springboot2.0入门（七）-- 自定义配置文件+xml配置文件引入

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一、加载自定义配置文件：

1、新建一个family.yam文件，将上application.yml对象复制进入family

family:
family-name:
dad:
name: levi
age: 30 #${random.int} 随机数的值是不能传递的
mom:
alias:
- yilisha
- alise
age: ${family.dad.age} #妈妈的年龄和爸爸相同，没有则默认为24岁
child:
name: happlyboy
age: 5
friends:
- {hobby: baseball,sex: male}
- {hobby: football,sex: famale}

2、自定义一个配置类：

package com.liyu.helloworld.config;import org.springframework.beans.factory.config.YamlPropertiesFactoryBean;
import org.springframework.core.env.PropertiesPropertySource;
import org.springframework.core.env.PropertySource;
import org.springframework.core.io.support.DefaultPropertySourceFactory;
import org.springframework.core.io.support.EncodedResource;import java.io.IOException;
import java.util.Properties;public class MixPropertySourceFactory extends DefaultPropertySourceFactory { public PropertySource<?> createPropertySource(String name, EncodedResource resource) throws IOException {
String sourceName = name != null ? name : resource.getResource().getFilename();
if (!resource.getResource().exists()) {
return new PropertiesPropertySource(sourceName, new Properties());
} else if (sourceName.endsWith(".yml") || sourceName.endsWith(".yaml")) {
Properties propertiesFromYaml = loadYml(resource);
return new PropertiesPropertySource(sourceName, propertiesFromYaml);
} else {
return super.createPropertySource(name, resource);
}
} private Properties loadYml(EncodedResource resource) throws IOException {
YamlPropertiesFactoryBean factory = new YamlPropertiesFactoryBean();
factory.setResources(resource.getResource());
factory.afterPropertiesSet();
return factory.getObject();
}
}

该配置了除了可以引入springboot默认的application.properties文件，还能引入自定义的yml文件

@PropertySource(value = {"classpath:family.yml"}, factory = MixPropertySourceFactory.class)
public class Family {

在family类上加入上述注解，如果是读取properties配置文件，只需要加@PropertySource(value = {"classpath:family.properties"})即可。不需要定义MixPropertySourceFactory。

application配置文件的优先级是比普通的yml配置文件优先级是要高的，相同属性的配置，只有字application中没有配置才能生效

二、老的文件配置引入(xml文件)

1、自定义一个xml配置文件

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
<bean id="testBeanService" class="com.liyu.helloworld.service.TestBeanService"></bean>
</beans>

2、在springboot启动时配置装载xml文件

@SpringBootApplication
@ImportResource(locations = {"classpath:beans.xml"})
public class Boot01HelloworldApplication { public static void main(String[] args) {
SpringApplication.run(Boot01HelloworldApplication.class, args);
}}

3、新建一个测试类：

@RunWith(SpringRunner.class)
@SpringBootTest
public class TestBean { @Autowired
private ConfigurableApplicationContext ioc; @Test
public void testHelloService() {
//测试Spring上下文环境中是否有testBeanService这样一个bean，有的话表示xml配置文件生效
boolean testBeanService= ioc.containsBean("testBeanService");
System.out.println(testBeanService);
}
}

4、运行结果：