1.传统文件上传方式
<!-- 文件上传需要的jar -->
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.3.1</version>
</dependency>
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.4</version>
</dependency>
1>form.jsp配置
设置编码方式为：多部分表格-数据
<form action="fileUpload" method="post" enctype="multipart/form-data">
选择文件：<input type="file" name="upload"><br>
<input type="submit" value="传统方式">
</form>
2>uploadController
/**
* 传统模式的文件上传
*
* @param model
* @return
* @throws Exception
*/
@RequestMapping("/fileUpload")
public String testFileUpload(HttpServletRequest request) throws Exception { String path = request.getSession().getServletContext().getRealPath("/upload");
File file = new File(path);
System.out.println("path:" + path);
if (!file.exists()) {
file.mkdir();
} // 解析request对象，获取上传文件项
DiskFileItemFactory factory = new DiskFileItemFactory();
ServletFileUpload upload = new ServletFileUpload(factory);
List<FileItem> items = upload.parseRequest(request);
// 获得enctype="multpart/form-data"的表单项 for (FileItem item : items) {
if (item.isFormField()) {
} else {
// 获取上传文件想项
String fileName = item.getName();
String name = UUID.randomUUID().toString().replace("-", "")+fileName;
item.write(new File(file, name));
// 在内存中删除临时文件
item.delete();
}
}
return "success";
}
2.SpringMVC文件上传
1>form.jsp配置
设置编码方式为：多部分表格-数据
<form action="fileUpload2" method="post" enctype="multipart/form-data">
选择文件：<input type="file" name="upload"><br> //name必须时controller就收的参数名
<input type="submit" value="SpringMVC方式">
</form>
2>配置上传文件的文件解析器
<!--配置上传文件的文件解析器 -->
<bean id="multipartResolver"
class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<property name="maxUploadSize" value="10485760"></property>
</bean>
3>uploadController
public class UserController {
/**
* Springmvc模式的文件上传
*
* @param model
* @return
* @throws Exception
*/
@RequestMapping("/fileUpload2")
public String testFileUpload2(MultipartFile upload, HttpServletRequest request) throws Exception {
String path = request.getSession().getServletContext().getRealPath("/upload");
File file = new File(path);
System.out.println("path:" + path);
if (!file.exists()) {
file.mkdir();
}
// 获取上传文件想项
String name = UUID.randomUUID().toString().replace("-", "")+upload.getOriginalFilename();
upload.transferTo(new File(path, name));
return "success";
}
————你是我自罚三杯也不肯开口的秘密
