diff --git a/Chapter3-2-4/pom.xml b/Chapter3-2-4/pom.xml
new file mode 100755
index 0000000..cdb4d43
--- /dev/null
+++ b/Chapter3-2-4/pom.xml
@@ -0,0 +1,61 @@
+<?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.didispace</groupId>
+	<artifactId>demo</artifactId>
+	<version>1.0.0</version>
+	<packaging>jar</packaging>
+
+	<name>demo</name>
+	<description>Spring Boot project</description>
+
+	<parent>
+		<groupId>org.springframework.boot</groupId>
+		<artifactId>spring-boot-starter-parent</artifactId>
+		<version>1.3.2.RELEASE</version>
+		<relativePath/> <!-- lookup parent from repository -->
+	</parent>
+
+	<properties>
+		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+		<java.version>1.8</java.version>
+	</properties>
+
+	<dependencies>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-test</artifactId>
+			<scope>test</scope>
+		</dependency>
+
+		<dependency>
+			<groupId>mysql</groupId>
+			<artifactId>mysql-connector-java</artifactId>
+			<version>5.1.21</version>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-data-jpa</artifactId>
+		</dependency>
+
+	</dependencies>
+	
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-maven-plugin</artifactId>
+			</plugin>
+		</plugins>
+	</build>
+
+
+</project>
diff --git a/Chapter3-2-4/src/main/java/com/didispace/Application.java b/Chapter3-2-4/src/main/java/com/didispace/Application.java
new file mode 100755
index 0000000..c8fee3c
--- /dev/null
+++ b/Chapter3-2-4/src/main/java/com/didispace/Application.java
@@ -0,0 +1,20 @@
+package com.didispace;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.autoconfigure.jdbc.DataSourceBuilder;
+import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Primary;
+import org.springframework.jdbc.core.JdbcTemplate;
+
+import javax.sql.DataSource;
+
+@SpringBootApplication
+public class Application {
+
+	public static void main(String[] args) {
+		SpringApplication.run(Application.class, args);
+	}
+
+}
diff --git a/Chapter3-2-4/src/main/java/com/didispace/DataSourceConfig.java b/Chapter3-2-4/src/main/java/com/didispace/DataSourceConfig.java
new file mode 100644
index 0000000..9622419
--- /dev/null
+++ b/Chapter3-2-4/src/main/java/com/didispace/DataSourceConfig.java
@@ -0,0 +1,49 @@
+package com.didispace;
+
+import org.springframework.beans.factory.annotation.Qualifier;
+import org.springframework.boot.autoconfigure.jdbc.DataSourceBuilder;
+import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Primary;
+import org.springframework.jdbc.core.JdbcTemplate;
+
+import javax.sql.DataSource;
+
+/**
+ * @author 程序猿DD
+ * @version 1.0.0
+ * @date 16/3/26 下午9:11.
+ * @blog http://blog.didispace.com
+ */
+@Configuration
+public class DataSourceConfig {
+
+    @Bean(name = "primaryDataSource")
+    @Qualifier("primaryDataSource")
+    @ConfigurationProperties(prefix="spring.datasource.primary")
+    public DataSource primaryDataSource() {
+        return DataSourceBuilder.create().build();
+    }
+
+    @Bean(name = "secondaryDataSource")
+    @Qualifier("secondaryDataSource")
+    @Primary
+    @ConfigurationProperties(prefix="spring.datasource.secondary")
+    public DataSource secondaryDataSource() {
+        return DataSourceBuilder.create().build();
+    }
+
+    @Bean(name = "primaryJdbcTemplate")
+    public JdbcTemplate primaryJdbcTemplate(
+            @Qualifier("primaryDataSource") DataSource dataSource) {
+        return new JdbcTemplate(dataSource);
+    }
+
+    @Bean(name = "secondaryJdbcTemplate")
+    public JdbcTemplate secondaryJdbcTemplate(
+            @Qualifier("secondaryDataSource") DataSource dataSource) {
+        return new JdbcTemplate(dataSource);
+    }
+
+}
diff --git a/Chapter3-2-4/src/main/resources/application.properties b/Chapter3-2-4/src/main/resources/application.properties
new file mode 100755
index 0000000..b437ea4
--- /dev/null
+++ b/Chapter3-2-4/src/main/resources/application.properties
@@ -0,0 +1,9 @@
+spring.datasource.primary.url=jdbc:mysql://localhost:3306/test1
+spring.datasource.primary.username=root
+spring.datasource.primary.password=root
+spring.datasource.primary.driver-class-name=com.mysql.jdbc.Driver
+
+spring.datasource.secondary.url=jdbc:mysql://localhost:3306/test2
+spring.datasource.secondary.username=root
+spring.datasource.secondary.password=root
+spring.datasource.secondary.driver-class-name=com.mysql.jdbc.Driver
diff --git a/Chapter3-2-4/src/test/java/com/didispace/ApplicationTests.java b/Chapter3-2-4/src/test/java/com/didispace/ApplicationTests.java
new file mode 100755
index 0000000..f8e99e6
--- /dev/null
+++ b/Chapter3-2-4/src/test/java/com/didispace/ApplicationTests.java
@@ -0,0 +1,51 @@
+package com.didispace;
+
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Qualifier;
+import org.springframework.boot.test.SpringApplicationConfiguration;
+import org.springframework.jdbc.core.JdbcTemplate;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+
+
+@RunWith(SpringJUnit4ClassRunner.class)
+@SpringApplicationConfiguration(Application.class)
+public class ApplicationTests {
+
+	@Autowired
+	@Qualifier("primaryJdbcTemplate")
+	protected JdbcTemplate jdbcTemplate1;
+
+	@Autowired
+	@Qualifier("secondaryJdbcTemplate")
+	protected JdbcTemplate jdbcTemplate2;
+
+	@Before
+	public void setUp() {
+		jdbcTemplate1.update("DELETE  FROM  USER ");
+		jdbcTemplate2.update("DELETE  FROM  USER ");
+	}
+
+	@Test
+	public void test() throws Exception {
+
+		// 往第一个数据源中插入两条数据
+		jdbcTemplate1.update("insert into user(id,name,age) values(?, ?, ?)", 1, "aaa", 20);
+		jdbcTemplate1.update("insert into user(id,name,age) values(?, ?, ?)", 2, "bbb", 30);
+
+		// 往第二个数据源中插入一条数据，若插入的是第一个数据源，则会主键冲突报错
+		jdbcTemplate2.update("insert into user(id,name,age) values(?, ?, ?)", 1, "aaa", 20);
+
+		// 查一下第一个数据源中是否有两条数据，验证插入是否成功
+		Assert.assertEquals("2", jdbcTemplate1.queryForObject("select count(1) from user", String.class));
+
+		// 查一下第一个数据源中是否有两条数据，验证插入是否成功
+		Assert.assertEquals("1", jdbcTemplate2.queryForObject("select count(1) from user", String.class));
+
+	}
+
+
+}