Springmvc+Myabtis+Ajax实现异步分页emp+dept（全部查询及模糊查询）

1.在项目中创建如下目录

2.创建实体类Dept

package com.entity;

import java.io.Serializable;

/**
 * 部门表
 * @author Administrator
 *
 */
public class Dept implements Serializable{
    /**
     * 
     */
    private static final long serialVersionUID = 1L;
    private Integer deptno;
    private String dname;
    private String loc;
    public Integer getDeptno() {
        return deptno;
    }
    public void setDeptno(Integer deptno) {
        this.deptno = deptno;
    }
    public String getDname() {
        return dname;
    }
    public void setDname(String dname) {
        this.dname = dname;
    }
    public String getLoc() {
        return loc;
    }
    public void setLoc(String loc) {
        this.loc = loc;
    }
    public Dept() {
        super();
    }
    public Dept(Integer deptno, String dname, String loc) {
        super();
        this.deptno = deptno;
        this.dname = dname;
        this.loc = loc;
    }
    
}

3。创建实体类Emp

package com.entity;

import java.io.Serializable;

/**
 *    员工表 
 * @author Administrator
 *
 */
public class Emp implements Serializable{
    /**
     * 
     */
    private static final long serialVersionUID = 1L;
    private Integer empno;
    private String ename;
    private Double sal;
    
    /*多对一*/
    private Dept dept;

    public Integer getEmpno() {
        return empno;
    }

    public void setEmpno(Integer empno) {
        this.empno = empno;
    }

    public String getEname() {
        return ename;
    }

    public void setEname(String ename) {
        this.ename = ename;
    }

    public Double getSal() {
        return sal;
    }

    public void setSal(Double sal) {
        this.sal = sal;
    }

    public Dept getDept() {
        return dept;
    }

    public void setDept(Dept dept) {
        this.dept = dept;
    }

    public Emp(Integer empno, String ename, Double sal, Dept dept) {
        super();
        this.empno = empno;
        this.ename = ename;
        this.sal = sal;
        this.dept = dept;
    }

    public Emp() {
        super();
    }
    
    
}

4.封装page类用于放置分页查询的参数

package com.page;

public class Page {
    private Integer pageno;//当前页
    private Integer pagesize;//页面大小
    private Integer totalcount;//总条数
    private Integer totalpage;//总页数
    private Integer startrownum;//起始页
    private Integer endrownum;//结束页
    private Integer deptno;//部门编号
    
    public Integer getDeptno() {
        return deptno;
    }
    public void setDeptno(Integer deptno) {
        this.deptno = deptno;
    }
    public Integer getPageno() {
        return pageno;
    }
    public void setPageno(Integer pageno) {
        this.pageno = pageno;
    }
    public Integer getPagesize() {
        return pagesize;
    }
    public void setPagesize(Integer pagesize) {
        this.pagesize = pagesize;
    }
    public Integer getTotalcount() {
        return totalcount;
    }
    public void setTotalcount(Integer totalcount) {
        this.totalcount = totalcount;
    }
    public Integer getTotalpage() {
        return totalpage;
    }
    public void setTotalpage(Integer totalcount) {
        this.totalpage = totalcount%pagesize==0?totalcount/pagesize:totalcount/pagesize+1;;
    }
    public Integer getStartrownum() {
        return startrownum;
    }
    public void setStartrownum(Integer startrownum) {
        this.startrownum = startrownum;
    }
    public Integer getEndrownum() {
        return endrownum;
    }
    public void setEndrownum(Integer endrownum) {
        this.endrownum = endrownum;
    }
    public Page() {
    }
    /**
     * 传入分页的条件页
     * @param pageno
     * @param pagesize
     */
    
    public Page(Integer pageno, Integer pagesize,Integer totalcount) {
        this.pageno = pageno;
        this.pagesize = pagesize;
        this.totalcount = totalcount;
        setTotalpage(totalcount);
        this.startrownum = (pageno-1)*pagesize;
        this.endrownum = pageno*pagesize;
    }
    
