移动资费提示过滤
最近移动对网关进行改造，会弹出一个资费提示的wap页面，干扰了众多手机应用，手机网络游戏的正常运行，仅提供一个移动资费提示过滤的工具类代码，以抛砖引玉
package redduke.game.j2me.io;import java.io.ByteArrayOutputStream;import java.io.DataInputStream;import java.io.DataOutputStream;import java.io.IOException;import java.io.InputStream;import java.io.OutputStream;import java.util.Enumeration;import java.util.Hashtable;import javax.microedition.io.Connector;import javax.microedition.io.HttpConnection;public class HttpUtil{/* * 缺省过滤器实例 */protected static HttpConnectionFilter filter=new HttpConnectionFilter(){public boolean accept(HttpConnection con) {/* 资费提示wap页面长度=438+目的地URL字符串字节长度 */return con!=null && con.getLength()!=438+con.getURL().getBytes().length;}};/** * 打开一个HttpConnection * @param url */public static HttpConnection open(final String url){/* 一个HttpConnection的代理实现 */return new HttpConnection(){/* * 连接 */private javax.microedition.io.HttpConnection con;/* * 连接次数，超过次数则认为连接失败 */private int connectCount=0;/* * 输出缓冲 */private ByteArrayOutputStream baos=new ByteArrayOutputStream(1024);/* * 请求属性 */private Hashtable requestProperties=new Hashtable();/* * 请求方式 */private String method=GET;/* * 连接服务器 */private void connect(){try{if(this.con!=null)this.con.close();}catch(Exception ex){}try{this.con=(javax.microedition.io.HttpConnection)Connector.open(url);this.con.setRequestMethod(this.method);Enumeration propertyKeys=this.requestProperties.keys();while(propertyKeys.hasMoreElements()){String propertyKey=(String)propertyKeys.nextElement();String propertyValue=(String)requestProperties.get(propertyKey);this.con.setRequestProperty(propertyKey,propertyValue);}}catch(Exception ex){this.con=null;}}/* * 确认连接 */private void ensureConnect(){while(this.con==null || filter!=null && !filter.accept(this.con)){if(connectCount>=5)throw new RuntimeException("Connection failed");connectCount++;this.connect();}}public long getDate() throws IOException {ensureConnect();return this.con.getDate();}public long getExpiration() throws IOException {ensureConnect();return this.con.getExpiration();}public String getFile() {ensureConnect();return this.con.getFile();}public String getHeaderField(String arg0) throws IOException {ensureConnect();return this.con.getHeaderField(arg0);}public String getHeaderField(int arg0) throws IOException {ensureConnect();return this.con.getHeaderField(arg0);}public long getHeaderFieldDate(String arg0, long arg1) throws IOException {ensureConnect();return this.con.getHeaderFieldDate(arg0, arg1);}public int getHeaderFieldInt(String arg0, int arg1) throws IOException {ensureConnect();return this.con.getHeaderFieldInt(arg0, arg1);}public String getHeaderFieldKey(int arg0) throws IOException {ensureConnect();return this.con.getHeaderFieldKey(arg0);}public String getHost() {ensureConnect();return this.con.getHost();}public long getLastModified() throws IOException {ensureConnect();return this.con.getLastModified();}public int getPort() {ensureConnect();return this.con.getPort();}public String getProtocol() {ensureConnect();return this.con.getProtocol();}public String getQuery() {ensureConnect();return this.con.getQuery();}public String getRef() {ensureConnect();return this.con.getRef();}public String getRequestMethod() {ensureConnect();return this.con.getRequestMethod();}public String getRequestProperty(String arg0) {ensureConnect();return this.con.getRequestProperty(arg0);}public int getResponseCode() throws IOException {ensureConnect();return this.con.getResponseCode();}public String getResponseMessage() throws IOException {ensureConnect();return this.con.getResponseMessage();}public String getURL() {ensureConnect();return this.con.getURL();}public void setRequestMethod(String arg0) throws IOException {this.method=arg0;}public void setRequestProperty(String arg0, String arg1) throws IOException {requestProperties.put(arg0, arg1);}public String getEncoding() {ensureConnect();return this.con.getEncoding();}public long getLength() {ensureConnect();return this.con.getLength();}public String getType() {ensureConnect();return this.con.getType();}public DataInputStream openDataInputStream() throws IOException {ensureConnect();return this.con.openDataInputStream();}public InputStream openInputStream() throws IOException {ensureConnect();return this.con.openInputStream();}public void close() throws IOException {ensureConnect();this.con.close();}public DataOutputStream openDataOutputStream() throws IOException {return new DataOutputStream(baos);}public OutputStream openOutputStream() throws IOException {return baos;}};}/* * 设置过滤器,可设置自定义过滤器 */public static void setHttpConnectionFilter(HttpConnectionFilter filter){HttpUtil.filter=filter;}/** * 过滤器接口 */public static interface HttpConnectionFilter{boolean accept(HttpConnection con);}}HttpConnection con=HttpUtil.open("http:\\abc.com");protected static HttpConnectionFilter filter=new HttpConnectionFilter() { public boolean accept(HttpConnection con) { /* 资费提示wap页面长度=438+目的地URL字符串字节长度 */ return con!=null && con.getLength()!=438+con.getURL().getBytes().length; } }; 6 楼 ywg_2008 2007-05-25 请问，你这个HttpConnection con=HttpUtil.open("http:\\abc.com"); 放在哪儿，是不是我的过滤器就执行这段代码？谢谢 7 楼 lu_pp 2007-08-22 好像每个地方的大小不一样啊 8 楼 zyhighway 2007-08-25 其实简单的过滤方法是：在网络传送回来的数据流中，判断是否有你访问的网络地址数据串，如果有，就是资费页面，这时候再重新访问一次即可获得正确的数据。我的程序中就是这么做的，应该比较通用吧！