Android之使用Http协议实现文件上传功能



注意一般使用Http协议上传的文件都比较小，一般是小于2M

这里示例是上传一个小的MP3文件

1.主Activity：MainActivity.java

public class MainActivity extends Activity

{

private static final String TAG = "MainActivity";

private EditText timelengthText;

private EditText titleText;

private EditText videoText;

@Override

public void onCreate(Bundle savedInstanceState)

{

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

//提交上传按钮

Button button = (Button) this.findViewById(R.id.button);

timelengthText = (EditText) this.findViewById(R.id.timelength);

videoText = (EditText) this.findViewById(R.id.video);

titleText = (EditText) this.findViewById(R.id.title);

button.setOnClickListener(new View.OnClickListener()

{

@Override

public void onClick(View v)

{

String title = titleText.getText().toString();

String timelength = timelengthText.getText().toString();

Map<String, String> params = new HashMap<String, String>();

params.put("method", "save");

params.put("title", title);

params.put("timelength", timelength);

try

{

//得到SDCard的目录

File uploadFile = new File(Environment.getExternalStorageDirectory(), videoText.getText().toString());

//上传音频文件

FormFile formfile = new FormFile("02.mp3", uploadFile, "video", "audio/mpeg");

SocketHttpRequester.post("http://192.168.1.100:8080/videoweb/video/manage.do", params, formfile);

Toast.makeText(MainActivity.this, R.string.success, 1).show();

}

catch (Exception e)

{

Toast.makeText(MainActivity.this, R.string.error, 1).show();

Log.e(TAG, e.toString());

}

}

});

}

}

2.上传工具类，注意里面构造协议字符串需要根据不同的提交表单来处理

public class SocketHttpRequester

{

/**

* 发送xml数据

* @param path 请求地址

* @param xml xml数据

* @param encoding 编码

* @return

* @throws Exception

*/

public static byte[] postXml(String path, String xml, String encoding) throws Exception{

byte[] data = xml.getBytes(encoding);

URL url = new URL(path);

HttpURLConnection conn = (HttpURLConnection)url.openConnection();

conn.setRequestMethod("POST");

conn.setDoOutput(true);

conn.setRequestProperty("Content-Type", "text/xml; charset="+ encoding);

conn.setRequestProperty("Content-Length", String.valueOf(data.length));

conn.setConnectTimeout(5 * 1000);

OutputStream outStream = conn.getOutputStream();

outStream.write(data);

outStream.flush();

outStream.close();

if(conn.getResponseCode()==200){

return readStream(conn.getInputStream());

}

return null;

}

/**

* 直接通过HTTP协议提交数据到服务器,实现如下面表单提交功能:

* <FORM METHOD=POST ACTION="http://192.168.0.200:8080/ssi/fileload/test.do" enctype="multipart/form-data">

<INPUT TYPE="text" NAME="name">

<INPUT TYPE="text" NAME="id">

<input type="file" name="imagefile"/>

<input type="file" name="zip"/>

</FORM>

* @param path 上传路径(注：避免使用localhost或127.0.0.1这样的路径测试，

* 因为它会指向手机模拟器，你可以使用http://www.baidu.com或http://192.168.1.10:8080这样的路径测试)

* @param params 请求参数 key为参数名,value为参数值

* @param file 上传文件

*/

public static boolean post(String path, Map<String, String> params, FormFile[] files) throws Exception

{

//数据分隔线

final String BOUNDARY = "---------------------------7da2137580612";

//数据结束标志"---------------------------7da2137580612--"

final String endline = "--" + BOUNDARY + "--/r/n";

//下面两个for循环都是为了得到数据长度参数，依据表单的类型而定

//首先得到文件类型数据的总长度(包括文件分割线)

int fileDataLength = 0;

for(FormFile uploadFile : files)

{

StringBuilder fileExplain = new StringBuilder();

fileExplain.append("--");

fileExplain.append(BOUNDARY);

fileExplain.append("/r/n");

fileExplain.append("Content-Disposition: form-data;name=/""+ uploadFile.getParameterName()+"/";filename=/""+ uploadFile.getFilname() + "/"/r/n");

fileExplain.append("Content-Type: "+ uploadFile.getContentType()+"/r/n/r/n");

fileExplain.append("/r/n");

fileDataLength += fileExplain.length();

if(uploadFile.getInStream()!=null){

fileDataLength += uploadFile.getFile().length();

}else{

fileDataLength += uploadFile.getData().length;

}

}

//再构造文本类型参数的实体数据

StringBuilder textEntity = new StringBuilder();

for (Map.Entry<String, String> entry : params.entrySet())

