强烈推荐一个大神的人工智能的教程:http://www.captainbed/zhanghan
简述 |
上传 |
1.添加相关jar包的依赖
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>5.0.7.RELEASE</version>
</dependency>
<!-- fileupload-->
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.3.3</version>
</dependency>
<!-- servlet-api -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>4.0.1</version>
<scope>provided</scope>
</dependency>
jar包引用说明:
使用jsp需要配置视图解析器,上传功能需要配置上传文件解析器,因此需要引用spring-webmvc的jar包,上传文件方法的controller使用时要被加载到IOC容器中,因此需要配置包扫描,包扫描在spring-context包下,这个包已经在spring-webmvc下依赖,所以不需要重复依赖。上传是基于commons-fileupload的,因此需要引用commons-fileupload的jar包
2.编写springmvc的配置文件springmvc-config.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework/schema/beans"
xmlns:xsi="http://www.w3/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework/schema/mvc"
xmlns:context="http://www.springframework/schema/context"
xsi:schemaLocation="http://www.springframework/schema/beans http://www.springframework/schema/beans/spring-beans.xsd http://www.springframework/schema/context http://www.springframework/schema/context/spring-context.xsd http://www.springframework/schema/mvc http://www.springframework/schema/mvc/spring-mvc.xsd">
<!--包扫描-->
<context:component-scan base-package="zh.spring.controller"/>
<!--注解驱动-->
<mvc:annotation-driven/>
<!--上传解析器-->
<bean id="multipartResolver" class="org.springframework.web.multipartmons.CommonsMultipartResolver">
<property name="maxInMemorySize">
<value>10485760</value>
</property>
<property name="defaultEncoding">
<value>UTF-8</value>
</property>
</bean>
<!--视图解析器-->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="WEB-INF/content/"/>
<property name="suffix" value=".jsp"/>
</bean>
</beans>
3.配置前端控制器
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3/2001/XMLSchema-instance" version="3.0"
xmlns="http://java.sun/xml/ns/javaee"
xsi:schemaLocation="http://java.sun/xml/ns/javaee
http://java.sun/xml/ns/javaee/web-app_3_0.xsd">
<!--前端控制器-->
<servlet>
<servlet-name>FileUpload</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:springmvc-config.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>FileUpload</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
4.添加jsp文件
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>文件上传</title>
</head>
<body>
<h2>文件上传</h2>
<form action="upload" enctype="multipart/form-data" method="post">
<table>
<tr>
<td>请选择文件:</td>
<td><input type="file" name="file"></td>
</tr>
<tr>
<td><input type="submit"value="上传"></td>
</tr>
</table>
</form>
</body>
</html>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>上传成功</title>
</head>
<body>
<h2>恭喜你,上传成功了</h2>
</body>
</html>
5.Controller方法
package zh.spring.controller;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.multipart.MultipartFile;
import javax.servlet.http.HttpServletRequest;
import java.io.File;
@Controller
public class FileUploadController {
@RequestMapping("index")
public String index(){
return "uploadForm";
}
@RequestMapping(value = "/upload",method = RequestMethod.POST)
public String upload(HttpServletRequest request,
@RequestParam("file")MultipartFile file) throws Exception{
if(!file.isEmpty()){
// 上传文件路径
String path = request.getServletContext().getRealPath("/images/");
System.out.println(path);
// 上传文件名
String filename = file.getOriginalFilename();
File filepath = new File(path,filename);
if(!filepath.getParentFile().exists()){
filepath.getParentFile().mkdirs();
}
// 将上传文件保存到一个目标文件中
file.transferTo(new File(path+File.separator+filename));
return "success";
}else{
return "error";
}
}
}
更多推荐
Spring MVC上传
发布评论