SpringMVC之文件上传

1.web文件的配置

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">
  
  <!--这个是项目名，需要更改  -->
  <display-name>FileUpload</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>springDispatcherServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            
            <!--spring bean configuration file名需要自己 配置-->
            <param-value>classpath:cont.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <!-- Map all requests to the DispatcherServlet for handling -->
    <servlet-mapping>
        <servlet-name>springDispatcherServlet</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
    
    
    <filter>
        <filter-name>CharacterEncodingFilter</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
        <init-param>
            <param-name>encoding</param-name>
            <param-value>utf-8</param-value>
        </init-param>
    </filter>
 
    <filter-mapping>
        <filter-name>CharacterEncodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
  
      <filter>
        <filter-name>HiddenHttpMethodFilter</filter-name>

        <filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>HiddenHttpMethodFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
  
</web-app>

2.spring bean configuration file文件的配置

<?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: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.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">
    
    <context:component-scan base-package="com.tyd"></context:component-scan>
    
    
    <bean  class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/views/"></property>
        <property name="suffix" value=".jsp"></property>
     
    </bean>
    
    <mvc:default-servlet-handler/>
    <mvc:annotation-driven></mvc:annotation-driven>
    
    <!--一下是配置拦截器请忽略  -->
    <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
            <property name="defaultEncoding" value="utf-8"></property>
            <!-- 以字节为单位 -->
            <property name="maxUploadSize" value="1024000"></property>
    </bean>
    
    <mvc:interceptors>
        <bean class="com.tyd.interceptor.MyInterceptor"></bean>
    </mvc:interceptors>
    
    <mvc:interceptors>
            <bean class="com.tyd.interceptor.Interception2"></bean>
    </mvc:interceptors>
    

</beans>

3.java文件的编写：

@RequestMapping(value="/fileUpload",method=RequestMethod.POST)
    public String testUpload(HttpServletRequest request,@RequestParam(value="desc",required=false) String desc,@RequestParam("picture") CommonsMultipartFile file){
        
        System.out.println(desc);
        System.out.println(file.getOriginalFilename());
        ServletContext servletContext = request.getServletContext();
        
        String realPath = servletContext.getRealPath("/upload");
        System.out.println(realPath);
        File file1 = new File(realPath);
        if(!file1.exists()){
            file1.mkdir();
        }
        OutputStream out;
        InputStream in;
        String prefix = UUID.randomUUID().toString();
        
        prefix = prefix.replace("-","");
        String fileName = prefix+"_"+file.getOriginalFilename();
        System.out.println(fileName);
        
        try {
            out = new FileOutputStream(new File(realPath+"\"+fileName));
            in = file.getInputStream();
            //直接写输入输出流
            byte[] buffer=new byte[1024];
            int ben=0;
            boolean bl=true;
            while(bl){
                ben=in.read(buffer);
                if(ben==-1){
                    bl=false;
                }
                else{
                    out.write(buffer);
                    out.flush();
                }    
            }
            //调用方法写输入输出流
//            IOUtils.copy(in, out);
            out.close();
            in.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return "success";
    
    }

 4.jsp文件编辑

<%@ 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>
<script type="text/javascript" src="js/jquery-1.9.1.min.js"></script>
</head>
<body>
    <form action="${pageContext.request.contextPath}/fileUpload" method="post" enctype="multipart/form-data">
        描述：<input type="text" name="desc"><br>
        file:<input type="file" name="picture"><br>
        <input type="submit" value="提交">
        
    </form>

        
</body>
</html>

 文件下载参照：http://www.cnblogs.com/TYDBLOG/p/7424971.html

文件所需包下载：

4.相关包下载：（导入包时直接将文件复制到WEB-INF/lib文件夹下即可）

链接：http://pan.baidu.com/s/1hrYKLfu

密码：ixgj