为什么招聘网站做不大,电商项目策划书,手机营销推广方案,网站设计教科书1.概要
1.1 需求#xff0c;自己写一个redis-spring-boot-starter模拟自动配置
自动配置就是在引入*-starter坐标后#xff0c;可以已经spring框架的规则实现一些Bean的自动注入#xff0c;并设置一些参数的默认值#xff0c;且也可以在引入的工程中修改这些配置的值。这…1.概要
1.1 需求自己写一个redis-spring-boot-starter模拟自动配置
自动配置就是在引入*-starter坐标后可以已经spring框架的规则实现一些Bean的自动注入并设置一些参数的默认值且也可以在引入的工程中修改这些配置的值。这里依据这个原理模拟一下。
1.2 要点
Configuration EnableConfigurationProperties(RedisProperties.class) public class RedisAutoConfigration { Bean public Jedis jedis(RedisProperties edisProperties){ return new Jedis(edisProperties.getHost(),edisProperties.getPort());ConfigurationProperties public class RedisProperties {groupIdredis.clients/groupId artifactIdjedis/artifactIdartifactIdredis-spring-boot-autoconfigure/artifactId version0.0.1-SNAPSHOT/versiongroupIdcom.xjc.springcloundtest/groupId artifactIdredis-spring-boot-starter/artifactIdJedis jedis context.getBean(Jedis.class); System.out.println(jedis);
1.3 关键词
ConfigurationEnableConfigurationProperties(RedisProperties.class)BeanConfigurationPropertiescontext.getBean(Jedis.class);SpringBootApplicationConfigurableApplicationContext context SpringApplication.run(Main.class);
2.代码
2.1 父工程
?xml version1.0 encodingUTF-8?
project xmlnshttp://maven.apache.org/POM/4.0.0 xmlns:xsihttp://www.w3.org/2001/XMLSchema-instancexsi:schemaLocationhttp://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsdmodelVersion4.0.0/modelVersionparentgroupIdorg.springframework.boot/groupIdartifactIdspring-boot-starter-parent/artifactIdversion3.2.2/versionrelativePath/ !-- lookup parent from repository --/parentgroupIdcom.xjc.springcloundtest/groupIdartifactIddemo23/artifactIdversion0.0.1-SNAPSHOT/versionpackagingpom/packagingnamedemo23/namedescriptiondemo23/descriptionmodulesmoduleredis-spring-boot-starter/modulemoduleredis-spring-boot-autoconfigure/modulemoduleuntitled/modulemoduleuntitled1/module/modulespropertiesjava.version17/java.version/propertiesdependenciesdependencygroupIdorg.springframework.boot/groupIdartifactIdspring-boot-starter/artifactId/dependencydependencygroupIdorg.springframework.boot/groupIdartifactIdspring-boot-starter-test/artifactIdscopetest/scope/dependency
!-- lt;!ndash; https://mvnrepository.com/artifact/org.mybatis.spring.boot/mybatis-spring-boot-starter ndash;gt;dependencygroupIdorg.mybatis.spring.boot/groupIdartifactIdmybatis-spring-boot-starter/artifactIdversion1.3.2/version/dependency--/dependenciesbuildpluginsplugingroupIdorg.springframework.boot/groupIdartifactIdspring-boot-maven-plugin/artifactId/plugin/plugins/build/project2.2 启动工程 redis-spring-boot-starter
2.2.1 工程文件
?xml version1.0 encodingUTF-8?
project xmlnshttp://maven.apache.org/POM/4.0.0xmlns:xsihttp://www.w3.org/2001/XMLSchema-instancexsi:schemaLocationhttp://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsdmodelVersion4.0.0/modelVersionparentgroupIdcom.xjc.springcloundtest/groupIdartifactIddemo23/artifactIdversion0.0.1-SNAPSHOT/version/parentartifactIdredis-spring-boot-starter/artifactIdpropertiesmaven.compiler.source21/maven.compiler.sourcemaven.compiler.target21/maven.compiler.targetproject.build.sourceEncodingUTF-8/project.build.sourceEncoding/propertiesdependenciesdependencygroupIdcom.xjc.springcloundtest/groupIdartifactIdredis-spring-boot-autoconfigure/artifactIdversion0.0.1-SNAPSHOT/version/dependency/dependencies/project
2.3 自动配置工程 redis-spring-boot-autoconfigure
2.3.1 工程文件
?xml version1.0 encodingUTF-8?
