1.对于常规的网址如： http开头的：
URL oracle = new URL( url); String test = oracle.toExternalForm(); String test1 = oracle.toString(); URI oracle1 = null; try { oracle1 = oracle.toURI(); } catch (URISyntaxException e) { // TODO Auto-generated catch block e.printStackTrace(); } BufferedReader in = new BufferedReader( new InputStreamReader(oracle.openStream())); String inputLine; String inputLine2 = ""; while ((inputLine = in.readLine()) != null) inputLine2 +=inputLine; in.close();
2.对加密网址：如https: (特别是需要证书的）
solution:取消所有证书的检测
package s.s.d; import java.io.DataInputStream; import java.io.DataOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.net.HttpURLConnection; import java.net.ProtocolException; import java.net.URL; import java.security.GeneralSecurityException; import java.security.SecureRandom; import java.security.cert.X509Certificate; import java.util.List; import java.util.Map; import javax.net.ssl.HostnameVerifier; import javax.net.ssl.HttpsURLConnection; import javax.net.ssl.SSLContext; import javax.net.ssl.TrustManager; import javax.net.ssl.X509TrustManager; import org.apache.http.HttpConnectionMetrics; public class AndroidHttpConnection implements ChunkedHttpConnection { HttpURLConnection _conn; Map<String, List<String>> _headers; private static HostnameVerifier _hostnameVerifier; private static TrustManager[] _trustManagers; static { trustAllHostnames(); trustAllHttpsCertificates(); } public static class FakeHostnameVerifier implements HostnameVerifier { public boolean verify(String hostname, javax.net.ssl.SSLSession session) { return ( true); } } private static void trustAllHostnames() { if (_hostnameVerifier == null) { _hostnameVerifier = new FakeHostnameVerifier(); } HttpsURLConnection.setDefaultHostnameVerifier(_hostnameVerifier); } public static class FakeX509TrustManager implements X509TrustManager { private static final X509Certificate[] _AcceptedIssuers = new X509Certificate[] {}; public void checkClientTrusted(X509Certificate[] chain, String authType) { } public void checkServerTrusted(X509Certificate[] chain, String authType) { } public X509Certificate[] getAcceptedIssuers() { return (_AcceptedIssuers); } } private static void trustAllHttpsCertificates() { SSLContext context; // Create a trust manager that does not validate certificate chains if (_trustManagers == null) { _trustManagers = new TrustManager[] { new FakeX509TrustManager() }; } try { context = SSLContext.getInstance("TLS"); context.init( null, _trustManagers, new SecureRandom()); } catch (GeneralSecurityException gse) { throw new IllegalStateException(gse.getMessage()); } HttpsURLConnection.setDefaultSSLSocketFactory(context .getSocketFactory()); } public AndroidHttpConnection(URL url) throws IOException { if (!"http".equalsIgnoreCase(url.getProtocol()) && !"https".equalsIgnoreCase(url.getProtocol())) throw new ProtocolException("Protocol " + url.getProtocol() + " doesn't support output"); _conn = (HttpURLConnection)url.openConnection(); _conn.setRequestMethod("GET"); _conn.setRequestProperty("Accept", "application/xml"); _conn.setRequestProperty("Accept-Language", "en-us,en;q=0.5"); // c.setRequestProperty("Accept-Encoding", "gzip,deflate"); _conn.setRequestProperty("Accept-Charset", "ISO-8859-1,utf-8;q=0.7,*;q=0.5"); _conn.setRequestProperty("Keep-Alive", "300"); _conn.setRequestProperty("Connection", "keep-alive"); // _conn.connect(); // _conn.setAllowUserInteraction(false); _conn.setUseCaches( true); _conn.setInstanceFollowRedirects( false); _conn.setDoOutput( true); } public AndroidHttpConnection(String url) throws IOException { this( new URL(url)); } public long getDate() throws IOException { return _conn.getDate(); } public long getExpiration() throws IOException { return _conn.getExpiration(); } public String getFile() { return _conn.getURL().getFile(); } public Map<String, List<String>> getHeaders() { if (_headers == null) _headers = _conn.getHeaderFields(); return _headers; } public String getHeaderField(String name) throws IOException { getHeaders(); List<String> result = (List<String>)_headers.get(name.toLowerCase()); if (result != null) return result.get(result.size()-1); return null; } public String getHeaderField( int n) throws IOException { return _conn.getHeaderField(n); } public long getHeaderFieldDate(String name, long def) throws IOException { return _conn.getHeaderFieldDate(name, def); } public int getHeaderFieldInt(String name, int def) throws IOException { return _conn.getHeaderFieldInt(name, def); } public String getHeaderFieldKey( int n) throws IOException { return _conn.getHeaderFieldKey(n); } public String getHost() { return _conn.getURL().getHost(); } public long getLastModified() throws IOException { return _conn.getLastModified(); } public int getPort() { return _conn.getURL().getPort(); } public String getProtocol() { return _conn.getURL().getProtocol(); } public String getQuery() { return _conn.getURL().getQuery(); } public String getRef() { return _conn.getURL().getRef(); } public String getRequestMethod() { return _conn.getRequestMethod(); } public String getRequestProperty(String key) { return _conn.getRequestProperty(key); } public int getResponseCode() throws IOException { // getHeaders(); return _conn.getResponseCode(); } public String getResponseMessage() throws IOException { // getHeaders(); return _conn.getResponseMessage(); } public String getURL() { return _conn.getURL().toString(); } public void setRequestMethod(String method) throws IOException { _conn.setRequestMethod(method); } public void setRequestProperty(String key, String value) throws IOException { if (key.equalsIgnoreCase("Transfer-Encoding") && value.equalsIgnoreCase("chunked")) _conn.setChunkedStreamingMode(0); _conn.setRequestProperty(key, value); } public String getEncoding() { return _conn.getContentEncoding(); } public long getLength() { return _conn.getContentLength(); } public String getType() { return _conn.getContentType(); } protected InputStream _is; protected DataInputStream _dis; public DataInputStream openDataInputStream() throws IOException { if (_dis == null) _dis = new DataInputStream(openInputStream()); return _dis; } public InputStream openInputStream() throws IOException { if (_is == null) { // if (_conn.getResponseCode() >= HttpURLConnection.HTTP_BAD_REQUEST) // { // _is = _conn.getErrorStream(); // } // else { _is = _conn.getInputStream(); } } return _is; } public void close() throws IOException { _conn.disconnect(); } protected OutputStream _os; protected DataOutputStream _dos; public DataOutputStream openDataOutputStream() throws IOException { if (_dos == null) _dos = new DataOutputStream(openOutputStream()); return _dos; } public OutputStream openOutputStream() throws IOException { if (_os == null) _os = _conn.getOutputStream(); return _os; } /* public void setAuthenticator(final Authenticator auth) { java.net.Authenticator.setDefault(new java.net.Authenticator(){ java.net.PasswordAuthentication _pa = null; protected java.net.PasswordAuthentication getPasswordAuthentication() { if (_pa == null) { char[] pass = null; PasswordAuthentication pa = auth.onAuthenticationChallenge(this.getRequestingPrompt(), true, true); if(pa.getPassword() != null) { pass = new char[pa.getPassword().length]; for(int i = 0; i < pass.length; i++) pass[i] = (char)pa.getPassword()[i]; } _pa = new java.net.PasswordAuthentication(new String(pa.getUserName()), pass); } return _pa; } }); } */ public InputStream openChunkedInputStream() throws IOException { return openInputStream(); } public OutputStream openChunkedOutputStream( int cacheLength) throws IOException { _conn.setChunkedStreamingMode(cacheLength); return openOutputStream(); } public HttpConnectionMetrics getMetrics() { // TODO Auto-generated method stub return null; } public int getSocketTimeout() { // TODO Auto-generated method stub return 0; } public boolean isOpen() { // TODO Auto-generated method stub return false; } public boolean isStale() { // TODO Auto-generated method stub return false; } public void setSocketTimeout( int arg0) { // TODO Auto-generated method stub } public void shutdown() throws IOException { // TODO Auto-generated method stub } }
2).
package s.s.d; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import org.apache.http.HttpConnection; public interface ChunkedHttpConnection extends HttpConnection { public InputStream openChunkedInputStream() throws IOException; public OutputStream openChunkedOutputStream( int cacheLength) throws IOException; }
3).主题部分：
AndroidHttpConnection con = new AndroidHttpConnection(url); // con.setRequestMethod("GET"); Map<String, List<String>> headers = con.getHeaders(); int count = headers.size(); String value = con.getResponseMessage(); InputStream is = con.openInputStream(); // OutputStream os = con.openOutputStream(); // os.write(buffer, offset, count) BufferedReader in = new BufferedReader( new InputStreamReader(is)); String inputLine; String htmlCode = ""; try { while ((inputLine = in.readLine()) != null) { htmlCode += inputLine; // Log.d(LOG_TAG, "html: " + inputLine); } in.close(); } catch (Exception e) { e.printStackTrace(); // Log.d(LOG_TAG, "Error: " + e.getMessage()); // Log.d(LOG_TAG, "HTML CODE: " + htmlCode); }
网上搜索了一下：
1）.
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