    /**
     * 模糊查询分页
     * @param pageno
     * @param pagesize
     * @param totalcount
     * @param deptno
     */
    public Page(Integer pageno, Integer pagesize, Integer totalcount,
            Integer deptno) {
        this(pageno, pagesize, totalcount);
        this.deptno = deptno;
    }
    
    
    @Override
    public String toString() {
        return "Page [pageno=" + pageno + ", pagesize=" + pagesize
                + ", totalcount=" + totalcount + ", totalpage=" + totalpage
                + ", startrownum=" + startrownum + ", endrownum=" + endrownum
                + "]";
    }
    
    
    
    

}

5.创建emp表的mapper接口

package com.mapper;

import java.util.List;

import com.entity.Emp;
import com.page.Page;
/**
 * 员工映射接口
 * @author sam
 *
 */
public interface EmpMapper {
    /**
     * 查询所有员工信息
     * @return
     */
    List<Emp> findEmp();
    /**
     * 根据部门编号查询某个部门下的所有员工
     * @return
     */
    List<Emp> findByDeptAndEmp(Integer deptno);
    /**
     * 分页查询
     * @param page
     * @return
     */
    List<Emp> findpage(Page page);
    /**
     * 模糊分页
     * @param page
     * @return
     */
    List<Emp> findpagelike(Page page);
    
    
}

6.创建dept表的mapper接口

package com.mapper;

import java.util.List;

import com.entity.Dept;
/**
 * 部门映射接口
 * @author sam
 *
 */
public interface DeptMapper {
    /**
     * 查询所有部门信息
     * @return
     */
    List<Dept> findDept();
}

7.编写emp的映射文件

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
<mapper namespace="com.mapper.EmpMapper">

    <!-- 查询所有员工信息 -->
    <select id="findEmp" resultMap="findEmpAndDept">
        select * from emp e inner join
        dept d on e.deptno=d.deptno
    </select>

    <!-- 根据部门编号查询某个部门下的所有员工 -->
    <select id="findByDeptAndEmp" resultMap="findEmpAndDept"
        parameterType="Integer">
        select * from emp e inner join dept d on
        e.deptno=d.deptno where
        e.deptno=#{deptno}
    </select>

    <!-- 分页 -->
    <select id="findpage" parameterType="com.page.Page" resultMap="findEmpAndDept">
    <![CDATA[
    select * from 
    (select rownum r,e.empno,e.ename,e.sal,e.deptno,d.dname,d.loc
     from emp e inner join dept d on e.deptno=d.deptno 
     and rownum<=#{endrownum}) 
     where r>#{startrownum}    
    ]]>
    </select>
    
    <select id="findpagelike" parameterType="com.page.Page" resultMap="findEmpAndDept">
    <![CDATA[
    select * from 
    (select rownum r,e.empno,e.ename,e.sal,e.deptno,d.dname,d.loc
     from emp e inner join dept d on e.deptno=d.deptno 
     and rownum<=#{endrownum} and d.deptno=#{deptno}) 
     where r>#{startrownum}    
    ]]>
    </select>
    
    <!-- 配置查询的结果集 -->
    <resultMap type="com.entity.Emp" id="findEmpAndDept">
        <id property="empno" column="EMPNO" javaType="java.lang.Integer" />
        <result property="ename" column="ENAME" javaType="java.lang.String" />
        <result property="sal" column="SAL" javaType="java.lang.Double" />
        <!-- 配置外键的结果集 -->
        <association property="dept" javaType="com.entity.Dept"
            column="DEPTNO">
            <id property="deptno" column="DEPTNO" javaType="java.lang.Integer" />
            <result property="dname" column="DNAME" javaType="java.lang.String" />
            <result property="loc" column="LOC" javaType="java.lang.String" />
        </association>
    </resultMap>
</mapper>

8.创建dept的映射文件

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
<mapper namespace="com.mapper.DeptMapper">

<!-- 查询所有部门信息 -->
<select id="findDept" resultType="com.entity.Dept">
    select deptno,dname,loc from dept
</select>

