diff --git a/27.Spring-Boot-Mapper-PageHelper/pom.xml b/27.Spring-Boot-Mapper-PageHelper/pom.xml
new file mode 100644
index 0000000..607a178
--- /dev/null
+++ b/27.Spring-Boot-Mapper-PageHelper/pom.xml
@@ -0,0 +1,115 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+
+	<groupId>com.springboot</groupId>
+	<artifactId>Spring-Boot-Mapper-PageHelper</artifactId>
+	<version>0.0.1-SNAPSHOT</version>
+	<packaging>jar</packaging>
+
+	<name>Spring-Boot-Mapper-PageHelper</name>
+	<description>Demo project for Spring Boot</description>
+
+	<parent>
+		<groupId>org.springframework.boot</groupId>
+		<artifactId>spring-boot-starter-parent</artifactId>
+		<version>1.5.9.RELEASE</version>
+		<relativePath/> <!-- lookup parent from repository -->
+	</parent>
+
+	<properties>
+		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
+		<java.version>1.7</java.version>
+	</properties>
+
+	<dependencies>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-web</artifactId>
+		</dependency>
+		
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-test</artifactId>
+		</dependency>
+		
+		<!--mybatis-->
+		<dependency>
+			<groupId>org.mybatis.spring.boot</groupId>
+			<artifactId>mybatis-spring-boot-starter</artifactId>
+			<version>1.3.1</version>
+		</dependency>
+		<!--通用mapper-->
+		<dependency>
+			<groupId>tk.mybatis</groupId>
+			<artifactId>mapper-spring-boot-starter</artifactId>
+			<version>1.1.5</version>
+		</dependency>
+		<!--pagehelper 分页插件-->
+		<dependency>
+			<groupId>com.github.pagehelper</groupId>
+			<artifactId>pagehelper-spring-boot-starter</artifactId>
+			<version>1.2.3</version>
+		</dependency>
+		
+		<dependency>
+			<groupId>com.oracle</groupId>
+			<artifactId>ojdbc6</artifactId>
+			<version>6.0</version>
+		</dependency>
+		<dependency>
+		   <groupId>com.alibaba</groupId>
+		   <artifactId>druid-spring-boot-starter</artifactId>
+		   <version>1.1.6</version>
+		</dependency>
+		
+	</dependencies>
+
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-maven-plugin</artifactId>
+			</plugin>
+			
+			<plugin>
+				<groupId>org.mybatis.generator</groupId>
+				<artifactId>mybatis-generator-maven-plugin</artifactId>
+				<version>1.3.5</version>
+				<dependencies>
+					<dependency>
+						<groupId>com.oracle</groupId>
+						<artifactId>ojdbc6</artifactId>
+						<version>6.0</version>
+					</dependency>
+					<dependency>
+						<groupId>tk.mybatis</groupId>
+						<artifactId>mapper</artifactId>
+						<version>3.4.0</version>
+					</dependency>
+				</dependencies>
+				<executions>
+					<execution>
+						<id>Generate MyBatis Artifacts</id>
+						<phase>package</phase>
+						<goals>
+							<goal>generate</goal>
+						</goals>
+					</execution>
+				</executions>
+				<configuration>
+					<!--允许移动生成的文件 -->
+					<verbose>true</verbose>
+					<!-- 是否覆盖 -->
+					<overwrite>true</overwrite>
+					<!-- 自动生成的配置 -->
+					<configurationFile>src/main/resources/mybatis-generator.xml</configurationFile>
+				</configuration>
+			</plugin>
+		</plugins>
+	</build>
+
+
+</project>
diff --git a/27.Spring-Boot-Mapper-PageHelper/src/main/java/com/springboot/Application.java b/27.Spring-Boot-Mapper-PageHelper/src/main/java/com/springboot/Application.java
new file mode 100644
index 0000000..449e3c6
--- /dev/null
+++ b/27.Spring-Boot-Mapper-PageHelper/src/main/java/com/springboot/Application.java
