Android上传文件到Web服务器PHP接收文件
Android上传文件到服务器,通常采用构造http协议的方法,模拟网页POST方法传输文件,服务器端可以采用JavaServlet或者PHP来接收要传输的文件。使用JavaServlet来接收文件的方法比较常见,在这里给大家介绍一个简单的服务器端使用PHP语言来接收文件的例子。
服务器端代码比较简单,接收传输过来的文件:
为拜泉等地区用户提供了全套网页设计制作服务,及拜泉网站建设行业解决方案。主营业务为网站建设、成都网站设计、拜泉网站设计,以传统方式定制建设网站,并提供域名空间备案等一条龙服务,秉承以专业、用心的态度为用户提供真诚的服务。我们深信只要达到每一位用户的要求,就会得到认可,从而选择与我们长期合作。这样,我们也可以走得更远!
<?php $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']; } ?>
手机客户端代码:
package com.figo.uploadfile; import java.io.BufferedReader; import java.io.DataOutputStream; import java.io.FileInputStream; import java.io.InputStream; import java.io.InputStreamReader; import java.net.HttpURLConnection; import java.net.URL; import android.app.Activity; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.TextView; import android.widget.Toast; public class UploadfileActivity extends Activity { // 要上传的文件路径,理论上可以传输任何文件,实际使用时根据需要处理 private String uploadFile = "/sdcard/testimg.jpg"; private String srcPath = "/sdcard/testimg.jpg"; // 服务器上接收文件的处理页面,这里根据需要换成自己的 private String actionUrl = "http://10.100.1.208/receive_file.php"; private TextView mText1; private TextView mText2; private Button mButton; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); mText1 = (TextView) findViewById(R.id.myText2); mText1.setText("文件路径:\n" + uploadFile); mText2 = (TextView) findViewById(R.id.myText3); mText2.setText("上传网址:\n" + actionUrl); /* 设置mButton的onClick事件处理 */ mButton = (Button) findViewById(R.id.myButton); mButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { uploadFile(actionUrl); } }); } /* 上传文件至Server,uploadUrl:接收文件的处理页面 */ private void uploadFile(String uploadUrl) { String end = "\r\n"; String twoHyphens = "--"; String boundary = "******"; try { URL url = new URL(uploadUrl); HttpURLConnection httpURLConnection = (HttpURLConnection) url .openConnection(); // 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 // 此方法用于在预先不知道内容长度时启用没有进行内部缓冲的 HTTP 请求正文的流。 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"); httpURLConnection.setRequestProperty("Charset", "UTF-8"); httpURLConnection.setRequestProperty("Content-Type", "multipart/form-data;boundary=" + boundary); DataOutputStream dos = new DataOutputStream( httpURLConnection.getOutputStream()); 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); 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(); InputStreamReader isr = new InputStreamReader(is, "utf-8"); BufferedReader br = new BufferedReader(isr); String result = br.readLine(); Toast.makeText(this, result, Toast.LENGTH_LONG).show(); dos.close(); is.close(); } catch (Exception e) { e.printStackTrace(); setTitle(e.getMessage()); } } }
在AndroidManifest.xml文件里添加网络访问权限:
运行结果:
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持创新互联。
分享题目:Android上传文件到Web服务器PHP接收文件
转载注明:http://scyanting.com/article/pgocso.html