Java tutorial
/* * Copyright 2012-2013 the original author or authors. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package fr.lille1_univ.car_tprest.jetty.web; import java.io.BufferedOutputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.UnsupportedEncodingException; import java.nio.file.Paths; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.commons.io.IOUtils; import org.eclipse.jetty.http.HttpTester.Message; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.http.MediaType; import org.springframework.stereotype.Controller; import org.springframework.util.AntPathMatcher; import org.springframework.web.bind.annotation.CrossOrigin; import org.springframework.web.bind.annotation.ExceptionHandler; import org.springframework.web.bind.annotation.RequestBody; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.bind.annotation.RequestParam; import org.springframework.web.bind.annotation.ResponseBody; import org.springframework.web.multipart.MultipartFile; import fr.lille1_univ.car_tprest.jetty.model.UpweeFile; import fr.lille1_univ.car_tprest.jetty.model.UpweeMessage; import fr.lille1_univ.car_tprest.jetty.model.UpweeRegisteringCredentials; import fr.lille1_univ.car_tprest.jetty.model.json.JSONRenderableMessage; import fr.lille1_univ.car_tprest.jetty.model.parameters.UpweeCredentials; import fr.lille1_univ.car_tprest.jetty.model.parameters.UpweeMoveParams; import fr.lille1_univ.car_tprest.jetty.service.AuthenticationService; import fr.lille1_univ.car_tprest.jetty.service.FileSystemService; import fr.lille1_univ.car_tprest.jetty.utils.Logger; /** * The controller of the server */ @Controller public class UpweeController { Logger l = new Logger("UpweeController"); @Autowired private AuthenticationService authenticationService; //manage authentication @Autowired private FileSystemService fileSystemService; //manage files /** * A call that allows users to authenticate */ @CrossOrigin @RequestMapping(method = { RequestMethod.POST }, headers = { "Content-type=application/json" }, value = "/api/authenticate", produces = "application/json") public @ResponseBody String authenticate(@RequestBody String credentials) { return this.authenticationService.authenticate(UpweeCredentials.getFromJsonString(credentials)); } /** * A call that is used to register a new user */ @CrossOrigin @RequestMapping(method = { RequestMethod.POST }, headers = { "Content-type=application/json" }, value = "/api/register", produces = "application/json") public @ResponseBody String register(@RequestBody String credentials) { return this.authenticationService.register(UpweeRegisteringCredentials.getFromJsonString(credentials)); } /** * A call that is used to render the file list of the corresponding path */ @CrossOrigin @RequestMapping(method = { RequestMethod.GET }, value = "/api/files/**", produces = MediaType.APPLICATION_JSON_VALUE) public @ResponseBody String getList(HttpServletRequest request, @RequestParam(value = "file", required = false, defaultValue = "") String filename) { String decodedfileName = ""; try { decodedfileName = java.net.URLDecoder.decode(filename, "UTF-8"); } catch (UnsupportedEncodingException e) { decodedfileName = filename; e.printStackTrace(); } return this.fileSystemService .getListFromPath(getFullFileRequestPath("/api/files/**", request, decodedfileName)); } /** * A call that is used to download the file in the pat corresponding to the filename */ @CrossOrigin @RequestMapping(method = { RequestMethod.GET }, value = "/api/files/download/**", produces = MediaType.APPLICATION_OCTET_STREAM_VALUE) public void download(HttpServletRequest request, @RequestParam(value = "file", required = true) String filename, HttpServletResponse response) { try { response.addHeader("Content-disposition", "attachment;filename=" + filename); response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE); String decodedfileName = ""; decodedfileName = java.net.URLDecoder.decode(filename, "UTF-8"); InputStream stream = this.fileSystemService .getFile(getFullFileRequestPath("/api/files/download/**", request, decodedfileName)); IOUtils.copy(stream, response.getOutputStream()); response.flushBuffer(); stream.close(); } catch (Exception e) { l.e("Unable to get file"); e.printStackTrace(); } } /** * A call that is used to render the object with all his props */ @CrossOrigin @RequestMapping(method = { RequestMethod.DELETE }, value = "/api/files/delete/**", produces = MediaType.APPLICATION_JSON_VALUE) public @ResponseBody String delete(HttpServletRequest request, @RequestParam(value = "file", required = true, defaultValue = "") String filename) { String decodedfileName = ""; try { decodedfileName = java.net.URLDecoder.decode(filename, "UTF-8"); } catch (UnsupportedEncodingException e) { decodedfileName = filename; e.printStackTrace(); } return this.fileSystemService .deleteFromPath(getFullFileRequestPath("/api/files/delete/**", request, decodedfileName)); } /** * A call that is used to upload a new file to the server */ @CrossOrigin @RequestMapping(method = { RequestMethod.POST }, value = "/api/files/upload/**", produces = "application/json") public @ResponseBody String upload(HttpServletRequest request, @RequestParam("file") MultipartFile file) { try { return this.fileSystemService.uploadSingleFile(file, getFullFileRequestPath("/api/files/upload/**", request, "")); } catch (IllegalStateException e) { return new JSONRenderableMessage(UpweeMessage.TOO_LARGE_FILE).renderJSON(); } } /** * A call that is used to move a file to another path */ @CrossOrigin @RequestMapping(method = { RequestMethod.POST }, headers = { "Content-type=application/json" }, value = "/api/files/move/**", produces = "application/json") public @ResponseBody String move(@RequestBody String parameters, HttpServletRequest request) { return this.fileSystemService.move(UpweeMoveParams.getFromJsonString(parameters), getFullFileRequestPath("/api/files/create/**", request, "")); } /** * A call that is used to create a new file */ @CrossOrigin @RequestMapping(method = { RequestMethod.POST }, value = "/api/files/create/**", produces = "application/json") public @ResponseBody String create(HttpServletRequest request) throws Exception { return this.fileSystemService.createFolder(getFullFileRequestPath("/api/files/create/**", request, "")); } /** * Helper functions */ /** * An helper function that is used to render the path from a request */ public String getFullFileRequestPath(String pattern, HttpServletRequest request, String filename) { String tail = new AntPathMatcher().extractPathWithinPattern(pattern, request.getRequestURI()); return tail += "/" + filename; } }