SpringBoot 使用Hikaricp连接池

 1.添加pom.xml依赖

如果是SpringBoot2.0,那么默认的连接池就是Hikaricp，不需要配置

其他的，如果继承

        org.springframework.boot
        spring-boot-starter-parent

直接添加Hikaricp包就可以

            com.zaxxer
            HikariCP
            3.1.0

反之使用jdbc包的要去除掉tomcat的连接配置

        
            org.springframework.boot
            spring-boot-starter-jdbc
            
                
                    org.apache.tomcat
                    tomcat-jdbc
                
            
        
        
        
            com.zaxxer
            HikariCP
            
         

2.添加配置：

spring.datasource.url=jdbc:mysql://127.0.0.1:3306/test1?useUnicode=true&characterEncoding=UTF-8&zeroDateTimeBehavior=convertToNull
spring.datasource.username=root
spring.datasource.password=hongda$123456
spring.datasource.driverClassName=com.mysql.jdbc.Driver

spring.datasource.max-idle=10
spring.datasource.max-active=15
spring.datasource.max-lifetime=86430000
spring.datasource.log-abandoned=true
spring.datasource.remove-abandoned=true
spring.datasource.remove-abandoned-timeout=60
spring.datasource.initialize=false
spring.datasource.sqlScriptEncoding=UTF-8

DataSourceConfig:

import com.zaxxer.hikari.HikariConfig;
import com.zaxxer.hikari.HikariDataSource;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import javax.sql.DataSource;


/**
 * HikariCP连接池配置
 */
@Configuration
public class DataSourceConfig {

    @Value("${spring.datasource.url}")
    private String dataSourceUrl;

    @Value("${spring.datasource.username}")
    private String user;

    @Value("${spring.datasource.password}")
    private String password;

    @Bean
    public DataSource dataSource() {
        HikariConfig config = new HikariConfig();
        config.setJdbcUrl(dataSourceUrl); //数据源
        config.setUsername(user); //用户名
        config.setPassword(password); //密码
        config.addDataSourceProperty("cachePrepStmts", "true"); //是否自定义配置，为true时下面两个参数才生效
        config.addDataSourceProperty("prepStmtCacheSize", "250"); //连接池大小默认25，官方推荐250-500
        config.addDataSourceProperty("prepStmtCacheSqlLimit", "2048"); //单条语句最大长度默认256，官方推荐2048
        config.addDataSourceProperty("useServerPrepStmts", "true"); //新版本MySQL支持服务器端准备，开启能够得到显著性能提升
        config.addDataSourceProperty("useLocalSessionState", "true");
        config.addDataSourceProperty("useLocalTransactionState", "true");
        config.addDataSourceProperty("rewriteBatchedStatements", "true");
        config.addDataSourceProperty("cacheResultSetMetadata", "true");
        config.addDataSourceProperty("cacheServerConfiguration", "true");
        config.addDataSourceProperty("elideSetAutoCommits", "true");
        config.addDataSourceProperty("maintainTimeStats", "false");

        HikariDataSource ds = new HikariDataSource(config);
        return ds;
    }
}

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