Java HttpConnection类代码示例

import javax.microedition.io.HttpConnection; //导入依赖的package包/类
protected Object getInvokeContext() throws IOException {
    HttpConnection conn = (HttpConnection)Connector.open(uri, Connector.READ_WRITE);
    if (keepAlive) {
        conn.setRequestProperty("Connection", "Keep-Alive");
        conn.setRequestProperty("Keep-Alive", Integer.toString(keepAliveTimeout));
    }
    else {
        conn.setRequestProperty("Connection", "Close");
    }
    conn.setRequestProperty("Cookie", cookieManager.getCookie(conn.getHost(),
                                                              conn.getFile(),
                                                              conn.getProtocol().equals("https")));
    for (Enumeration e = headers.keys(); e.hasMoreElements();) {
        String key = (String) e.nextElement();
        conn.setRequestProperty(key, (String) headers.get(key));
    }
    return conn;
}
 

import javax.microedition.io.HttpConnection; //导入依赖的package包/类
protected InputStream getInputStream(Object context) throws IOException {
    HttpConnection conn = (HttpConnection) context;
    int i = 1;
    String key = null;
    Vector cookieList = new Vector();
    while((key=conn.getHeaderFieldKey(i)) != null) {
        if (key.toLowerCase().equals("set-cookie") ||
            key.toLowerCase().equals("set-cookie2")) {
            cookieList.addElement(conn.getHeaderField(i));
        }
        i++;
    }
    cookieManager.setCookie(cookieList, conn.getHost());
    InputStream istream = conn.openInputStream();
    return istream;
}
 

import javax.microedition.io.HttpConnection; //导入依赖的package包/类
protected Object getInvokeContext() throws IOException {
    HttpConnection conn = (HttpConnection)Connector.open(uri, Connector.READ_WRITE);
    if (keepAlive) {
        conn.setRequestProperty("Connection", "Keep-Alive");
        conn.setRequestProperty("Keep-Alive", Integer.toString(keepAliveTimeout));
    }
    else {
        conn.setRequestProperty("Connection", "Close");
    }
    conn.setRequestProperty("Cookie", cookieManager.getCookie(conn.getHost(),
                                                              conn.getFile(),
                                                              conn.getProtocol().equals("https")));
    for (Iterator iter = headers.entrySet().iterator(); iter.hasNext();) {
        Entry entry = (Entry) iter.next();
        conn.setRequestProperty((String) entry.getKey(), (String) entry.getValue());
    }
    return conn;
}
 

import javax.microedition.io.HttpConnection; //导入依赖的package包/类
protected InputStream getInputStream(Object context) throws IOException {
    HttpConnection conn = (HttpConnection) context;
    int i = 1;
    String key = null;
    ArrayList cookieList = new ArrayList();
    while((key=conn.getHeaderFieldKey(i)) != null) {
        if (key.equalsIgnoreCase("set-cookie") ||
            key.equalsIgnoreCase("set-cookie2")) {
            cookieList.add(conn.getHeaderField(i));
        }
        i++;
    }
    cookieManager.setCookie(cookieList, conn.getHost());
    InputStream istream = conn.openInputStream();
    return istream;
}
 

import javax.microedition.io.HttpConnection; //导入依赖的package包/类
/**
 * @inheritDoc
 */
public String[] getHeaderFieldNames(Object connection) throws IOException {
    HttpConnection c = (HttpConnection)connection;
    Vector r = new Vector();
    int i = 0;
    String key = c.getHeaderFieldKey(i);
    while (key != null) {
        if(r.indexOf(key) < 0) {
            r.addElement(key);
        }
        i++;
        key = c.getHeaderFieldKey(i);
    }
    
    if(r.size() == 0) {
        return null;
    }
    String[] response = new String[r.size()];
    for(int iter = 0 ; iter < response.length ; iter++) {
        response[iter] = (String)r.elementAt(iter);
    }
    return response;
}
 

