Use annotations to read the data in the configuration file and mapped to the entity class or property

Use annotations to read the data in the configuration file and mapped to the entity class or property

Mapped to the property above

Step a: Add the following comments on the Controller layer

@PropertySource("classpath:application.properties")//加载配置文件

Step two: Add the following comments on the Controller layer

@Value("${Web.file.path}") //通过注解，读取配置文件中的数据，并映射到类的属性上面

Step three: add the following code in application.properties

Web.file.path=F:\\

Mapped to the entity class

Step 1: Add the following annotation layer Utils

@PropertySource("classpath:application.properties")//加载配置文件
//用于读取配置文件中的指定的键值对(key-value)映射到java实体类，注意前缀要小写，不能有下划线
@ConfigurationProperties(prefix = "server")

Step two: add the following code on the property

@Value the same content of the prefix and a step of

  @Value("${server.name}")
    private String name;
    @Value("${server.ip}")
    private String ip;

Step three: add the following code in application.properties

#读取配置文件键值对(key-val)映射到 实体类 serverUtils
server.name=centos7
server.ip=192.168.1.17