JDBC-HikariCP

一、依赖

pom.xml

<?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>yofc</groupId>
    <artifactId>jdbc</artifactId>
    <version>1.0-SNAPSHOT</version>

    <dependencies>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.15</version>
        </dependency>
        <dependency>
            <groupId>org.junit.jupiter</groupId>
            <artifactId>junit-jupiter-api</artifactId>
            <version>5.4.0</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>com.zaxxer</groupId>
            <artifactId>HikariCP</artifactId>
            <version>3.3.1</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-nop</artifactId>
            <version>1.7.26</version>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <!-- 指定jdk -->
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

二、获取连接

1.无配置文件

@Test
public void testHikariCP() throws SQLException {
    HikariConfig config = new HikariConfig();
    config.setDriverClassName("com.mysql.cj.jdbc.Driver");
    config.setJdbcUrl("jdbc:mysql://192.168.8.136:3306/jdbc");
    config.setUsername("root");
    config.setPassword("root");

    config.addDataSourceProperty("cachePrepStmts", "true");
    config.addDataSourceProperty("prepStmtCacheSize", "250");
    config.addDataSourceProperty("prepStmtCacheSqlLimit", "2048");

    // HikariDataSource 也可以配置
    DataSource ds = new HikariDataSource(config);
    ((HikariDataSource) ds).setPassword("root");

    System.out.println(ds.getConnection());

    ((HikariDataSource) ds).close();
}

2.有配置文件

hikaricp.properties

jdbcUrl=jdbc:mysql://192.168.8.136:3306/jdbc
dataSource.user=root
dataSource.password=root
dataSource.databaseName=jdbc

@Test
public void testHikariCPWithConfig() throws SQLException {
    Properties props = new Properties();
    props.setProperty("dataSourceClassName", "org.postgresql.ds.PGSimpleDataSource");
    props.setProperty("dataSource.user", "test");
    props.setProperty("dataSource.password", "test");
    props.setProperty("dataSource.databaseName", "mydb");
    props.put("dataSource.logWriter", new PrintWriter(System.out));

    // HikariConfig config = new HikariConfig(props);
    HikariConfig config = new HikariConfig(this.getClass().getClassLoader().getResource("hikaricp.properties").getPath());
    HikariDataSource ds = new HikariDataSource(config);

    System.out.println(ds.getConnection());

    ((HikariDataSource) ds).close();
}

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