使用springboot配置和注入数据源属性的方法和步骤

/**

1、书写一个名为resources/application.properties的属性文件---->书写一个配置属性类，类名为：

**/

文件：application.properties

jdbc.driverClassName=com.mysql.jdbc.Driverjdbc.url=jdbc:mysql://192.168.28.128jdbc.username=orcljdbc.password=123456

文件：JdbcProperties

package com.hope.config;

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

/** * @author newcityman * 使用lombok插件 * @date 2019/12/16 - 0:59 */@ConfigurationProperties(prefix = "jdbc")@Datapublic class JdbcProperties {    String driverClassName;    String url;    String username;    String password;}

package com.hope.config;

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

import javax.sql.DataSource;

/** * @author newcityman * @Bean 把类的返回值注入到spring核心容器便于调用 * @date 2019/12/15 - 23:52 */@Configuration/*@PropertySource("classpath:application.properties")*/@EnableConfigurationProperties(JdbcProperties.class)public class JdbcConfig {    @Bean    public DataSource dataSource(JdbcProperties jp){        DruidDataSource dataSource = new DruidDataSource();        dataSource.setDriverClassName(jp.getDriverClassName());        dataSource.setUrl(jp.getUrl());        dataSource.setUsername(jp.getUsername());        dataSource.setPassword(jp.getPassword());        return dataSource;    }}

package com.hope;

import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;import org.springframework.web.bind.annotation.RestController;

/** * @author newcityman * @date 2019/12/15 - 23:09 */@SpringBootApplicationpublic class BootDemoApplication {    public static void main(String[] args) {        SpringApplication.run(BootDemoApplication.class,args);    }}

package com.hope.web;

import org.springframework.beans.factory.annotation.Autowired;import org.springframework.web.bind.annotation.GetMapping;import org.springframework.web.bind.annotation.ResponseBody;import org.springframework.web.bind.annotation.RestController;

import javax.sql.DataSource;

/** * @author newcityman * @date 2019/12/15 - 23:28 */@RestControllerpublic class HelloController {    @Autowired    private DataSource dataSource;

    @GetMapping("hello")    @ResponseBody    public String Hello(){        return "hello zmy，你好";    }}

原文地址：https://www.cnblogs.com/newcityboy/p/12049026.html