MultipartFile(文件的上传)--CommonsMultipartResolver

<?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:mvc="http://www.springframework.org/schema/mvc"
       xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p"
       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">

   <!-- 开启mvc-->
    <mvc:annotation-driven/>

    <!-- 配置扫描发现所有具有 @Controller 注解的类，加载到容器 -->
    <context:component-scan base-package="text1"/>


    <bean id="view" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/view/" />
        <property name="suffix" value=".jsp"/>
    </bean>


    <!--1 CommonsMultipartResolver
    第一个需要使用 Apache 的 commons-fileupload 等 jar 包支持，
    但它能在比较旧的 servlet 版本中使用-->

    <!-- SpringMVC上传文件时，需要配置MultipartResolver处理器 -->
    <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
        <property name="defaultEncoding" value="utf-8" />
        <property name="maxUploadSize" value="10485760000" />
        <property name="maxInMemorySize" value="40960" />
    </bean>



</beans>

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
         version="3.1">

    <servlet>
        <servlet-name>mvc</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:Spring_mvc.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>


    

    </servlet>
    
    <servlet-mapping>
        <servlet-name>mvc</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
</web-app>

package text1;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.http.HttpServletRequest;
import java.io.File;
import java.io.IOException;

@Controller
@RequestMapping("/create")
public class imgTest {

@Autowired
private HttpServletRequest request;


    @RequestMapping("/jq")
    public String jq() {
        System.out.println("oooo");
        return "index";
    }

    @RequestMapping("/upload")
    public String upload(MultipartFile[] mfile) throws IOException {

        if (mfile !=null && mfile.length>0) {
            for (int i = 0;i<mfile.length;i++){
                long start = System.currentTimeMillis();
                System.out.println("-------------------------------------------------");
                System.out.println("获取文件流"+mfile[i].getInputStream());
                System.out.println("获取文件的字节大小【byte】"+mfile[i].getSize());
                System.out.println("文件类型"+mfile[i].getContentType());
                System.out.println("获取文件数据"+mfile[i].getBytes());
                System.out.println("文件名字"+mfile[i].getName());
                System.out.println("获取上传文件的原名"+mfile[i].getOriginalFilename());

                System.out.println("-------------------------------------------------");

                try {
                    String filePath = request.getSession().getServletContext()
                            .getRealPath("/") + "assets/" +start+ mfile[i].getOriginalFilename();

                    //转存文件

                    mfile[i].transferTo(new File(filePath));
                }catch (Exception e){
                    e.printStackTrace();
                }

                //mfile[i].transferTo(new File("D:/ideas/"+mfile[i].getOriginalFilename()+ mfile[i].getOriginalFilename().substring(
                     //   mfile[i].getOriginalFilename().lastIndexOf("."))));
                // System.out.println(mfile.getOriginalFilename());
              //  mfile[i].transferTo(new File("/assets" + mfile[i].getOriginalFilename()));


            } return "cg";

        } else {
            System.out.println("失败");
            return "sb";
        }
    }
}

<%@ taglib prefix="form" uri="http://www.springframework.org/tags/form" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>

    <title>Title</title>
</head>
<body>
<form:form action="/create/upload" enctype="multipart/form-data">
    <input type="file" name="mfile" id="img" /><br>
    <input type="file" name="mfile"  id="img2"/>
    <%--<img src="#" id="ser" >--%>
    <input type="submit" value="上传图片" />
</form:form>

</body>
</html>