import javax.microedition.io.HttpConnection; //导入依赖的package包/类
/**
 * @inheritDoc
 */
public String[] getHeaderFields(String name, Object connection) throws IOException {
    HttpConnection c = (HttpConnection) connection;
    Vector r = new Vector();
    int i = 0;
    while (c.getHeaderFieldKey(i) != null) {
        if (c.getHeaderFieldKey(i).equalsIgnoreCase(name)) {
            String val = c.getHeaderField(i);
            r.addElement(val);
        }
        i++;
    }

    if (r.size() == 0) {
        return null;
    }
    String[] response = new String[r.size()];
    for (int iter = 0; iter < response.length; iter++) {
        response[iter] = (String) r.elementAt(iter);
    }
    return response;
}
 

import javax.microedition.io.HttpConnection; //导入依赖的package包/类
public static String getChallenge(HttpConnection connection ) throws IOException {
    final String AUTH_HEADER_HACK = "X-S60-Auth";

    //technically the standard

    String challenge = null;
    if (challenge == null) {
        challenge = connection.getHeaderField(AUTH_HEADER_HACK);
    }
    if (challenge == null) {
        challenge = connection.getHeaderField(AUTH_HEADER_HACK.toLowerCase());
    }
    if (challenge == null) {
        challenge = connection.getHeaderField("WWW-Authenticate");
    }
    if(challenge == null) {
        challenge = connection.getHeaderField("www-authenticate");
    }

    return challenge;
}
 

import javax.microedition.io.HttpConnection; //导入依赖的package包/类
public static HttpRequestProperties HttpResponsePropertyFactory(HttpConnection conn) throws IOException {
    HttpRequestProperties ret = new HttpRequestProperties();

    String[] expectedHeaders = new String [] { "Content-Language", "X-OpenRosa-Version"};

    ret.date = conn.getHeaderFieldDate("Date", 0);
    if(ret.date == 0) {
        ret.date = conn.getHeaderFieldDate("date", 0);
    }

    for(String header : expectedHeaders) {
        ret.setRequestProperty(header, getHeaderHelper(conn, header));
    }

    return ret;
}
 

import javax.microedition.io.HttpConnection; //导入依赖的package包/类
/**
 * Reads the content from the specified HTTP URL and returns InputStream
 * where the contents are read.
 * 
 * @return InputStream
 * @throws IOException
 */
private InputStream urlToStream(String url) throws IOException {
    // Open connection to the http url...
    HttpConnection connection = (HttpConnection) Connector.open(url);
    DataInputStream dataIn = connection.openDataInputStream();
    byte[] buffer = new byte[1000];
    int read = -1;
    // Read the content from url.
    ByteArrayOutputStream byteout = new ByteArrayOutputStream();
    while ((read = dataIn.read(buffer)) >= 0) {
        byteout.write(buffer, 0, read);
    }
    dataIn.close();
    // Fill InputStream to return with content read from the URL.
    ByteArrayInputStream byteIn = new ByteArrayInputStream(byteout.toByteArray());
    return byteIn;
}
 

import javax.microedition.io.HttpConnection; //导入依赖的package包/类
/**
 * Reads the content from the specified HTTP URL and returns InputStream
 * where the contents are read.
 * 
 * @return InputStream
 * @throws IOException
 */
private InputStream urlToStream(String url) throws IOException {
    // Open connection to the http url...
    HttpConnection connection = (HttpConnection) Connector.open(url);
    DataInputStream dataIn = connection.openDataInputStream();
    byte[] buffer = new byte[1000];
    int read = -1;
    // Read the content from url.
    ByteArrayOutputStream byteout = new ByteArrayOutputStream();
    while ((read = dataIn.read(buffer)) >= 0) {
        byteout.write(buffer, 0, read);
    }
    dataIn.close();
    connection.close();
    // Fill InputStream to return with content read from the URL.
    ByteArrayInputStream byteIn = new ByteArrayInputStream(byteout.toByteArray());
    return byteIn;
}
 

