linux suse11在terminal可以正常登录进行各种操作,在tomcat运行jdbc web程序异常: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failureThe last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packe
WebWorker简单应用 先从一个简单例子说起,计算数值加法 <script> var worker = new Worker('sumCalculate.js'); worker.onmessage = function (event) { alert('The sum is ' + event.data); } function calculate() { var num = parseInt(document.getElementById('num').value, 10); work