springboot数据库配置类（druid）

package com.jy..config;

import com.alibaba.druid.pool.DruidDataSource;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.orm.jpa.JpaTransactionManager;
import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;
import org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter;
import org.springframework.transaction.PlatformTransactionManager;
import org.springframework.transaction.annotation.EnableTransactionManagement;

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

@Configuration
@EnableTransactionManagement
public class DataSourceConfig {

    private static final String HIBERNATE_DIALECT = "hibernate.dialect";
    private static final String HIBERNATE_SHOW_SQL = "hibernate.show.sql";
    private static final String HIBERNATE_DDL_AUTO = "hibernate.ddl-auto";

    private final static Logger log = LoggerFactory.getLogger(DataSourceConfig.class);

    @Value("${spring.datasource.driverClassName}")
    private String driver;
    @Value("${spring.datasource.url}")
    private String url;
    @Value("${spring.datasource.username}")
    private String username;
    @Value("${spring.datasource.password}")
    private String password;
    @Value("${spring.jpa.properties.hibernate.dialect}")
    private String dialect;
    @Value("${spring.jpa.hibernate.ddl-auto}")
    private String hbm2ddlAuto;
    @Value("${spring.jpa.show-sql}")
    private Boolean showSql;

    @Value("${spring.datasource.initialSize}")
    private int initialSize;
    @Value("${spring.datasource.minIdle}")
    private int minIdle;
    @Value("${spring.datasource.maxActive}")
    private int maxActive;
    @Value("${spring.datasource.maxWait}")
    private int maxWait;
    @Value("${spring.datasource.timeBetweenEvictionRunsMillis}")
    private int timeBetweenEvictionRunsMillis;
    @Value("${spring.datasource.minEvictableIdleTimeMillis}")
    private long minEvictableIdleTimeMillis;
    @Value("${spring.datasource.validationQuery}")
    private String validationQuery;
    @Value("${spring.datasource.testWhileIdle}")
    private boolean testWhileIdle;
    @Value("${spring.datasource.testOnBorrow}")
    private boolean testOnBorrow;
    @Value("${spring.datasource.testOnReturn}")
    private boolean testOnReturn;
    @Value("${spring.datasource.filters}")
    private String filters;
    @Value("${spring.datasource.connectionProperties}")
    private String connectionProperties;

    @Bean(name = "dataSource")
    public DataSource configureDataSource() {
        DruidDataSource ds = new DruidDataSource();
        ds.setUrl(url);
        ds.setUsername(username);
        ds.setPassword(password);
        ds.setInitialSize(initialSize);
        ds.setMinIdle(minIdle);
        ds.setMaxActive(maxActive);
        ds.setMaxWait(maxWait);
        ds.setTimeBetweenEvictionRunsMillis(timeBetweenEvictionRunsMillis);
        ds.setMinEvictableIdleTimeMillis(minEvictableIdleTimeMillis);
        ds.setValidationQuery(validationQuery);
        ds.setTestWhileIdle(testWhileIdle);
        ds.setTestOnBorrow(testOnBorrow);
        ds.setTestOnReturn(testOnReturn);
        ds.setPoolPreparedStatements(false);
        try {
            ds.setFilters(filters);
        }catch (SQLException e){
            log.error("datasource Initialization produce error..");
        }
        ds.setConnectionProperties("druid.stat.slowSqlMillis=3000");
        ds.setRemoveAbandoned(true);
        ds.setRemoveAbandonedTimeout(1800);
        ds.setLogAbandoned(true);
        return ds;
    }


    @Bean
    public LocalContainerEntityManagerFactoryBean entityManagerFactory() {
        LocalContainerEntityManagerFactoryBean entityManagerFactoryBean = new LocalContainerEntityManagerFactoryBean();
        entityManagerFactoryBean.setDataSource(configureDataSource());
        //实体存放的package位置
        entityManagerFactoryBean.setPackagesToScan("com.jy.entity");
        entityManagerFactoryBean.setJpaVendorAdapter(new HibernateJpaVendorAdapter());

        Properties jpaProperties = new Properties();
        jpaProperties.put(HIBERNATE_DIALECT, dialect);
        jpaProperties.put(HIBERNATE_DDL_AUTO, hbm2ddlAuto);
        jpaProperties.put(HIBERNATE_SHOW_SQL, showSql);

        jpaProperties.put("use_query_cache", "true");
        jpaProperties.put("use_second_level_cache", "false");
        jpaProperties.put("enable_lazy_load_no_trans", "true");

        entityManagerFactoryBean.setJpaProperties(jpaProperties);

        return entityManagerFactoryBean;
    }

    @Bean(name = "transactionManager")
    public PlatformTransactionManager annotationDrivenTransactionManager() {
        return new JpaTransactionManager();
    }
}