<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>学生表</title>
<!-- 1jQuery的js包 -->
<script type="text/javascript" src="jquery-easyui-1.4.4/jquery.min.js"></script>
<!-- 2css资源 -->
<link rel="stylesheet" type="text/css" href="jquery-easyui-1.4.4/themes/default/easyui.css">
<!-- 3图标资源 -->
<link rel="stylesheet" type="text/css" href="jquery-easyui-1.4.4/themes/icon.css">
<!-- 4easyui的js包 -->
<script type="text/javascript" src="jquery-easyui-1.4.4/jquery.easyui.min.js"></script> <!-- 5本地语言包 -->
<script type="text/javascript" src="jquery-easyui-1.4.4/locale/easyui-lang-zh_CN.js"></script></head>
<body><script type="text/javascript">
//把long型的日期改成yyyy-MM-dd
function getDate(date){//得到日期对象var d=new Date(date)//得到年月日var year=d.getFullYear();var month=(d.getMonth()+1);var day=d.getDate();var rtn=year +"-"+(month<10 ? "0"+month:month)+"-"+(day<10 ? "0"+day:day)return rtn;
}var type="add";$(function(){//创建DataGrid$("#dg").datagrid({ url:'getStudentlist.action', //数据来源//冻结列frozenColumns:[[{field:'id',checkbox:true},{field:'sno',title:'学生编号',width:100}]],//列的定义columns:[[ {field:'sname',title:'学生名',width:100}, {field:'ssex',title:'性别',width:100}, {field:'sclass',title:'班级',width:100,align:'right'},{field:'sbirthday',title:'生日',width:200,align:'center',formatter: function(value,row,index){var valuee = new Date(value).toLocaleDateString();if(valuee == 'Invalid Date'){return '无' ;}else{//return valuee;return getDate(valuee);}}}]],remoteSort:true,//是否服务器端排序 sortOrder:'desc',//排序方式sortName:'sno',//排序字段fitColumns:false,//列自适应宽度 ，不能和冻结列同时设置为truestriped:true,//斑马线效果idField:'sno',//主键列rownumbers:true,//显示行号singleSelect:false,//是否单选pagination:true,//显示分页栏pageList:[10,20,30,40],//每页行数选择列表pageSize:10,//初始每页行数multiSort:true,//是否允许多列排序toolbar:[{iconCls:'icon-search',text:'查询',handler:function(){//序列化表单查询var f=$("#form2").serialize();$("#dg").datagrid({url:"getStudentlist.action?"+f});}},{iconCls:'icon-add',text:'添加',handler:function(){$("#sno").textbox({readonly:false});type="add";//清除表单旧数据$("#form1").form("reset");$("#saveStu").dialog({title:'添加学生'}).dialog('open');}},{iconCls:'icon-edit',text:'修改',handler:function(){type="edit";//判断是否选中一条数据var data =$('#dg').datagrid('getSelected');if(data){//alert(data);//设置字段只读$("#sno").textbox({readonly:true});$("#form1").form('reset');$("#form1").form("load",{sno:data.sno,ssex:data.ssex,sclass:data.sclass, sname:data.sname,sbirthday:getDate(data.sbirthday)});//$('form').('load',data);$("#saveStu").dialog({title:'修改学生'}).dialog('open');}else{$.messager.show({title:'提示',msg:'请选中一条记录' });}}},{iconCls:'icon-remove',text:'删除',handler:function(){//判断是否选中一条数据var data =$('#dg').datagrid('getSelections');if(data.length>0){$.messager.confirm("确认","确实删除吗？",function(r){if(r){//alert("执行删除");//用数组保存选中记录的主键var snos=[];for(var i=0;i<data.length;i++){snos[i]=data[i].sno;}$.get("deleteStudentServlet?sno="+snos,function(rtn){//alert(rtn);var msg= eval("("+rtn+")");if(msg.success){$("#dg").datagrid('reload');}$.messager.show({title:"提示",msg:msg.message});});}else{}})}else{$.messager.show({title:'提示',msg:'请选中一条记录' });}}}]}); })</script>
<div id="search" class="easyui-panel" title="查询条件" style="heiget:100px"
data-options="{iconCls:'icon-search',collapsible:true}">
<form id="form2">名称：<input class="easyui-textbox" id="sname_s" name="sname_s">
班级：<input class="easyui-textbox" id="sclass_s" name="sclass_s"></form></div><table id="dg" >
