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src/main/java/top/fjy8018/jpadatasource/JpadatasourceApplication.java

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+package top.fjy8018.jpadatasource;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class JpadatasourceApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(JpadatasourceApplication.class, args);
+    }
+
+}

src/main/java/top/fjy8018/jpadatasource/config/DataAccessConfig.java

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+package top.fjy8018.jpadatasource.config;
+
+import com.zaxxer.hikari.HikariDataSource;
+import org.springframework.boot.autoconfigure.jdbc.DataSourceProperties;
+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;
+
+/**
+ * @author F嘉阳
+ * @date 2019-03-30 9:24
+ */
+@Configuration
+public class DataAccessConfig {
+    @Bean
+    @Primary
+    @ConfigurationProperties("spring.datasource.first")
+    public DataSourceProperties firstDataSourceProperties() {
+        return new DataSourceProperties();
+    }
+
+    @Bean
+    @Primary
+    @ConfigurationProperties("spring.datasource.first.configuration")
+    public HikariDataSource firstDataSource() {
+        return firstDataSourceProperties().initializeDataSourceBuilder()
+                .type(HikariDataSource.class).build();
+    }
+
+    @Bean
+    @ConfigurationProperties("spring.datasource.second")
+    public DataSourceProperties secondDataSourceProperties() {
+        return new DataSourceProperties();
+    }
+
+    @Bean
+    @ConfigurationProperties("spring.datasource.second.configuration")
+    public HikariDataSource secondDataSource() {
+        return secondDataSourceProperties().initializeDataSourceBuilder()
+                .type(HikariDataSource.class).build();
+    }
+}
+

src/main/java/top/fjy8018/jpadatasource/entity/Product.java

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+package top.fjy8018.jpadatasource.entity;
+
+import lombok.Data;
+
+import javax.persistence.Entity;
+import javax.persistence.Id;
+
+/**
+ * @author F嘉阳
+ * @date 2019-03-30 9:11
+ */
+@Data
+@Entity
+public class Product {
+
+    @Id
+    private Integer id;
+
+    private String name;
+
+    private Integer price;
+}

src/main/java/top/fjy8018/jpadatasource/repository/ProductRepository.java

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+package top.fjy8018.jpadatasource.repository;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import top.fjy8018.jpadatasource.entity.Product;
+
+/**
+ * @author F嘉阳
+ * @date 2019-03-30 9:12
+ */
+public interface ProductRepository extends JpaRepository<Product, String> {
+}

src/main/resources/application.yml

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+spring:
+  datasource:
+    first:
+      driver-class-name: com.mysql.cj.jdbc.Driver
+      username: financial_adminer
+      password: financial_adminer_pass
+      url: jdbc:mysql://120.79.226.26/jpa_test?useSSL=false&useUnicode=true&characterEncoding=UTF-8&serverTimezone=UTC
+      configuration:
+        maximum-pool-size: 30
+    second:
+      driver-class-name: com.mysql.cj.jdbc.Driver
+      username: financial_adminer
+      password: financial_adminer_pass
+      url: jdbc:mysql://120.79.226.26/jpa_test_bak?useSSL=false&useUnicode=true&characterEncoding=UTF-8&serverTimezone=UTC
+      configuration:
+        maximum-pool-size: 20
+
+  jpa:
+    hibernate:
+      ddl-auto: update
+    show-sql: true
+    database-platform: org.hibernate.dialect.MySQL55Dialect
+    properties:
+      hibernate:
+        format_sql: true
+        use_sql_comments: true

src/test/java/top/fjy8018/jpadatasource/JpadatasourceApplicationTests.java

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+package top.fjy8018.jpadatasource;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.junit4.SpringRunner;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest
+public class JpadatasourceApplicationTests {
+
+    @Test
+    public void contextLoads() {
+    }
+
+}