官方文档指南启动成功

.gitignore

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+HELP.md
+/target/
+!.mvn/wrapper/maven-wrapper.jar
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+/build/
+
+### VS Code ###
+.vscode/

pom.xml

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+<?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>
+    <parent>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>2.1.3.RELEASE</version>
+        <relativePath/> <!-- lookup parent from repository -->
+    </parent>
+    <groupId>top.fjy8018</groupId>
+    <artifactId>jpadatasource</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
+    <name>jpadatasource</name>
+    <description>Demo project for Spring Boot</description>
+
+    <properties>
+        <java.version>1.8</java.version>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-data-jpa</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>mysql</groupId>
+            <artifactId>mysql-connector-java</artifactId>
+            <scope>runtime</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+            </plugin>
+        </plugins>
+    </build>
+
+</project>

sql.sql

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+DROP DATABASE IF EXISTS jpa_test;
+CREATE DATABASE jpa_test
+  DEFAULT CHARACTER SET utf8mb4
+  COLLATE utf8mb4_general_ci;
+GRANT ALL ON jpa_test.* TO financial_adminer@'%'
+  IDENTIFIED BY 'financial_adminer_pass';
+
+DROP DATABASE IF EXISTS jpa_test_bak;
+CREATE DATABASE jpa_test_bak
+  DEFAULT CHARACTER SET utf8mb4
+  COLLATE utf8mb4_general_ci;
+GRANT ALL ON jpa_test_bak.* TO financial_adminer@'%'
+  IDENTIFIED BY 'financial_adminer_pass';

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() {
+    }
+
+}