commons-fileupload-1.3.1.jar
commons-io-2.4.jar
<form action="/fileUpload" method="post" enctype="multipart/form-data"> 名称:<input type="text" name="picname"/><br/> 图片:<input type="file" name="uploadFile"/><br/> <input type="submit" value="上传"/> </form>
@Controller("fileUploadController")
public class FileUploadController {
/**
* 文件上传
*/
@RequestMapping("/fileUpload")
public String testResponseJson(String picname, MultipartFile uploadFile, HttpServletRequest request) throws Exception{
//定义文件名
String fileName = "";
//1.获取原始文件名
String uploadFileName = uploadFile.getOriginalFilename();
//2.截取文件扩展名
String extendName = uploadFileName.substring(uploadFileName.lastIndexOf(".")+1, uploadFileName.length());
//3.把文件加上随机数,防止文件重复
String uuid = UUID.randomUUID().toString().replace("-", "").toUpperCase();
//4.判断是否输入了文件名
if(!StringUtils.isEmpty(picname)) {
fileName = uuid+"_"+picname+"."+extendName;
}else {
fileName = uuid+"_"+uploadFileName;
}
System.out.println(fileName);
//2.获取文件路径
ServletContext context = request.getServletContext();
String basePath = context.getRealPath("/uploads");
//3.解决同一文件夹中文件过多问题
String datePath = new SimpleDateFormat("yyyy-MM-dd").format(new Date());
//4.判断路径是否存在
File file = new File(basePath+"/"+datePath);
if(!file.exists()) {
file.mkdirs();
}
//5.使用 MulitpartFile 接口中方法,把上传的文件写到指定位置
uploadFile.transferTo(new File(file,fileName));
return "success";
}
}
<!-- 配置文件上传解析器 -->
<bean id="multipartResolver" <!-- id 的值是固定的--> class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<!-- 设置上传文件的最大尺寸为 5MB -->
<property name="maxUploadSize">
<value>5242880</value> </property>
</bean>
SpringMVC传统方式上传文件 —— SpringMVC(九)
原文:https://www.cnblogs.com/guancangtingbai/p/12679259.html