# 自定义starter
# 1、新建springboot项目
# 所需基础依赖
<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.7.13-SNAPSHOT</version> <relativePath/> <!-- lookup parent from repository --> </parent> <groupId>io.starter</groupId> <artifactId>whitelist-spring-boot-starter</artifactId> <version>0.0.1-SNAPSHOT</version> <name>whitelist-spring-boot-starter</name> <description>whitelist-spring-boot-starter</description> <packaging>jar</packaging> <properties> <java.version>1.8</java.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-configuration-processor</artifactId> <optional>true</optional> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-autoconfigure</artifactId> <version>1.5.9.RELEASE</version> </dependency> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <!-- <optional>true</optional>--> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-aop</artifactId> </dependency> <dependency> <groupId>commons-beanutils</groupId> <artifactId>commons-beanutils</artifactId> <version>1.8.3</version> </dependency> <dependency> <groupId>com.alibaba</groupId> <artifactId>fastjson</artifactId> <version>1.2.75</version> </dependency> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.12</version> <scope>test</scope> </dependency> </dependencies> <build> <finalName>whitelist-spring-boot-starter</finalName> <resources> <resource> <directory>src/main/resources</directory> <filtering>true</filtering> <includes> <include>**/**</include> </includes> </resource> </resources> <testResources> <testResource> <directory>src/test/resources</directory> <filtering>true</filtering> <includes> <include>**/**</include> </includes> </testResource> </testResources> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-surefire-plugin</artifactId> <version>2.12.4</version> <configuration> <skipTests>true</skipTests> </configuration> </plugin> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-resources-plugin</artifactId> <version>2.5</version> <configuration> <encoding>${project.build.sourceEncoding}</encoding> </configuration> </plugin> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>2.3.2</version> <configuration> <source>1.8</source> <target>1.8</target> <encoding>${project.build.sourceEncoding}</encoding> </configuration> </plugin> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-source-plugin</artifactId> <version>2.1.2</version> <executions> <execution> <id>attach-sources</id> <goals> <goal>jar</goal> </goals> </execution> </executions> </plugin> </plugins> <!-- <plugins>--> <!-- <plugin>--> <!-- <groupId>org.springframework.boot</groupId>--> <!-- <artifactId>spring-boot-maven-plugin</artifactId>--> <!-- <configuration>--> <!-- <excludes>--> <!-- <exclude>--> <!-- <groupId>org.projectlombok</groupId>--> <!-- <artifactId>lombok</artifactId>--> <!-- </exclude>--> <!-- </excludes>--> <!-- </configuration>--> <!-- </plugin>--> <!-- </plugins>--> </build> <repositories> <repository> <id>spring-milestones</id> <name>Spring Milestones</name> <url>https://repo.spring.io/milestone</url> <snapshots> <enabled>false</enabled> </snapshots> </repository> <repository> <id>spring-snapshots</id> <name>Spring Snapshots</name> <url>https://repo.spring.io/snapshot</url> <releases> <enabled>false</enabled> </releases> </repository> </repositories> <pluginRepositories> <pluginRepository> <id>spring-milestones</id> <name>Spring Milestones</name> <url>https://repo.spring.io/milestone</url> <snapshots> <enabled>false</enabled> </snapshots> </pluginRepository> <pluginRepository> <id>spring-snapshots</id> <name>Spring Snapshots</name> <url>https://repo.spring.io/snapshot</url> <releases> <enabled>false</enabled> </releases> </pluginRepository> </pluginRepositories> </project>代码已经复制到剪贴板
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# 2、修改pom文件
<dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-autoconfigure</artifactId> <version>1.5.9.RELEASE</version> </dependency> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> </dependencies>代码已经复制到剪贴板
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# 3、创建properties获取application.yml中的配置
package com.hjc.config; import org.springframework.boot.context.properties.ConfigurationProperties; @ConfigurationProperties(prefix = "helloworld") public class HelloworldProperties { public static final String DEFAULT_WORDS = "world"; private String words = DEFAULT_WORDS; public String getWords() { return words; } public void setWords(String words) { this.words = words; } }代码已经复制到剪贴板
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# 4、创建自动装配的配置类
package com.hjc.config; import com.hjc.service.HelloworldService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.boot.autoconfigure.condition.ConditionalOnClass; import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean; import org.springframework.boot.context.properties.EnableConfigurationProperties; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; // 相当于一个普通的 java 配置类 @Configuration // 当 HelloworldService 在类路径的条件下,换句话说，只有当项目中存在HelloworldService类时，这个配置才会被应用。 @ConditionalOnClass({HelloworldService.class}) // 将 application.properties 的相关的属性字段与该类一一对应，并生成 Bean @EnableConfigurationProperties(HelloworldProperties.class) public class HelloworldAutoConfiguration { // 注入属性类 @Autowired private HelloworldProperties hellowordProperties; @Bean // 当容器没有这个 Bean 的时候才创建这个 Bean @ConditionalOnMissingBean(HelloworldService.class) public HelloworldService helloworldService() { HelloworldService helloworldService = new HelloworldService(); helloworldService.setWords(hellowordProperties.getWords()); return helloworldService; } }代码已经复制到剪贴板
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# 5、创建对外使用的bean
package com.hjc.service; public class HelloworldService { private String words; private String getWords() { return words; } public void setWords(String words) { this.words = words; } public String sayHello() { return "hello, " + words; } }代码已经复制到剪贴板
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# 6、创建META-INF下的spring.factories完成自动装配
# a、目录结构
# b、spring.factories配置springboot自动装配
# Auto Configure org.springframework.boot.autoconfigure.EnableAutoConfiguration=com.hjc.config.HelloworldAutoConfiguration代码已经复制到剪贴板
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# 7、maven打包至本地仓库
← 上传maven中央仓库 白名单过滤 →
