spring mvc(注解)上传文件的简单例子。
这有几个需要注意的地方
1.form的enctype=”multipart/form-data” 这个是上传文件必须的
2.applicationContext.xml中 <bean id=”multipartResolver” class=”org.springframework.web.multipart.commons.CommonsMultipartResolver”/> 关于文件上传的配置不能少
3、亲这两个jar包不能少哦,之前就是因为少了这个两个jar,一直报一些奇葩的错,给我累了个半死~(版本没什么要求)
commons-fileupload-1.2.2.jar
commons-io-2.0.1.jar
大家可以看具体代码如下:
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 > <!-- 拦截所有以do结尾的请求 --> < 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" > <!-- 启动Spring MVC的注解功能,完成请求和注解POJO的映射 --> < bean class = "orgspringframeworkwebservletmvcannotationAnnotationMethodHandlerAdapter" lazy-init = "false" /> <!-- 另外最好还要加入DefaultAnnotationHandlerMapping,不然会被 XML或其它的映射覆盖! --> < bean class = "orgspringframeworkwebservletmvcannotationDefaultAnnotationHandlerMapping" /> <!-- 对模型视图名称的解析,即在模型视图名称添加前后缀 --> < bean class = "orgspringframeworkwebservletviewInternalResourceViewResolver" p:prefix = "/WEB-INF/jsp/" p:suffix = "jsp" /> <!-- 支持上传文件 --> < 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; @Controller public class UploadAction { @RequestMapping (value = "/uploaddo" ) public String upload( @RequestParam (value = "file" , required = false ) MultipartFile file, HttpServletRequest request, ModelMap model) { Systemoutprintln( "开始" ); 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>上传图片</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
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<%@ page pageEncoding= "utf-8" %> <!DOCTYPE html> <html> <head> <meta charset= "utf-8" > <title>上传结果</title> </head> <body> <img id="codetool">
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。 原文链接:http://www.cnblogs.com/xiohao/p/5273102.html 延伸 · 阅读
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