@@ -0,0 +1,15 @@
+package com.springboot;
+
+import org.mybatis.spring.annotation.MapperScan;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+
+@SpringBootApplication
+@MapperScan("com.springboot.mapper")
+public class Application {
+	
+	public static void main(String[] args) {
+		SpringApplication.run(Application.class,args);
+	}
+}
diff --git a/27.Spring-Boot-Mapper-PageHelper/src/main/java/com/springboot/ApplicationTest.java b/27.Spring-Boot-Mapper-PageHelper/src/main/java/com/springboot/ApplicationTest.java
new file mode 100644
index 0000000..88b498b
--- /dev/null
+++ b/27.Spring-Boot-Mapper-PageHelper/src/main/java/com/springboot/ApplicationTest.java
@@ -0,0 +1,67 @@
+package com.springboot;
+
+import java.util.Date;
+import java.util.List;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+
+import com.github.pagehelper.PageHelper;
+import com.github.pagehelper.PageInfo;
+import com.springboot.bean.User;
+import com.springboot.service.UserService;
+
+import tk.mybatis.mapper.entity.Example;
+
+@RunWith(SpringJUnit4ClassRunner.class)
+@SpringBootTest(classes = Application.class)
+public class ApplicationTest {
+
+	@Autowired
+	private UserService userService;
+
+	@Test
+	public void test() throws Exception {
+
+		// User user = new User();
+		// user.setId(userService.getSequence("seq_user"));
+		// user.setUsername("scott");
+		// user.setPasswd("ac089b11709f9b9e9980e7c497268dfa");
+		// user.setCreateTime(new Date());
+		// user.setStatus("0");
+		// this.userService.save(user);
+
+		
+//		Example example = new Example(User.class);
+//		example.createCriteria().andCondition("username like '%i%'");
+//		example.setOrderByClause("id desc");
+//		List<User> userList = this.userService.selectByExample(example);
+//		for (User u : userList) {
+//			System.out.println(u.getUsername());
+//		}
+//		
+//		List<User> all = this.userService.selectAll();
+//		for (User u : all) {
+//			System.out.println(u.getUsername());
+//		}
+//		
+//		User user = new User();
+//		user.setId(1l);
+//		user = this.userService.selectByKey(user);
+//		System.out.println(user.getUsername());
+//
+//		user.setId(4l);
+//		this.userService.delete(user);
+
+		PageHelper.startPage(2, 2);
+		List<User> list = userService.selectAll();
+		PageInfo<User> pageInfo = new PageInfo<User>(list);
+		List<User> result = pageInfo.getList();
+		for (User u : result) {
+			System.out.println(u.getUsername());
+		}
+	}
+}
diff --git a/27.Spring-Boot-Mapper-PageHelper/src/main/java/com/springboot/bean/User.java b/27.Spring-Boot-Mapper-PageHelper/src/main/java/com/springboot/bean/User.java
new file mode 100644
index 0000000..030bc2a
--- /dev/null
+++ b/27.Spring-Boot-Mapper-PageHelper/src/main/java/com/springboot/bean/User.java
@@ -0,0 +1,96 @@
+package com.springboot.bean;
+
+import java.util.Date;
+
+import javax.persistence.Column;
+import javax.persistence.Id;
+import javax.persistence.Table;
+
+@Table(name = "T_USER")
+public class User {
+    @Id
+    @Column(name = "ID")
+    private Long id;
+
+    @Column(name = "USERNAME")
+    private String username;
+
+    @Column(name = "PASSWD")
+    private String passwd;
+
+    @Column(name = "CREATE_TIME")
+    private Date createTime;
+
+    @Column(name = "STATUS")
+    private String status;
+
+    /**
+     * @return ID
+     */
+    public Long getId() {
+        return id;
+    }
+
+    /**
