采用file.Transto 来保存上传的文件,代码简单,速度快.
package com.springbootemaildemo.controller;import com.springbootemaildemo.entity.ResponseEntity; import io.swagger.annotations.Api; import io.swagger.annotations.ApiOperation; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.web.bind.annotation.PostMapping; 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 java.io.File; import java.io.IOException; import java.util.Date;@RestController @RequestMapping("/file") @Api("文件操作") public class FileController {private static final Logger logger = LoggerFactory.getLogger(FileController.class);@ApiOperation("文件上传")@PostMapping("/upload")public ResponseEntity uploadFile(@RequestParam("file") MultipartFile file) {long startTime = System.currentTimeMillis();String path = "";String originalFilename = file.getOriginalFilename();logger.info("fileName:" + originalFilename);int lastIndexOf = originalFilename.lastIndexOf(".");String fileType = originalFilename.substring(lastIndexOf + 1);//文件类型判断 doc,docx,jpg,png,xlslogger.info("截取文件名类型:{}", fileType);if (fileType.equals("jpg") || fileType.equals("png") || fileType.equals("dox") || fileType.equals("docx") || fileType.equals("xls")) {path = "D:/filesss/" + new Date().getTime() + originalFilename;File newFile = new File(path);//通过CommonsMultipartFile的方法直接写文件(注意这个时候)try {file.transferTo(newFile);long endTime = System.currentTimeMillis();logger.info("采用file.Transto的运行时间:" + String.valueOf(endTime - startTime) + "ms");} catch (IOException e) {e.printStackTrace();}} else {return new ResponseEntity("500", "不允许该" + fileType + "文件类型上传", "fail");}return new ResponseEntity("200", path, "success");} }