过滤器的实现

controller

@RequestMapping("/login.action")
    public ModelAndView login(
            @RequestParam(value="loginname",required=false)String loginname,
            @RequestParam(value="password",required=false)String password,
            HttpSession httpSession,
            ModelAndView mv){
        if(!(loginname==null||password==null)){
            System.out.println(loginname+"---");
            User user = userService.getByloginnameAndPassWord(loginname, password);
            if(user!=null){
                httpSession.setAttribute("user", user);
                mv.setViewName("userList");
            }else{
                return new ModelAndView("redirect:/login.jsp");
            }
        }else{
            return new ModelAndView("redirect:/login.jsp");
        }
        return mv;
    }

filter

@Override
    public void doFilter(ServletRequest req, ServletResponse resp, FilterChain chain)
            throws IOException, ServletException {
        // TODO Auto-generated method stub
        HttpServletRequest request = (HttpServletRequest)req;  
        HttpServletResponse response = (HttpServletResponse)resp;
        request.setCharacterEncoding("UTF-8");  
        response.setContentType("text/html;charset=UTF-8");  
        HttpSession session = request.getSession(); 
        PrintWriter writer = response.getWriter();
        Object user = session.getAttribute("user");
        String uri = request.getRequestURI();
        System.out.println(uri);
        System.out.println(user);
        if(!((uri.contains("login.jsp"))||(uri.contains("login.action")))){
            if(user!=null){
                chain.doFilter(request, response);
            }else{
                writer.write("<sapn color='red'>您还未登陆，三秒钟后跳转至登录页面</sapn>");
//          ((HttpServletResponse) response).sendRedirect(path+"/login.jsp");
                 response.setHeader("refresh","3;/hrm/login.jsp"); 
            }
        }else{
            chain.doFilter(request, response);
        }
    }

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xmlns="http://java.sun.com/xml/ns/javaee" 
 xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
    <!-- spring配置文件所在位置 -->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:spring/applicationContext.xml</param-value>
    </context-param>
    <!-- spring容器 -->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <!-- springmvc核心控制器 -->
    <servlet>
        <servlet-name>hrm</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:spring/spring-mvc.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>hrm</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
    <!-- 编码过滤器 -->
    <filter>
        <filter-name>characterEncoding</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>characterEncoding</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
    <filter>
        <filter-name>myfilter</filter-name>
        <filter-class>com.lzh.hrm.util.MyFilter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>myfilter</filter-name>
        <url-pattern>*.jsp</url-pattern>
        <url-pattern>*.action</url-pattern>
    </filter-mapping>

 </web-app>

乱码问题

<!-- 编码过滤器 -->
    <filter>
        <filter-name>characterEncoding</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>characterEncoding</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

mybatis增删改查七个功能

<?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.lzh.hrm.dao.UserDao">
    <sql id="key">
        <trim suffixOverrides=",">
            <if test="loginname!=null">
                loginname,
            </if>
            <if test="password!=null">
                password,
            </if>
            <if test="status!=null">
                status,
            </if>
            <if test="createdate!=null">
                createdate,
            </if>
            <if test="username!=null">
                username,
            </if>
        </trim>
    </sql>
    <sql id="value">
        <trim suffixOverrides=",">
            <if test="loginname!=null">
                #{loginname},
            </if>
            <if test="password!=null">
                #{password},
            </if>
            <if test="status!=null">
                #{status},
            </if>
            <if test="createdate!=null">
                #{createdate},
            </if>
            <if test="username!=null">
                #{username},
            </if>
        </trim>
    </sql>
    <select id="getById" resultType="user">
         select 
            id,
            loginname,
            password,
            status,
            createdate,
            username
        from 
            user_inf
        where
            id=#{id}
    </select>

    <select id="getByloginnameAndPassWord" resultType="user">
        select 
            id,
            loginname,
            password,
            status,
            createdate,
            username
        from 
            user_inf
        where
            loginname=#{loginname}
        and
            password=#{password}
    </select>
    <insert id="save" parameterType="user">

        insert into user_inf(<include refid="key"/>) values(<include refid="value"/>)
    </insert>

    <delete id="delete">
        delete from user_inf where id=#{id}
    </delete>

    <update id="update" parameterType="user">
        update user_inf
            <set>
                <if test="loginname!=null">
                    loginname=#{loginname},
                </if>
                <if test="password!=null">
                    password=#{password},
                </if>
                <if test="status!=null">
                    status=#{status},
                </if>
                <if test="createdate!=null">
                    createdate=#{createdate},
                </if>
                <if test="username!=null">
                    username=#{username},
                </if>
            </set>
            where
                id=#{id}
    </update>

    <select id="getAll" resultType="user">
        select 
            id,
            loginname,
            password,
            status,
            createdate,
            username
        from user_inf
    </select>

