最全面的SpringBoot配置文件详解

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]=1
person.list[1]=2
person.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=2017/12/15
person.boss=false
person.maps.k1=v1
person.maps.k2=14
person.lists=a,b,c
person.dog.name=${person.hello:hello}_dog
person.dog.age=15

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