在該示例中，闡述了SpringMVC如何上傳文件。
1、上傳頁(yè)面upload.jsp
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<body> <form action="/TestSpringMVC3/data/uploadfile" enctype="multipart/form-data" method="post"> file:<input type="file" name="file"><br> <input type="submit" value="upload file"> </form> </body> |
2、controller配置文件
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<?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:mvc="http://www.springframework.org/schema/mvc" xmlns:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" 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 http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd"> <!-- 使Spring支持自動(dòng)檢測(cè)組件，如注解的Controller --> <context:component-scan base-package="cn.com.yy.controller"/> <!-- 開(kāi)啟注解配置 --> <mvc:annotation-driven/> <!-- 支持JSP JSTL的解析器 --> <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/page/"/> <property name="suffix" value=".jsp"/> </bean> <!-- 配置文件上傳解析器 --> <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"> <property name="defaultEncoding" value="utf-8"/> <property name="maxUploadSize" value="10485760000"/> <property name="maxInMemorySize" value="40960"/> </bean> </beans> |
主要是添加了文件上傳的解析器，配置了默認(rèn)編碼，最大的上傳大小以及緩存大小等參數(shù)。
3、Controller
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package cn.com.yy.controller; import java.io.File; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestParam; import org.springframework.web.multipart.commons.CommonsMultipartFile; @Controller@RequestMapping("/data") public class FileUploadController { /** * method1:通過(guò)參數(shù)CommonsMultipartFile進(jìn)行解析 * @RequestParam("file")中的file對(duì)應(yīng)于upload.jsp中的file類(lèi)型的name對(duì)應(yīng)的名稱(chēng) * @param file * @return * @throws IOException */ @RequestMapping(value="/uploadfile") public String upload1(@RequestParam("file") CommonsMultipartFile file) throws IOException{ //獲取文件名稱(chēng) String fileName = file.getOriginalFilename(); //寫(xiě)入本地磁盤(pán) InputStream is = file.getInputStream(); byte[] bs = new byte[1024]; int len; OutputStream os = new FileOutputStream(new File("D:/temp/" + fileName)); while ((len = is.read(bs)) != -1) { os.write(bs, 0, len); } os.close(); is.close(); return "upload_success"; } @RequestMapping("/upload") public String toPage(){ return "upload"; } } |
4、返回頁(yè)面upload_success.jsp
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<body> upload file success!! </body> |
5、測(cè)試
訪問(wèn) http://localhost:8080/TestSpringMVC3/data/upload 跳轉(zhuǎn)到上傳頁(yè)面
選擇文件上傳
點(diǎn)擊上傳會(huì)跳轉(zhuǎn)到上傳成功頁(yè)面。
上述方法只是簡(jiǎn)單的講解了SpringMVC如何上傳文件。
第二種方法：使用SpringMVC封裝的方法進(jìn)行文件上傳
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/** * 使用SpringMVC封裝好的方法進(jìn)行文件上傳 * @param request * @param response * @throws IllegalStateException * @throws IOException */ @RequestMapping("/uploadfile2") public void upload2(HttpServletRequest request,HttpServletResponse response) throws IllegalStateException, IOException{ //獲取解析器 CommonsMultipartResolver resolver = new CommonsMultipartResolver(request.getSession().getServletContext()); //判斷是否是文件 if(resolver.isMultipart(request)){ //進(jìn)行轉(zhuǎn)換 MultipartHttpServletRequest multiRequest = (MultipartHttpServletRequest)(request); //獲取所有文件名稱(chēng) Iterator<String> it = multiRequest.getFileNames(); while(it.hasNext()){ //根據(jù)文件名稱(chēng)取文件 MultipartFile file = multiRequest.getFile(it.next()); String fileName = file.getOriginalFilename(); String localPath = "D:/temp/" + fileName; File newFile = new File(localPath); //上傳的文件寫(xiě)入到指定的文件中 file.transferTo(newFile); } } } |
該方法上傳文件效率更優(yōu)。
以上就是本文的全部?jī)?nèi)容，希望對(duì)大家的學(xué)習(xí)有所幫助，也希望大家多多支持服務(wù)器之家。
原文鏈接：http://blog.csdn.net/yyywyr/article/details/44571353
