JSP页面中所需要的JavaScript事件及Ajax
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后台Action所需的代码: public clasee empAction extends ActionSupport{public String checkEmpNoAndEmpName() throws Exception { HttpServletRequest request = ServletActionContext.getRequest(); HttpServletResponse respons = ServletActionContext.getResponse(); String empNo = request.getParameter("empNo");//获取页面提交给后台的Action的empNo respons.setContentType("text/html;charset=utf-8");//对响应的字符集进行设置 String sendStr = ""; ListemployeeInfoList = this.empService.checkEmpNo(empNo);//调用业务根据empNo层查询此用户 try { PrintWriter out=respons.getWriter();//多去打印对象 if (employeeInfoList.size()>0) { sendStr = employeeInfoList.get(0).getEmpName(); } else { sendString = "该用户名不存在!"; } out.print(sendStr);//将后台动态sendStr输出到JSP页面 out.flush(); out.close(); } catch (Exception e) { e.printStackTrace(); } return null; }}