spring mvc(注解)上傳文件的簡單例子。
這有幾個需要注意的地方
1.form的enctype=”multipart/form-data” 這個是上傳文件必須的
2.applicationContext.xml中 <bean id=”multipartResolver” class=”org.springframework.web.multipart.commons.CommonsMultipartResolver”/> 關于文件上傳的配置不能少
3、親這兩個jar包不能少哦，之前就是因為少了這個兩個jar，一直報一些奇葩的錯，給我累了個半死~（版本沒什么要求）
commons-fileupload-1.2.2.jar
commons-io-2.0.1.jar
大家可以看具體代碼如下:
web.xml
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<?xml version="0" encoding="UTF-8"?> <web-app xmlns:xsi="http://wwwworg/2001/XMLSchema-instance" xmlns="http://javasuncom/xml/ns/javaee" xmlns:web="http://javasuncom/xml/ns/javaee/web-app_2_xsd" xsi:schemaLocation="http://javasuncom/xml/ns/javaee http://javasuncom/xml/ns/javaee/web-app_2_xsd" id="WebApp_ID" version="5"> <display-name>webtest</display-name> <listener> <listener-class>orgspringframeworkwebcontextContextLoaderListener</listener-class> </listener> <context-param> <param-name>contextConfigLocation</param-name> <param-value> /WEB-INF/config/applicationContextxml /WEB-INF/config/codeifActionxml </param-value> </context-param> <servlet> <servlet-name>dispatcherServlet</servlet-name> <servlet-class>orgspringframeworkwebservletDispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>/WEB-INF/config/codeifActionxml</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <!-- 攔截所有以do結尾的請求 --> <servlet-mapping> <servlet-name>dispatcherServlet</servlet-name> <url-pattern>*do</url-pattern> </servlet-mapping> <welcome-file-list> <welcome-file>indexdo</welcome-file> </welcome-file-list> </web-app> |
applicationContext.xml
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<?xml version="0" encoding="UTF-8"?> <beans xmlns="http://wwwspringframeworkorg/schema/beans" xmlns:xsi="http://wwwworg/2001/XMLSchema-instance" xmlns:p="http://wwwspringframeworkorg/schema/p" xmlns:context="http://wwwspringframeworkorg/schema/context" xsi:schemaLocation="http://wwwspringframeworkorg/schema/beans http://wwwspringframeworkorg/schema/beans/spring-beans-xsd http://wwwspringframeworkorg/schema/context http://wwwspringframeworkorg/schema/context/spring-context-xsd" default-lazy-init="true"> <!-- 啟動Spring MVC的注解功能，完成請求和注解POJO的映射 --> <bean class="orgspringframeworkwebservletmvcannotationAnnotationMethodHandlerAdapter" lazy-init="false" /> <!-- 另外最好還要加入DefaultAnnotationHandlerMapping，不然會被 XML或其它的映射覆蓋！ --> <bean class="orgspringframeworkwebservletmvcannotationDefaultAnnotationHandlerMapping" /> <!-- 對模型視圖名稱的解析，即在模型視圖名稱添加前后綴 --> <bean class="orgspringframeworkwebservletviewInternalResourceViewResolver" p:prefix="/WEB-INF/jsp/" p:suffix="jsp" /> <!-- 支持上傳文件 --> <bean id="multipartResolver" class="orgspringframeworkwebmultipartcommonsCommonsMultipartResolver"/> </beans> |
codeifAction.xml
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<?xml version="0" encoding="UTF-8"?> <beans xmlns="http://wwwspringframeworkorg/schema/beans" xmlns:xsi="http://wwwworg/2001/XMLSchema-instance" xmlns:context="http://wwwspringframeworkorg/schema/context" xsi:schemaLocation="http://wwwspringframeworkorg/schema/beans http://wwwspringframeworkorg/schema/beans/spring-beans-xsd http://wwwspringframeworkorg/schema/context http://wwwspringframeworkorg/schema/context/spring-context-xsd" default-lazy-init="true"> <bean id="uploadAction" class="comcodeifactionUploadAction" /> </beans> |
UploadAction.java
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package comcodeifaction; import javaioFile; import javautilDate; import javaxservlethttpHttpServletRequest; import orgspringframeworkstereotypeController; import orgspringframeworkuiModelMap; import orgspringframeworkwebbindannotationRequestMapping; import orgspringframeworkwebbindannotationRequestParam; import orgspringframeworkwebmultipartMultipartFile; @Controllerpublic class UploadAction { @RequestMapping(value = "/uploaddo") public String upload(@RequestParam(value = "file", required = false) MultipartFile file, HttpServletRequest request, ModelMap model) { Systemoutprintln("開始"); String path = requestgetSession()getServletContext()getRealPath("upload"); String fileName = filegetOriginalFilename(); // String fileName = new Date()getTime()+"jpg"; Systemoutprintln(path); File targetFile = new File(path, fileName); if(!targetFileexists()){ targetFilemkdirs(); } //保存 try { filetransferTo(targetFile); } catch (Exception e) { eprintStackTrace(); } modeladdAttribute("fileUrl", requestgetContextPath()+"/upload/"+fileName); return "result"; } } |
index.jsp
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<%@ page pageEncoding="utf-8"%> <!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>上傳圖片</title> </head> <body> <form action="uploaddo" method="post" enctype="multipart/form-data"> <input type="file" name="file" /> <input type="submit" value="Submit" /></form> </body> </html> |
WEB-INF/jsp/下的result.jsp
