标签：请求 file item and 配置 common span not jsp
SpringMVC默认是关闭fileupload功能的
1-打开SpringMVC的文件上传功能：
servlet.xml中配置：
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<property name="maxUploadSize" value="100000"/>
<property name="maxInMemorySize" value="10240" />
</bean>
配置后，当SpringMVC接受到multipartRequest的时候，就会把HttpServletRequest转为MultipartHttpServletRequest类型
2-创建上传文件的file.jsp：
<form action="dynamicFields.action?method=uploadFile" method="post" enctype="multipart/form-data">
<input type="file" name="myfile" id="myfile" value="" /><br/>
<input type="submit" value="确认提交">
</form>
一定不要漏掉enctype="multipart/form-data"，否则web容器认为这不是一个MultipartRequest请求，
会报错org.springframework.web.multipart.MultipartException: The current
request is not a multipart request。
这样一旦某个Request是一个MultipartRequest，它就会首先被MultipartResolver处理，然后再转发相应的Controller。
在UploadImageController中，将HttpServletRequest转型为MultipartHttpServletRequest，就能非常方便地得到文件名和文件内容：
3-java 代码
（一）：
public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response) throws Exception { // 转型为MultipartHttpRequest： MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request; // 获得文件： MultipartFile file = multipartRequest.getFile(" file "); // 获得文件名： String filename = file.getOriginalFilename(); // 获得输入流： InputStream input = file.getInputStream(); // 写入文件 // 或者： File source = new File(localfileName.toString()); multipartFile.transferTo(source); }
（二）：
MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request; Map fileMap = multipartRequest.getFileMap(); // 获取上传文件的参数 Set fieldName = fileMap.keySet(); while (iter.hasNext()) { String key = (String) iter.next(); if (key.equals("IdCardFront")) { CommonsMultipartFile commonsMultipartFile = (CommonsMultipartFile)fileMap.get("IdCardFront"); FileItem fi = commonsMultipartFile.getFileItem(); fileName = fi.getName(); // 写入文件 if (!fileName.equals("")) { if (fileName.lastIndexOf("\\") >= 0) { file = new File(IMGPath+ fileName.substring(fileName.lastIndexOf("\\"))); } else { file = new File(IMGPath+ fileName.substring(fileName.lastIndexOf("\\") + 1)); } fi.write(file); idCardPicA = PictureAndBase64.GetImageStr(file.getAbsolutePath()); } } if (key.equals("IdCardBack")) { CommonsMultipartFile commonsMultipartFile = (CommonsMultipartFile)fileMap.get("IdCardBack"); FileItem fi = commonsMultipartFile.getFileItem(); fileName = fi.getName(); // 写入文件 if (!fileName.equals("")) { if (fileName.lastIndexOf("\\") >= 0) { file = new File(IMGPath+ fileName.substring(fileName.lastIndexOf("\\"))); } else { file = new File(IMGPath+ fileName.substring(fileName.lastIndexOf("\\") + 1)); } fi.write(file); idCardPicA = PictureAndBase64.GetImageStr(file.getAbsolutePath()); } } if (key.equals("BusinessLicense")) { CommonsMultipartFile commonsMultipartFile = (CommonsMultipartFile)fileMap.get("BusinessLicense"); FileItem fi = commonsMultipartFile.getFileItem(); fileName = fi.getName(); // 写入文件 if (!fileName.equals("")) { if (fileName.lastIndexOf("\\") >= 0) { file = new File(IMGPath+ fileName.substring(fileName.lastIndexOf("\\"))); } else { file = new File(IMGPath+ fileName.substring(fileName.lastIndexOf("\\") + 1)); } fi.write(file); idCardPicA = PictureAndBase64.GetImageStr(file.getAbsolutePath()); } } if (key.equals("Attorney")) { CommonsMultipartFile commonsMultipartFile = (CommonsMultipartFile)fileMap.get("Attorney"); FileItem fi = commonsMultipartFile.getFileItem(); fileName = fi.getName(); // 写入文件 if (!fileName.equals("")) { if (fileName.lastIndexOf("\\") >= 0) { file = new File(IMGPath+ fileName.substring(fileName.lastIndexOf("\\"))); } else { file = new File(IMGPath+ fileName.substring(fileName.lastIndexOf("\\") + 1)); } fi.write(file); idCardPicA = PictureAndBase64.GetImageStr(file.getAbsolutePath()); } } }
标签：请求 file item and 配置 common span not jsp
原文地址：http://www.cnblogs.com/zhaoyifan123/p/6080379.html
