背景
网上很多上传到java服务器上的,找了好久,找到了上传到php的了,思路跟我当初想的差不多,就是POST过去。废话不多说,直接上图看代码。
PHP代码
PHP代码
- $target_path = "./upload/" ; //接收文件目录
- $target_path = $target_path . basename ( $_FILES [ 'uploadedfile' ][ 'name' ]);
- if (move_uploaded_file( $_FILES [ 'uploadedfile' ][ 'tmp_name' ], $target_path )) {
- echo "The file " . basename ( $_FILES [ 'uploadedfile' ][ 'name' ]). " has been uploaded" ;
- } else {
- echo "There was an error uploading the file, please try again!" . $_FILES [ 'uploadedfile' ][ 'error' ];
- }
- ?>
Android代码
上传的主要代码:
Java代码
- private void uploadFile(String uploadUrl)
- {
- String end = "\r\n" ;
- String twoHyphens = "--" ;
- String boundary = "******" ;
- try
- {
- URL url = new URL(uploadUrl);
- HttpURLConnection httpURLConnection = (HttpURLConnection) url
- .openConnection(); //http连接
- // 设置每次传输的流大小,可以有效防止手机因为内存不足崩溃
- httpURLConnection.setChunkedStreamingMode( 128 * 1024 ); // 128K
- // 允许输入输出流
- httpURLConnection.setDoInput( true );
- httpURLConnection.setDoOutput( true );
- httpURLConnection.setUseCaches( false );
- // 使用POST方法
- httpURLConnection.setRequestMethod( "POST" );
- httpURLConnection.setRequestProperty( "Connection" , "Keep-Alive" ); //保持一直连接
- httpURLConnection.setRequestProperty( "Charset" , "UTF-8" ); //编码
- httpURLConnection.setRequestProperty( "Content-Type" ,
- "multipart/form-data;boundary=" + boundary); //POST传递过去的编码
- DataOutputStream dos = new DataOutputStream(
- httpURLConnection.getOutputStream()); //输出流
- dos.writeBytes(twoHyphens + boundary + end);
- dos.writeBytes( "Content-Disposition: form-data; name=\"uploadedfile\"; filename=\""
- + srcPath.substring(srcPath.lastIndexOf( "/" ) + 1 )
- + "\""
- + end);
- dos.writeBytes(end);
- FileInputStream fis = new FileInputStream(srcPath); //文件输入流,写入到内存中
- byte [] buffer = new byte [ 8192 ]; // 8k
- int count = 0 ;
- // 读取文件
- while ((count = fis.read(buffer)) != - 1 )
- {
- dos.write(buffer, 0 , count);
- }
- fis.close();
- dos.writeBytes(end);
- dos.writeBytes(twoHyphens + boundary + twoHyphens + end);
- dos.flush();
- InputStream is = httpURLConnection.getInputStream(); //http输入,即得到返回的结果
- InputStreamReader isr = new InputStreamReader(is, "utf-8" );
- BufferedReader br = new BufferedReader(isr);
- String result = br.readLine();
- Toast.makeText( this , result, Toast.LENGTH_LONG).show(); //将结果输出
- dos.close();
- is.close();
- } catch (Exception e)
- {
- e.printStackTrace();
- setTitle(e.getMessage());
- }
- }
因为安卓4.0之后耗时间的操作要求都在非UI线程中操作,即将前面的AsyncTask拿来用了吧~
AsyncTask传送门: http://www.cnblogs.com/yydcdut/p/3707960.html
在这个类中,将上传的操作放在doInBackground当中,可以有ProgressDialog显示上传了多少:
Java代码
- // Read file
- bytesRead = fileInputStream.read(buffer, 0 , bufferSize);
- while (bytesRead > 0 ) {
- outputStream.write(buffer, 0 , bufferSize);
- length += bufferSize;
- progress = ( int ) ((length * 100 ) / totalSize);
- publishProgress(progress);
- bytesAvailable = fileInputStream.available();
- bufferSize = Math.min(bytesAvailable, maxBufferSize);
- bytesRead = fileInputStream.read(buffer, 0 , bufferSize);
- }
- outputStream.writeBytes(lineEnd);
- outputStream.writeBytes(twoHyphens + boundary + twoHyphens
- + lineEnd);
- publishProgress( 100 );
还有就是,注意权限哟:
XML/HTML代码

What’s still popular is the ease of use, flexibility and a strong ecosystem. 1) Ease of use and simple syntax make it the first choice for beginners. 2) Closely integrated with web development, excellent interaction with HTTP requests and database. 3) The huge ecosystem provides a wealth of tools and libraries. 4) Active community and open source nature adapts them to new needs and technology trends.

PHP and Python are both high-level programming languages that are widely used in web development, data processing and automation tasks. 1.PHP is often used to build dynamic websites and content management systems, while Python is often used to build web frameworks and data science. 2.PHP uses echo to output content, Python uses print. 3. Both support object-oriented programming, but the syntax and keywords are different. 4. PHP supports weak type conversion, while Python is more stringent. 5. PHP performance optimization includes using OPcache and asynchronous programming, while Python uses cProfile and asynchronous programming.

PHP is mainly procedural programming, but also supports object-oriented programming (OOP); Python supports a variety of paradigms, including OOP, functional and procedural programming. PHP is suitable for web development, and Python is suitable for a variety of applications such as data analysis and machine learning.

PHP originated in 1994 and was developed by RasmusLerdorf. It was originally used to track website visitors and gradually evolved into a server-side scripting language and was widely used in web development. Python was developed by Guidovan Rossum in the late 1980s and was first released in 1991. It emphasizes code readability and simplicity, and is suitable for scientific computing, data analysis and other fields.

PHP is suitable for web development and rapid prototyping, and Python is suitable for data science and machine learning. 1.PHP is used for dynamic web development, with simple syntax and suitable for rapid development. 2. Python has concise syntax, is suitable for multiple fields, and has a strong library ecosystem.

PHP remains important in the modernization process because it supports a large number of websites and applications and adapts to development needs through frameworks. 1.PHP7 improves performance and introduces new features. 2. Modern frameworks such as Laravel, Symfony and CodeIgniter simplify development and improve code quality. 3. Performance optimization and best practices further improve application efficiency.

PHPhassignificantlyimpactedwebdevelopmentandextendsbeyondit.1)ItpowersmajorplatformslikeWordPressandexcelsindatabaseinteractions.2)PHP'sadaptabilityallowsittoscaleforlargeapplicationsusingframeworkslikeLaravel.3)Beyondweb,PHPisusedincommand-linescrip

PHP type prompts to improve code quality and readability. 1) Scalar type tips: Since PHP7.0, basic data types are allowed to be specified in function parameters, such as int, float, etc. 2) Return type prompt: Ensure the consistency of the function return value type. 3) Union type prompt: Since PHP8.0, multiple types are allowed to be specified in function parameters or return values. 4) Nullable type prompt: Allows to include null values and handle functions that may return null values.


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