知识大全 js调用后台servlet方法实例

Posted 2022-07-19 知

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相关源码如下 * js [javascript] 代码如下: <span > </span> document getElementById("sendPerson") value = SendPerson; document getElementById("currentTime") value = currentTime(); document getElementById("message") value = message; document getElementById("recvPerson") value = recvPerson; document chatform action = "ToHistoryServlet"; document chatform submit(); * [] 代码如下: <! the tag below is the params to the userHistory dml@ > <input type=hidden name=sendPerson id="sendPerson"> <input type=hidden name=currentTime id="currentTime"> <input type=hidden name=message id="message"> <input type=hidden name=recvPerson id="recvPerson"> 注意的是 input需指定name属性这么servlet才可以获取到参数值 * java [java] 代码如下: public void doPost(HttpServletRequest request HttpServletResponse response) throws ServletException IOException cto String sendPerson = request getParameter("sendPerson"); String recvPerson = request getParameter("recvPerson"); String sendTime = request getParameter("currentTime"); String message = request getParameter("message"); Message msg = new Message(); msg setMessage(message); msg setRecvPerson(recvPerson); msg setSendPerson(sendPerson); msg setSendTime(sendTime); HistoryHandle addMessage(msg); 这个缺点是页面就跳走了要是希望保持原页面可以参照方法 jquery调用后台方法 [javascript] 代码如下: $ ajax( type : "POST" contentType : "application/json" url : "ToHistoryServlet?sendPerson=" + SendPerson + "¤tTime=" + currentTime() + "&message=" + message + "&recvPerson=" + recvPerson dataType : json success : function(result) alert(result d); ); cha138/Article/program/Java/Javascript/201311/25510