2018 IDEA 初识mybatis

版权声明：柠萌 https://blog.csdn.net/Hack_Different/article/details/82965812

一、准备

1.pom.xml

<!--引入mybatis依赖-->
<dependency>
    <groupId>org.mybatis</groupId>
    <artifactId>mybatis</artifactId>
    <version>3.4.4</version>
</dependency>
<!--引入mysql连接依赖-->
<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>5.1.43</version>
</dependency>

在build下加入

<!--加载src/main/java下所有的xml文件-->
<resources>
  <resource>
     <directory>src/main/java</directory>
        <includes>
           <include>**/*.xml</include>
        </includes>
  </resource>
</resources>

2.mybatisConfig.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE configuration
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>

    <!--1. 配置数据库环境，默认使用development数据库构建环境-->
    <environments default="development">
        <!--配置环境变量-->
        <environment id="development">
            <!--配置事务管理器类别-->
            <transactionManager type="JDBC"/>
            <!--配置数据源-->
            <dataSource type="POOLED">
                <property name="driver" value="com.mysql.jdbc.Driver"/>
                <property name="url" value="jdbc:mysql://localhost:3306/test?characterEncoding=utf-8"/>
                <property name="username" value="root"/>
                <property name="password" value="root"/>
            </dataSource>
        </environment>
    </environments>
    <!--2. 加载映射器：实体类对象/关系映射文件-->
    <mappers>
        <!-- 注:整合后才能用*加载多个 -->
        <mapper resource="cn/kaxlm6/mybatis/mapper/UsUserMapper.xml"/>
    </mappers>

