每日筆記---使用@ConfigurationProperties讀取yml配置
參考地址 https://www.cnblogs.com/mycs-home/p/8352140.html
1.添加pom依賴
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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屬性，注意縮進
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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.新建一個類，@Component注解表明是組件，可被自動發現，@ConfigurationProperties注解之前是location屬性表明配置文件位置，prefix表示讀取的配置信息的前綴，但新版本中廢除了location屬性（網上說是1.5.2之后），故只寫前綴，默認讀取application.yml中數據。重點！！一定要在這個類中寫getter和setter，否則配置中的屬性值無法自動注入
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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{
//數據庫連接相關
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類中執行自動注入，獲取屬性
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//自動注入
@Autowired
private
User user;<br>
//方法體內獲取屬性值
String url=user.getUrl();<br>System.out.print(url);
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