【springboot】自定义starter

一.自定义工程

1.pom配置

<?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">
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.5.4</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.learning</groupId>
    <artifactId>ip-spring-boot-starter</artifactId>
    <version>0.0.1-SNAPSHOT</version>


    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
    </dependencies>
</project>

2.自定义service

package com.learning.service;

import org.springframework.beans.factory.annotation.Autowired;

import javax.servlet.http.HttpServletRequest;

/**
 * @Author wangyouhui
 * @Description
 **/
public class IpService {
    // 当前的request对象的注入工作由当前starter的工程提供自动装配
    @Autowired
    private HttpServletRequest httpServerRequest;

    public void print(){
        String ip = httpServerRequest.getRemoteAddr();
        System.out.println("---------------------------------------"+ip);
    }
}

3.定义一个AutoConfiguration类

package com.learning.autoconfig;

import com.learning.service.IpService;
import org.springframework.context.annotation.Bean;

/**
 * @Author wangyouhui
 * @Description TODO
 **/
public class IpAutoConfiguration {
    @Bean
    public IpService ipCountService(){
        return new IpService();
    }
}

4.spring.factories

1.结构图

2.spring.factories文件配置

org.springframework.boot.autoconfigure.EnableAutoConfiguration=\
  com.learning.autoconfig.IpAutoConfiguration

二.使用工程

1.pom文件配置

<?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>
    <packaging>pom</packaging>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.5.4</version>
    </parent>


    <groupId>com.learning</groupId>
    <artifactId>springboot-learning</artifactId>
    <version>1.0-SNAPSHOT</version>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>
        <!--引入自定义的starter-->
        <dependency>
            <groupId>com.learning</groupId>
            <artifactId>ip-spring-boot-starter</artifactId>
            <version>0.0.1-SNAPSHOT</version>
        </dependency>
    <!--打jar包使用-->
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

2.controller测试类

package com.learning.controller;

import com.learning.service.IpService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

/**
 * @Author wangyouhui
 * @Description 测试接口
 **/
@RestController
@RequestMapping("example")
@Slf4j
public class ExampleController {

    @Autowired
    private IpService ipService;

    @GetMapping("/test")
    public String get(){
        ipService.print();
        return "test";
    }
}