TOMCAT4 简单Context
Context 代表一个WEB应用

Mapper用于定位到相应的Wrapper
public final class Bootstrap2 {  public static void main(String[] args) {    HttpConnector connector = new HttpConnector();    Wrapper wrapper1 = new SimpleWrapper();    wrapper1.setName("Primitive");    wrapper1.setServletClass("PrimitiveServlet");    Wrapper wrapper2 = new SimpleWrapper();    wrapper2.setName("Modern");    wrapper2.setServletClass("ModernServlet");    Context context = new SimpleContext();    context.addChild(wrapper1);    context.addChild(wrapper2);    Valve valve1 = new HeaderLoggerValve();    Valve valve2 = new ClientIPLoggerValve();    ((Pipeline) context).addValve(valve1);    ((Pipeline) context).addValve(valve2);    Mapper mapper = new SimpleContextMapper();    mapper.setProtocol("http");    context.addMapper(mapper);    Loader loader = new SimpleLoader();    context.setLoader(loader);    // context.addServletMapping(pattern, name);    context.addServletMapping("/Primitive", "Primitive");    context.addServletMapping("/Modern", "Modern");    connector.setContainer(context);    try {      connector.initialize();      connector.start();      // make the application wait until we press a key.      System.in.read();    }    catch (Exception e) {      e.printStackTrace();    }  }}