+     * @param id
+     */
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    /**
+     * @return USERNAME
+     */
+    public String getUsername() {
+        return username;
+    }
+
+    /**
+     * @param username
+     */
+    public void setUsername(String username) {
+        this.username = username == null ? null : username.trim();
+    }
+
+    /**
+     * @return PASSWD
+     */
+    public String getPasswd() {
+        return passwd;
+    }
+
+    /**
+     * @param passwd
+     */
+    public void setPasswd(String passwd) {
+        this.passwd = passwd == null ? null : passwd.trim();
+    }
+
+    /**
+     * @return CREATE_TIME
+     */
+    public Date getCreateTime() {
+        return createTime;
+    }
+
+    /**
+     * @param createTime
+     */
+    public void setCreateTime(Date createTime) {
+        this.createTime = createTime;
+    }
+
+    /**
+     * @return STATUS
+     */
+    public String getStatus() {
+        return status;
+    }
+
+    /**
+     * @param status
+     */
+    public void setStatus(String status) {
+        this.status = status == null ? null : status.trim();
+    }
+}
\ No newline at end of file
diff --git a/27.Spring-Boot-Mapper-PageHelper/src/main/java/com/springboot/config/MyMapper.java b/27.Spring-Boot-Mapper-PageHelper/src/main/java/com/springboot/config/MyMapper.java
new file mode 100644
index 0000000..88edb47
--- /dev/null
+++ b/27.Spring-Boot-Mapper-PageHelper/src/main/java/com/springboot/config/MyMapper.java
@@ -0,0 +1,8 @@
+package com.springboot.config;
+
+import tk.mybatis.mapper.common.Mapper;
+import tk.mybatis.mapper.common.MySqlMapper;
+
+public interface MyMapper<T> extends Mapper<T>, MySqlMapper<T> {
+	
+}
diff --git a/27.Spring-Boot-Mapper-PageHelper/src/main/java/com/springboot/mapper/SeqenceMapper.java b/27.Spring-Boot-Mapper-PageHelper/src/main/java/com/springboot/mapper/SeqenceMapper.java
new file mode 100644
index 0000000..4affa31
--- /dev/null
+++ b/27.Spring-Boot-Mapper-PageHelper/src/main/java/com/springboot/mapper/SeqenceMapper.java
@@ -0,0 +1,9 @@
+package com.springboot.mapper;
+
+import org.apache.ibatis.annotations.Param;
+import org.apache.ibatis.annotations.Select;
+
+public interface SeqenceMapper {
+	@Select("select ${seqName}.nextval from dual")
+	Long getSequence(@Param("seqName") String seqName);
+}
diff --git a/27.Spring-Boot-Mapper-PageHelper/src/main/java/com/springboot/mapper/UserMapper.java b/27.Spring-Boot-Mapper-PageHelper/src/main/java/com/springboot/mapper/UserMapper.java
new file mode 100644
index 0000000..217dc84
--- /dev/null
+++ b/27.Spring-Boot-Mapper-PageHelper/src/main/java/com/springboot/mapper/UserMapper.java
@@ -0,0 +1,7 @@
+package com.springboot.mapper;
+
+import com.springboot.bean.User;
+import com.springboot.config.MyMapper;
+
+public interface UserMapper extends MyMapper<User> {
+}
\ No newline at end of file
diff --git a/27.Spring-Boot-Mapper-PageHelper/src/main/java/com/springboot/service/IService.java b/27.Spring-Boot-Mapper-PageHelper/src/main/java/com/springboot/service/IService.java
new file mode 100644
index 0000000..38e53b5
--- /dev/null
+++ b/27.Spring-Boot-Mapper-PageHelper/src/main/java/com/springboot/service/IService.java
@@ -0,0 +1,27 @@
+package com.springboot.service;
+
+import java.util.List;
+
+import org.apache.ibatis.annotations.Param;
+import org.springframework.stereotype.Service;
