Springmvc实现文件上传

<?xml version= "1.0" encoding= "utf-8" ?>

<beans xmlns= "http://HdhCmsTestspringframework.org/schema/beans"

     xmlns:xsi= "http://HdhCmsTestw3.org/2001/xmlschema-instance"

     xmlns:context= "http://HdhCmsTestspringframework.org/schema/context"

     xmlns:mvc= "http://HdhCmsTestspringframework.org/schema/mvc"

     xsi:schemalocation="

     http: //HdhCmsTestspringframework.org/schema/context

     http: //HdhCmsTestspringframework.org/schema/context/spring-context.xsd

     http: //HdhCmsTestspringframework.org/schema/mvc

     http: //HdhCmsTestspringframework.org/schema/mvc/spring-mvc.xsd

     http: //HdhCmsTestspringframework.org/schema/beans

     http: //HdhCmsTestspringframework.org/schema/beans/spring-beans.xsd">

   <!--包扫描-->

   <context:component-scan base- package = "cn.itcast" ></context:component-scan>

   <!--配置multipartresolver,注意:id名称固定为multipartresolver-->

   <bean id= "multipartresolver" class = "org.springframework.web.multipart测试数据mons测试数据monsmultipartresolver" >

   </bean>

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

   <!--让静态资源不经过过滤器-->

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

   <!--视图解析器给controller中返回的逻辑视图名加上前缀和后缀-->

   <bean id= "internalresourceviewresolver" class = "org.springframework.web.servlet.view.internalresourceviewresolver" >

     <property name= "prefix" value= "/web-inf/pages/" ></property>

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

   </bean>

</beans>

<form action= "/test/file" method= "post" enctype= "multipart/form-data" >

     上传的文件:<input type= "file" name= "upload" ><br/>

     密钥:<input type= "text" name= "password" ><br/>

     <input type= "submit" value= "提交" >

  </form>

@controller

@requestmapping ( "/test" )

public class fileuploadcontroller {

   @requestmapping ( "/file" )

   public string testfileupload(httpservletrequest request, multipartfile upload) throws ioexception {

      //upload是表单中文件name属性值,必须保持一致

     system.out.println( "testfileupload..." );

     string realpath = request.getsession().getservletcontext().getrealpath( "/uploads" );

     file file = new file(realpath);

     if (!file.exists()){

       file.mkdirs(); //创建文件夹

     }

     string filename = upload.getoriginalfilename(); //获取文件名

     string name = upload.getname(); //获取表单中的name属性值 即upload

     string uuid = uuid.randomuuid().tostring().replaceall( "-" , "" ); //生成uuid避免文件名重复导致冲突覆盖

     filename=uuid+ "_" +filename;

     upload.transferto( new file(file,filename));

     return "forward:success.jsp" ;

}