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> |
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> |
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";} |
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
