SpringBoot-Properties配置文件属性注入-1

SpringBoot-Properties配置文件属性注入-1

标签（空格分隔）： java，SpringBoot

1.创建配置文件[application.properties]

2.创建JdbcProperties类

package com.itheima.config;

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

@ConfigurationProperties(prefix = "jdbc")
@Data
public class JdbcProperties {

private String driverClassName;

private String url;

private String username;

private String password;
}

3.创建JdbcConfig类

package com.itheima.config;

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;

@Configuration
@EnableConfigurationProperties(JdbcProperties.class)
public class JdbcConfig1 {

// 也可以构造注入
@Autowired
private JdbcProperties jdbcProperties;

public JdbcConfig1(JdbcProperties jdbcProperties) {
this.jdbcProperties = jdbcProperties;
}

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

4.Debug运行测试