程式碼片段：

//新增post
	@RequestMapping(method=RequestMethod.POST, value="/addPost")
	@ResponseBody
	public int addPost(Post post, MultipartFile file, HttpSession session) {
		try {
			if(file.getSize() > 0) {
				String path = session.getServletContext().getRealPath("upload/postImg/");//絕對路徑
				System.out.println(path);
			    File targetFile = new File(path, file.getOriginalFilename());
			    file.transferTo(targetFile);
			    String p = path+file.getOriginalFilename();
			    System.out.println(p);
				post.setPostImg(file.getOriginalFilename());
				System.out.println(post.getPostImg());
				System.out.println(post);
			}    
		} catch (IllegalStateException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
		System.out.println(post);
		return this.postService.addPost(post);
		
	} 
 

springmvc-config.xml配置：

<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
  http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
  http://www.springframework.org/schema/mvc
  http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd
  http://www.springframework.org/schema/context
  http://www.springframework.org/schema/context/spring-context-4.3.xsd">
    <!-- 配置包掃描器，掃描@Controller註解的類 -->
    <context:component-scan base-package="com.book.controller" />
    <!-- 載入註解驅動 -->
    <mvc:annotation-driven />
    <!-- 註冊介面卡 -->
    <!-- 配置檢視解析器 -->
    <!-- 訪問靜態檔案 -->
     <mvc:annotation-driven />
	 <mvc:resources location="/upload/" mapping="/upload/**"/>   
	 <mvc:resources location="/js/" mapping="/js/**"/>    
	 <mvc:resources location="/css/" mapping="/css/**"/>  
    <!-- 支援檔案上傳 -->
	<bean id="multipartResolver"
		class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
		<property name="maxUploadSize" value="104857600" />
		<property name="maxInMemorySize" value="4096" />
		<property name="defaultEncoding" value="UTF-8"></property>
	</bean>
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/" />
        <property name="suffix" value=".jsp" />
    </bean>
    
</beans>

 

本例用到了SSM框架知識，不懂得朋友可以先去了解SSM的相關知識，往後我會補上SSM的整個詳細搭建流程。