project xmlnshttp://maven.apache.org/POM/4.0.0xmlns:xsihttp://www.w3.org/2001/XMLSchema-instancexsi:schemaLocationhttp://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsdmodelVersion4.0.0/modelVersionparentgroupIdcom.xjc.springcloundtest/groupIdartifactIddemo23/artifactIdversion0.0.1-SNAPSHOT/version/parentartifactIdredis-spring-boot-autoconfigure/artifactIdpropertiesmaven.compiler.source21/maven.compiler.sourcemaven.compiler.target21/maven.compiler.targetproject.build.sourceEncodingUTF-8/project.build.sourceEncoding/propertiesdependenciesdependencygroupIdredis.clients/groupIdartifactIdjedis/artifactId/dependency/dependencies/project
2.3.2 配置类
package com.xjc.springcloundtest;import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import redis.clients.jedis.Jedis;Configuration
EnableConfigurationProperties(RedisProperties.class)
public class RedisAutoConfigration {Beanpublic Jedis jedis(RedisProperties edisProperties){return new Jedis(edisProperties.getHost(),edisProperties.getPort());}
}2.3.3 配置数据类
package com.xjc.springcloundtest;import org.springframework.boot.context.properties.ConfigurationProperties;ConfigurationProperties
public class RedisProperties {public int getPort() {return port;}public void setPort(int port) {this.port port;}public String getHost() {return host;}public void setHost(String host) {this.host host;}private String hostlocalhost;private int port6379;}2.4 使用自定义自动配置工程进行测试
2.4.1 工程文件
?xml version1.0 encodingUTF-8?
project xmlnshttp://maven.apache.org/POM/4.0.0xmlns:xsihttp://www.w3.org/2001/XMLSchema-instancexsi:schemaLocationhttp://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsdmodelVersion4.0.0/modelVersionparentgroupIdcom.xjc.springcloundtest/groupIdartifactIddemo23/artifactIdversion0.0.1-SNAPSHOT/version/parentartifactIduntitled/artifactIdpropertiesmaven.compiler.source21/maven.compiler.sourcemaven.compiler.target21/maven.compiler.targetproject.build.sourceEncodingUTF-8/project.build.sourceEncoding/propertiesdependenciesdependencygroupIdorg.springframework.boot/groupIdartifactIdspring-boot-starter-web/artifactId/dependencydependencygroupIdcom.xjc.springcloundtest/groupIdartifactIdredis-spring-boot-starter/artifactIdversion0.0.1-SNAPSHOT/version/dependency/dependencies/project
2.4.2 主函数
package com.xjc.springcloundtest;import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.ConfigurableApplicationContext;
import redis.clients.jedis.Jedis;SpringBootApplication
public class Main {public static void main(String[] args) {ConfigurableApplicationContext context SpringApplication.run(Main.class);System.out.println(Hello world!);Jedis jedis context.getBean(Jedis.class);System.out.println(jedis);}
}
2.4.3 测试结果