{

textEntity.append("--");

textEntity.append(BOUNDARY);

textEntity.append("/r/n");

textEntity.append("Content-Disposition: form-data; name=/""+ entry.getKey() + "/"/r/n/r/n");

textEntity.append(entry.getValue());

textEntity.append("/r/n");

}

//计算传输给服务器的实体数据总长度(文本总长度+数据总长度+分隔符)

int dataLength = textEntity.toString().getBytes().length + fileDataLength + endline.getBytes().length;

URL url = new URL(path);

//默认端口号其实可以不写

int port = url.getPort()==-1 ? 80 : url.getPort();

//建立一个Socket链接

Socket socket = new Socket(InetAddress.getByName(url.getHost()), port);

//获得一个输出流（从Android流到web）

OutputStream outStream = socket.getOutputStream();

//下面完成HTTP请求头的发送

String requestmethod = "POST "+ url.getPath()+" HTTP/1.1/r/n";

outStream.write(requestmethod.getBytes());

//构建accept

String accept = "Accept: image/gif, image/jpeg, image/pjpeg, image/pjpeg, application/x-shockwave-flash, application/xaml+xml, application/vnd.ms-xpsdocument, application/x-ms-xbap, application/x-ms-application, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, */*/r/n";

outStream.write(accept.getBytes());

//构建language

String language = "Accept-Language: zh-CN/r/n";

outStream.write(language.getBytes());

//构建contenttype

String contenttype = "Content-Type: multipart/form-data; boundary="+ BOUNDARY+ "/r/n";

outStream.write(contenttype.getBytes());

//构建contentlength

String contentlength = "Content-Length: "+ dataLength + "/r/n";

outStream.write(contentlength.getBytes());

//构建alive

String alive = "Connection: Keep-Alive/r/n";

outStream.write(alive.getBytes());

//构建host

String host = "Host: "+ url.getHost() +":"+ port +"/r/n";

outStream.write(host.getBytes());

//写完HTTP请求头后根据HTTP协议再写一个回车换行

outStream.write("/r/n".getBytes());

//把所有文本类型的实体数据发送出来

outStream.write(textEntity.toString().getBytes());

//把所有文件类型的实体数据发送出来

for(FormFile uploadFile : files)

{

StringBuilder fileEntity = new StringBuilder();

fileEntity.append("--");

fileEntity.append(BOUNDARY);

fileEntity.append("/r/n");

fileEntity.append("Content-Disposition: form-data;name=/""+ uploadFile.getParameterName()+"/";filename=/""+ uploadFile.getFilname() + "/"/r/n");

fileEntity.append("Content-Type: "+ uploadFile.getContentType()+"/r/n/r/n");

outStream.write(fileEntity.toString().getBytes());

//边读边写

if(uploadFile.getInStream()!=null)

{

byte[] buffer = new byte[1024];

int len = 0;

while((len = uploadFile.getInStream().read(buffer, 0, 1024))!=-1)

{

outStream.write(buffer, 0, len);

}

uploadFile.getInStream().close();

}

else

{

outStream.write(uploadFile.getData(), 0, uploadFile.getData().length);

}

outStream.write("/r/n".getBytes());

}

//下面发送数据结束标志，表示数据已经结束

outStream.write(endline.getBytes());

BufferedReader reader = new BufferedReader(new InputStreamReader(socket.getInputStream()));

//读取web服务器返回的数据，判断请求码是否为200，如果不是200，代表请求失败

if(reader.readLine().indexOf("200")==-1)

{

return false;

}

outStream.flush();

outStream.close();

reader.close();

socket.close();

return true;

}

/**

* 提交数据到服务器

* @param path 上传路径(注：避免使用localhost或127.0.0.1这样的路径测试，因为它会指向手机模拟器，你可以使用http://www.baidu.com或http://192.168.1.10:8080这样的路径测试)

* @param params 请求参数 key为参数名,value为参数值

* @param file 上传文件

*/

public static boolean post(String path, Map<String, String> params, FormFile file) throws Exception

{

return post(path, params, new FormFile[]{file});

}

/**

* 提交数据到服务器

* @param path 上传路径(注：避免使用localhost或127.0.0.1这样的路径测试，因为它会指向手机模拟器，你可以使用http://www.baidu.com或http://192.168.1.10:8080这样的路径测试)

* @param params 请求参数 key为参数名,value为参数值

* @param encode 编码

*/

public static byte[] postFromHttpClient(String path, Map<String, String> params, String encode) throws Exception

{

//用于存放请求参数

List<NameValuePair> formparams = new ArrayList<NameValuePair>();

for(Map.Entry<String, String> entry : params.entrySet())

{

formparams.add(new BasicNameValuePair(entry.getKey(), entry.getValue()));

}

UrlEncodedFormEntity entity = new UrlEncodedFormEntity(formparams, encode);

HttpPost httppost = new HttpPost(path);

httppost.setEntity(entity);