</mapper>

9.创建emp的service接口

package com.service;

import java.util.List;

import com.entity.Emp;
import com.page.Page;

public interface EmpService {
    /**
     * 查询所有员工信息
     * @return
     */
    List<Emp> findEmp();
    /**
     * 根据部门编号查询某个部门下的所有员工
     * @return
     */
    List<Emp> findByDeptnoEmp(Integer deptno);
    /**
     * 分页查询
     * @param page
     * @return
     */
    List<Emp> findpage(Integer pageno,Integer pagesize);
    /**
     * 模糊分页
     * @param page
     * @return
     */
    List<Emp> findpagelike(Page page);
}

10.创建dept的service接口

package com.service;

import java.util.List;

import org.springframework.web.filter.CharacterEncodingFilter;


import com.entity.Dept;

public interface DeptService {
    /**
     * 查询所有部门信息
     * @return
     */
    List<Dept> findDept();
}

11.创建emp的service的实现类

package com.service.impl;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import com.entity.Emp;
import com.mapper.EmpMapper;
import com.page.Page;
import com.service.EmpService;

@Service
@Transactional
public class EmpServiceImpl implements EmpService {

    @Autowired
    private EmpMapper empMapper;
    
    /**
     * 查询员工信息
     */
    public List<Emp> findEmp() {
        // TODO Auto-generated method stub
        return empMapper.findEmp();
    }

    /**
     * 模糊查询查询
     */
    public List<Emp> findByDeptnoEmp(Integer deptno) {
        // TODO Auto-generated method stub
        return empMapper.findByDeptAndEmp(deptno);
    }

    //普通查询分页
    public List<Emp> findpage(Integer pageno, Integer pagesize) {
        // TODO Auto-generated method stub
        int totalcount=empMapper.findEmp().size();//通过查询所有结果集(list集合)的size方法获取总条数
        Page page=new Page(pageno, pagesize, totalcount);
        return empMapper.findpage(page);
    }

    //模糊查询分页
    public List<Emp> findpagelike(Page page) {
        // TODO Auto-generated method stub
        return empMapper.findpagelike(page);
    }

}

12.创建dept的service的实现类

package com.service.impl;

import java.util.List;

import javax.annotation.Resource;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import com.entity.Dept;
import com.mapper.DeptMapper;
import com.service.DeptService;

@Service
@Transactional
public class DeptServiceImpl implements DeptService {
    
    @Autowired
    private DeptMapper deptMapper;

    /**
     * 查询部门信息
     */
    public List<Dept> findDept() {
        // TODO Auto-generated method stub
        return deptMapper.findDept();
    }

}

13.在WEB—INF下编写Springmvc的xml文件

<?xml version="1.0" encoding="UTF-8"?>
<beans 
xmlns="http://www.springframework.org/schema/beans" 
xmlns:aop="http://www.springframework.org/schema/aop" 
xmlns:context="http://www.springframework.org/schema/context" 
xmlns:mvc="http://www.springframework.org/schema/mvc" 
xmlns:tx="http://www.springframework.org/schema/tx" 
xmlns:xsd="http://www.w3.org/2001/XMLSchema" 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xsi:schemaLocation="
http://www.springframework.org/schema/beans 
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/aop 
http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/context 
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd
http://www.springframework.org/schema/tx 
http://www.springframework.org/schema/tx/spring-tx.xsd
">

<!-- 1.支持注解 -->
<mvc:annotation-driven/>


<!-- 2.全局扫描包注解 -->
<context:component-scan base-package="com"></context:component-scan>

<!-- 3.驱动管理配置数据源 -->
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
    <property name="driverClassName" value="oracle.jdbc.driver.OracleDriver"/>
    <property name="url" value="jdbc:oracle:thin:@127.0.0.1:1521:orcl"/>
    <property name="username" value="scott"/>
    <property name="password" value="tiger"/>
</bean>

<!-- 4.数据源管理事务-->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
    <!-- 引入数据源 -->
    <property name="dataSource" ref="dataSource"/>
</bean>

<!-- 5.sqlsessionfactorybean -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
    <!-- 引入数据源 -->
    <property name="dataSource" ref="dataSource"/>
    