</table><div class="easyui-dialog" id="saveStu" style="width:400px;height:300px;top:50px;"
title="添加学生" data-options="{closed:true,modal:true,
buttons:[{text:'保存',iconCls:'icon-save',handler:function(){$('#form1').form('submit',{
url:'SaveStudentServlet?type='+type,
onSubmit:function(){var isValid =$(this).form('validate'); if(!isValid){$.messager.show({title:'消息',msg:'数据验证未通过'});}return isValid;
},
success:function(data){var msg=eval('('+data+')');if(!msg.success){alert(msg.message);}else{ //$('#dg').datagrid('reload');$.messager.show({title:'提示',msg:msg.message});$('#saveStu').dialog('close');}
}
});}},
{text:'取消',iconCls:'icon-cancel',handler:function(){
$('#saveStu').dialog('close');
}}]}"><form action="" id="form1" method="post">
<br><br>
<table>
<tr>
<td align="right" width=30%>学号：</td>
<td><input class="easyui-textbox" id="sno" name="sno" data-options=
"{required:true,validType:'length[3,5]'}"></td>
</tr>
<tr>
<td align="right" width=30%>名称：</td>
<td><input class="easyui-textbox" name="sname" data-options=
"{required:true,validType:'length[2,4]'}"></td>
</tr>
<tr>
<td align="right" width=30%>性别：</td>
<td><input type="radio" name="ssex" checked
value="男">男
<input type="radio" name="ssex"
value="女">女</td>
</tr>
<tr>
<td align="right" width=30%>班级：</td>
<td><input class="easyui-textbox" name="sclass" data-options=
"{required:true,validType:'length[2,4]'}"></td>
</tr>
<tr>
<td align="right" width=30%>生日：</td>
<td><input class="easyui-datebox" name="sbirthday" ></td>
</tr></table></form>
</div></body>
</html>
package com.hanqi.dao;import java.util.ArrayList;
import java.util.List;
import java.util.Map;import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
import org.hibernate.cfg.Configuration;
import org.hibernate.service.ServiceRegistry;import com.hanqi.entity.Student;public class StudentDAO {Configuration cfg=null;ServiceRegistry sr=null;SessionFactory sf=null;Session se=null;Transaction tr=null;public StudentDAO(){//加载配置文件cfg=new Configuration().configure();//注册服务sr=new StandardServiceRegistryBuilder().applySettings(cfg.getProperties()).build();}//初始化private void init(){sf=cfg.buildSessionFactory(sr);se=sf.openSession();tr=se.beginTransaction();}//提交和释放资源private void destory(){tr.commit();se.close();sf.close(); }//添加数据public void insert(Student stu){init();se.save(stu);destory();}//修改 数据public void update(Student stu){init();se.update(stu);destory();}//删除public void delete(String sno){init();//Student st=(Student)se.get(Student.class, sno);//se.delete(st);//SQL方式执行删除se.createQuery("delete from Student where sno=?").setString(0, sno).executeUpdate(); destory();}//获取分页的数据集合public List<Student> getPageList(int page,int rows,Map<String, String> where,String sort){System.out.println(sort+ "dao");List<Student> rtn=new ArrayList<Student>();init();//创建基础HQL语句String sql="from Student where 1=1";//判断传递的参数String sname= where.get("sname_s");if(sname!=null&&!sname.equals("")){sql+="and sname=:sname";}String sclass= where.get("sclass_s");if(sclass!=null&&!sclass.equals("")){sql+="and sclass=:sclass";}if(sort!=null&&!sort.equals("")){sql+=" order by "+ sort;}//得到HQLQuery q=se.createQuery(sql);if(sname!=null&&!sname.equals("")){q.setString("sname", sname);}if(sclass!