Java tutorial
/* * The MIT License * * Copyright 2017 Intuit Inc. * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ package com.intuit.karate.demo.controller; import com.intuit.karate.demo.domain.FileInfo; import java.io.File; import java.util.UUID; import org.apache.commons.io.FileUtils; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.core.io.FileSystemResource; import org.springframework.core.io.Resource; import org.springframework.http.HttpHeaders; import org.springframework.http.MediaType; import org.springframework.http.ResponseEntity; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.PathVariable; 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.ResponseBody; import org.springframework.web.multipart.MultipartFile; /** * * @author pthomas3 */ @Controller @RequestMapping("/files") public class UploadController { private static final Logger logger = LoggerFactory.getLogger(UploadController.class); private static final String FILES_BASE = "target/demofiles/"; public UploadController() throws Exception { File file = new File(FILES_BASE); FileUtils.forceMkdir(file); logger.info("created directory: {}", file); } @PostMapping public @ResponseBody FileInfo upload(@RequestParam("file") MultipartFile multipartFile, @RequestParam String name) throws Exception { String uuid = UUID.randomUUID().toString(); String filePath = FILES_BASE + uuid; FileUtils.copyToFile(multipartFile.getInputStream(), new File(filePath)); FileUtils.writeStringToFile(new File(filePath + "_meta.txt"), name, "utf-8"); return new FileInfo(uuid, name); } @GetMapping("/{id:.+}") public ResponseEntity<Resource> download(@PathVariable String id) throws Exception { String filePath = FILES_BASE + id; File file = new File(filePath); File meta = new File(filePath + "_meta.txt"); String name = FileUtils.readFileToString(meta, "utf-8"); return ResponseEntity.ok().header(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename=\"" + name + "\"") .header(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_OCTET_STREAM_VALUE) .body(new FileSystemResource(file)); } }