import org.apache.velocity.context.InternalContextAdapter;
import org.apache.velocity.exception.MethodInvocationException;
import org.apache.velocity.exception.ParseErrorException;
import org.apache.velocity.exception.ResourceNotFoundException;
import org.apache.velocity.exception.TemplateInitException;
import org.apache.velocity.runtime.RuntimeServices;
import org.apache.velocity.runtime.directive.Directive;
import org.apache.velocity.runtime.parser.node.Node;
import org.springframework.web.context.WebApplicationContext;
import org.springframework.web.context.support.WebApplicationContextUtils;import javax.servlet.ServletContext;
import java.io.IOException;
import java.io.Writer;public class OrderSourceSelectDirective extends Directive {private  RuleFacadeService ruleFacadeService;//业务service@Overridepublic void init(RuntimeServices rs, InternalContextAdapter context, Node node) throws TemplateInitException {super.init(rs, context, node);ServletContext sc = (ServletContext) rs.getApplicationAttribute("javax.servlet.ServletContext");   //获取servlet上下文容器WebApplicationContext webApplicationContext = WebApplicationContextUtils.getWebApplicationContext(sc);//获取spring上下文容器this.ruleFacadeService =  webApplicationContext.getBean(RuleFacadeService.class);  //从spring容器中取出service层实例，设值此反射创建的自定义标签类实例中}/*** 标签名*/@Overridepublic String getName() {return "orderSourceSelect";}/*** 标签类型* LINE: 不要#end结束符，* BLOCK:需要#end结束符*/@Overridepublic int getType() {return LINE;}/*** 标签输出内容*/@Overridepublic boolean render(InternalContextAdapter context, Writer writer, Node node) throws IOException, ResourceNotFoundException, ParseErrorException, MethodInvocationException {System.out.println(ruleFacadeService); //业务servicereturn true;}}