        <!-- 引入myBatis映射文件 -->
    <property name="mapperLocations">
        <value>classpath:com/mapper/*.xml</value>
        <!-- <list>
            <value>classpath:com/mapper/DeptMapper.xml</value>
            <value>classpath:com/mapper/EmpMapper.xml</value>
        </list> -->
    </property>
</bean>

<!-- 6.输入的映射的类 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
    <!-- 映射接口的路径 -->
    <property name="basePackage" value="com.mapper"></property>
</bean>
</beans >

14.创建控制类

package com.controller;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.List;

import javax.servlet.ServletRequest;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.codehaus.jackson.JsonGenerationException;
import org.codehaus.jackson.map.JsonMappingException;
import org.codehaus.jackson.map.ObjectMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.server.ServletServerHttpRequest;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

import com.entity.Dept;
import com.entity.Emp;
import com.page.Page;
import com.service.DeptService;
import com.service.EmpService;
import com.sun.faces.config.ConfigureListener.ServletContextAdapter;

/**
 * 控制层
 * @author Administrator
 *
 */
@Controller
public class EmpAndDeptController {
    
    @Autowired
    private EmpService empService;

    @Autowired
    private DeptService deptService;
    
/*    @RequestMapping("/findEmpAndDept.do")
    public String findEmpAndDept(HttpServletRequest request,String pageNo){
        int pageno=1;
        if (pageNo!=null) {
            pageno=Integer.parseInt(pageNo);
        }
        
        int pagesize=3;
        
        int  totalcount=empService.findEmp().size();
        
        Page page=new Page(pageno, pagesize, totalcount);
        
        List<Emp> emplList=empService.findpage(pageno, pagesize);
        List<Dept> deptlist=deptService.findDept();
        if (emplList!=null && deptlist!=null) {
            for (Emp emp : emplList) {
                System.out.println(emp);
            }
            for (Dept dept : deptlist) {
                System.out.println(dept);
            }
            request.setAttribute("emplList", emplList); 
            request.setAttribute("page", page);
            request.getSession().setAttribute("deptlist", deptlist);             
        }else{
            System.out.println("没查到!");
        }
        return "/index.jsp";
    }
    
    *//**
     * 根据部门编号查询员工信息
     * @param deptno
     * @param request
     * @return
     *//*
    @RequestMapping("findEmpByDeptno.do")
    public String findEmpByDeptno(String id,HttpServletRequest request){
        System.out.println("前台获取的deptno是"+id);
        Integer deptno=null;
        
        if (id!=null) {
            deptno=Integer.parseInt(id);
        }
        List<Emp> emplist=new ArrayList<Emp>();
        if (deptno!=null) {
            emplist=empService.findByDeptnoEmp(deptno);
            request.setAttribute("emplList", emplist);
            request.setAttribute("dno", deptno);
        }
        
        return "/index.jsp";
    }
    */
    /**
     * 分页查询的方法，根据前台的页面请求Ajax回调执行并返回结果
     * @param request 请求
     * @param response 响应
     * @param pageNo 请求页面数
     * @param id 请求的模糊查询条件
     */
    @RequestMapping("/fenyepage.do")
    public void fenyepage(HttpServletRequest request,HttpServletResponse response,String pageNo,String id){
        /**
         * 得到传入查询方法的page的当前页数
         */
        int pageno=1;
        if (pageNo!=null) {
            pageno=Integer.parseInt(pageNo);
        }
        
        //页面大小
        int pagesize=3;
        //总条数，根据请求不同查询不同
        int  totalcount=0;
        //传入查询方法的page对象
        Page page=null;
        //返回结果集，但是由于查询条件分模糊还是所有，所以先创建对象
        List<Emp> emplList=new ArrayList<Emp>();
        
        
        System.out.println("从页面传过来的deptno值是：'"+id);
        int deptno=0;
        //判断页面是否有模糊查询条件传过来
        if (id==null || id.equals("")) {
            System.out.println("进入普通分页");
            //获取普通查询总条数
            totalcount=empService.findEmp().size();
            //得到查询的page对象
            page=new Page(pageno, pagesize, totalcount);
            //得到查询结果
            emplList=empService.findpage(pageno, pagesize);
        } else {
            System.out.println("进入条件分页");
            //得到模糊查询的具体条件
            deptno=Integer.parseInt(id);
            //获取模糊查询的总条数
            totalcount=empService.findByDeptnoEmp(deptno).size();
            //得到查询的page对象
            page=new Page(pageno, pagesize, totalcount, deptno);
            //得到模糊查询结果
            emplList=empService.findpagelike(page);
            
