文件上传

1.spring-mvc.xml中添加multipartResolver

<?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.xsd

        http://www.springframework.org/schema/mvc

        http://www.springframework.org/schema/mvc/spring-mvc.xsd

        http://www.springframework.org/schema/context

        http://www.springframework.org/schema/context/spring-context.xsd">

    <!-- 使用注解的包，包括子集 -->

    <context:component-scan base-package="com.lidongyang"/>

    <mvc:annotation-driven/>

    <mvc:resources mapping="/resources/**" location="/images/"/>

    <mvc:resources mapping="/resources2/**" location="/css/"/>

    <!-- 视图解析器 -->

    <bean id="viewResolver"

        class="org.springframework.web.servlet.view.InternalResourceViewResolver">

        <property name="prefix" value="/WEB-INF/jsp/" />

        <property name="suffix" value=".jsp"></property>

    </bean>

    <bean id="multipartResolver"

        class="org.springframework.web.multipart.commons.CommonsMultipartResolver">

        <property name="defaultEncoding" value="UTF-8"/> 

        <property name="maxUploadSize" value="10000000"/>

    </bean>

</beans>

2.加入2个jar包

3.写类：

import java.io.File;

import javax.servlet.http.HttpServletRequest;

import org.springframework.stereotype.Controller;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RequestParam;

import org.springframework.web.multipart.MultipartFile;

@Controller

public class FileUploadController {

    @RequestMapping("/upload")

    public String uploadFile(@RequestParam("file1") MultipartFile file1,HttpServletRequest request)throws Exception{

        String filePath=request.getSession.getServletContext().getRealPath("/");

        System.out.println(filePath);

        file1.transferTo(new File(filePath+"upload/"+file1.getOriginalFilename()));

        return "redirect:success.html";

    }

//多文件

    @RequestMapping("/upload2")

    public String uploadFiles(@RequestParam("file") MultipartFile[] files,HttpServletRequest request)throws Exception{

        String filePath=request.getSession().getServletContext().getRealPath("/");

        System.out.println(filePath);

        for(MultipartFile file:files){

            file.transferTo(new File(filePath+"upload/"+file.getOriginalFilename()));           

        }

        return "redirect:success.html";

    }

}