C:\Users\ThinkPad\.jdks\openjdk-21.0.2\bin\java.exe -XX:TieredStopAtLevel1 -Dspring.output.ansi.enabledalways -Dcom.sun.management.jmxremote -Dspring.jmx.enabledtrue -Dspring.liveBeansView.mbeanDomain -Dspring.application.admin.enabledtrue -Dmanagement.endpoints.jmx.exposure.include* -javaagent:D:\Program Files\JetBrains\IntelliJ IDEA 2023.3.2\lib\idea_rt.jar61994:D:\Program Files\JetBrains\IntelliJ IDEA 2023.3.2\bin -Dfile.encodingUTF-8 -Dsun.stdout.encodingUTF-8 -Dsun.stderr.encodingUTF-8 -classpath C:\Users\ThinkPad\IdeaProjects\demo23\untitled\target\classes;C:\Users\ThinkPad\.m2\repository\org\springframework\boot\spring-boot-starter-web\3.2.2\spring-boot-starter-web-3.2.2.jar;C:\Users\ThinkPad\.m2\repository\org\springframework\boot\spring-boot-starter-json\3.2.2\spring-boot-starter-json-3.2.2.jar;C:\Users\ThinkPad\.m2\repository\com\fasterxml\jackson\core\jackson-databind\2.15.3\jackson-databind-2.15.3.jar;C:\Users\ThinkPad\.m2\repository\com\fasterxml\jackson\core\jackson-annotations\2.15.3\jackson-annotations-2.15.3.jar;C:\Users\ThinkPad\.m2\repository\com\fasterxml\jackson\core\jackson-core\2.15.3\jackson-core-2.15.3.jar;C:\Users\ThinkPad\.m2\repository\com\fasterxml\jackson\datatype\jackson-datatype-jdk8\2.15.3\jackson-datatype-jdk8-2.15.3.jar;C:\Users\ThinkPad\.m2\repository\com\fasterxml\jackson\datatype\jackson-datatype-jsr310\2.15.3\jackson-datatype-jsr310-2.15.3.jar;C:\Users\ThinkPad\.m2\repository\com\fasterxml\jackson\module\jackson-module-parameter-names\2.15.3\jackson-module-parameter-names-2.15.3.jar;C:\Users\ThinkPad\.m2\repository\org\springframework\boot\spring-boot-starter-tomcat\3.2.2\spring-boot-starter-tomcat-3.2.2.jar;C:\Users\ThinkPad\.m2\repository\org\apache\tomcat\embed\tomcat-embed-core\10.1.18\tomcat-embed-core-10.1.18.jar;C:\Users\ThinkPad\.m2\repository\org\apache\tomcat\embed\tomcat-embed-el\10.1.18\tomcat-embed-el-10.1.18.jar;C:\Users\ThinkPad\.m2\repository\org\apache\tomcat\embed\tomcat-embed-websocket\10.1.18\tomcat-embed-websocket-10.1.18.jar;C:\Users\ThinkPad\.m2\repository\org\springframework\spring-web\6.1.3\spring-web-6.1.3.jar;C:\Users\ThinkPad\.m2\repository\org\springframework\spring-beans\6.1.3\spring-beans-6.1.3.jar;C:\Users\ThinkPad\.m2\repository\io\micrometer\micrometer-observation\1.12.2\micrometer-observation-1.12.2.jar;C:\Users\ThinkPad\.m2\repository\io\micrometer\micrometer-commons\1.12.2\micrometer-commons-1.12.2.jar;C:\Users\ThinkPad\.m2\repository\org\springframework\spring-webmvc\6.1.3\spring-webmvc-6.1.3.jar;C:\Users\ThinkPad\.m2\repository\org\springframework\spring-aop\6.1.3\spring-aop-6.1.3.jar;C:\Users\ThinkPad\.m2\repository\org\springframework\spring-context\6.1.3\spring-context-6.1.3.jar;C:\Users\ThinkPad\.m2\repository\org\springframework\spring-expression\6.1.3\spring-expression-6.1.3.jar;C:\Users\ThinkPad\IdeaProjects\demo23\redis-spring-boot-starter\target\classes;C:\Users\ThinkPad\IdeaProjects\demo23\redis-spring-boot-autoconfigure\target\classes;C:\Users\ThinkPad\.m2\repository\redis\clients\jedis\5.0.2\jedis-5.0.2.jar;C:\Users\ThinkPad\.m2\repository\org\apache\commons\commons-pool2\2.12.0\commons-pool2-2.12.0.jar;C:\Users\ThinkPad\.m2\repository\org\json\json\20231013\json-20231013.jar;C:\Users\ThinkPad