Spring mvc的文件上传

使用spring MVC框架进行文件上传，步骤如下：

首先向dispatcher-servlet.xml添加下面代码：

<bean  id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">  
                    <property name="maxUploadSize" value="1024000000"/>  
                    <property name="resolveLazily" value="true"/>  
                    <property name="maxInMemorySize" value="4096"/>  
</bean>

控制类controller的代码如下：

@RequestMapping(value = "upload", method = RequestMethod.POST)
    public String upload(HttpServletRequest request, HttpServletResponse response) {
        FileOutputStream fileOutputStream = null;
        try {
            MultipartHttpServletRequest multipartHttpservletRequest = (MultipartHttpServletRequest) request;
            MultipartFile multipartFile = multipartHttpservletRequest.getFile("uploadFile");
            String originalFileName = multipartFile.getOriginalFilename();
            File file = new File("../webapps/upload");
            if (!file.exists()) {
                file.mkdir();
            }
            System.out.println(file.getAbsolutePath() + "\t" + originalFileName);
            fileOutputStream = new FileOutputStream(file + "/" + originalFileName);
            fileOutputStream.write(multipartFile.getBytes());
            fileOutputStream.flush();
        } catch (IOException ex) {
            Logger.getLogger(ExcelController.class.getName()).log(Level.SEVERE, null, ex);
        } finally {
            try {
                fileOutputStream.close();
            } catch (IOException ex) {
                Logger.getLogger(ExcelController.class.getName()).log(Level.SEVERE, null, ex);
            }
        }
        return "success";
    }

上传页面index.jsp如下：

    <%@ 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>上传</title>  
    </head>  
    <body>  
        <div>  
            <form  enctype="multipart/form-data"  method="post" action="upload">  
                <input type="file" name="uploadFile" />  
                <button onclick="this.form.submit();">上传</button>  
            </form>  
        </div>  
    </body>  
    </html>