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SpringBoot整合Mybatis使用Druid数据库连接池

  2021-04-03 我要评论

本文实例为大家分享了SpringBoot整合Mybatis使用Druid数据库连接池的方法,具体内容如下

在SpringBoot项目中,增加如下依赖

 <!-- spring mybatis -->
    <dependency>
      <groupId>org.mybatis.spring.boot</groupId>
      <artifactId>mybatis-spring-boot-starter</artifactId>
      <version>1.1.1</version>
    </dependency>

    <!-- mysql -->
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <scope>runtime</scope>
    </dependency>

    <!-- druid数据库连接池 -->
    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>druid</artifactId>
      <version>1.0.26</version>
    </dependency>

在resource目录下,创建jdbc.properties配置文件,加入以下配置

#数据库配置
spring.datasource.url=jdbc:mysql://127.0.0.1:3306/test?useUnicode=true&characterEncoding=utf8&useSSL=false
spring.datasource.username=admin
spring.datasource.password=admin
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
# 连接池配置
# 初始化大小,最小,最大
spring.datasource.initialSize=5 
spring.datasource.minIdle=5 
spring.datasource.maxActive=20 
# 配置获取连接等待超时的时间
spring.datasource.maxWait=60000 
# 配置间隔多久才进行一次检测,检测需要关闭的空闲连接,单位是毫秒
spring.datasource.timeBetweenEvictionRunsMillis=60000 
# 配置一个连接在池中最小生存的时间,单位是毫秒
spring.datasource.minEvictableIdleTimeMillis=300000
# 测试连接是否有效的sql
spring.datasource.validationQuery=select 'x'
# 建议配置为true,不影响性能,并且保证安全性
# 申请连接的时候检测,如果空闲时间大于timeBetweenEvictionRunsMillis,执行validationQuery检测连接是否有效
spring.datasource.testWhileIdle=true
# 申请连接时执行validationQuery检测连接是否有效
spring.datasource.testOnBorrow=false
# 归还连接时执行validationQuery检测连接是否有效
spring.datasource.testOnReturn=false
# 要启用PSCache,必须配置大于0,当大于0时,poolPreparedStatements自动触发修改为true
spring.datasource.maxPoolPreparedStatementPerConnectionSize=20
# 属性类型是字符串,通过别名的方式配置扩展插件,常用的插件有:
# 监控统计用的filter:stat
# 日志用的filter:log4j
# 防御sql注入的filter:wall
spring.datasource.filters=stat,log4j,wall

创建数据源配置类DataSourceConfig.java,代码如下

package com.liao.mybatis;

import com.alibaba.druid.pool.DruidDataSource;
import org.mybatis.spring.annotation.MapperScan;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.PropertySource;
import org.springframework.stereotype.Component;

import javax.sql.DataSource;
import java.sql.SQLException;

/**
 * 数据源
 *
 * @author hongyangliao
 * @ClassName: DataSourceConfig
 * @Date 18-1-2 下午8:56
 */
@Configuration
@MapperScan("com.liao.**.dao")
public class DataSourceConfig {
  private static final Logger logger = LoggerFactory.getLogger(DataSourceConfig.class);

  @Autowired
  private JdbcConfig jdbcConfig;

