springboot2.0和Druid整合配置数据源

1. idea使用spring 初始化工具初始化springboot项目(要选中web)

下一步，下一步

2. 在pom.xml中，引入Druid连接池依赖：

<dependency>
    <groupId>com.github.drtrang</groupId>
    <artifactId>druid-spring-boot2-starter</artifactId>
    <version>1.1.10</version>
</dependency>

3. 添加jdbc.properties

jdbc.driverClassName=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://127.0.0.1:3306/leyou
jdbc.username=root
jdbc.password=123

4. 新建JdbcProperties，用来进行属性注入

import org.springframework.boot.context.properties.ConfigurationProperties;

/**
 * @author john
 * @date 2019/12/4 - 19:17
 */
@ConfigurationProperties(prefix = "jdbc")
public class JdbcProperties {
    private String url;
    private String driverClassName;
    private String username;
    private String password;

    public String getUrl() {
        return url;
    }

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

    public String getDriverClassName() {
        return driverClassName;
    }

    public void setDriverClassName(String driverClassName) {
        this.driverClassName = driverClassName;
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getPassword() {
        return password;
    }

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

5. 配置数据源

创建JdbcConfiguration类：

import com.alibaba.druid.pool.DruidDataSource;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import javax.sql.DataSource;

/**
 * @author john
 * @date 2019/12/4 - 18:05
 */
@Configuration
@EnableConfigurationProperties(JdbcProperties.class)
public class JdbcConfiguration {

    @Autowired
    private JdbcProperties jdbcProperties;

    @Bean
    public DataSource dataSource() {
        DruidDataSource dataSource = new DruidDataSource();
        dataSource.setUrl(jdbcProperties.getUrl());
        dataSource.setDriverClassName(jdbcProperties.getDriverClassName());
        dataSource.setUsername(jdbcProperties.getUsername());
        dataSource.setPassword(jdbcProperties.getPassword());
        return dataSource;
    }
}

配置结束