phpnegap文件上传

phonegap中的FileTransfer对象介绍：

http://docs.phonegap.com/en/1.6.1/cordova_file_file.md.html#FileTransfer

今天的代码为同学所整理。在此记下来，供以后参考

FileTransfer?is an object that allows you to upload files to a server or download files from a server.

用于传文件到服务器端

它里面有示例，写得已经是非常的详细，其中有一段：

var options = new FileUploadOptions();options.fileKey="file";options.fileName=fileURI.substr(fileURI.lastIndexOf('/')+1);options.mimeType="text/plain";

Copy after login

前端的完整版可以参考：http://www.oschina.net/question/200138_34919

今天在做图片上传的时候，怎整也无法在后端获取文件流，其中的Java逻辑如下：

int MAX_SIZE = 102400 * 102400;			DataInputStream in = null;			FileOutputStream fileOut = null;			String contentType = request.getContentType();			try {				if (contentType.indexOf("multipart/form-data") >= 0) {					in = new DataInputStream(request.getInputStream());					int formDataLength = request.getContentLength();					if (formDataLength > MAX_SIZE) {						return;					}					byte dataBytes[] = new byte[formDataLength];					int byteRead = 0;					int totalBytesRead = 0;					while (totalBytesRead <p>?后来才发现，原来是少了一个致命的参数：options.chunkedMode = false;</p><p>?</p><p>关于chunkedMode的解析，请看：http://www.issociate.de/board/post/368589/How_to_force_the_apache_transfer_the_data_in_chunked_mode?.html</p><p>?</p><p>大意是：如果文件长度无法预知时，使用chuckedMode模式传输，现在传输的是图片，大小已经知道，不知道为何apache服务器处理不过来，一定要将chunkedMode设成false，至此上传成功，感觉同学指点</p><p>?</p><p>为了这个参数，我还对比了php版本的文件上传：php的server端这样写的：</p><pre name="code" class="php"><?php // Directory where uploaded images are saved$dirname = "/tmp/phonegap/uploads"; // If uploading fileif ($_FILES) {    print_r($_FILES);    mkdir ($dirname, 0777, true);     move_uploaded_file($_FILES["file"]["tmp_name"],$dirname."/".$_FILES["file"]["name"]);}<span style="color: #ff0000;">// If retrieving an imageelse if (isset($_GET['image'])) {    $file = $dirname."/".$_GET['image'];    // Specify as jpeg    header('Content-type: image/jpeg');      // Resize image for mobile    list($width, $height) = getimagesize($file);     $newWidth = 120.0;     $size = $newWidth / $width;    $newHeight = $height * $size;     $resizedImage = imagecreatetruecolor($newWidth, $newHeight);     $image = imagecreatefromjpeg($file);     imagecopyresampled($resizedImage, $image, 0, 0, 0, 0, $newWidth, $newHeight, $width, $height);     imagejpeg($resizedImage, null, 80); }// If displaying imageselse {    $baseURI = "http://".$_SERVER['SERVER_NAME'].':'.$_SERVER['SERVER_PORT'].$_SERVER['REQUEST_URI'];    $images = scandir($dirname);    $ignore = Array(".", "..");    if ($images) {        foreach($images as $curimg){             if (!in_array($curimg, $ignore)) {                echo "Image: ".$curimg."<br>";                echo "<img  src="%22.%24baseURI.%22?image=%22.%24curimg.%22&rnd=%22.uniqid().%22" alt="phpnegap文件上传" ><br>";             }        }    }    else {        echo "No images on server";    }}?>

Copy after login

?php的代码参考：https://github.com/brycecurtis/articles/tree/master/CameraUpload

代码说明及解说在：https://www.ibm.com/developerworks/mydeveloperworks/blogs/94e7fded-7162-445e-8ceb-97a2140866a9/entry/upload_a_picture_using_phonegap_on_android8?lang=en

php版本的这个前端代码：

// Verify server has been entered        server = document.getElementById('serverUrl').value;        if (server) {        	            // Specify transfer options            var options = new FileUploadOptions();            options.fileKey="file";            options.fileName=imageURI.substr(imageURI.lastIndexOf('/')+1);            options.mimeType="image/jpeg";            <span   style="max-width:90%">options.chunkedMode = false;</span>            // Transfer picture to server            var ft = new FileTransfer();            ft.upload(imageURI, server, function(r) {                document.getElementById('camera_status').innerHTML = "Upload successful: "+r.bytesSent+" bytes uploaded.";            	            }, function(error) {                document.getElementById('camera_status').innerHTML = "Upload failed: Code = "+error.code;            	            }, options);        }

Copy after login

?确实是含有chunkedMode=false的设置，并在本机运行通过。