     <select id="count"  resultType="int">
        select
            count(id)
        from 
            user_inf
        <where>
            <if test="pname!=null">
                username like concat(concat("%",#{pname}),"%")
            </if>
        </where>
    </select>
    <select id="getByPage" resultType="user">
        select 
            id,
            loginname,
            password,
            status,
            createdate,
            username
        from 
            user_inf
        <if test="start!=null and pageSize!=null">
            limit #{start},#{pageSize}
        </if>
    </select>
</mapper>

applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:aop="http://www.springframework.org/schema/aop"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:p="http://www.springframework.org/schema/p"
    xmlns:tx="http://www.springframework.org/schema/tx"
    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-4.0.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd">
    <!-- 扫描service层 -->//实现接口
    <context:component-scan base-package="com.lzh.hrm.service"/>
    <!-- 加载数据库配置信息 -->
    <context:property-placeholder location="classpath:jdbc-mysql.properties"/>
    <!-- 配置数据库连接池dbcp -->
    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
        p:url="${jdbc.url}"
        p:driverClassName="${jdbc.driverClassName}"
        p:username="${jdbc.username}"
        p:password="${jdbc.password}"/>
    <!-- 配置sqlSessionFactory类 -->
    <bean id="sqlSessionFactoryBean" class="org.mybatis.spring.SqlSessionFactoryBean"
        p:dataSource-ref="dataSource"
        p:mapperLocations="classpath:mybatis/mapper/*.xml"
        p:typeAliasesPackage="com.lzh.hrm.entity"
        p:configLocation="classpath:mybatis/mybatis-config.xml"/>
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"
        p:basePackage="com.lzh.hrm.dao"/>

    <!-- 事务管理器 -->
    <bean id="transactionManager" 
        class="org.springframework.jdbc.datasource.DataSourceTransactionManager"
        p:dataSource-ref="dataSource"/>
    <!-- 把事务管理器包装成advice -->
    <tx:advice id="txAdvice"  transaction-manager="transactionManager">
        <tx:attributes>
            <tx:method name="get*" read-only="true"/>
            <tx:method name="save*" propagation="REQUIRED" rollback-for="Exception"/>
            <tx:method name="delete*" propagation="REQUIRED" rollback-for="Exception"/>
            <tx:method name="update*" propagation="REQUIRED" rollback-for="Exception"/>
        </tx:attributes>
    </tx:advice>
    <aop:config>//service下面所有的方法
        <aop:pointcut expression="execution(* com.lzh.hrm.service..*.*(..))" id="businessService"/>
        <aop:advisor advice-ref="txAdvice" pointcut-ref="businessService"/>
    </aop:config>
</beans>

page类

package com.lzh.hrm.util;
/**
 * 分页对象
 * @author shaokp
 *
 */
public class Page {
    /**
     * 分页总数据条数
     */
    private int recordCount;
    /**
     * 当前页
     */
    private int pageIndex;
    /**
     * 每页显示多少条数据
     */
    private int pageSize=5;
    /**
     * 一共多少页
     */
    private int totalSize;

    public int getRecordCount() {
        return this.recordCount<0?0:this.recordCount;
    }
    public void setRecordCount(int recordCount) {
        this.recordCount = recordCount;
    }
    public int getPageIndex() {
        this.pageIndex=this.pageIndex<=0?1:this.pageIndex;
        this.pageIndex=
                this.pageIndex>this.getTotalSize()
                    ?
                        this.getTotalSize()
                    :
                        this.pageIndex;
        return pageIndex;
    }
    public void setPageIndex(int pageIndex) {
        this.pageIndex = pageIndex;
    }
    public int getPageSize() {
        this.pageSize=this.pageSize<5?5:this.pageSize;
        return pageSize;
    }
    public void setPageSize(int pageSize) {
        this.pageSize = pageSize;
    }
    public int getTotalSize() {
        this.totalSize=
                this.totalSize<0
                    ?
                        0
                    :
                        (this.recordCount-1)/this.getPageSize()+1;
        return totalSize;
    }
    public void setTotalSize(int totalSize) {
        this.totalSize = totalSize;
    }
    public int getStart(){
        return (this.pageIndex-1)*this.pageSize;
    }
}

dao层测试代码

package com.lzh.hrm.dao;

import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4Cla***unner;

import com.lzh.hrm.entity.Dept;


@ContextConfiguration("classpath:spring/applicationContext.xml")
@RunWith(SpringJUnit4Cla***unner.class)
public class DeptDaoTest {
    @Autowired
    private DeptDao deptDao;
    @Test
    public void save(){
        Dept dept=new Dept("体验师","程序体验师");
        deptDao.save(dept);
    }
    @Test
    public void getById(){
        Dept Dept = deptDao.getById(1);
        System.out.println(Dept);
    }
    @Test
    public void delete(){
        deptDao.delete(8);

    }
    @Test
    public void update(){
        Dept Dept=new Dept("liuzhonghua","123456");
        Dept.setId(9);
        deptDao.update(Dept);

    }
    @Test
    public void getAll(){

        List<Dept> list=deptDao.getAll();
        for(Dept u:list){
            System.out.println(u);
        }
    }
    @Test
    public void count(){
        Map<String, Object> map=new HashMap<String, Object>();
        map.put("pname", "");
        int count =deptDao.count(map);
        System.out.println(count);
    }

    @Test
    public void getByPage(){
        Map<String, Object> map=new HashMap<String, Object>();
        map.put("start", 0);
        map.put("pageSize", 3);
        List<Dept> depts = deptDao.getByPage(map);
        for(Dept u:depts){
            System.out.println(u);
        }
    }
}