+
+@Service
+public interface IService<T> {
+
+	Long getSequence(@Param("seqName") String seqName);
+	
+	List<T> selectAll();
+	
+    T selectByKey(Object key);
+
+    int save(T entity);
+
+    int delete(Object key);
+
+    int updateAll(T entity);
+
+    int updateNotNull(T entity);
+
+    List<T> selectByExample(Object example);
+
+}
diff --git a/27.Spring-Boot-Mapper-PageHelper/src/main/java/com/springboot/service/UserService.java b/27.Spring-Boot-Mapper-PageHelper/src/main/java/com/springboot/service/UserService.java
new file mode 100644
index 0000000..58a3a29
--- /dev/null
+++ b/27.Spring-Boot-Mapper-PageHelper/src/main/java/com/springboot/service/UserService.java
@@ -0,0 +1,7 @@
+package com.springboot.service;
+
+import com.springboot.bean.User;
+
+public interface UserService extends IService<User>{
+	
+}
diff --git a/27.Spring-Boot-Mapper-PageHelper/src/main/java/com/springboot/service/impl/BaseService.java b/27.Spring-Boot-Mapper-PageHelper/src/main/java/com/springboot/service/impl/BaseService.java
new file mode 100644
index 0000000..448033e
--- /dev/null
+++ b/27.Spring-Boot-Mapper-PageHelper/src/main/java/com/springboot/service/impl/BaseService.java
@@ -0,0 +1,70 @@
+package com.springboot.service.impl;
+
+import java.util.List;
+
+import org.apache.ibatis.annotations.Param;
+import org.springframework.beans.factory.annotation.Autowired;
+
+import com.springboot.mapper.SeqenceMapper;
+import com.springboot.service.IService;
+
+import tk.mybatis.mapper.common.Mapper;
+
+public abstract class BaseService<T> implements IService<T> {
+
+    @Autowired
+    protected Mapper<T> mapper;
+    @Autowired
+    protected SeqenceMapper seqenceMapper;
+    
+    public Mapper<T> getMapper() {
+        return mapper;
+    }
+    @Override
+    public Long getSequence(@Param("seqName") String seqName){
+    	return seqenceMapper.getSequence(seqName);
+    }
+    
+    @Override
+    public List<T> selectAll() {
+        //说明：查询所有数据
+        return mapper.selectAll();
+    }
+    
+    @Override
+    public T selectByKey(Object key) {
+        //说明：根据主键字段进行查询，方法参数必须包含完整的主键属性，查询条件使用等号
+        return mapper.selectByPrimaryKey(key);
+    }
+
+    @Override
+    public int save(T entity) {
+        //说明：保存一个实体，null的属性也会保存，不会使用数据库默认值
+        return mapper.insert(entity);
+    }
+
+    @Override
+    public int delete(Object key) {
+        //说明：根据主键字段进行删除，方法参数必须包含完整的主键属性
+        return mapper.deleteByPrimaryKey(key);
+    }
+
+    @Override
+    public int updateAll(T entity) {
+        //说明：根据主键更新实体全部字段，null值会被更新
+        return mapper.updateByPrimaryKey(entity);
+    }
+
+    @Override
+    public int updateNotNull(T entity) {
+        //根据主键更新属性不为null的值
+        return mapper.updateByPrimaryKeySelective(entity);
+    }
+
+    @Override
+    public List<T> selectByExample(Object example) {
+        //说明：根据Example条件进行查询
+        //重点：这个查询支持通过Example类指定查询列，通过selectProperties方法指定查询列
+        return mapper.selectByExample(example);
+    }
+}
diff --git a/27.Spring-Boot-Mapper-PageHelper/src/main/java/com/springboot/service/impl/UserServiceImpl.java b/27.Spring-Boot-Mapper-PageHelper/src/main/java/com/springboot/service/impl/UserServiceImpl.java
new file mode 100644
index 0000000..fea6e75
--- /dev/null
+++ b/27.Spring-Boot-Mapper-PageHelper/src/main/java/com/springboot/service/impl/UserServiceImpl.java