</configuration>

3.UsUser.java

/**
 * (UsUser)TableInfo(obj=table:us_user, name=UsUser, comment=null, fullColumn=[ColumnInfo(obj=column:User_No, name=userNo, comment=null, type=java.lang.String, shortType=String, custom=false, ext={}), ColumnInfo(obj=column:User_Name, name=userName, comment=null, type=java.lang.String, shortType=String, custom=false, ext={}), ColumnInfo(obj=column:User_ABC, name=userAbc, comment=null, type=java.lang.String, shortType=String, custom=false, ext={}), ColumnInfo(obj=column:User_CreateDate, name=userCreatedate, comment=null, type=java.util.Date, shortType=null, custom=false, ext={}), ColumnInfo(obj=column:User_Address, name=userAddress, comment=null, type=java.lang.String, shortType=String, custom=false, ext={}), ColumnInfo(obj=column:User_detailAddress, name=userDetailaddress, comment=null, type=java.lang.String, shortType=String, custom=false, ext={}), ColumnInfo(obj=column:User_Phone, name=userPhone, comment=null, type=java.lang.String, shortType=String, custom=false, ext={}), ColumnInfo(obj=column:User_SMSPhone, name=userSmsphone, comment=null, type=java.lang.String, shortType=String, custom=false, ext={}), ColumnInfo(obj=column:Area_ID, name=areaId, comment=null, type=java.lang.Integer, shortType=null, custom=false, ext={}), ColumnInfo(obj=column:User_Type, name=userType, comment=null, type=java.lang.String, shortType=String, custom=false, ext={}), ColumnInfo(obj=column:User_PayType, name=userPaytype, comment=null, type=java.lang.String, shortType=String, custom=false, ext={}), ColumnInfo(obj=column:User_BankName, name=userBankname, comment=null, type=java.lang.String, shortType=String, custom=false, ext={}), ColumnInfo(obj=column:User_BankNum, name=userBanknum, comment=null, type=java.lang.String, shortType=String, custom=false, ext={}), ColumnInfo(obj=column:User_Formula, name=userFormula, comment=null, type=java.lang.String, shortType=String, custom=false, ext={}), ColumnInfo(obj=column:User_Money, name=userMoney, comment=null, type=java.lang.Double, shortType=null, custom=false, ext={}), ColumnInfo(obj=column:Mt_ID, name=mtId, comment=null, type=java.lang.Integer, shortType=null, custom=false, ext={}), ColumnInfo(obj=column:User_DocNum, name=userDocnum, comment=null, type=java.lang.String, shortType=String, custom=false, ext={}), ColumnInfo(obj=column:User_Pwd, name=userPwd, comment=null, type=java.lang.String, shortType=String, custom=false, ext={}), ColumnInfo(obj=column:User_ContractNum, name=userContractnum, comment=null, type=java.lang.String, shortType=String, custom=false, ext={}), ColumnInfo(obj=column:User_ContractDate, name=userContractdate, comment=null, type=java.util.Date, shortType=null, custom=false, ext={}), ColumnInfo(obj=column:User_VolumeID, name=userVolumeid, comment=null, type=java.lang.Object, shortType=null, custom=false, ext={}), ColumnInfo(obj=column:User_VolumeOrderIndex, name=userVolumeorderindex, comment=null, type=java.lang.Integer, shortType=null, custom=false, ext={}), ColumnInfo(obj=column:User_stauts, name=userStauts, comment=null, type=java.lang.Integer, shortType=null, custom=false, ext={})], pkColumn=[ColumnInfo(obj=column:User_No, name=userNo, comment=null, type=java.lang.String, shortType=String, custom=false, ext={})], otherColumn=[ColumnInfo(obj=column:User_Name, name=userName, comment=null, type=java.lang.String, shortType=String, custom=false, ext={}), ColumnInfo(obj=column:User_ABC, name=userAbc, comment=null, type=java.lang.String, shortType=String, custom=false, ext={}), ColumnInfo(obj=column:User_CreateDate, name=userCreatedate, comment=null, type=java.util.Date, shortType=null, custom=false, ext={}), ColumnInfo(obj=column:User_Address, name=userAddress, comment=null, type=java.lang.String, shortType=String, custom=false, ext={}), ColumnInfo(obj=column:User_detailAddress, name=userDetailaddress, comment=null, type=java.lang.String, shortType=String, custom=false, ext={}), ColumnInfo(obj=column:User_Phone, name=userPhone, comment=null, type=java.lang.String, shortType=String, custom=false, ext={}), ColumnInfo(obj=column:User_SMSPhone, name=userSmsphone, comment=null, type=java.lang.String, shortType=String, custom=false, ext={}), ColumnInfo(obj=column:Area_ID, name=areaId, comment=null, type=java.lang.Integer, shortType=null, custom=false, ext={}), ColumnInfo(obj=column:User_Type, name=userType, comment=null, type=java.lang.String, shortType=String, custom=false, ext={}), ColumnInfo(obj=column:User_PayType, name=userPaytype, comment=null, type=java.lang.String, shortType=String, custom=false, ext={}), ColumnInfo(obj=column:User_BankName, name=userBankname, comment=null, type=java.lang.String, shortType=String, custom=false, ext={}), ColumnInfo(obj=column:User_BankNum, name=userBanknum, comment=null, type=java.lang.String, shortType=String, custom=false, ext={}), ColumnInfo(obj=column:User_Formula, name=userFormula, comment=null, type=java.lang.String, shortType=String, custom=false, ext={}), ColumnInfo(obj=column:User_Money, name=userMoney, comment=null, type=java.lang.Double, shortType=null, custom=false, ext={}), ColumnInfo(obj=column:Mt_ID, name=mtId, comment=null, type=java.lang.Integer, shortType=null, custom=false, ext={}), ColumnInfo(obj=column:User_DocNum, name=userDocnum, comment=null, type=java.lang.String, shortType=String, custom=false, ext={}), ColumnInfo(obj=column:User_Pwd, name=userPwd, comment=null, type=java.lang.String, shortType=String, custom=false, ext={}), ColumnInfo(obj=column:User_ContractNum, name=userContractnum, comment=null, type=java.lang.String, shortType=String, custom=false, ext={}), ColumnInfo(obj=column:User_ContractDate, name=userContractdate, comment=null, type=java.util.Date, shortType=null, custom=false, ext={}), ColumnInfo(obj=column:User_VolumeID, name=userVolumeid, comment=null, type=java.lang.Object, shortType=null, custom=false, ext={}), ColumnInfo(obj=column:User_VolumeOrderIndex, name=userVolumeorderindex, comment=null, type=java.lang.Integer, shortType=null, custom=false, ext={}), ColumnInfo(obj=column:User_stauts, name=userStauts, comment=null, type=java.lang.Integer, shortType=null, custom=false, ext={})], savePackageName=cn.kaxlm6.mybatis, savePath=./src/main/java/cn/kaxlm6/mybatis, saveModelName=mybatisProject)
 *
 * @author xlm
 * @since 2018-10-08 10:58:51
 */
public class UsUser implements Serializable {

    private static final long serialVersionUID = 440092213312747616L;

