每日笔记---使用@ConfigurationProperties读取yml配置
参考地址 https://www.cnblogs.com/mycs-home/p/8352140.html
1.添加pom依赖
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<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-configuration-processor</artifactId>
<optional>
true
</optional>
</dependency>
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2.application.yml文件中添加需要配置的属性，注意缩进
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Myyml:
username: cs
password:
123456
url: jdbc:mysql:
//localhost:3306/test
driver: com.mysql.jdbc.Driver
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3.新建一个类，@Component注解表明是组件，可被自动发现，@ConfigurationProperties注解之前是location属性表明配置文件位置，prefix表示读取的配置信息的前缀，但新版本中废除了location属性（网上说是1.5.2之后），故只写前缀，默认读取application.yml中数据。重点！！一定要在这个类中写getter和setter，否则配置中的属性值无法自动注入
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package
com.cs.background.util;
import
lombok.ToString;
import
org.springframework.boot.context.properties.ConfigurationProperties;
import
org.springframework.context.annotation.PropertySource;
import
org.springframework.stereotype.Component;
@Component
@ConfigurationProperties
(prefix =
"Myyml"
)
public
class
User{
//数据库连接相关
private
String url;
private
String driver;
private
String username;
private
String password;
public
String getUrl() {
return
url;
}
public
void
setUrl(String url) {
this
.url = url;
}
public
String getDriver() {
return
driver;
}
public
void
setDriver(String driver) {
this
.driver = driver;
}
public
String getUsername() {
return
username;
}
public
void
setUsername(String username) {
this
.username = username;
}
public
String getPassword() {
return
password;
}
public
void
setPassword(String password) {
this
.password = password;
}
}
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4.Controller类中执行自动注入，获取属性
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//自动注入
@Autowired
private
User user;<br>
//方法体内获取属性值
String url=user.getUrl();<br>System.out.print(url);
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