  @Bean
  @Primary //在同样的DataSource中,首先使用被标注的DataSource
  public DataSource dataSource() {
    DruidDataSource druidDataSource = new DruidDataSource();
    druidDataSource.setUrl(jdbcConfig.getUrl());
    druidDataSource.setUsername(jdbcConfig.getUserName());
    druidDataSource.setPassword(jdbcConfig.getPassword());
    druidDataSource.setInitialSize(jdbcConfig.getInitialSize());
    druidDataSource.setMinIdle(jdbcConfig.getMinIdle());
    druidDataSource.setMaxActive(jdbcConfig.getMaxActive());
    druidDataSource.setTimeBetweenEvictionRunsMillis(jdbcConfig.getTimeBetweenEvictionRunsMillis());
    druidDataSource.setMinEvictableIdleTimeMillis(jdbcConfig.getMinEvictableIdleTimeMillis());
    druidDataSource.setValidationQuery(jdbcConfig.getValidationQuery());
    druidDataSource.setTestWhileIdle(jdbcConfig.isTestWhileIdle());
    druidDataSource.setTestOnBorrow(jdbcConfig.isTestOnBorrow());
    druidDataSource.setTestOnReturn(jdbcConfig.isTestOnReturn());
    druidDataSource.setMaxPoolPreparedStatementPerConnectionSize(jdbcConfig.getMaxPoolPreparedStatementPerConnectionSize());
    try {
      druidDataSource.setFilters(jdbcConfig.getFilters());
    } catch (SQLException e) {
      if (logger.isInfoEnabled()) {
        logger.info(e.getMessage(), e);
      }
    }
    return druidDataSource;
  }


  /**
   * Jdbc配置类
   *
   * @author hongyangliao
   * @ClassName: JdbcConfig
   * @Date 18-1-2 下午9:00
   */
  @PropertySource(value = "classpath:jdbc.properties")
  @Component
  public static class JdbcConfig {
    /**
     * 数据库用户名
     */
    @Value("${spring.datasource.username}")
    private String userName;
    /**
     * 驱动名称
     */
    @Value("${spring.datasource.driver-class-name}")
    private String driverClass;
    /**
     * 数据库连接url
     */
    @Value("${spring.datasource.url}")
    private String url;
    /**
     * 数据库密码
     */
    @Value("${spring.datasource.password}")
    private String password;

    /**
     * 数据库连接池初始化大小
     */
    @Value("${spring.datasource.initialSize}")
    private int initialSize;

    /**
     * 数据库连接池最小最小连接数
     */
    @Value("${spring.datasource.minIdle}")
    private int minIdle;

    /**
     * 数据库连接池最大连接数
     */
    @Value("${spring.datasource.maxActive}")
    private int maxActive;

    /**
     * 获取连接等待超时的时间
     */
    @Value("${spring.datasource.maxWait}")
    private long maxWait;

    /**
     * 多久检测一次
     */
    @Value("${spring.datasource.timeBetweenEvictionRunsMillis}")
    private long timeBetweenEvictionRunsMillis;

    /**
     * 连接在池中最小生存的时间
     */
    @Value("${spring.datasource.minEvictableIdleTimeMillis}")
    private long minEvictableIdleTimeMillis;

    /**
     * 测试连接是否有效的sql
     */
    @Value("${spring.datasource.validationQuery}")
    private String validationQuery;

    /**
     * 申请连接的时候检测,如果空闲时间大于timeBetweenEvictionRunsMillis,检测连接是否有效
     */
    @Value("${spring.datasource.testWhileIdle}")
    private boolean testWhileIdle;

    /**
     * 申请连接时,检测连接是否有效
     */
    @Value("${spring.datasource.testOnBorrow}")
    private boolean testOnBorrow;

    /**
     * 归还连接时,检测连接是否有效
     */
    @Value("${spring.datasource.testOnReturn}")
    private boolean testOnReturn;

    /**
     * PSCache大小
     */
    @Value("${spring.datasource.maxPoolPreparedStatementPerConnectionSize}")
    private int maxPoolPreparedStatementPerConnectionSize;

    /**
     * 通过别名的方式配置扩展插件
     */
    @Value("${spring.datasource.filters}")
    private String filters;

    public String getUserName() {
      return userName;
    }

    public void setUserName(String userName) {
      this.userName = userName;
    }

    public String getDriverClass() {
      return driverClass;
    }

    public void setDriverClass(String driverClass) {
      this.driverClass = driverClass;
    }

    public String getUrl() {
      return url;
    }

    public void setUrl(String url) {
      this.url = url;
    }

    public String getPassword() {
      return password;
    }

    public void setPassword(String password) {
      this.password = password;
    }

    public int getInitialSize() {
      return initialSize;
    }

    public void setInitialSize(int initialSize) {
      this.initialSize = initialSize;
    }

