Java删除表

这里页面我用了layui 框架做删除的，这里需要引入layui 的css 与js 插件，这里写出主要的代码。
Jsp ：

//监听行工具事件table.on('tool(test)', function(obj){var data = obj.data; //获得当前行数据var date1 = data.classifyColumnID;if(obj.event === 'del'){//删除layer.confirm("确认删除吗?", {icon: 3,btn: ['确定', '取消']}, function (index) {layer.close(index);        $.post("servlet/SiteServletfun=deleteclassification&ClassifyColumnID="+date1, function(jsonObject) {data = JSON.parse(jsonObject);if (data.state == true) {layer.alert(data.msg,{icon:1,title:'提示',offset:'100px',btn: ['确定','取消']},function(index){layer.close(index);	location.reload();//页面刷新});							 }else{layer.alert(data.msg,{icon:2,title:'提示',offset:'100px',btn: ['确定','取消']},function(index){layer.close(index);	location.reload();//页面刷新});};}); });   
}

Servlet ：

	public void deleteclassification(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {JsonReturn jsonReturn = new JsonReturn();int ClassifyColumnID = Integer.parseInt(request.getParameter("ClassifyColumnID"));String str = iSite.deleteclassification(ClassifyColumnID);if ("删除成功".equals(str)) {jsonReturn.setState(true);jsonReturn.setMsg(str);} else {jsonReturn.setState(false);jsonReturn.setMsg(str);}JSONObject jsonObject = JSONObject.fromObject(jsonReturn);PrintWriter out = response.getWriter();out.write(jsonObject.toString());out.flush();out.close();  }

Dao 实现类：

@Overridepublic int deleteclassification(int ClassifyColumnID) {int flog=0;try {con = DbUtil.getConnection();ps = con.prepareStatement("DELETE FROM jc_bas_classifycolumn WHERE ClassifyColumnID = ?");ps.setInt(1, ClassifyColumnID);ff = ps.executeUpdate();} catch (SQLException e) {e.printStackTrace();}finally{DbUtil.close(con, ps, rs); }return flog;}

Service 实现类:

@Overridepublic String deleteclassification(int ClassifyColumnID) {String str = null;if (userSite.deleteclassification(ClassifyColumnID)>0) {str= "删除成功";} else {str= "删除失败";}return str;}