java adsl 自动拔号！

蜘蛛服务器放在内网，用adsl拨号，老断网，自己编写了个自动拨号的程序，方法思路和大家分享一下！

Rasdial.java：

    public void runbat() {
        String cmd = "cmd /c start D:/rasdial.bat";
        try {
            Process ps = Runtime.getRuntime().exec(cmd);
            System.out.println(ps.getInputStream());
        } catch (IOException ioe) {
            ioe.printStackTrace();
        }

    }

    public void work() {
        try {
            InetAddress ad = InetAddress.getByName("119.75.217.56");
            boolean state = ad.isReachable(5000); // 测试是否可以达到该地址
            if (state) {
                System.err.println("连接" + ad.getHostAddress() + "成功...");
            } else {
                System.err.println("连接" + ad.getHostAddress() + "失败！尝试重新拨号....");
                runbat();
            }
        } catch (IOException ioe) {
            System.err.println("重新拨号失败...");
            ioe.printStackTrace();
        }
    }

rasdial.bat文件（windows rasdial 命令）

rasdial.exe  /disconnect
rasdial.exe  连接名 用户名 密码

定时器：

<!-- 重新拨号-->
    <bean id="Rasdial" class="*.*.*.*.Rasdial">
    </bean>
    <bean id="jobDetailRasdial" class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">
        <property name="targetObject" ref="Rasdial" />
        <property name="targetMethod" value="run" />
        <property name="concurrent" value="false" />
    </bean>
    <bean id="cronTriggerRasdial" class="org.springframework.scheduling.quartz.CronTriggerBean">
        <property name="jobDetail" ref="jobDetailRasdial" />
        <property name="cronExpression" value="0 0/30 * * * ?" />
        <property name="startDelay" value="4000" />
    </bean>


    <!-- 执行触发器  -->
    <bean id="schedulerFactory"
        class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
        <property name="triggers">
            <list>

                <!-- 拨号 -->
                <ref bean="cronTriggerRasdial" />
            </list>
        </property>
    </bean>