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>