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;
}
}