    private String userNo;

    private String userName;

    private String userAbc;

    private Date userCreatedate;

    private String userAddress;

    private String userDetailaddress;

    private String userPhone;

    private String userSmsphone;

    private Integer areaId;

    private String userType;

    private String userPaytype;

    private String userBankname;

    private String userBanknum;

    private String userFormula;

    private Double userMoney;

    private Integer mtId;

    private String userDocnum;

    private String userPwd;

    private String userContractnum;

    private Date userContractdate;

    private Object userVolumeid;

    private Integer userVolumeorderindex;

    private Integer userStauts;
    
    public String getUserNo() {
        return userNo;
    }

    public void setUserNo(String userNo) {
        this.userNo = userNo;
    }
    
    public String getUserName() {
        return userName;
    }

    public void setUserName(String userName) {
        this.userName = userName;
    }
    
    public String getUserAbc() {
        return userAbc;
    }

    public void setUserAbc(String userAbc) {
        this.userAbc = userAbc;
    }
    
    public Date getUserCreatedate() {
        return userCreatedate;
    }

    public void setUserCreatedate(Date userCreatedate) {
        this.userCreatedate = userCreatedate;
    }
    
    public String getUserAddress() {
        return userAddress;
    }

    public void setUserAddress(String userAddress) {
        this.userAddress = userAddress;
    }
    
    public String getUserDetailaddress() {
        return userDetailaddress;
    }

    public void setUserDetailaddress(String userDetailaddress) {
        this.userDetailaddress = userDetailaddress;
    }
    
    public String getUserPhone() {
        return userPhone;
    }

    public void setUserPhone(String userPhone) {
        this.userPhone = userPhone;
    }
    
    public String getUserSmsphone() {
        return userSmsphone;
    }

    public void setUserSmsphone(String userSmsphone) {
        this.userSmsphone = userSmsphone;
    }
    
    public Integer getAreaId() {
        return areaId;
    }

    public void setAreaId(Integer areaId) {
        this.areaId = areaId;
    }
    
    public String getUserType() {
        return userType;
    }

    public void setUserType(String userType) {
        this.userType = userType;
    }
    
    public String getUserPaytype() {
        return userPaytype;
    }

    public void setUserPaytype(String userPaytype) {
        this.userPaytype = userPaytype;
    }
    
    public String getUserBankname() {
        return userBankname;
    }

    public void setUserBankname(String userBankname) {
        this.userBankname = userBankname;
    }
    
    public String getUserBanknum() {
        return userBanknum;
    }

    public void setUserBanknum(String userBanknum) {
        this.userBanknum = userBanknum;
    }
    
    public String getUserFormula() {
        return userFormula;
    }

    public void setUserFormula(String userFormula) {
        this.userFormula = userFormula;
    }
    
    public Double getUserMoney() {
        return userMoney;
    }

    public void setUserMoney(Double userMoney) {
        this.userMoney = userMoney;
    }
    
    public Integer getMtId() {
        return mtId;
    }

    public void setMtId(Integer mtId) {
        this.mtId = mtId;
    }
    
    public String getUserDocnum() {
        return userDocnum;
    }

    public void setUserDocnum(String userDocnum) {
        this.userDocnum = userDocnum;
    }
    
    public String getUserPwd() {
        return userPwd;
    }

    public void setUserPwd(String userPwd) {
        this.userPwd = userPwd;
    }
    
    public String getUserContractnum() {
        return userContractnum;
    }

    public void setUserContractnum(String userContractnum) {
        this.userContractnum = userContractnum;
    }
    
    public Date getUserContractdate() {
        return userContractdate;
    }

    public void setUserContractdate(Date userContractdate) {
        this.userContractdate = userContractdate;
    }
    
    public Object getUserVolumeid() {
        return userVolumeid;
    }

    public void setUserVolumeid(Object userVolumeid) {
        this.userVolumeid = userVolumeid;
    }
    
    public Integer getUserVolumeorderindex() {
        return userVolumeorderindex;
    }

    public void setUserVolumeorderindex(Integer userVolumeorderindex) {
        this.userVolumeorderindex = userVolumeorderindex;
    }
    
    public Integer getUserStauts() {
        return userStauts;
    }

    public void setUserStauts(Integer userStauts) {
        this.userStauts = userStauts;
    }

