???????????????? 在项目启动的时候需要启动相关的activiti服务，在activiti通过使用servletcontextlistener实现在项目启动相关的服务。
package org.activiti.rest.servlet;
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import java.util.logging.Level;
import java.util.logging.Logger;
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import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;
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import org.activiti.engine.ProcessEngine;
import org.activiti.engine.ProcessEngines;
import org.activiti.engine.impl.util.LogUtil;
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/**
?* @author Tijs Rademakers
?*/
public class ActivitiServletContextListener implements ServletContextListener {
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? //Initialise logging
? static {
??? LogUtil.readJavaUtilLoggingConfigFromClasspath();
? }
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? protected static final Logger LOGGER = Logger.getLogger(ActivitiServletContextListener.class.getName());
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? public void contextInitialized(ServletContextEvent event) {
??? ProcessEngine processEngine = ProcessEngines.getDefaultProcessEngine();
??? if (processEngine == null) {
????? LOGGER.log(Level.SEVERE,"Could not start the Activiti Engine");
??? }
? }
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? public void contextDestroyed(ServletContextEvent event) {
??? ProcessEngines.destroy();
? }
?
}
web.xml配置如下：
<?xml version="1.0" encoding="UTF-8"?>?
<web-app id="WebApp_ID" version="2.4"?
??????????? xmlns="http://java.sun.com/xml/ns/j2ee"?
??????????? xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"?
??????????? xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee?
???????????????? http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">?
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? <display-name>Activiti REST</display-name>
??
? <listener>
??? <listener-class>org.activiti.rest.servlet.ActivitiServletContextListener</listener-class>
? </listener>
?
? <!-- Restlet adapter -->?
? <servlet>?
??? <servlet-name>RestletServlet</servlet-name>?
??? <servlet-class>org.restlet.ext.servlet.ServerServlet</servlet-class>
??? <init-param>
????? <!-- Application class name -->
????? <param-name>org.restlet.application</param-name>
????? <param-value>org.activiti.rest.application.ActivitiRestApplication</param-value>
??? </init-param>
? </servlet>
?
? <!-- Catch all requests -->?
? <servlet-mapping>?
??? <servlet-name>RestletServlet</servlet-name>?
? ??<url-pattern>/service/*</url-pattern>?
? </servlet-mapping>?
</web-app>
?