本篇文章为大家展示了SpringBoot 中怎么自定义starter,内容简明扼要并且容易理解,绝对能使你眼前一亮,通过这篇文章的详细介绍希望你能有所收获。
1 先创建一个空项目(自己起名字)
2 在1步骤中创建的空项目中创建两个模块,创建方式如下图所示
1)创建启动器模块用maven项目我的启动器名称为 mao-spring-boot-starter
pom.xml如下所示 <?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.mao.starter</groupId> <artifactId>mao-spring-boot-starter</artifactId> <version>1.0-SNAPSHOT</version> <!-- 启动器--> <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> <!-- 引入自动配置模块--> <dependency> <groupId>com.mao-starter</groupId> <artifactId>mao-spring-boot-starter-autoconfigurer</artifactId> <version>0.0.1-SNAPSHOT</version> </dependency> </dependencies>
</project>
2) 创建自动配置模块,我创建的名字为:mao-spring-boot-starter-autoconfigurer如下图所示 ![](https://oscimg.oschina.net/oscnet/b7c0a779402394cb5783f3f2eae7a5ce0bc.jpg) pom.xml如下所示 <?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> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.5.21.RELEASE</version> <relativePath/> <!-- lookup parent from repository --> </parent> <groupId>com.mao-starter</groupId> <artifactId>mao-spring-boot-starter-autoconfigurer</artifactId> <version>0.0.1-SNAPSHOT</version> <name>mao-spring-boot-starter-autoconfigurer</name> <description>Demo project for Spring Boot</description> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> <java.version>1.8</java.version> </properties>
<!-- 所有要引入的基本配置-->
<dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter</artifactId> </dependency> </dependencies>
</project>
3 创建如下图的3个类
helloProperties.java //属性类
package com.maostarter.mao;
import org.springframework.boot.context.properties.ConfigurationProperties;
@ConfigurationProperties(prefix = "map.hello")
public class helloProperties {
public String prefix; 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; } private String suffix;
}
HelloService.java //向外提供服务的类
public class HelloService {
helloProperties helloPropertie; public helloProperties getHelloPropertie() { return helloPropertie; } public void setHelloPropertie(helloProperties helloPropertie) { this.helloPropertie = helloPropertie; } public String sayHelloMao(String name){ return helloPropertie.getPrefix()+'*'+name+helloPropertie.getSuffix(); }
}
helloServiceAutoConfiguration.java //服务自动注入类
@Configuration
@ConditionalOnWebApplication //web应用才生效
@EnableConfigurationProperties(helloProperties.class)
public class helloServiceAutoConfiguration {
@Autowired helloProperties helloPropertie; @Bean public HelloService helloService(){ HelloService service = new HelloService(); service.setHelloPropertie(helloPropertie); return service; }
}
4 配置spring.factories文件,如下图创建方式
spring.factories
org.springframework.boot.autoconfigure.EnableAutoConfiguration=\
com.maostarter.mao.helloServiceAutoConfiguration
5 如何生成starter,在这个过程有肯能出现各个问题,一般是jdk版本不对,maven版本问题,出现问题首先仔细阅读控制台的信息
不要一出现问题就百度
6 测试刚刚创建的自定义starter创建个springBoot项目
pom.xml如下所示
<?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> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.1.6.RELEASE</version> <relativePath/> <!-- lookup parent from repository --> </parent> <groupId>com.autostart.test</groupId> <artifactId>autostart</artifactId> <version>0.0.1-SNAPSHOT</version> <name>autostart</name> <description>Demo project for Spring Boot</description> <properties> <java.version>1.8</java.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>com.mao.starter</groupId> <artifactId>mao-spring-boot-starter</artifactId> <version>1.0-SNAPSHOT</version> </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>
6 给之前配置的属性文件复制 如下图所示
7 创建一个测试用例
@Controller
public class HelloController {
@Autowired HelloService helloService; @ResponseBody @RequestMapping("/hello") public String Hello(){ return helloService.sayHelloMao("haha"); }
}
8 测试结果如下图所示
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