    public int getMinIdle() {
      return minIdle;
    }

    public void setMinIdle(int minIdle) {
      this.minIdle = minIdle;
    }

    public int getMaxActive() {
      return maxActive;
    }

    public void setMaxActive(int maxActive) {
      this.maxActive = maxActive;
    }

    public long getMaxWait() {
      return maxWait;
    }

    public void setMaxWait(long maxWait) {
      this.maxWait = maxWait;
    }

    public long getTimeBetweenEvictionRunsMillis() {
      return timeBetweenEvictionRunsMillis;
    }

    public void setTimeBetweenEvictionRunsMillis(long timeBetweenEvictionRunsMillis) {
      this.timeBetweenEvictionRunsMillis = timeBetweenEvictionRunsMillis;
    }

    public long getMinEvictableIdleTimeMillis() {
      return minEvictableIdleTimeMillis;
    }

    public void setMinEvictableIdleTimeMillis(long minEvictableIdleTimeMillis) {
      this.minEvictableIdleTimeMillis = minEvictableIdleTimeMillis;
    }

    public String getValidationQuery() {
      return validationQuery;
    }

    public void setValidationQuery(String validationQuery) {
      this.validationQuery = validationQuery;
    }

    public boolean isTestWhileIdle() {
      return testWhileIdle;
    }

    public void setTestWhileIdle(boolean testWhileIdle) {
      this.testWhileIdle = testWhileIdle;
    }

    public boolean isTestOnBorrow() {
      return testOnBorrow;
    }

    public void setTestOnBorrow(boolean testOnBorrow) {
      this.testOnBorrow = testOnBorrow;
    }

    public boolean isTestOnReturn() {
      return testOnReturn;
    }

    public void setTestOnReturn(boolean testOnReturn) {
      this.testOnReturn = testOnReturn;
    }

    public int getMaxPoolPreparedStatementPerConnectionSize() {
      return maxPoolPreparedStatementPerConnectionSize;
    }

    public void setMaxPoolPreparedStatementPerConnectionSize(int maxPoolPreparedStatementPerConnectionSize) {
      this.maxPoolPreparedStatementPerConnectionSize = maxPoolPreparedStatementPerConnectionSize;
    }

    public String getFilters() {
      return filters;
    }

    public void setFilters(String filters) {
      this.filters = filters;
    }
  }
}

创建Session工厂配置类SessionFactoryConfig.java,代码如下

package com.liao.mybatis;

import java.io.IOException;

import javax.sql.DataSource;

import org.mybatis.spring.SqlSessionFactoryBean;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.io.ClassPathResource;
import org.springframework.transaction.annotation.EnableTransactionManagement;

@Configuration
@EnableTransactionManagement // 启注解事务管理,等同于xml配置方式的 <tx:annotation-driven />
public class SessionFactoryConfig {

 /**
  * mybatis 配置路径
  */
 private static String MYBATIS_CONFIG = "mybatis-config.xml";

 @Autowired
 private DataSource dataSource;


 /***
  * 创建sqlSessionFactoryBean
  * 并且设置configtion 如驼峰命名.等等
  * 设置mapper 映射路径
  * 设置datasource数据源
  *
  * @Title: createSqlSessionFactoryBean
  * @author: hongyangliao
  * @Date: 18-1-3 上午9:52
  * @param
  * @return org.mybatis.spring.SqlSessionFactoryBean sqlSessionFactoryBean实例
  * @throws
  */
 @Bean(name = "sqlSessionFactory")
 public SqlSessionFactoryBean createSqlSessionFactoryBean() throws IOException {
  SqlSessionFactoryBean sqlSessionFactory = new SqlSessionFactoryBean();
  // 设置mybatis configuration 扫描路径
  sqlSessionFactory.setConfigLocation(new ClassPathResource(MYBATIS_CONFIG));
  // 设置datasource
  sqlSessionFactory.setDataSource(dataSource);
  return sqlSessionFactory;
 }
}
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