您必须使用HTTPConnetion 将所有连接参数添加到您的网址中。创建一个自定义类来检查连接参数。使用下面的Custom Class。
public class HttpConnectionImpl
extends impl.javame.com.twitterapime.io.HttpConnectionImpl {
private static String appendConnectionParameters;
private static String connectionParameters;
private static ServiceRecord getWAP2ServiceRecord() {
String cid;
String uid;
ServiceBook sb = ServiceBook.getSB();
ServiceRecord[] records = sb.getRecords();
//
for (int i = records.length -1; i >= 0; i--) {
cid = records[i].getCid().toLowerCase();
uid = records[i].getUid().toLowerCase();
//
if (cid.indexOf("wptcp") != -1
&& uid.indexOf("wifi") == -1
&& uid.indexOf("mms") == -1) {
return records[i];
}
}
//
return null;
}
public static String getConnectionParams() {
String connParams = "";
//
if (connectionParameters != null) {
connParams = connectionParameters;
} else {
if (WLANInfo.getWLANState() == WLANInfo.WLAN_STATE_CONNECTED) {
connParams = ";interface=wifi"; //Connected to a WiFi access point.
} else {
int coverageStatus = CoverageInfo.getCoverageStatus();
//
if ((coverageStatus & CoverageInfo.COVERAGE_BIS_B) == CoverageInfo.COVERAGE_BIS_B) {
connParams = ";deviceside=false;ConnectionType=mds-public";
} else if ((coverageStatus & CoverageInfo.COVERAGE_DIRECT) == CoverageInfo.COVERAGE_DIRECT) {
// Have network coverage and a WAP 2.0 service book record
ServiceRecord record = getWAP2ServiceRecord();
//
if (record != null) {
connParams = ";deviceside=true;ConnectionUID=" + record.getUid();
} else {
connParams = ";deviceside=true";
}
} else if ((coverageStatus & CoverageInfo.COVERAGE_MDS) == CoverageInfo.COVERAGE_MDS) {
// Have an MDS service book and network coverage
connParams = ";deviceside=false";
}
}
//
if (appendConnectionParameters != null) {
connParams += appendConnectionParameters;
}
}
//
return connParams;
}
public static void setAppendConnectionParameters(String params) {
if (params != null && !params.startsWith(";")) {
params = ";" + params;
}
//
appendConnectionParameters = params;
}
public static void setConnectionParameters(String params) {
if (params != null && !params.startsWith(";")) {
params = ";" + params;
}
//
connectionParameters = params;
}
public void open(String url) throws IOException {
super.open(url + getConnectionParams());
}
}
集成以上类后，您必须制作一个名称为impl.javame.com.twitterapime.io 的包并添加以下类。
`package impl.javame.com.twitterapime.io;
导入 java.io.IOException；
导入 java.io.InputStream；
导入 java.io.OutputStream；
导入 javax.microedition.io.Connector；
导入 com.twitterapime.io.HttpConnection;
公共类 HttpConnectionImpl 实现 HttpConnection {
私有 javax.microedition.io.HttpConnection httpConn;
public void open(String url) throws IOException {
httpConn =
(javax.microedition.io.HttpConnection)
Connector.open(url, Connector.READ_WRITE, true);
}
public void close() throws IOException {
httpConn.close();
}
public int getResponseCode() throws IOException {
return httpConn.getResponseCode();
}
public InputStream openInputStream() throws IOException {
return httpConn.openInputStream();
}
public OutputStream openOutputStream() throws IOException {
return httpConn.openOutputStream();
}
public void setRequestMethod(String method) throws IOException {
httpConn.setRequestMethod(method);
}
public void setRequestProperty(String key, String value) throws IOException{
httpConn.setRequestProperty(key, value);
}
public String getRequestProperty(String key) throws IOException {
return httpConn.getRequestProperty(key);
}
public String getHeaderField(String name) throws IOException {
return httpConn.getHeaderField(name);
}
}`
现在你必须整合另外两个类
- HttpConnection
- HttpResponsein
com.twitterapime.io 包。
`包com.twitterapime.io；
导入 java.io.IOException；
导入 java.io.InputStream；
导入 java.io.OutputStream；
公共接口 HttpConnection {
public static final String GET = "GET";
public static final String POST = "POST";
public static final String HEAD = "HEAD";
public static final int HTTP_OK = 200;
public static final int HTTP_FORBIDDEN = 403;
public static final int HTTP_UNAVAILABLE = 503;
public static final int HTTP_NOT_MODIFIED = 304;
public static final int HTTP_BAD_REQUEST = 400;
public static final int HTTP_UNAUTHORIZED = 401;
public static final int HTTP_NOT_FOUND = 404;
public static final int HTTP_NOT_ACCEPTABLE = 406;
public static final int HTTP_INTERNAL_ERROR = 500;
public static final int HTTP_BAD_GATEWAY = 502;
public void open(String url) throws IOException;
public void close() throws IOException;
public int getResponseCode() throws IOException;
public InputStream openInputStream() throws IOException;
public OutputStream openOutputStream() throws IOException;
public void setRequestMethod(String method) throws IOException;
public void setRequestProperty(String key, String value) throws IOException;
public String getRequestProperty(String key) throws IOException;
public String getHeaderField(String name) throws IOException;
Bwlow 是 HttpResponse 类`
`包com.twitterapime.io;
导入 java.io.ByteArrayOutputStream;
导入 java.io.IOException；
导入 java.io.InputStream；
导入 java.io.UnsupportedEncodingException;
公共最终类 HttpResponse {
私有 int 代码；
private String body;
private InputStream stream;
private HttpConnection conn;
HttpResponse(HttpConnection conn) throws IOException {
this.conn = conn;
code = conn.getResponseCode();
stream = conn.openInputStream();
}
public boolean wasSuccessful() {
return code >= 200 && code < 400;
}
public String getBodyContent() throws IOException {
return body != null ? body : (body = parseBody(stream));
}
public InputStream getStream() {
return stream;
}
public int getCode() {
return code;
}
public String getResponseField(String key) throws IOException {
return conn.getRequestProperty(key);
}
private String parseBody(InputStream in) throws IOException {
if (in == null) {
return null;
}
//
ByteArrayOutputStream out = new ByteArrayOutputStream(1024);
byte[] buffer = new byte[1024];
//
for (int n; (n = in.read(buffer)) > 0;) {
out.write(buffer, 0, n);
}
//
try {
return new String(out.toByteArray(), "UTF-8");
} catch (UnsupportedEncodingException e) {
throw new IOException(e.getMessage());
}
}
}`
使用以下方法检查您的连接参数。此方法会自动检查您的设备连接可用性并根据您的连接添加连接参数。
protected HttpConnection getConnection(String url) throws IOException {
url += HttpConnectionImpl.getConnectionParams();
//
return (HttpConnection)Connector.open(url);
}
上面的HttpConnection 方法返回带有连接参数的 URL .. 比你可以在你的 InputStream 中使用这个连接并打开任何 url 以及 web 服务。
希望对你有帮助……