import javax.microedition.io.HttpConnection; //导入依赖的package包/类
public static void submitBug(Location location, String text, String user) {
    String url = API_URL + "addPOIexec?lat=" + location.getY() + "&lon=" + location.getX()
            + "&text=" + urlEncode(text) + "&format=js";
    try {
        HttpConnection httpConn = (HttpConnection) Connector.open(url);
        ByteArrayOutputStream reply = new ByteArrayOutputStream();
        InputStream in = httpConn.openDataInputStream();
        for (int b = in.read(); b != -1; b = in.read()) {
            reply.write(b);
        }
        in.close();
        System.out.println("OpenStreetBugs reply: " + reply.toString());
    } catch (IOException ex) {
        ex.printStackTrace();
    }
}
 

import javax.microedition.io.HttpConnection; //导入依赖的package包/类
private static String getResponseAsSting(HttpConnection conn) throws IOException {
    String result = "";
    InputStream inputStream = null;
    try {
        inputStream =  conn.openInputStream();
        int len;
        byte[] data = new byte[512];
        do {
            len = inputStream.read(data);
            if(len > 0){
                result += new String(data, 0, len);
            }
        } while(len > 0);
    } catch (Exception e) {
        if (e instanceof IOException) {
            throw (IOException)e;
        }
    } finally { 
        safelyCloseStream(inputStream); 
    }
    return result;
}
 

import javax.microedition.io.HttpConnection; //导入依赖的package包/类
private static String getEncoding(HttpConnection c) throws IOException {
  String enc = "ISO-8859-1";
  String contentType = c.getHeaderField("Content-Type");
  if (contentType != null) {
    String prefix = "charset=";
    int beginIndex = contentType.indexOf(prefix);
    if (beginIndex != -1) {
      beginIndex += prefix.length();
      int endIndex = contentType.indexOf(';', beginIndex);
      if (endIndex != -1) {
        enc = contentType.substring(beginIndex, endIndex);
      } else {
        enc = contentType.substring(beginIndex);
      }
    }
  }
  return enc.trim();
}
 

import javax.microedition.io.HttpConnection; //导入依赖的package包/类
public void postCellPosition(String cellID, String mcc, String mnc, String lac, double latitude, double longitude, long ts) {
    try {
        final String url
                = URL + "?method=celldb.addcell &" + ACCOUNT +
                        "&mcc=" + mcc +
                        "&mnc=" + mnc +
                        "&cellid=" + cellID +
                        "&lac=" + lac +
                        "&latitude=" + latitude +
                        "&longitude=" + longitude +
                        "&enduserid=" + controller.getLogin();
        controller.log(url);

        HttpConnection cnx = (HttpConnection) Connector.open(url);
        InputStream is = cnx.openInputStream();
        StringBuffer b = new StringBuffer();
        int car;
        while ((car = is.read()) != -1) {
            b.append((char) car);
        }
        is.close();
        cnx.close();
    } catch (IOException e) {
        controller.log(e.getClass().getName() + ": " + e.getMessage());
    }
}
 

import javax.microedition.io.HttpConnection; //导入依赖的package包/类
public void postCellPosition(String cellID, String mcc, String mnc, String lac, double latitude, double longitude, long ts) {
    try {
        final String url = URL + "measure/add" + KEY +
                        "&mcc=" + mcc +
                        "&mnc=" + mnc +
                        "&cellid=" + cellID +
                        "&lac=" + lac +
                        "&lat=" + latitude +
                        "&lon=" + longitude;
        controller.log(url);

        HttpConnection cnx = (HttpConnection) Connector.open(url);
        InputStream is = cnx.openInputStream();

        StringBuffer b = new StringBuffer();
        int car;
        while ((car = is.read()) != -1) {
            b.append((char) car);
        }
        is.close();
        cnx.close();
    } catch (IOException e) {
        controller.log(e.getClass().getName() + ": " + e.getMessage());
    }
}