\.m2\repository\com\google\code\gson\gson\2.10.1\gson-2.10.1.jar;C:\Users\ThinkPad\.m2\repository\org\springframework\boot\spring-boot-starter\3.2.2\spring-boot-starter-3.2.2.jar;C:\Users\ThinkPad\.m2\repository\org\springframework\boot\spring-boot\3.2.2\spring-boot-3.2.2.jar;C:\Users\ThinkPad\.m2\repository\org\springframework\boot\spring-boot-autoconfigure\3.2.2\spring-boot-autoconfigure-3.2.2.jar;C:\Users\ThinkPad\.m2\repository\org\springframework\boot\spring-boot-starter-logging\3.2.2\spring-boot-starter-logging-3.2.2.jar;C:\Users\ThinkPad\.m2\repository\ch\qos\logback\logback-classic\1.4.14\logback-classic-1.4.14.jar;C:\Users\ThinkPad\.m2\repository\ch\qos\logback\logback-core\1.4.14\logback-core-1.4.14.jar;C:\Users\ThinkPad\.m2\repository\org\apache\logging\log4j\log4j-to-slf4j\2.21.1\log4j-to-slf4j-2.21.1.jar;C:\Users\ThinkPad\.m2\repository\org\apache\logging\log4j\log4j-api\2.21.1\log4j-api-2.21.1.jar;C:\Users\ThinkPad\.m2\repository\org\slf4j\jul-to-slf4j\2.0.11\jul-to-slf4j-2.0.11.jar;C:\Users\ThinkPad\.m2\repository\jakarta\annotation\jakarta.annotation-api\2.1.1\jakarta.annotation-api-2.1.1.jar;C:\Users\ThinkPad\.m2\repository\org\springframework\spring-core\6.1.3\spring-core-6.1.3.jar;C:\Users\ThinkPad\.m2\repository\org\springframework\spring-jcl\6.1.3\spring-jcl-6.1.3.jar;C:\Users\ThinkPad\.m2\repository\org\yaml\snakeyaml\2.2\snakeyaml-2.2.jar;C:\Users\ThinkPad\.m2\repository\org\slf4j\slf4j-api\2.0.11\slf4j-api-2.0.11.jar com.xjc.springcloundtest.Main. ____ _ __ _ _/\\ / ____ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | _ | _| | _ \/ _ | \ \ \ \\\/ ___)| |_)| | | | | || (_| | ) ) ) ) |____| .__|_| |_|_| |_\__, | / / / /|_||___//_/_/_/:: Spring Boot :: (v3.2.2)2024-02-02T16:04:44.40608:00 INFO 22288 --- [ main] com.xjc.springcloundtest.Main : Starting Main using Java 21.0.2 with PID 22288 (C:\Users\ThinkPad\IdeaProjects\demo23\untitled\target\classes started by ThinkPad in C:\Users\ThinkPad\IdeaProjects\demo23)
2024-02-02T16:04:44.41008:00 INFO 22288 --- [ main] com.xjc.springcloundtest.Main : No active profile set, falling back to 1 default profile: default
2024-02-02T16:04:45.38808:00 INFO 22288 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port 8080 (http)
2024-02-02T16:04:45.40008:00 INFO 22288 --- [ main] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2024-02-02T16:04:45.40008:00 INFO 22288 --- [ main] o.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/10.1.18]
2024-02-02T16:04:45.45208:00 INFO 22288 --- [ main] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2024-02-02T16:04:45.45308:00 INFO 22288 --- [ main] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 978 ms
2024-02-02T16:04:45.96308:00 INFO 22288 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat started on port 8080 (http) with context path
2024-02-02T16:04:45.97008:00 INFO 22288 --- [ main] com.xjc.springcloundtest.Main : Started Main in 2.054 seconds (process running for 2.705)
Hello world!