@@ -0,0 +1,12 @@
+package com.springboot.service.impl;
+
+import org.springframework.stereotype.Repository;
+
+import com.springboot.bean.User;
+import com.springboot.service.UserService;
+
+@Repository("userService")
+public class UserServiceImpl extends BaseService<User> implements UserService{
+
+	
+}
diff --git a/27.Spring-Boot-Mapper-PageHelper/src/main/resources/application.yml b/27.Spring-Boot-Mapper-PageHelper/src/main/resources/application.yml
new file mode 100644
index 0000000..c6971f5
--- /dev/null
+++ b/27.Spring-Boot-Mapper-PageHelper/src/main/resources/application.yml
@@ -0,0 +1,92 @@
+server:
+  context-path: /web
+
+spring:
+  datasource:
+    druid:
+      # 数据库访问配置, 使用druid数据源
+      type: com.alibaba.druid.pool.DruidDataSource
+      driver-class-name: oracle.jdbc.driver.OracleDriver
+      url: jdbc:oracle:thin:@localhost:1521:ORCL
+      username: scott
+      password: 6742530
+      # 连接池配置
+      initial-size: 5
+      min-idle: 5
+      max-active: 20
+      # 连接等待超时时间
+      max-wait: 30000
+      # 配置检测可以关闭的空闲连接间隔时间
+      time-between-eviction-runs-millis: 60000
+      # 配置连接在池中的最小生存时间
+      min-evictable-idle-time-millis: 300000
+      validation-query: select '1' from dual
+      test-while-idle: true
+      test-on-borrow: false
+      test-on-return: false
+      # 打开PSCache，并且指定每个连接上PSCache的大小
+      pool-prepared-statements: true
+      max-open-prepared-statements: 20
+      max-pool-prepared-statement-per-connection-size: 20
+      # 配置监控统计拦截的filters, 去掉后监控界面sql无法统计, 'wall'用于防火墙
+      filters: stat,wall
+      # Spring监控AOP切入点，如x.y.z.service.*,配置多个英文逗号分隔
+      aop-patterns: com.springboot.servie.*
+      
+    
+      # WebStatFilter配置
+      web-stat-filter:
+        enabled: true
+        # 添加过滤规则
+        url-pattern: /*
+        # 忽略过滤的格式
+        exclusions: '*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*'
+      
+      # StatViewServlet配置 
+      stat-view-servlet:
+        enabled: true
+        # 访问路径为/druid时，跳转到StatViewServlet
+        url-pattern: /druid/*
+        # 是否能够重置数据
+        reset-enable: false
+        # 需要账号密码才能访问控制台
+        login-username: druid
+        login-password: druid123
+        # IP白名单
+        # allow: 127.0.0.1
+        #　IP黑名单（共同存在时，deny优先于allow）
+        # deny: 192.168.1.218
+      
+      # 配置StatFilter
+      filter: 
+        stat: 
+          log-slow-sql: true
+
+mybatis:
+  # type-aliases扫描路径
+  type-aliases-package: com.springboot.bean
+  # mapper xml实现扫描路径
+  mapper-locations: classpath:mapper/*.xml
+  property:
+    order: BEFORE
+
+
+#mappers 多个接口时逗号隔开
+mapper:
+  mappers: com.springboot.config.MyMapper
+  not-empty: false
+  identity: oracle
+
+#pagehelper
+pagehelper: 
+  helperDialect: oracle
+  reasonable: true
+  supportMethodsArguments: true
+  params: count=countSql
+
+    
+logging:
+  level:
+    com:
+      springboot:
+        mapper: debug
\ No newline at end of file
diff --git a/27.Spring-Boot-Mapper-PageHelper/src/main/resources/mapper/UserMapper.xml b/27.Spring-Boot-Mapper-PageHelper/src/main/resources/mapper/UserMapper.xml
new file mode 100644
index 0000000..2000afd
--- /dev/null
+++ b/27.Spring-Boot-Mapper-PageHelper/src/main/resources/mapper/UserMapper.xml
@@ -0,0 +1,14 @@
+<?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.springboot.mapper.UserMapper">
