SpringMvc實現圖片上傳
阿新 • • 發佈：2018-11-02
首先是設定一下tomcat的虛擬路徑，有兩種方法（以在C:/upfile/為例）
- 第一種是在tomcat的bin目錄下的server.xml新增一句
< Context docBase=“C:/upfile/” path="/upload" reloadable=“false”/>
/upload就是虛擬路徑，在下面的檔案可以在瀏覽器localhost：8080 /upload/。。。訪問到
- 第二種是在idea下的簡單設定，如下
訪問localhost:8080/upfile/404.jpg
編寫一個簡單的檔案上傳頁面uploadPictureJsp.jsp
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %> <%-- Created by IntelliJ IDEA. User: Administrator Date: 2018/10/23 Time: 13:48 To change this template use File | Settings | File Templates. --%> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>上傳圖片</title> </head> <body> <form action="/upfile.do" method="post" enctype="multipart/form-data"> <c:if test="${picture!=null}"> <img src="/upfile/${picture}" width="100px" height="100px"> </c:if> <input type="file" name="picture"> <input type="submit"> </form> </body> </html>
然後就是控制器類uploadFile，放在/uploadPicture下
需要匯入兩個包
package uploadPicture; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.multipart.MultipartFile; import javax.servlet.http.HttpServletRequest; import java.io.File; import java.io.IOException; import java.util.UUID; /** * Created by Administrator on 2018/10/23. */ @Controller public class uploadFile { @RequestMapping("/upfile.do") public String upfile(Model model, HttpServletRequest request, MultipartFile picture) throws IOException { // String picrureName=request.getParameter("picture"); request.setAttribute("picture",picture.getOriginalFilename()); String picName= UUID.randomUUID().toString(); String oriName=picture.getOriginalFilename(); String extName=oriName.substring(oriName.lastIndexOf(".")); picture.transferTo(new File("C:/upfile1/"+picName+extName)); System.out.println(request.getParameter("picture")); return "forward:/uploadPictureJsp.jsp"; } }
需要在springmvc的配置檔案demo1.xml配置一下
<!-- 檔案上傳,id必須設定為multipartResolver -->
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<!-- 設定檔案上傳大小 5M -->
<property name="maxUploadSize" value="5000000" />
</bean>
ok，簡單的上傳檔案的demo完成了