本文實(shí)例為大家分享了springmvc實(shí)現(xiàn)文件上傳的具體代碼，供大家參考，具體內(nèi)容如下
1.環(huán)境搭建:
在maven的pom.xml文件中導(dǎo)入兩個(gè)依賴
1).commons-fileupload
2).commons-io
在resources目錄下的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"> <!--包掃描--> <context:component-scan base-package="cn.itcast"></context:component-scan> <!--配置multipartresolver,注意:id名稱固定為multipartresolver--> <bean id="multipartresolver" class="org.springframework.web.multipart.commons.commonsmultipartresolver"> </bean> <mvc:annotation-driven ></mvc:annotation-driven> <!--讓靜態(tài)資源不經(jīng)過過濾器--> <mvc:resources mapping="/js/**" location="/js/"></mvc:resources> <!--視圖解析器給controller中返回的邏輯視圖名加上前綴和后綴--> <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.編寫前臺測試jsp
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<form action="/test/file" method="post" enctype="multipart/form-data"> 上傳的文件:<input type="file" name="upload"><br/> 密鑰:<input type="text" name="password"><br/> <input type="submit" value="提交"> </form> |
注意頁面三要素:
1).表單提交方式必須為post
2).表單中必須有file域,即type="file"
3).表單中enctype="multipart/form-data"
3.編寫后臺測試代碼
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@controller@requestmapping("/test")public class fileuploadcontroller { @requestmapping("/file") public string testfileupload(httpservletrequest request, multipartfile upload) throws ioexception { //upload是表單中文件name屬性值,必須保持一致 system.out.println("testfileupload..."); string realpath = request.getsession().getservletcontext().getrealpath("/uploads"); file file = new file(realpath); if(!file.exists()){ file.mkdirs();//創(chuàng)建文件夾 } string filename = upload.getoriginalfilename(); //獲取文件名 string name = upload.getname();//獲取表單中的name屬性值 即upload string uuid = uuid.randomuuid().tostring().replaceall("-", "");//生成uuid避免文件名重復(fù)導(dǎo)致沖突覆蓋 filename=uuid+"_"+filename; upload.transferto(new file(file,filename)); return "forward:success.jsp";} |
以上就是本文的全部內(nèi)容，希望對大家的學(xué)習(xí)有所幫助，也希望大家多多支持服務(wù)器之家。
原文鏈接：https://www.cnblogs.com/georgeJavaEE/archive/2018/10/13/9782358.html