}

4.UsUserDao.java

/**
 * (UsUser)表数据库访问层
 *
 * @author xlm
 * @since 2018-10-08 11:27:24
 */
public interface UsUserDao {

    /**
     * 通过ID查询单条数据
     *
     * @param userNo 主键
     * @return 实例对象
     */
    UsUser queryById(String userNo);

    /**
     * 查询指定行数据
     *
     * @param offset 查询起始位置
     * @param limit 查询条数
     * @return 对象列表
     */
    List<UsUser> queryAllByLimit(@Param("offset") int offset, @Param("limit") int limit);


    /**
     * 通过实体作为筛选条件查询
     *
     * @param usUser 实例对象
     * @return 对象列表
     */
    List<UsUser> queryAll(UsUser usUser);

    /**
     * 新增数据
     *
     * @param usUser 实例对象
     * @return 影响行数
     */
    int insert(UsUser usUser);

    /**
     * 修改数据
     *
     * @param usUser 实例对象
     * @return 影响行数
     */
    int update(UsUser usUser);

    /**
     * 通过主键删除数据
     *
     * @param userNo 主键
     * @return 影响行数
     */
    int deleteById(String userNo);

}

5.UsUserMapper.xml

<?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="cn.kaxlm6.mybatis.dao.UsUserDao">

    <resultMap type="cn.kaxlm6.mybatis.pojo.UsUser" id="UsUserMap">
        <result property="userNo" column="User_No" jdbcType="VARCHAR"/>
        <result property="userName" column="User_Name" jdbcType="VARCHAR"/>
        <result property="userAbc" column="User_ABC" jdbcType="VARCHAR"/>
        <result property="userCreatedate" column="User_CreateDate" jdbcType="TIMESTAMP"/>
        <result property="userAddress" column="User_Address" jdbcType="VARCHAR"/>
        <result property="userDetailaddress" column="User_detailAddress" jdbcType="VARCHAR"/>
        <result property="userPhone" column="User_Phone" jdbcType="VARCHAR"/>
        <result property="userSmsphone" column="User_SMSPhone" jdbcType="VARCHAR"/>
        <result property="areaId" column="Area_ID" jdbcType="INTEGER"/>
        <result property="userType" column="User_Type" jdbcType="VARCHAR"/>
        <result property="userPaytype" column="User_PayType" jdbcType="VARCHAR"/>
        <result property="userBankname" column="User_BankName" jdbcType="VARCHAR"/>
        <result property="userBanknum" column="User_BankNum" jdbcType="VARCHAR"/>
        <result property="userFormula" column="User_Formula" jdbcType="VARCHAR"/>
        <result property="userMoney" column="User_Money" jdbcType="NUMERIC"/>
        <result property="mtId" column="Mt_ID" jdbcType="INTEGER"/>
        <result property="userDocnum" column="User_DocNum" jdbcType="VARCHAR"/>
        <result property="userPwd" column="User_Pwd" jdbcType="VARCHAR"/>
        <result property="userContractnum" column="User_ContractNum" jdbcType="VARCHAR"/>
        <result property="userContractdate" column="User_ContractDate" jdbcType="TIMESTAMP"/>
        <result property="userVolumeid" column="User_VolumeID" jdbcType="OTHER"/>
        <result property="userVolumeorderindex" column="User_VolumeOrderIndex" jdbcType="INTEGER"/>
        <result property="userStauts" column="User_stauts" jdbcType="INTEGER"/>
    </resultMap>

    <!--查询单个-->
    <select id="queryById" resultMap="UsUserMap">
        select
          User_No, User_Name, User_ABC, User_CreateDate, User_Address, User_detailAddress, User_Phone, User_SMSPhone, Area_ID, User_Type, User_PayType, User_BankName, User_BankNum, User_Formula, User_Money, Mt_ID, User_DocNum, User_Pwd, User_ContractNum, User_ContractDate, User_VolumeID, User_VolumeOrderIndex, User_stauts
        from tapwater.us_user
        where User_No = #{userNo}
    </select>

    <!--查询指定行数据-->
    <select id="queryAllByLimit" resultMap="UsUserMap">
        select
          User_No, User_Name, User_ABC, User_CreateDate, User_Address, User_detailAddress, User_Phone, User_SMSPhone, Area_ID, User_Type, User_PayType, User_BankName, User_BankNum, User_Formula, User_Money, Mt_ID, User_DocNum, User_Pwd, User_ContractNum, User_ContractDate, User_VolumeID, User_VolumeOrderIndex, User_stauts
        from tapwater.us_user
        limit #{offset}, #{limit}
    </select>

