Cordova文件傳輸插件fileTransfer

2019-11-09 17:34:58

字體：大中小

來源：轉載

供稿：網友

http://blog.csdn.net/chenglinping/article/details/42008143

任務要求：

訪問手機的目錄，選擇一個文件，并使用該插件將指定文件傳輸到遠程主機的某個指定目錄中。

html代碼：

<!DOCTYPE html><html> <head> <meta charset="utf-8" /> <meta name="format-detection" content="telephone=no" /> <meta name="msapplication-tap-highlight" content="no" />  <meta name="viewport" content="user-scalable=no, initial-scale=1, maximum-scale=1, minimum-scale=1, width=device-width, height=device-height, target-densitydpi=device-dpi" /> <link rel="stylesheet" type="text/CSS" href="css/index.css" /> <title>Hello World</title> </head> <body> <div class="app"> <h1>Apache Cordova</h1> <div id="deviceready" class="blink"> <p class="event listening">Connecting to Device</p> <p class="event received">Device is Ready</p> </div> </div> <script type="text/javascript" src="cordova.js"></script> <script type="text/Javascript" src="js/index.js"></script>  <script type="text/javascript" src="js/camera.js"></script> <input type="button" value="take pictures" onclick="snapPictures()" /> <img style="width:100px;height:100px;position:absolute;left:100px;top:50px;" id="myImage" />  <script type="text/javascript" src="js/geolocation.js"></script> <input type="button" value="location" onclick="getLocation()" />  <script type="text/javascript" src="js/fileTransfer.js"></script> <input type="button" value="fetchFile" onclick="fetchPictures()" />  </body></html>

js代碼：

/**選擇圖片庫***/function fetchPictures(){navigator.camera.getPicture(fetchPictureSuccess, fetchPictureFail, { quality: 50, destinationType: Camera.DestinationType.FILE_URI,//存儲照片的數據/路徑 sourceType : Camera.PictureSourceType.PHOTOLIBRARY ,//打開系統的圖片庫 encodingType: Camera.EncodingType.JPEG, mediaType:Camera.MediaType.PICTURE, popoverOptions : CameraPopoverOptions, saveToPhotoAlbum: true });}function fetchPictureSuccess(imageURI) {var image = document.getElementById('myImage');image.src = imageURI;picUrl = imageURI; /**文件上傳start***/ var serverUri = encodeURI('http://192.168.1.101:8080/testTransfer/test.do'); function fileTransferSuccess(result) { alert("success"); alert("Code = " + result.responseCode + "Response = " + result.response + "Sent = " + result.bytesSent); } function fileTransferError(error) { alert("fail"); alert("An error has occurred: Code = " + error.code + "upload error source " + error.source + "upload error target " + error.target); } var fileUploadOptions = new FileUploadOptions(); fileUploadOptions.fileKey = "file"; fileUploadOptions.fileName = picUrl.substr(picUrl.lastIndexOf('/')+1); fileUploadOptions.mimeType = "image/jpeg";// fileUploadOptions.chunkedMode = false; var fileTransfer = new FileTransfer(); alert("picUrl : "+picUrl + "******serverUri : " + serverUri);// fileTransfer.onprogress = function(progressEvent) {// if (progressEvent.lengthComputable) {// loadingStatus.setPercentage(progressEvent.loaded / progressEvent.total);// } else {// loadingStatus.increment();// }// };fileTransfer.upload(picUrl, serverUri,fileTransferSuccess, fileTransferError, fileUploadOptions); /**文件上傳end***/ }function fetchPictureFail(message) { alert('Failed because: ' + message);}server端JAVA：

package com.cn.server;import java.io.File;import java.io.IOException;import java.net.URLDecoder;import java.util.Iterator;import java.util.List;import javax.servlet.ServletException;import javax.servlet.annotation.WebServlet;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.apache.commons.fileupload.FileItem;import org.apache.commons.fileupload.FileItemFactory;import org.apache.commons.fileupload.disk.DiskFileItemFactory;import org.apache.commons.fileupload.servlet.ServletFileUpload;/** * Servlet implementation class Test */@WebServlet("/Test")public class Test extends HttpServlet {private static final long serialVersionUID = 1L; /*** @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)*/protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { System.out.println("Doing post...."); System.out.println(request.getRequestURI()); /** * The base upload directory. In this directory all uploaded files will * be stored. With the applet param tag 'directory' you can create a * subdirectory for a user. * See http://www.javaatwork.com/parameters.html#directory for more * information about the 'directory' param tag. For a Windows environment * the BASE_DIRECTORY can be e.g. * 'c:/temp' for linux environment '/tmp'. */ boolean isMultipart = ServletFileUpload.isMultipartContent(request); // check if the http request is a multipart request // with other Words check that the http request can have uploaded files if (isMultipart) { // Create a factory for disk-based file items FileItemFactory factory = new DiskFileItemFactory(); // Create a new file upload handler ServletFileUpload servletFileUpload = new ServletFileUpload(factory); // Set upload parameters // See Apache Commons FileUpload for more information // http://jakarta.apache.org/commons/fileupload/using.html servletFileUpload.setSizeMax(-1); try { String directory = ""; // Parse the request List items = servletFileUpload.parseRequest(request); // Process the uploaded items Iterator iter = items.iterator(); while (iter.hasNext()) { FileItem item = (FileItem) iter.next(); // the param tag directory is sent as a request parameter to // the server // check if the upload directory is available if (item.isFormField()) { String name = item.getFieldName(); if (name.equalsIgnoreCase("directory")) { directory = item.getString(); } // retrieve the files } else { // the fileNames are urlencoded String fileName = URLDecoder.decode(item.getName()); File file = new File(directory, fileName+".jpeg"); file = new File("D://androidApp圖片//", file.getPath()); // retrieve the parent file for creating the directories File parentFile = file.getParentFile(); if (parentFile != null) { parentFile.mkdirs(); } // writes the file to the filesystem item.write(file); } } } catch (Exception e) { e.printStackTrace(); response.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR); } response.setStatus(HttpServletResponse.SC_OK); } else { response.setStatus(HttpServletResponse.SC_BAD_REQUEST); }}/*** @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)*/protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { doGet(request,response);}}server端web.xml：<?xml version="1.0" encoding="UTF-8"?><web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0"> <display-name>testTransfer</display-name> <welcome-file-list> <welcome-file>index.html</welcome-file> <welcome-file>index.htm</welcome-file> <welcome-file>index.jsp</welcome-file> <welcome-file>default.html</welcome-file> <welcome-file>default.htm</welcome-file> <welcome-file>default.jsp</welcome-file> </welcome-file-list> <servlet> <servlet-name>Test</servlet-name> <servlet-class>com.cn.server.Test</servlet-class> </servlet> <servlet-mapping> <servlet-name>Test</servlet-name> <url-pattern>/test.do</url-pattern> </servlet-mapping></web-app>

問題是：

cordova run Android之后發現一直上傳失敗報錯：3 = FileTransferError.CONNECTION_ERR，修改一天多始終沒發現js或者server代碼出問題，

最后我抱著死馬當活馬醫，用別人的電腦訪問我的server的URL，竟然過時連接失敗，原來是我電腦自身的防火墻設置沒有允許別人訪問，修改如下：

在電腦的“控制面板/系統和安全/Windows 防火墻/自定義設置‘里關閉防火墻，就OK了。

太浪費時間了?。?！

上一篇：C語言數組元素的循環移位

下一篇：2017移動開發者大會匯總【收藏版】