Jedis{Connection{DefaultJedisSocketFactory{localhost:6379}}}3 补充实验
3.1 概要
实验条件加载的效果给对象加一个软件如果用户已经创建了这个对象就不再创建了。
3.2 代码
3.2 添加条件
3.2.1 配置文件变更 ConditionalOnMissingBean(name jedis)
Configuration
EnableConfigurationProperties(RedisProperties.class)
public class RedisAutoConfigration {BeanConditionalOnMissingBean(name jedis)public Jedis jedis(RedisProperties edisProperties){System.out.println(自动配置Jedis);return new Jedis(edisProperties.getHost(),edisProperties.getPort());}
}
3.2.1 测试函数变更 添加Jedis 对象的Bean
SpringBootApplication
public class Main {public static void main(String[] args) {ConfigurableApplicationContext context SpringApplication.run(Main.class);System.out.println(Hello world!);//Jedis jedis context.getBean(Jedis.class);Object o context.getBean(jedis);System.out.println(o);}Beanpublic Jedis jedis2(){return new Jedis(localhost,6379);}
}
3.3 测试结果
C:\Users\ThinkPad\.jdks\openjdk-21.0.2\bin\java.exe -XX:TieredStopAtLevel1 -Dspring.output.ansi.enabledalways -Dcom.sun.management.jmxremote -Dspring.jmx.enabledtrue -Dspring.liveBeansView.mbeanDomain -Dspring.application.admin.enabledtrue -Dmanagement.endpoints.jmx.exposure.include* -javaagent:D:\Program Files\JetBrains\IntelliJ IDEA 2023.3.2\lib\idea_rt.jar63505:D:\Program Files\JetBrains\IntelliJ IDEA 2023.3.2\bin -Dfile.encodingUTF-8 -Dsun.stdout.encodingUTF-8 -Dsun.stderr.encodingUTF-8 -classpath C:\Users\ThinkPad\IdeaProjects\demo23\untitled\target\classes;C:\Users\ThinkPad\.m2\repository\org\springframework\boot\spring-boot-starter-web\3.2.2\spring-boot-starter-web-3.2.2.jar;C:\Users\ThinkPad\.m2\repository\org\springframework\boot\spring-boot-starter-json\3.2.2\spring-boot-starter-json-3.2.2.jar;C:\Users\ThinkPad\.m2\repository\com\fasterxml\jackson\core\jackson-databind\2.15.3\jackson-databind-2.15.3.jar;C:\Users\ThinkPad\.m2\repository\com\fasterxml\jackson\core\jackson-annotations\2.15.3\jackson-annotations-2.15.3.jar;C:\Users\ThinkPad\.m2\repository\com\fasterxml\jackson\core\jackson-core\2.15.3\jackson-core-2.15.3.jar;C:\Users\ThinkPad\.m2\repository\com\fasterxml\jackson\datatype\jackson-datatype-jdk8\2.15.3\jackson-datatype-jdk8-2.15.3.jar;C:\Users\ThinkPad\.m2\repository\com\fasterxml\jackson\datatype\jackson-datatype-jsr310\2.15.3\jackson-datatype-jsr310-2.15.3.jar;C:\Users\ThinkPad\.m2\repository\com\fasterxml\jackson\module\jackson-module-parameter-names\2.15.3\jackson-module-parameter-names-2.15.3.jar;C:\Users\ThinkPad\.m2\repository\org\springframework\boot\spring-boot-starter-tomcat\3.2.2\spring-boot-starter-tomcat-3.2.2.jar;C:\Users\ThinkPad\.m2\repository\org\apache\tomcat\embed\tomcat-embed-core\10.1.18\tomcat-embed-core-10.1.18.jar;C:\Users\ThinkPad\.m2\repository\org\apache\tomcat\embed\tomcat-embed-el\10.1.18\tomcat-embed-el-10.1.18.jar;C:\Users\ThinkPad\.m2\repository\org\apache\tomcat\embed\tomcat-embed-websocket\10.1.18\tomcat-embed-websocket-10.1.18.jar;C:\Users\ThinkPad\.m2\repository