/>
<input type="submit" value="提交"/>
</form>
<form name="Form2" action="/SpringMVC006/fileUpload2" method="post" enctype="multipart/form-data">
<h1>采用multipart提供的file.transfer方法上传文件</h1>
<input type="file" name="file">
<input type="submit" value="upload"/>
</form>
<form name="serForm" action="/SpringMVC006/fileUpload" method="post" enctype="multipart/form-data">
<h1>采用流的方式上传文件</h1>
<input type="file" name="file">
<input type="submit" value="upload"/>
</form>
</body>
</html>

web.xml

<?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" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.5">
<display-name>TestUpload</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>
<filter>
<description>字符集过滤器</description>
<filter-name>encodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<description>字符集编码</description>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<servlet>
<servlet-name>springMVC</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring.xml</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>springMVC</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
<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>
</web-app>

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