从spring-boot开始，已经支持yml文件形式的配置，@ConfigurationProperties的大致作用就是通过它可以把properties或者yml配置直接转成对象
@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
例如：
配置文件:
sms.url=XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
sms.appkey=XXXXXXXXXXXXXXXXXXXXXXXXXXXXX
sms.secret=XXXXXXXXXXXXXXXXXXXXXXXXXXXXX
sms.signName=XXXXXXXXXXXXXXXXXXXXXXXXXXX
sms.tplCode=XXXXXXXXXXXXXXXXXXXXXXXXXXXX
sms.type=normal
JAVA代码：
@Component
@ConfigurationProperties(prefix = "sms")
public class SmsSettings { private String url ="";
private String appkey ="";
private String secret ="";
private String signName ="";
private String tplCode ="";
private String type ="";
private String open ="";
private String tplCode2 =""; public String getUrl() {
return url;
}
public void setUrl(String url) {
this.url = url;
}
public String getAppkey() {
return appkey;
}
public void setAppkey(String appkey) {
this.appkey = appkey;
}
public String getSecret() {
return secret;
}
public void setSecret(String secret) {
this.secret = secret;
}
public String getSignName() {
return signName;
}
public void setSignName(String signName) {
this.signName = signName;
}
public String getTplCode() {
return tplCode;
}
public void setTplCode(String tplCode) {
this.tplCode = tplCode;
}
public String getType() {
return type;
}
public void setType(String type) {
this.type = type;
}
public String getOpen() {
return open;
}
public void setOpen(String open) {
this.open = open;
}
public String getTplCode2() {
return tplCode2;
}
public void setTplCode2(String tplCode2) {
this.tplCode2 = tplCode2;
} }
通过注解@ConfigurationProperties来配置redis @Configuration
@EnableAutoConfiguration
public class RedisConfig { @Bean
@ConfigurationProperties(prefix="spring.redis.poolConfig")
public JedisPoolConfig getRedisConfig(){
JedisPoolConfig config = new JedisPoolConfig();
return config;
} @Bean
@ConfigurationProperties(prefix="spring.redis")
public JedisConnectionFactory getConnectionFactory(){
JedisConnectionFactory factory = new JedisConnectionFactory();
factory.setUsePool(true);
JedisPoolConfig config = getRedisConfig();
factory.setPoolConfig(config);
return factory;
} @Bean
public RedisTemplate<?, ?> getRedisTemplate(){
RedisTemplate<?,?> template = new StringRedisTemplate(getConnectionFactory());
return template;
} }
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> |
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;
}
} |
4.Controller类中执行自动注入，获取属性
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//自动注入 @Autowiredprivate User user;<br>
//方法体内获取属性值String url=user.getUrl();<br>System.out.print(url); |
5.启动springboot入口类，调用对应controller对应的方法，控制台打印获取的值。