spring-boot 自定义starter-526互联

步骤：

1.新建一个starter项目，该项目是一个空的项目，只需要在pom.xml中引入后面的 mail-spring-boot-autoconfigure（需要mail-spring-boot-autoconfigure项目建好并且打包到maven仓库中）

<?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>
    <version>1.0-SNAPSHOT</version>

    <groupId>com.example</groupId>
    <artifactId>mail-spring-boot-starter</artifactId>
    <name>mail-spring-boot-starter</name>


    <properties>
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>

    <dependencies>
        <dependency>
            <groupId>com.example</groupId>
            <artifactId>mail-spring-boot-autoconfigure</artifactId>
            <version>0.0.1-SNAPSHOT</version>
        </dependency>

    </dependencies>

</project>

2.新建一个**-spring-boot-autoconfiguratio 的spring-boot项目，该项目包含配置类，读取配置文件的映射类，业务类

package com.mail.starter;

import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

@Configuration
@ConditionalOnClass(MailProperties.class)
@EnableConfigurationProperties(MailProperties.class)
public class MailConfiguration {

    @Bean
   // @ConditionalOnProperty("czb.mail.enable")
    public ISendMail sendMail(MailProperties mailProperties){
        return new SendMailImpl(mailProperties);
    }
}

package com.mail.starter;

import org.springframework.boot.context.properties.ConfigurationProperties;

@ConfigurationProperties(prefix = "czb.mail")
public class MailProperties {

    /**
     * 邮件发送地址
     */
    private String address;

    /**
     * 邮件抄送地址
     */
    private String cc;

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    public String getCc() {
        return cc;
    }

    public void setCc(String cc) {
        this.cc = cc;
    }
}

发送邮件的接口和实现

package com.mail.starter;

public interface ISendMail {

    /**
     * 发送邮件
     * @param content 发送内容
     */
    public void send(String content);

}

package com.mail.starter;

public class SendMailImpl implements ISendMail{

    private MailProperties mailProperties;

    public SendMailImpl(MailProperties mailProperties){
        this.mailProperties = mailProperties;
    };

    public  SendMailImpl(){

    }

    @Override
    public void send(String content) {
        System.out.println("=============start send mail================");
        System.out.println("address:"+mailProperties.getAddress()+";cc:"+mailProperties.getCc());
        System.out.println("==============end  send mail================");
    }
}

resources新建META-INF/spring.factories

org.springframework.boot.autoconfigure.EnableAutoConfiguration=com.mail.starter.MailConfiguration

最后该项目的pom.xml配置如下

<?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>
    <version>0.0.1-SNAPSHOT</version>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.7.13</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <groupId>com.example</groupId>
    <artifactId>mail-spring-boot-autoconfigure</artifactId>
    <name>mail-spring-boot-autoconfigure</name>


    <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-autoconfigure</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-configuration-processor</artifactId>
            <optional>true</optional>
        </dependency>

    </dependencies>

    <build>
       <!-- <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>-->
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                </configuration>
            </plugin>
        </plugins>
    </build>

</project>

3.新建一个spring-boot test项目进行测试进行测试，该项目引入mail-spring-boot-starter

<?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>
    <version>0.0.1-SNAPSHOT</version>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.7.13</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.example</groupId>
    <artifactId>mail-test</artifactId>
    <name>mail-test</name>


    <properties>
        <java.version>1.8</java.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>

        <dependency>
            <groupId>com.example</groupId>
            <artifactId>mail-spring-boot-starter</artifactId>
            <version>1.0-SNAPSHOT</version>
        </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-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

application.properties 配置短信地址

#czb.mail.enable = false
czb.mail.address = 124424@qq.com
czb.mail.cc = 432424@qq.com

进行测试

package com.example.mail.test;

import com.mail.starter.ISendMail;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;

@SpringBootTest
class MailTestApplicationTests {

    @Autowired
    private ISendMail sendMail;

    @Test
    void testMail() {
        sendMail.send("this is a test mail !!!");
    }

}

打印结果：

=============start send mail================
address:124424@qq.com;cc:432424@qq.com
==============end send mail================

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