本文实例为大家分享了springmvc实现文件上传的具体代码,供大家参考,具体内容如下
1.环境搭建:
在maven的pom.xml文件中导入两个依赖
1).commons-fileupload
2).commons-io
在resources目录下的springmvc.xml文件中配置multipartresolver
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<?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/context
http: //www.springframework.org/schema/context/spring-context.xsd
http: //www.springframework.org/schema/mvc
http: //www.springframework.org/schema/mvc/spring-mvc.xsd
http: //www.springframework.org/schema/beans
http: //www.springframework.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.commons.commonsmultipartresolver" >
</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>
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2.编写前台测试jsp
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<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>
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注意页面三要素:
1).表单提交方式必须为post
2).表单中必须有file域,即type="file"
3).表单中enctype="multipart/form-data"
3.编写后台测试代码
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@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" ;
}
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以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。
原文链接:https://www.cnblogs.com/georgeJavaEE/archive/2018/10/13/9782358.html