初始化，未完成配置

Chapter3-2-4/src/main/java/com/didispace/Application.java

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+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);
+	}
+
+}

Chapter3-2-4/src/main/java/com/didispace/DataSourceConfig.java

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+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);
+    }
+
+}

Chapter3-2-4/src/main/resources/application.properties

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+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

Chapter3-2-4/src/test/java/com/didispace/ApplicationTests.java

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+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));
+
+	}
+
+
+}