if (service_type.equalsIgnoreCase(Constant.CASETYPE_HTTP)) {
siclient = new HttpServiceClientImpl();
} else if (service_type.equalsIgnoreCase(Constant.CASETYPE_SOAP)) {
siclient = new SoapServiceClientImpl();
} else if (service_type.equalsIgnoreCase(Constant.CASETYPE_JSON)) {
siclient = new JsonRpcServiceClientImpl();
} else if (service_type.equalsIgnoreCase(Constant.CASETYPE_HTTPINVOKER)) {
siclient = new HttpInvokerServiceClientImpl();
}
}