SpringBoot笔记

application.properties

Property形式

server.port=80 // 端口号
aruge.arugement=value

@Value("{argue.argument}")
String argu;

YAML形式

server:
    port: 80

spring:
    datasource:
        url: jdbc:mysql://localhost:3306/db_name
        username:
        password:
        driver-class-name: com.mysql.cj.Driver
    mvc:
        static-path-pattern: /static/**
    security:
        filter:
            order: -100 # Spring Security Filter 优先级
        user:
            name: 'admin'
            password: 'Abc123.'
            roles:
                - admin
                - user

Package

JAR

mvn package
java -jar yourProj.jar

WAR

1. 排除SpringBoot内嵌Tomcat

<dependency>
    <groupId>org.springframework.boot</groupId>
       <artifactId>spring-boot-starter-web</artifactId>
        <!-- 使用exclusion排除 -->
       <exclusions>
          <exclusion>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-tomcat</artifactId>
          </exclusion>
       </exclusions>
</dependency>

2. 添加Servlet依赖

<dependency>
   <groupId>jakarta.servlet</groupId>
   <artifactId>jakarta.servlet-api</artifactId>
   <scope>provided</scope>
</dependency>

3. 将打包方式修改为WAR

<packaging>war</packaging>

4. 修改主类Application

@SpringBootApplication
public class DemoApplication extends SpringBootServletInitializer {  //继承专用的初始化器
    public static void main(String[] args) {
        SpringApplication.run(DemoApplication.class, args);
    }

      //重写configure方法，完成启动类配置
    @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
        return builder.sources(DemoApplication.class);
    }
}

5. 打包

mvn package

GraalVM Native EXE

[!WARNING]
Mybatis目前不支持Native-Image

mvn -Pnative -DskipTests native:compile

SLF4J

Simple Logging Facade for Java

日志门面，如Slf4j，是把不同的日志系统的实现进行了具体的抽象化。最终日志的格式、记录级别、输出方式等都要通过接口绑定的具体的日志系统，如log4j、jul来实现。

测试-生成环境隔离

SpringBoot只会读取application.yml或application.properties，可以在文件中指定使用不同的配置

spring:
    profiles:
        active: dev

然后编写一份application-dev.yml

Maven独立打包环境配置

[!Info]
切换配置文件后，一定要刷新！

<!--分别设置开发，生产环境-->
<profiles>
    <!-- 开发环境 -->
    <profile>
        <id>dev</id>
        <activation>
            <!-- 打包 -->
            <activeByDefault>true</activeByDefault>
        </activation>
        <properties>
            <environment>dev</environment>
        </properties>
    </profile>

    <!-- 生产环境 -->
    <profile>
        <id>prod</id>
        <activation>
            <!-- 不打包 -->
            <activeByDefault>false</activeByDefault>
        </activation>
        <properties>
            <environment>prod</environment>
        </properties>
    </profile>
</profiles>
<resources>
<!--排除配置文件-->
    <resource>
        <directory>src/main/resources</directory>
        <!--先排除所有的配置文件-->
        <excludes>
            <!--使用通配符，当然可以定义多个exclude标签进行排除-->
            <exclude>application*.yml</exclude>
        </excludes>
    </resource>

    <!--根据激活条件引入打包所需的配置和文件-->
    <resource>
        <directory>src/main/resources</directory>
        <!--引入所需环境的配置文件-->
        <filtering>true</filtering>
        <includes>
            <include>application.yml</include>
            <!--根据maven选择环境导入配置文件-->
            <include>application-${environment}.yml</include>
        </includes>
    </resource>
</resources>

spring:
  profiles:
    active: '@environment@'  # 匹配maven激活的环境