\org\springframework\spring-web\6.1.3\spring-web-6.1.3.jar;C:\Users\ThinkPad\.m2\repository\org\springframework\spring-beans\6.1.3\spring-beans-6.1.3.jar;C:\Users\ThinkPad\.m2\repository\io\micrometer\micrometer-observation\1.12.2\micrometer-observation-1.12.2.jar;C:\Users\ThinkPad\.m2\repository\io\micrometer\micrometer-commons\1.12.2\micrometer-commons-1.12.2.jar;C:\Users\ThinkPad\.m2\repository\org\springframework\spring-webmvc\6.1.3\spring-webmvc-6.1.3.jar;C:\Users\ThinkPad\.m2\repository\org\springframework\spring-aop\6.1.3\spring-aop-6.1.3.jar;C:\Users\ThinkPad\.m2\repository\org\springframework\spring-context\6.1.3\spring-context-6.1.3.jar;C:\Users\ThinkPad\.m2\repository\org\springframework\spring-expression\6.1.3\spring-expression-6.1.3.jar;C:\Users\ThinkPad\IdeaProjects\demo23\redis-spring-boot-starter\target\classes;C:\Users\ThinkPad\IdeaProjects\demo23\redis-spring-boot-autoconfigure\target\classes;C:\Users\ThinkPad\.m2\repository\redis\clients\jedis\5.0.2\jedis-5.0.2.jar;C:\Users\ThinkPad\.m2\repository\org\apache\commons\commons-pool2\2.12.0\commons-pool2-2.12.0.jar;C:\Users\ThinkPad\.m2\repository\org\json\json\20231013\json-20231013.jar;C:\Users\ThinkPad\.m2\repository\com\google\code\gson\gson\2.10.1\gson-2.10.1.jar;C:\Users\ThinkPad\.m2\repository\org\springframework\boot\spring-boot-starter\3.2.2\spring-boot-starter-3.2.2.jar;C:\Users\ThinkPad\.m2\repository\org\springframework\boot\spring-boot\3.2.2\spring-boot-3.2.2.jar;C:\Users\ThinkPad\.m2\repository\org\springframework\boot\spring-boot-autoconfigure\3.2.2\spring-boot-autoconfigure-3.2.2.jar;C:\Users\ThinkPad\.m2\repository\org\springframework\boot\spring-boot-starter-logging\3.2.2\spring-boot-starter-logging-3.2.2.jar;C:\Users\ThinkPad\.m2\repository\ch\qos\logback\logback-classic\1.4.14\logback-classic-1.4.14.jar;C:\Users\ThinkPad\.m2\repository\ch\qos\logback\logback-core\1.4.14\logback-core-1.4.14.jar;C:\Users\ThinkPad\.m2\repository\org\apache\logging\log4j\log4j-to-slf4j\2.21.1\log4j-to-slf4j-2.21.1.jar;C:\Users\ThinkPad\.m2\repository\org\apache\logging\log4j\log4j-api\2.21.1\log4j-api-2.21.1.jar;C:\Users\ThinkPad\.m2\repository\org\slf4j\jul-to-slf4j\2.0.11\jul-to-slf4j-2.0.11.jar;C:\Users\ThinkPad\.m2\repository\jakarta\annotation\jakarta.annotation-api\2.1.1\jakarta.annotation-api-2.1.1.jar;C:\Users\ThinkPad\.m2\repository\org\springframework\spring-core\6.1.3\spring-core-6.1.3.jar;C:\Users\ThinkPad\.m2\repository\org\springframework\spring-jcl\6.1.3\spring-jcl-6.1.3.jar;C:\Users\ThinkPad\.m2\repository\org\yaml\snakeyaml\2.2\snakeyaml-2.2.jar;C:\Users\ThinkPad\.m2\repository\org\slf4j\slf4j-api\2.0.11\slf4j-api-2.0.11.jar com.xjc.springcloundtest.Main. ____ _ __ _ _/\\ / ____ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | _ | _| | _ \/ _ | \ \ \ \\\/ ___)| |_)| | | | | || (_| | ) ) ) ) |____| .__|_| |_|_| |_\__, | / / / /|_||___//_/_/_/:: Spring Boot :: (v3.2.2)2024-02-02T16:59:08.92508:00 INFO 42840 --- [ main] com.xjc.springcloundtest.Main : Starting Main using Java 21.0.2 with PID 42840 (C:\Users\ThinkPad\IdeaProjects\demo23\untitled\target\classes started by ThinkPad in C:\Users\ThinkPad\IdeaProjects\demo23)
