自定义starter
starters原理、自定义starters
如何自定义starter:
1、这个场景需要使用到的依赖是什么?
2、如何编写自动配置
@Configuration //指定这个类是一个配置类
@ConditionalOnXXX //在指定条件成立的情况下自动配置类生效
@AutoConfigureAfter //指定自动配置类的顺序
@Bean //给容器中添加组件
@ConfigurationPropertie结合相关xxxProperties类来绑定相关的配置
@EnableConfigurationProperties //让xxxProperties生效并加入到容器中
自动配置类要能加载
将需要启动就加载的自动配置类,配置在META-INF/spring.factories
org.springframework.boot.autoconfigure.EnableAutoConfiguration=\
org.springframework.boot.autoconfigure.admin.SpringApplicationAdminJmxAutoConfiguration,\
org.springframework.boot.autoconfigure.aop.AopAutoConfiguration,\
3、模式:
启动器(starter)只用来做依赖导入;
专门来写一个自动配置模块;
启动器依赖自动配置;别人只需要引入启动器(starter)
mybatis-spring-boot-starter;自定义启动器名-spring-boot-starter
步骤:
- 创建启动器模块和自动配置模块
启动器模块
自动配置模块
- 配置启动器模块和自动配置模块
启动器模块
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.atguigu.starter</groupId>
<artifactId>atguigu-spring-boot-starter</artifactId>
<version>1.0-SNAPSHOT</version>
<!--启动器-->
<dependencies>
<!--引入自动配置模块-->
<dependency>
<groupId>com.atguigu.starter</groupId>
<artifactId>atguigu-spring-boot-starter-autoconfigurer</artifactId>
<version>0.0.1-SNAPSHOT</version>
</dependency>
</dependencies>
</project>
自动配置模块
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.atguigu.starter</groupId>
<artifactId>atguigu-spring-boot-starter-autoconfigurer</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>atguigu-spring-boot-starter-autoconfigurer</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.10.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<!--引入spring-boot-starter;所有starter的基本配置-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
</dependencies>
</project>
package com.atguigu.starter;
import org.springframework.boot.context.properties.ConfigurationProperties;
@ConfigurationProperties(prefix = "atguigu.hello")
public class HelloProperties {
private String prefix;
private String suffix;
public String getPrefix() {
return prefix;
}
public void setPrefix(String prefix) {
this.prefix = prefix;
}
public String getSuffix() {
return suffix;
}
public void setSuffix(String suffix) {
this.suffix = suffix;
}
}
package com.atguigu.starter;
public class HelloService {
HelloProperties helloProperties;
public HelloProperties getHelloProperties() {
return helloProperties;
}
public void setHelloProperties(HelloProperties helloProperties) {
this.helloProperties = helloProperties;
}
public String sayHellAtguigu(String name){
return helloProperties.getPrefix()+"-" +name + helloProperties.getSuffix();
}
}
package com.atguigu.starter;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.condition.ConditionalOnWebApplication;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
@Configuration
@ConditionalOnWebApplication //web应用才生效
@EnableConfigurationProperties(HelloProperties.class)
public class HelloServiceAutoConfiguration {
@Autowired
HelloProperties helloProperties;
@Bean
public HelloService helloService(){
HelloService service = new HelloService();
service.setHelloProperties(helloProperties);
return service;
}
}
classpath:META-INF/spring.factories
org.springframework.boot.autoconfigure.EnableAutoConfiguration=\
com.atguigu.starter.HelloServiceAutoConfiguration
- 使用自定义的starter
引入自定义的starter
<dependency>
<groupId>com.atguigu.starter</groupId>
<artifactId>atguigu-spring-boot-starter</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency>
application.yml
atguigu:
hello:
prefix: zhongyujieshule
suffix: zhenshaunga
KKController
@Controller
public class KKController {
@Autowired
HelloService helloService;
@ResponseBody
@GetMapping("/querykkk")
public String hh(){
return helloService.sayHello("ajksdgasjdgasgd");
}
}
标签:自定义,1x,boot,springframework,atguigu,org,public,starter
From: https://www.cnblogs.com/wzzzj/p/18039116