+  <resultMap id="BaseResultMap" type="com.springboot.bean.User">
+    <!--
+      WARNING - @mbg.generated
+    -->
+    <id column="ID" jdbcType="DECIMAL" property="id" />
+    <result column="USERNAME" jdbcType="VARCHAR" property="username" />
+    <result column="PASSWD" jdbcType="VARCHAR" property="passwd" />
+    <result column="CREATE_TIME" jdbcType="TIMESTAMP" property="createTime" />
+    <result column="STATUS" jdbcType="CHAR" property="status" />
+  </resultMap>
+</mapper>
\ No newline at end of file
diff --git a/27.Spring-Boot-Mapper-PageHelper/src/main/resources/mybatis-generator.xml b/27.Spring-Boot-Mapper-PageHelper/src/main/resources/mybatis-generator.xml
new file mode 100644
index 0000000..04cec3d
--- /dev/null
+++ b/27.Spring-Boot-Mapper-PageHelper/src/main/resources/mybatis-generator.xml
@@ -0,0 +1,57 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE generatorConfiguration
+        PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
+        "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">
+<generatorConfiguration>
+
+    <context id="oracle" targetRuntime="MyBatis3Simple" defaultModelType="flat">
+
+        <plugin type="tk.mybatis.mapper.generator.MapperPlugin">
+            <property name="mappers" value="com.springboot.config.MyMapper" />
+            <!--caseSensitive默认false，当数据库表名区分大小写时，可以将该属性设置为true-->
+          <property name="caseSensitive" value="false"/>
+        </plugin>
+
+        <!-- 阻止生成自动注释 -->
+        <commentGenerator>
+            <property name="javaFileEncoding" value="UTF-8"/>
+            <property name="suppressDate" value="true"/>
+            <property name="suppressAllComments" value="true"/>
+        </commentGenerator>
+
+        <!--数据库链接地址账号密码-->
+        <jdbcConnection driverClass="oracle.jdbc.driver.OracleDriver"
+                        connectionURL="jdbc:oracle:thin:@localhost:1521:ORCL"
+                        userId="scott"
+                        password="6742530">
+        </jdbcConnection>
+
+        <javaTypeResolver>
+            <property name="forceBigDecimals" value="false"/>
+        </javaTypeResolver>
+
+        <!--生成Model类存放位置-->
+        <javaModelGenerator targetPackage="com.springboot.bean" targetProject="src/main/java">
+            <property name="enableSubPackages" value="true"/>
+            <property name="trimStrings" value="true"/>
+        </javaModelGenerator>
+
+        <!--生成映射文件存放位置-->
+        <sqlMapGenerator targetPackage="mapper" targetProject="src/main/resources">
+            <property name="enableSubPackages" value="true"/>
+        </sqlMapGenerator>
+
+        <!--生成Dao类存放位置-->
+        <!-- 客户端代码，生成易于使用的针对Model对象和XML配置文件 的代码
+                type="ANNOTATEDMAPPER",生成Java Model 和基于注解的Mapper对象
+                type="XMLMAPPER",生成SQLMap XML文件和独立的Mapper接口 -->
+       <javaClientGenerator type="XMLMAPPER" targetPackage="com.springboot.mapper" targetProject="src/main/java">
+            <property name="enableSubPackages" value="true"/>
+       </javaClientGenerator>
+
+        <!--生成对应表及类名去掉Mybatis Generator生成的一堆 example-->
+        <table tableName="T_user" domainObjectName="User" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false">
+            <generatedKey column="id" sqlStatement="oralce" identity="true"/>
+        </table>
+    </context>
+</generatorConfiguration>
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