        }
        
        
        System.out.println("获取的page是"+page);
        //获取下拉列表的结果集
        List<Dept> dlist=deptService.findDept();
        if (emplList!=null && dlist!=null) {
            for (Emp emp : emplList) {
                System.out.println(emp);
            }
            for (Dept dept : dlist) {
                System.out.println(dept);
            }
            
            
            
            
            
            try {
                //获取json文件的包装对象om，并将所有前台需要结果转换为json格式
                ObjectMapper om=new ObjectMapper();
                String emplist=om.writeValueAsString(emplList);
                String pageinfo=om.writeValueAsString(page);
                String deptlist=om.writeValueAsString(dlist);
                //获取总的json文件
                emplist="{"emplist":"+emplist+","pageinfo":"+pageinfo+","deptlist":"+deptlist+","ddno":"+deptno+"}";
                
                System.out.println("list集合为"+emplist);
                PrintWriter out=response.getWriter();
                //给请求的Ajax返回值
                out.print(emplist);
            } catch (JsonGenerationException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (JsonMappingException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
                        
        }else{
            System.out.println("没查到!");
        }
    }
    
    
    
/*    @RequestMapping("/fenyepage.do")
    public String fenyepage(HttpServletRequest request,String pageNo){
        int pageno=1;
        if (pageNo!=null) {
            pageno=Integer.parseInt(pageNo);
        }
        
        int pagesize=3;
        
        int  totalcount=empService.findEmp().size();
        
        Page page=new Page(pageno, pagesize, totalcount);
        System.out.println("获取的page是"+page);
        List<Emp> emplList=empService.findpage(pageno, pagesize);
        List<Dept> deptlist=deptService.findDept();
        if (emplList!=null && deptlist!=null) {
            for (Emp emp : emplList) {
                System.out.println(emp);
            }
            for (Dept dept : deptlist) {
                System.out.println(dept);
            }
            request.setAttribute("emplList", emplList); 
            request.setAttribute("page", page);
            request.getSession().setAttribute("deptlist", deptlist);             
        }else{
            System.out.println("没查到!");
        }
        return "/index.jsp";
    }
*/
    

}

15.编写web.xml文件

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
    http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
    <display-name></display-name>

    <servlet>
        <servlet-name>springmvc</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    </servlet>
    <servlet-mapping>
        <servlet-name>springmvc</servlet-name>
        <url-pattern>*.do</url-pattern>
    </servlet-mapping>
    
    <filter>
        <filter-name>characterEncodingFilter</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
        <init-param>
            <param-name>encoding</param-name>
            <param-value>UTF-8</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>characterEncodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
    <welcome-file-list>
        <welcome-file>index.jsp</welcome-file>
    </welcome-file-list>
</web-app>

16.，在WEB-INF下创建js文件夹，引入jQuery的库文件并编写自己的js文件

$(function(){
    alert("进入ajax方法");
    yibushuaxin();
    test1();
    mohu();
});


function yibushuaxin(pageNo,deptno){
    
    $.ajax({
        url:'fenyepage.do',
        type:'post',
        data:{'pageNo':pageNo,"id":deptno},
        dataType:'json',
        success:function(obj){
            alert("success");
            $("table").html("");
            $("form").html("");
            
            var str="<tr><td>员工编号</td><td>员工姓名</td><td>" +
                    "员工工资</td><td>部门编号</td><td>部门名称</td>" +
                    "<td>部门地址</td><td>操作</td></tr>";
        
