图片.png
1、创建web项目，导入jar包
链接：https://pan.baidu.com/s/1Ayxtmi5L50ygZCGcXWmNuA
提取码：nbwr
2、web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>*.jpg</url-pattern>
</servlet-mapping>
<!-- 前端控制器 -->
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>
org.springframework.web.servlet.DispatcherServlet
</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!-- 中文乱码 -->
<filter>
<filter-name>CharacterEncodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>utf-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>CharacterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
3、WEB-INF/springmvc-servlet.xml
<?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"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd">
<context:component-scan base-package="com.llhc.controller" />
<bean id="irViewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/page/" />
<property name="suffix" value=".jsp" />
</bean>
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"/>
</beans>
4、upload.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<form action="uploadImage" method="post" enctype="multipart/form-data">
选择图片:<input type="file" name="image" accept="image/*" /> <br>
<input type="submit" value="上传">
</form>
</body>
</html>
5、WEB-INF/page/showUploadedFile.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<img src="image/${imageName}"/>
</body>
</html>
6、model
package com.llhc.model;
import org.springframework.web.multipart.MultipartFile;
public class UploadedImageFile {
MultipartFile image;
public MultipartFile getImage() {
return image;
}
public void setImage(MultipartFile image) {
this.image = image;
}
}
7、UploadController
package com.llhc.controller;
import java.io.File;
import java.io.IOException;
import javax.servlet.http.HttpServletRequest;
import org.apache.commons.lang.xwork.RandomStringUtils;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;
import com.llhc.model.UploadedImageFile;
@Controller
public class UploadController {
@RequestMapping("/uploadImage")
public ModelAndView upload(HttpServletRequest request, UploadedImageFile file)
throws IllegalStateException, IOException {
//1、获取一个随机数文件名，防止出现文件名相同问题
String name = RandomStringUtils.randomAlphanumeric(10);
//2、设置完整+文件名
String newFileName = name + ".jpg";
//3、获取web目录下image目录，用于存放上传后的文件
File newFile = new File(request.getServletContext().getRealPath("/image"), newFileName);
newFile.getParentFile().mkdirs();
//4、复制文件
file.getImage().transferTo(newFile);
ModelAndView mav = new ModelAndView("showUploadedFile");
//5、把生成的文件名交给视图
mav.addObject("imageName", newFileName);
return mav;
}
}
8、访问：http://localhost:8080/SpringMvc/uploadImage
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