handler.java

learning java的源代码。书中每个实例都有相关的代码example。

//file: Handler.java
package learningjava.protocolhandlers.crypt;
import java.io.*;
import java.net.*;

public class Handler extends URLStreamHandler {

    protected void parseURL(URL url, String spec,
                            int start, int end) {
        int slash = spec.indexOf('/');
        String crypType = spec.substring(start, slash-1);
        super.parseURL(url, spec, slash, end);
        setURL( url, "crypt:"+crypType, url.getHost(  ),
            url.getPort(), url.getFile(), url.getRef(  ) );
    }

    protected URLConnection openConnection(URL url)
      throws IOException {
        String crypType = url.getProtocol(  ).substring(6);
        return new CryptURLConnection( url, crypType );
    }
}