在启动web services的时候能不能自动初始化web services对应类里的变量？

老问题，可以写个简单的Servlet，将处理内容放到init方法中。

解决方案 »

  1.   

    如果是操作是静态的，那么写一个Servlet、filter或者listener在初始化的时候做就可以了。
      

  2.   

    我写了一个Servlet，把初始化的内容放到了init方法中，但结果还是不行啊SysInitServlet.java
    public class SysInitServlet extends HttpServlet {
      private static final String CONTENT_TYPE = "text/html; charset=GBK";  //Initialize global variables
      public void init() throws ServletException {
        //初始化用户全县数据
        System.out.println("asdfasd");
        SecurityServices ss = new SecurityServices();
      }
      //Process the HTTP Get request
      public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        response.setContentType(CONTENT_TYPE);
        PrintWriter out = response.getWriter();
        out.println("<html>");
        out.println("<head><title>SysInitServlet</title></head>");
        out.println("<body bgcolor=\"#ffffff\">");
        out.println("<p>The servlet has received a GET. This is the reply.</p>");
        out.println("</body></html>");
      }
      //Clean up resources
      public void destroy() {
      }
    }
    web.xml<?xml version="1.0" encoding="UTF-8"?>
    <!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd">
    <web-app>
      <servlet>
        <servlet-name>AdminServlet</servlet-name>
        <display-name>Axis Admin Servlet</display-name>
        <servlet-class>org.apache.axis.transport.http.AdminServlet</servlet-class>
      </servlet>
      <servlet>
        <servlet-name>AxisServlet</servlet-name>
        <display-name>Apache-Axis Servlet</display-name>
        <servlet-class>org.apache.axis.transport.http.AxisServlet</servlet-class>
      </servlet>
      <servlet>
        <servlet-name>SOAPMonitorService</servlet-name>
        <display-name>SOAP Monitor Service</display-name>
        <servlet-class>org.apache.axis.monitor.SOAPMonitorService</servlet-class>
        <init-param>
          <param-name>SOAPMonitorPort</param-name>
          <param-value>5001</param-value>
        </init-param>
      </servlet>
      <servlet>
        <servlet-name>sysinitservlet</servlet-name>
        <servlet-class>com.boco.ip.util.servlet.SysInitServlet</servlet-class>
      </servlet>
      <servlet-mapping>
        <servlet-name>AxisServlet</servlet-name>
        <url-pattern>*.jws</url-pattern>
      </servlet-mapping>
      <servlet-mapping>
        <servlet-name>SOAPMonitorService</servlet-name>
        <url-pattern>/SOAPMonitor</url-pattern>
      </servlet-mapping>
      <servlet-mapping>
        <servlet-name>AxisServlet</servlet-name>
        <url-pattern>/services/*</url-pattern>
      </servlet-mapping>
      <servlet-mapping>
        <servlet-name>AdminServlet</servlet-name>
        <url-pattern>/servlet/AdminServlet</url-pattern>
      </servlet-mapping>
      <servlet-mapping>
        <servlet-name>AxisServlet</servlet-name>
        <url-pattern>/servlet/AxisServlet</url-pattern>
      </servlet-mapping>
      <servlet-mapping>
        <servlet-name>sysinitservlet</servlet-name>
        <url-pattern>/sysinitservlet</url-pattern>
      </servlet-mapping>
    </web-app>