    <!--通过实体作为筛选条件查询-->
    <select id="queryAll" resultMap="UsUserMap">
        select
          User_No, User_Name, User_ABC, User_CreateDate, User_Address, User_detailAddress, User_Phone, User_SMSPhone, Area_ID, User_Type, User_PayType, User_BankName, User_BankNum, User_Formula, User_Money, Mt_ID, User_DocNum, User_Pwd, User_ContractNum, User_ContractDate, User_VolumeID, User_VolumeOrderIndex, User_stauts
        from tapwater.us_user
        <where>
            <if test="userNo != null and userNo != ''">
                and User_No = #{userNo}
            </if>
            <if test="userName != null and userName != ''">
                and User_Name = #{userName}
            </if>
            <if test="userAbc != null and userAbc != ''">
                and User_ABC = #{userAbc}
            </if>
            <if test="userCreatedate != null">
                and User_CreateDate = #{userCreatedate}
            </if>
            <if test="userAddress != null and userAddress != ''">
                and User_Address = #{userAddress}
            </if>
            <if test="userDetailaddress != null and userDetailaddress != ''">
                and User_detailAddress = #{userDetailaddress}
            </if>
            <if test="userPhone != null and userPhone != ''">
                and User_Phone = #{userPhone}
            </if>
            <if test="userSmsphone != null and userSmsphone != ''">
                and User_SMSPhone = #{userSmsphone}
            </if>
            <if test="areaId != null">
                and Area_ID = #{areaId}
            </if>
            <if test="userType != null and userType != ''">
                and User_Type = #{userType}
            </if>
            <if test="userPaytype != null and userPaytype != ''">
                and User_PayType = #{userPaytype}
            </if>
            <if test="userBankname != null and userBankname != ''">
                and User_BankName = #{userBankname}
            </if>
            <if test="userBanknum != null and userBanknum != ''">
                and User_BankNum = #{userBanknum}
            </if>
            <if test="userFormula != null and userFormula != ''">
                and User_Formula = #{userFormula}
            </if>
            <if test="userMoney != null">
                and User_Money = #{userMoney}
            </if>
            <if test="mtId != null">
                and Mt_ID = #{mtId}
            </if>
            <if test="userDocnum != null and userDocnum != ''">
                and User_DocNum = #{userDocnum}
            </if>
            <if test="userPwd != null and userPwd != ''">
                and User_Pwd = #{userPwd}
            </if>
            <if test="userContractnum != null and userContractnum != ''">
                and User_ContractNum = #{userContractnum}
            </if>
            <if test="userContractdate != null">
                and User_ContractDate = #{userContractdate}
            </if>
            <if test="userVolumeid != null">
                and User_VolumeID = #{userVolumeid}
            </if>
            <if test="userVolumeorderindex != null">
                and User_VolumeOrderIndex = #{userVolumeorderindex}
            </if>
            <if test="userStauts != null">
                and User_stauts = #{userStauts}
            </if>
        </where>
    </select>

    <!--新增所有列-->
    <insert id="insert" keyProperty="userNo" useGeneratedKeys="true">
        insert into tapwater.us_user(User_Name, User_ABC, User_CreateDate, User_Address, User_detailAddress, User_Phone, User_SMSPhone, Area_ID, User_Type, User_PayType, User_BankName, User_BankNum, User_Formula, User_Money, Mt_ID, User_DocNum, User_Pwd, User_ContractNum, User_ContractDate, User_VolumeID, User_VolumeOrderIndex, User_stauts)
        values (#{userName}, #{userAbc}, #{userCreatedate}, #{userAddress}, #{userDetailaddress}, #{userPhone}, #{userSmsphone}, #{areaId}, #{userType}, #{userPaytype}, #{userBankname}, #{userBanknum}, #{userFormula}, #{userMoney}, #{mtId}, #{userDocnum}, #{userPwd}, #{userContractnum}, #{userContractdate}, #{userVolumeid}, #{userVolumeorderindex}, #{userStauts})
    </insert>

