史上最全面的Spring Boot配置文件深入讲解

name=zhangsan

name: "zhangsan /n lisi"

name: ‘zhangsan /n lisi'

Map<String,String> maps;

person.maps: {key1: value1,key2: value2}

person: maps: key: value

person.maps.key=value

person: list: - 1 - 2 - 3

person: list: [1,2,3]

person.list[0]=1person.list[1]=2person.list[2]=3

@Component // 或者@Configuration@ConfigurationProperties(prefix = "person")public class Person { private Map<String,String> maps; private List<String> list; private String name; public Map<String, String> getMaps() { return maps; } public void setMaps(Map<String, String> maps) { this.maps = maps; } public List<String> getList() { return list; } public void setList(List<String> list) { this.list = list; } public String getName() { return name; } public void setName(String name) { this.name = name; }}

<!--导入配置文件处理器，配置文件进行绑定就会有提示--><dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-configuration-processor</artifactId> <optional>true</optional></dependency>

@Validated@Configuration@ConfigurationProperties(prefix = "person")public class Person { @Email private String mail; public String getMail() { return mail; } public void setMail(String mail) { this.mail = mail; }}

person.mail=yster@foxmail.com

@Configuration@ConfigurationProperties(prefix = "person")@PropertySource(value = "classpath:person.properties")public class Person { private String mail;  public String getMail() { return mail; } public void setMail(String mail) { this.mail = mail; }}

${random.value}${random.int}${random.long}${random.int(10)}${random.int[1024,65536]}

person.last-name=张三${random.uuid}person.age=${random.int}person.birth=2017/12/15person.boss=falseperson.maps.k1=v1person.maps.k2=14person.lists=a,b,cperson.dog.name=${person.hello:hello}_dogperson.dog.age=15

server: port: 8081spring: profiles: active: prod #指定使用哪个环境---server: port: 8083spring: profiles: dev #指定属于哪个环境---server: port: 8084spring: profiles: prod #指定属于哪个环境

java -jar spring-boot-02-config-0.0.1-SNAPSHOT.jar --spring.profiles.active=dev

-Dspring.profiles.active=dev

java -jar spring-boot-demo-0.0.1-SNAPSHOT.jar --spring.config.location=G:/application.properties

java -jar spring-boot-02-config-02-0.0.1-SNAPSHOT.jar --server.port=8087 --server.context-path=/abc

# Auto Configureorg.springframework.boot.autoconfigure.EnableAutoConfiguration=/org.springframework.boot.autoconfigure.admin.SpringApplicationAdminJmxAutoConfiguration,/......

@Configuration //表示这是一个配置类，以前编写的配置文件一样，也可以给容器中添加组件@EnableConfigurationProperties(HttpEncodingProperties.class) //启动指定类的ConfigurationProperties功能；将配置文件中对应的值和HttpEncodingProperties绑定起来；并把HttpEncodingProperties加入到ioc容器中@ConditionalOnWebApplication //Spring底层@Conditional注解（Spring注解版），根据不同的条件，如果满足指定的条件，整个配置类里面的配置就会生效；判断当前应用是否是web应用，如果是，当前配置类生效@ConditionalOnClass(CharacterEncodingFilter.class) //判断当前项目有没有这个类CharacterEncodingFilter；SpringMVC中进行乱码解决的过滤器；@ConditionalOnProperty(prefix = "spring.http.encoding", value = "enabled", matchIfMissing = true) //判断配置文件中是否存在某个配置 spring.http.encoding.enabled；如果不存在，判断也是成立的//即使我们配置文件中不配置pring.http.encoding.enabled=true，也是默认生效的；public class HttpEncodingAutoConfiguration {  //他已经和SpringBoot的配置文件映射了 private final HttpEncodingProperties properties;  //只有一个有参构造器的情况下，参数的值就会从容器中拿 public HttpEncodingAutoConfiguration(HttpEncodingProperties properties) { this.properties = properties; }  @Bean //给容器中添加一个组件，这个组件的某些值需要从properties中获取 @ConditionalOnMissingBean(CharacterEncodingFilter.class) //判断容器没有这个组件 public CharacterEncodingFilter characterEncodingFilter() { CharacterEncodingFilter filter = new OrderedCharacterEncodingFilter(); filter.setEncoding(this.properties.getCharset().name()); filter.setForceRequestEncoding(this.properties.shouldForce(Type.REQUEST)); filter.setForceResponseEncoding(this.properties.shouldForce(Type.RESPONSE)); return filter; }

@ConfigurationProperties(prefix = "spring.http.encoding") //从配置文件中获取指定的值和bean的属性进行绑定public class HttpEncodingProperties { public static final Charset DEFAULT_CHARSET = Charset.forName("UTF-8");

============================CONDITIONS EVALUATION REPORT============================Positive matches:（自动配置类启用的）----------------- CodecsAutoConfiguration matched: - @ConditionalOnClass found required class 'org.springframework.http.codec.CodecConfigurer'; @ConditionalOnMissingClass did not find unwanted class (OnClassCondition) CodecsAutoConfiguration.JacksonCodecConfiguration matched: - @ConditionalOnClass found required class 'com.fasterxml.jackson.databind.ObjectMapper'; @ConditionalOnMissingClass did not find unwanted class (OnClassCondition).......Negative matches:（没有启动，没有匹配成功的自动配置类）----------------- ActiveMQAutoConfiguration: Did not match:  - @ConditionalOnClass did not find required classes 'javax.jms.ConnectionFactory', 'org.apache.activemq.ActiveMQConnectionFactory' (OnClassCondition) AopAutoConfiguration: Did not match:  - @ConditionalOnClass did not find required classes 'org.aspectj.lang.annotation.Aspect', 'org.aspectj.lang.reflect.Advice', 'org.aspectj.weaver.AnnotatedElement' (OnClassCondition)