            $.each(obj.emplist,function(i){
                str+="<tr><td>"+obj.emplist[i].empno+"</td>"+
                "<td>"+obj.emplist[i].ename+"</td>"+
                "<td>"+obj.emplist[i].sal+"</td>"+
                "<td>"+obj.emplist[i].dept.deptno+"</td>"+
                "<td>"+obj.emplist[i].dept.dname+"</td>"+
                "<td>"+obj.emplist[i].dept.loc+"</td>"+
                "<td><a href="javaScript:void(0)">修改</a><a href="javaScript:void(0)">删除</a></td></tr>";            
                
            });
            
            str+="<tr><td><input type="hidden" id='pno' value=""+obj.pageinfo.pageno+""></td>"+
                "<td><input type="hidden" id='topg' value=""+obj.pageinfo.totalpage+""></td>"+
                "<td><input type="hidden" id='dno' value=""+obj.pageinfo.deptno+""></td></tr>";
            
            str+="<tr><td colspan="7">" +    
            "<a href="javaScript:void(0)" class='page'>首页</a>&nbsp;&nbsp;&nbsp;"+
            "<a href="javaScript:void(0)" class='page'>上一页</a>&nbsp;&nbsp;&nbsp;"+
            "<a href="javaScript:void(0)" class='page'>下一页</a>&nbsp;&nbsp;&nbsp;"+
            "<a href="javaScript:void(0)" class='page'>末页</a>"+
            "</td></tr>";
            $("table").append(str);
            
            
            
            var dtr="<select name='id' id='did'><option class='ppp'  selected='selected' value='0'>请选择</option>";
            $.each(obj.deptlist,function(i){
                if (obj.deptlist[i].deptno!=obj.ddno) {
                    dtr+="<option value='"+obj.deptlist[i].deptno+"'  class='ppp'>"+obj.deptlist[i].dname+"</option>";                    
                }else{
                    dtr+="<option value='"+obj.deptlist[i].deptno+"' selected='selected' class='ppp'>"+obj.deptlist[i].dname+"</option>";                                        
                }
            });
            dtr+="</select> <input type='button' value='提交查询' id='mohu'>";
            $("form").append(dtr);
            
        },
        error:function(obj){
            alert("error");
        },
    });
    
}


function test1(){
    $(".page").live("click",function(){
        var page=$(this).text();

        var pageNo=parseInt($("#pno").val());
        var totalPage=parseInt($("#topg").val());
        var deptno=null;
        $(".ppp").each(function(){
            var xx=$(":selected").val();
            if (xx!=0) {
                deptno=parseInt(xx);
            }else{
                deptno=null;
            }
        });
        alert("模糊查询获取的deptno是"+deptno);
        if (page=="首页") {
            pageNo=1;
        }else if (page=="上一页") {
            if (pageNo>1) {
                pageNo=pageNo-1;
            } else {
                alert("已经是首页了");
            }
        }else if (page=="下一页") {
            if (pageNo<totalPage) {
                pageNo=pageNo+1;
            } else {
                alert("已经是末页了");
            }
        }else if (page=="末页") {
            pageNo=totalPage;
        }
        yibushuaxin(pageNo,deptno);
    });    
}

function mohu(){
    $("#mohu").live("click",function(){
                
        var deptno=parseInt($("#did").val());
        alert("传后台的deptno是"+deptno);
        if (deptno==0) {
            deptno=null;
        }
        yibushuaxin(1,deptno);
            }
        
    );
    
}

17.创建前台页面index.jsp文件

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<%
    String path = request.getContextPath();
    String basePath = request.getScheme() + "://"
            + request.getServerName() + ":" + request.getServerPort()
            + path + "/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">

<title>My JSP 'index.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
    <link rel="stylesheet" type="text/css" href="styles.css">
    -->
<script type="text/javascript" src="js/jquery-1.8.3.js"></script>
<script type="text/javascript" src="js/index.js"></script>
</head>

<body>
    <center>
        <fieldset style=" 500px">
            <legend>showpage</legend>

            <form>
            
            </form>

            <table border="1px">
            
            
            
            </table>
        </fieldset>
    </center>
</body>
</html>

下面就可以直接玩了，springmvc部分替代了struts的拦截功能，保留了Spring中的最核心的部分IoC，利用注解的方式给对象赋值，使用Ajax时除了基本的框架jar文件外，还需要引入jackson的jar 文件。