=null&&!sclass.equals("")){q.setString("sclass",sclass);}rtn=q.setFirstResult((page-1)*rows).setMaxResults(rows).list();destory();return rtn;}//获取数据条数public int getTotal(Map<String, String> where){int rtn=0;init();String sql="select count(1)from Student where 1=1";//判断传递的参数String sname= where.get("sname_s");if(sname!=null&&!sname.equals("")){sql+="and sname=:sname";}String sclass= where.get("sclass_s");if(sclass!=null&&!sclass.equals("")){sql+="and sclass=:sclass";}//得到HQLQuery q=se.createQuery(sql);if(sname!=null&&!sname.equals("")){q.setString("sname", sname);}if(sclass!=null&&!sclass.equals("")){q.setString("sclass",sclass);}//List<Object> lo=se.createQuery("select count(1)from Student").list();List<Object> lo=q.list();if(lo!=null&&lo.size()>0){rtn=Integer.parseInt(lo.get(0).toString());}destory();return rtn;}}
package com.hanqi.entity;import java.util.Date;public class Student {private String sno,sname,ssex,sclass;private Date sbirthday;public String getSno() {return sno;}public void setSno(String sno) {this.sno = sno;}public String getSname() {return sname;}public void setSname(String sname) {this.sname = sname;}public String getSsex() {return ssex;}public void setSsex(String ssex) {this.ssex = ssex;}public String getSclass() {return sclass;}public void setSclass(String sclass) {this.sclass = sclass;}public Date getSbirthday() {return sbirthday;}public void setSbirthday(Date sbirthday) {this.sbirthday = sbirthday;}}
package com.hanqi.Service;import java.util.HashMap;
import java.util.List;
import java.util.Map;import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.hanqi.dao.StudentDAO;
import com.hanqi.entity.Student;public class StudentService {public void addStudeng(Student stu){new StudentDAO().insert(stu);}//查询分页数据//返回JSONpublic String getPageJSON(int page,int rows,Map<String, String> where,String sort){ PageJson<Student>pj=new PageJson<>();String rtn="{'total':0,'rows':[]}";int total=new StudentDAO().getTotal(where);if(total>0){System.out.println(sort+ "service");List<Student> ls=new StudentDAO().getPageList(page, rows,where,sort);//String ls_json=JSONArray.toJSONString(ls);//rtn="{\"total\":"+total+",\"rows\":"+ls_json+"}";pj.setTotal(total);pj.setRows(ls);rtn=JSONObject.toJSONString(pj);}return rtn;}public void editStu(Student stu){new StudentDAO().update(stu);}public void delete(String sno){new StudentDAO().delete(sno);}}
package com.hanqi.action;public class TestAction {private String msg;private String name;public String testGet(){System.out.println("处理get请求");msg="{\"success\":true,\"message\":\"666\"}";name="tom";return "success";}public String getMsg() {return msg;}public void setMsg(String msg) {this.msg = msg;}public String getName() {return name;}public void setName(String name) {this.name = name;}}
struts2
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC"-//Apache Software Foundation//DTD Struts Configuration 2.3//EN""http://struts.apache.org/dtds/struts-2.3.dtd"><struts><!-- 设置过滤的扩展名 -->
<constant name="struts.action.extension" value="do,action,,"></constant><package name="test" extends="json-default"><action name="TestGet"
class="com.hanqi.action.TestAction"
method="testGet"><!-- 返回了JSON格式的Action对象 -->
<result type="json"><param name="root">msg</param></result></action></package><package name="stu" extends="json-default"><action name="getStudentlist"class="com.hanqi.action.StudentAction"method="getStudentlis-t"></action></package>
</struts>
![[BZOJ3173][Tjoi2013]最长上升子序列](http://pic.xiahunao.cn/[BZOJ3173][Tjoi2013]最长上升子序列)
原理)