    <!--通过主键修改数据-->
    <update id="update">
        update tapwater.us_user
        <set>
            <if test="userName != null and userName != ''">
                User_Name = #{userName},
            </if>
            <if test="userAbc != null and userAbc != ''">
                User_ABC = #{userAbc},
            </if>
            <if test="userCreatedate != null">
                User_CreateDate = #{userCreatedate},
            </if>
            <if test="userAddress != null and userAddress != ''">
                User_Address = #{userAddress},
            </if>
            <if test="userDetailaddress != null and userDetailaddress != ''">
                User_detailAddress = #{userDetailaddress},
            </if>
            <if test="userPhone != null and userPhone != ''">
                User_Phone = #{userPhone},
            </if>
            <if test="userSmsphone != null and userSmsphone != ''">
                User_SMSPhone = #{userSmsphone},
            </if>
            <if test="areaId != null">
                Area_ID = #{areaId},
            </if>
            <if test="userType != null and userType != ''">
                User_Type = #{userType},
            </if>
            <if test="userPaytype != null and userPaytype != ''">
                User_PayType = #{userPaytype},
            </if>
            <if test="userBankname != null and userBankname != ''">
                User_BankName = #{userBankname},
            </if>
            <if test="userBanknum != null and userBanknum != ''">
                User_BankNum = #{userBanknum},
            </if>
            <if test="userFormula != null and userFormula != ''">
                User_Formula = #{userFormula},
            </if>
            <if test="userMoney != null">
                User_Money = #{userMoney},
            </if>
            <if test="mtId != null">
                Mt_ID = #{mtId},
            </if>
            <if test="userDocnum != null and userDocnum != ''">
                User_DocNum = #{userDocnum},
            </if>
            <if test="userPwd != null and userPwd != ''">
                User_Pwd = #{userPwd},
            </if>
            <if test="userContractnum != null and userContractnum != ''">
                User_ContractNum = #{userContractnum},
            </if>
            <if test="userContractdate != null">
                User_ContractDate = #{userContractdate},
            </if>
            <if test="userVolumeid != null">
                User_VolumeID = #{userVolumeid},
            </if>
            <if test="userVolumeorderindex != null">
                User_VolumeOrderIndex = #{userVolumeorderindex},
            </if>
            <if test="userStauts != null">
                User_stauts = #{userStauts},
            </if>
        </set>
        where User_No = #{userNo}
    </update>

    <!--通过主键删除-->
    <delete id="deleteById">
        delete from tapwater.us_user where User_No = #{userNo}
    </delete>

</mapper>

二、测试

public class Tests {

    public static void main(String[] args) throws Exception {

        /**
         * 获得SqlSession对象，通过SqlSession操作CRUD
         *
         */
        SqlSession sqlSession;

        //通过Resources类加载核心配置文件，得到文件的输入流
        InputStream inputStream = Resources.getResourceAsStream("mybatisConfig.xml");
        //创建会话工厂，编译配置文件流，获得sqlsessionfactory
        SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
        //通过sqlSessionFactory得到sqlsession对象
        sqlSession = sqlSessionFactory.openSession();

        //1.查询单条数据
        Object o = sqlSession.selectOne("XlmUsUserMapper.queryById", "01072609X0");

        UsUser usUser = (UsUser) o;

        System.out.println(usUser.getUserNo() + "   " + usUser.getUserName());

        //2.查询指定行数数据
        Map<String,Integer> parMap = new HashMap<String,Integer>(10);
        parMap.put("offset",1);
        parMap.put("limit",3);

        List<UsUser> usUserList = sqlSession.selectList("XlmUsUserMapper.queryAllByLimit", parMap);

        for (UsUser us:usUserList) {
            System.out.println(us.getUserNo());
        }

        //3.使用接口代理（小编就没写Biz了，直接用的是Dao了）
        /**
         * 注：
         *
         * 1.修改实体类的Mapper映射文件中的namespace名字空间，即：
         * <mapper namespace="放接口的全路径名">
         * 	例：<mapper namespace="cn.zking.dao.UsUserDao">
         *
         * 2.将Mapper映射文件中的CRUD标签id与Interface接口中的CRUD方法名一一对应。
         * <select id="放接口中对应的方法名" ……>
         * 	例：<select id="queryAllByLimit" ……>
         * 	    
         */
        UsUserDao mapper = sqlSession.getMapper(UsUserDao.class);

        List<UsUser> usUserLists = mapper.queryAllByLimit(1, 3);

        for (UsUser us : usUserLists) {
            System.out.println(us.getUserNo());
        }

        sqlSession.close();

    }
}