读取Properties文件

1、目录结构

 

 

 

 

2、druid.properties文件

# 数据库访问配置
# 主数据源，默认的
spring.datasource.type=com.alibaba.druid.pool.DruidDataSource
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/test
spring.datasource.username=root
spring.datasource.password=123456

3、测试类

@Test
public void app1(){
    try(InputStream inputStream = this.getClass().getResourceAsStream("druid.properties")){
        Properties properties = new Properties();
        try {
            properties.load(inputStream);
            Iterator<String> iterator = properties.stringPropertyNames().iterator();
            while (iterator.hasNext()){
                String key = iterator.next();
                System.out.println(key);
                String value = properties.getProperty(key);
                System.out.println(value);
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }catch (Exception e){
        e.printStackTrace();
    }
}