JAVA开发Spring MVC实现文件上传
2019-06-05 11:03
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在spring mvc中实现文件上传的大致步骤如下：
一，pox.xml配置中添加依赖，
<dependency> <groupId>commons-fileupload</groupId> <artifactId>commons-fileupload</artifactId> <version>1.3.1</version> </dependency>
二，在resources中配置新建spring-mvc.xml文件：
<?xml version="1.0" encoding="UTF-8"?> <!--suppress SpringXmlModelInspection --> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd"> <!--suppress SpringXmlModelInspection --> <!--开启注解--> <context:component-scan base-package="com.k9501.controller"/> <!--开启适配器和处理器的注解--> <mvc:annotation-driven/> <!--视图解析器--> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <!--前缀和后缀--> <property name="prefix" value="/jsp/"/> <property name="suffix" value=".jsp"/> </bean> <!--文件上传配置--> <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"> <!--设置字符集--> <property name="defaultEncoding" value="UTF-8"/> <!--设置文件上传大小--> <property name="maxUploadSizePerFile" value="5242880"/> <!--设置总大小--> <property name="maxUploadSize" value="47185920"/> </bean> </beans>
三，页面jsp
在webapp文件夹下，新建upload.jsp文件
<%--
Created by IntelliJ IDEA.
User: Administrator
Date: 2019/6/4
Time: 15:43
To change this template use File | Settings | File Templates
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>文件上传</title>
</head>
<body>
单个文件上传
<form action="${pageContext.request.contextPath}/upload.action" method="post" enctype="multipart/form-data">
头像：<input type="file" name="imgName"> <input type="submit">
</form>
<hr/>
多文件上传
<form action="${pageContext.request.contextPath}/uploadMany.action" method="post" enctype="multipart/form-data">
头像：<input type="file" multiple="multiple" name="fileMany"> <input type="submit">
</form>
<hr/>
多文件上传,分包处理
<form action="${pageContext.request.contextPath}/uploadManyPage.action" method="post" enctype="multipart/form-data">
头像：<input type="file" multiple="multiple" name="fileManyPage"> <input type="submit">
</form>
<hr/>
多文件上传,分包处理工具类
<form action="${pageContext.request.contextPath}/uploadManyPageUtil.action" method="post" enctype="multipart/form-data">
头像：<input type="file" multiple="multiple" name="fileName"> <input type="submit">
</form>
</body>
</html>
四，写控制器
(导包省略)
@Controller
public class UploadController {
//上传单个文件
@RequestMapping(value = "/upload.action",produces = "application/json;charset=utf-8")
@ResponseBody
public String upload(MultipartFile imgName){
String originalFilename = imgName.getOriginalFilename();
try {
imgName.transferTo(new File("E:\\study\\images",originalFilename));
return "success";
} catch (IOException e) {
e.printStackTrace();
return "error";
}
}
//多文件
@RequestMapping(value = "/uploadMany.action",produces = "application/json;charset=utf-8")
@ResponseBody
public String uploadMany(MultipartRequest request){
List<MultipartFile> multipartFileList = request.getFiles("fileMany");
try {
for (int i=0;multipartFileList!=null&&i<multipartFileList.size();i++) {
MultipartFile multipartFile = multipartFileList.get(i);
String originalFilename = multipartFile.getOriginalFilename();
multipartFile.transferTo(new File("E:\\study\\images", originalFilename));
}
return "success";
} catch (IOException e) {
e.printStackTrace();
return "error";
}
}
//多包处理,
@RequestMapping(value = "/uploadManyPage.action",produces = "application/json;charset=utf-8")
@ResponseBody
public String uploadManyPage(MultipartRequest request){
// 路径如 e:/images/2019/06/04/16/51/35/UUID.jpg
List<MultipartFile> multipartFileList = request.getFiles("fileManyPage");
try {
for (int i=0;multipartFileList!=null&&i<multipartFileList.size();i++) {
MultipartFile multipartFile = multipartFileList.get(i);
//获取图片名称
String originalFilename = multipartFile.getOriginalFilename();
//获取文件类型、
String lastPath = originalFilename.substring(originalFilename.lastIndexOf("."));
//uuid
String uuidPath = UUID.randomUUID().toString();
//获取日期包
String datePath = new SimpleDateFormat("yyyy\\MM\\dd\\HH\\mm\\ss").format(new Date());
//完成路径
File file = new File("e:\\study\\images", datePath);
//判断文件夹是否存在
if (!file.exists()){
file.mkdirs();
}
String endPath="E:\\study\\images\\"+datePath+"\\"+uuidPath+lastPath;
System.out.println("endPath = " + endPath);
multipartFile.transferTo(new File(endPath));
}
return "success";
} catch (IOException e) {
e.printStackTrace();
return "error";
}
}
//多包处理, 工具类
@RequestMapping(value = "/uploadManyPageUtil.action",produces = "application/json;charset=utf-8")
@ResponseBody
public String uploadManyPageUtil(MultipartRequest request){
FileUploadUtil.fileUploadUtil(request,"fileName","e:\\study\\images\\");
return "success";
}
}
另外多包处理util工具类参考：
public class FileUploadUtil {
public static Map<String,Object> fileUploadUtil(MultipartRequest request,String fileName,String targetPage){
// 路径如 e:/images/2019/06/04/16/51/35/UUID.jpg
List<MultipartFile> multipartFileList = request.getFiles("fileName");
try {
for (int i=0;multipartFileList!=null&&i<multipartFileList.size();i++) {
MultipartFile multipartFile = multipartFileList.get(i);
//获取图片名称
String originalFilename = multipartFile.getOriginalFilename();
//获取文件类型、
String lastPath = originalFilename.substring(originalFilename.lastIndexOf("."));
//uuid
String uuidPath = UUID.randomUUID().toString();
//获取日期包
String datePath = new SimpleDateFormat("yyyy\\MM\\dd\\HH\\mm\\ss").format(new Date());
//完成路径
File file = new File(targetPage, datePath);
//判断文件夹是否存在
if (!file.exists()){
file.mkdirs();
}
String endPath=targetPage+datePath+"\\"+uuidPath+lastPath;
multipartFile.transferTo(new File(endPath));
}
return null;
} catch (IOException e) {
e.printStackTrace();
return null;
}
}
}
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