先建工程
只勾选web和freemarker模板
最后
先看一下最终目录结构
先修改pom文件，加入common-io依赖
然后修改Application.yml文件
spring:
freemarker:
templateLoaderPath: classpath:/templates/
content-type: text/html
charset: UTF-8
suffix: .ftl
然后新建一个controller
package com.example.demo.controller; import org.apache.commons.io.FileUtils;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.servlet.ModelAndView; import javax.servlet.http.HttpServletRequest;
import java.io.File;
import java.io.IOException; @RestController
public class FileController { @RequestMapping("/index")
public ModelAndView index(){
ModelAndView mv = new ModelAndView("index");
return mv;
} @RequestMapping("/upload")
public String upload(HttpServletRequest request, @RequestParam("myFile")MultipartFile file) throws IOException {
if (file.isEmpty()) return "No File"; String name = file.getOriginalFilename();
System.out.println("FileName:" + name); String fileType = name.substring(name.lastIndexOf("."));
System.out.println("FileType:" + fileType); String size = FileUtils.byteCountToDisplaySize(file.getSize());
System.out.println("FileSize:" + size); String path = request.getSession().getServletContext().getRealPath("/static/img/");
File desFile = new File(path+name);
FileUtils.copyInputStreamToFile(file.getInputStream(), desFile); String info = desFile.getAbsolutePath(); return info;
} }
最后新建一个页面
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>$Title$</title>
</head>
<body>
<form method="post" action="/upload" enctype="multipart/form-data">
<input type="file" name="myFile">
<input type="submit" value="Upload">
</form>
</body>
</html>
PS：这里没有启动类的事，因为启动类的上层没有任何代码（官方建议启动类放在根目录）
启动应用
..
..返回结果
..查看控制台
..找到本地文件
..看看可不可以访问