//看作是浏览器

HttpClient httpclient = new DefaultHttpClient();

//发送post请求

HttpResponse response = httpclient.execute(httppost);

return readStream(response.getEntity().getContent());

}

/**

* 发送请求

* @param path 请求路径

* @param params 请求参数 key为参数名称 value为参数值

* @param encode 请求参数的编码

*/

public static byte[] post(String path, Map<String, String> params, String encode) throws Exception

{

//String params = "method=save&name="+ URLEncoder.encode("老毕", "UTF-8")+ "&age=28&";//需要发送的参数

StringBuilder parambuilder = new StringBuilder("");

if(params!=null && !params.isEmpty())

{

for(Map.Entry<String, String> entry : params.entrySet())

{

parambuilder.append(entry.getKey()).append("=")

.append(URLEncoder.encode(entry.getValue(), encode)).append("&");

}

parambuilder.deleteCharAt(parambuilder.length()-1);

}

byte[] data = parambuilder.toString().getBytes();

URL url = new URL(path);

HttpURLConnection conn = (HttpURLConnection)url.openConnection();

//设置允许对外发送请求参数

conn.setDoOutput(true);

//设置不进行缓存

conn.setUseCaches(false);

conn.setConnectTimeout(5 * 1000);

conn.setRequestMethod("POST");

//下面设置http请求头

conn.setRequestProperty("Accept", "image/gif, image/jpeg, image/pjpeg, image/pjpeg, application/x-shockwave-flash, application/xaml+xml, application/vnd.ms-xpsdocument, application/x-ms-xbap, application/x-ms-application, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, */*");

conn.setRequestProperty("Accept-Language", "zh-CN");

conn.setRequestProperty("User-Agent", "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.2; Trident/4.0; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.04506.30; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)");

conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");

conn.setRequestProperty("Content-Length", String.valueOf(data.length));

conn.setRequestProperty("Connection", "Keep-Alive");

//发送参数

DataOutputStream outStream = new DataOutputStream(conn.getOutputStream());

outStream.write(data);//把参数发送出去

outStream.flush();

outStream.close();

if(conn.getResponseCode()==200)

{

return readStream(conn.getInputStream());

}

return null;

}

/**

* 读取流

* @param inStream

* @return 字节数组

* @throws Exception

*/

public static byte[] readStream(InputStream inStream) throws Exception

{

ByteArrayOutputStream outSteam = new ByteArrayOutputStream();

byte[] buffer = new byte[1024];

int len = -1;

while( (len=inStream.read(buffer)) != -1)

{

outSteam.write(buffer, 0, len);

}

outSteam.close();

inStream.close();

return outSteam.toByteArray();

}

}

public class StreamTool

{

/**

* 从输入流读取数据

* @param inStream

* @return

* @throws Exception

*/

public static byte[] readInputStream(InputStream inStream) throws Exception{

ByteArrayOutputStream outSteam = new ByteArrayOutputStream();

byte[] buffer = new byte[1024];

int len = 0;

while( (len = inStream.read(buffer)) !=-1 ){

outSteam.write(buffer, 0, len);

}

outSteam.close();

inStream.close();

return outSteam.toByteArray();

}

}

/**

* 使用JavaBean封装上传文件数据

*

*/

public class FormFile

{

//上传文件的数据

private byte[] data;

private InputStream inStream;

private File file;

//文件名称

private String filname;

//请求参数名称

private String parameterName;

//内容类型

private String contentType = "application/octet-stream";

/**

* 上传小文件，把文件数据先读入内存

* @param filname

* @param data

* @param parameterName

* @param contentType

*/

public FormFile(String filname, byte[] data, String parameterName, String contentType)

{

this.data = data;

this.filname = filname;

this.parameterName = parameterName;

if(contentType!=null) this.contentType = contentType;

}

/**

* 上传大文件，一边读文件数据一边上传

* @param filname

* @param file

* @param parameterName

* @param contentType

*/

public FormFile(String filname, File file, String parameterName, String contentType)

{

this.filname = filname;

this.parameterName = parameterName;

this.file = file;

try

{

this.inStream = new FileInputStream(file);

}

catch (FileNotFoundException e)

{

e.printStackTrace();

}

if(contentType!=null) this.contentType = contentType;

}

public File getFile()

{

return file;

}

public InputStream getInStream()

{

return inStream;

}

public byte[] getData()

{

return data;

}

public String getFilname()

{

return filname;

}

public void setFilname(String filname)

{

this.filname = filname;

}

public String getParameterName()

{

return parameterName;

}

public void setParameterName(String parameterName)

{

this.parameterName = parameterName;

}

public String getContentType()

{

return contentType;

}

public void setContentType(String contentType)

{

this.contentType = contentType;

}

}