SpringMvc 文件上传

commons-fileupload.jar、commons-io.jar

springmvc.xml　　

<?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:aop="http://www.springframework.org/schema/aop"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd
        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-4.3.xsd
        http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd">

    <!-- 扫描 有注解的包 -->
    <context:component-scan base-package="handler"></context:component-scan>

    <!--配置视图解析器(InternalResourceViewResolver)  -->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/views/"></property>
        <property name="suffix" value=".jsp"></property>
    </bean>

    <!--view-name会被视图解析器 加上前缀、后缀  -->
    <mvc:view-controller path="handler/testMvcViewController" view-name="success"/>

    <!-- 该注解 会让 springmvc： 接收一个请求，并且该请求 没有对应的@requestmapping时，将该请求 交给服务器默认的servlet去处理（直接访问）  -->
    <mvc:default-servlet-handler></mvc:default-servlet-handler>


    <!-- 1将 自定义转换器 纳入SpringIOC容器 -->
    <bean id="myConverter" class="converter.MyConverter"></bean>

    <!-- 2将myConverter再纳入 SpringMVC提供的转换器Bean
    <bean id="conversionService"  class="org.springframework.context.support.ConversionServiceFactoryBean">
        <property name="converters">
            <set>
                <ref bean="myConverter"/>
            </set>
        </property>
    </bean>
     -->

    <!-- 3将conversionService注册到annotation-driven中 -->
    <!--此配置是SpringMVC的基础配置，很功能都需要通过该注解来协调  -->
    <mvc:annotation-driven conversion-service="conversionService"></mvc:annotation-driven>

    <!-- 配置 数据格式化 注解 所依赖的bean FormattingConversionServiceFactoryBean:既可以实现格式化、又可以实现类型转换 -->
    <bean id="conversionService" class="org.springframework.format.support.FormattingConversionServiceFactoryBean">
        <property name="converters">
            <set>
                <ref bean="myConverter"/>
            </set>
        </property>
    </bean>

    <!-- 配置CommonsMultipartResolver，用于实现文件上传 将其加入SpringIOC容器.
        springIoc容器在初始化时，会自动寻找一个Id="multipartResolver"的bean，并将其加入Ioc容器 -->
    <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
        <property name="defaultEncoding" value="UTF-8"></property>
        <!-- 上传单个文件的最大值，单位Byte;如果-1，表示无限制 -->
        <property name="maxUploadSize"  value="104857600"></property>
    </bean>

</beans>

testUpload

    @RequestMapping("testUpload")
    public String testUpload(MultipartFile file, String desc) throws IOException {
        System.out.println("文件描述信息：" + desc);
        InputStream inputStream = file.getInputStream();
        String fileName = file.getOriginalFilename();
        String path = "E:\0JAVA\JavaFile\" + fileName;
        OutputStream outputStream = new FileOutputStream(path);
        int len;
        byte[] bytes = new byte[1024];
        while ((len = inputStream.read(bytes)) != -1) {
            outputStream.write(bytes, 0, len);
        }
        inputStream.close();
        outputStream.close();
        System.out.println(555555);
        return "success";
    }

 index.jsp

<form action="handler/testUpload" method="post" enctype="multipart/form-data">
    <input type="file" name="file"> <br>
    <input type="text" name="desc" value="描述"> <br>
    <input type="submit" value="上传">    <br>
</form>