2024-02-02T16:59:08.92908:00 INFO 42840 --- [ main] com.xjc.springcloundtest.Main : No active profile set, falling back to 1 default profile: default
2024-02-02T16:59:09.78008:00 INFO 42840 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port 8080 (http)
2024-02-02T16:59:09.79008:00 INFO 42840 --- [ main] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2024-02-02T16:59:09.79008:00 INFO 42840 --- [ main] o.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/10.1.18]
2024-02-02T16:59:09.83308:00 INFO 42840 --- [ main] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2024-02-02T16:59:09.83408:00 INFO 42840 --- [ main] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 843 ms
自动配置Jedis
2024-02-02T16:59:10.28108:00 INFO 42840 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat started on port 8080 (http) with context path
2024-02-02T16:59:10.28708:00 INFO 42840 --- [ main] com.xjc.springcloundtest.Main : Started Main in 1.831 seconds (process running for 2.547)
Hello world!
Jedis{Connection{DefaultJedisSocketFactory{localhost:6379}}}Process finished with exit code 1303.4 让两处的名称相同
3.4.1 代码
//自动配置处
BeanConditionalOnMissingBean(name jedis)public Jedis jedis(RedisProperties edisProperties){System.out.println(自动配置Jedis);return new Jedis(edisProperties.getHost(),edisProperties.getPort());}
//主动配置出
Beanpublic Jedis jedis(){return new Jedis(localhost,6379);}
3.4.2 测结果 还没有到加载bena的时候就报错了
C:\Users\ThinkPad\.jdks\openjdk-21.0.2\bin\java.exe -XX:TieredStopAtLevel1 -Dspring.output.ansi.enabledalways -Dcom.sun.management.jmxremote -Dspring.jmx.enabledtrue -Dspring.liveBeansView.mbeanDomain -Dspring.application.admin.enabledtrue -Dmanagement.endpoints.jmx.exposure.include* -javaagent:D:\Program Files\JetBrains\IntelliJ IDEA 2023.3.2\lib\idea_rt.jar65274:D:\Program Files\JetBrains\IntelliJ IDEA 2023.3.2\bin -Dfile.encodingUTF-8 -Dsun.stdout.encodingUTF-8 -Dsun.stderr.encodingUTF-8 -classpath C:\Users\ThinkPad\IdeaProjects\demo23\untitled\target\classes;C:\Users\ThinkPad\.m2\repository\org\springframework\boot\spring-boot-starter-web\3.2.2\spring-boot-starter-web-3.2.2.jar;C:\Users\ThinkPad\.m2\repository\org\springframework\boot\spring-boot-starter-json\3.2.2\spring-boot-starter-json-3.2.2.jar;C:\Users\ThinkPad\.m2\repository\com\fasterxml\jackson\core\jackson-databind\2.15.3\jackson-databind-2.15.3.jar;C:\Users\ThinkPad\.m2\repository\com\fasterxml\jackson\core\jackson-annotations\2.15.3\jackson-annotations-2.15.3.jar;C:\Users\ThinkPad\.m2\repository\com\fasterxml\jackson\core\jackson-core\2.15.3\jackson-core-2.15.3.jar;C:\Users\ThinkPad\.m2\repository\com\fasterxml\jackson\datatype\jackson-datatype-jdk8\2.15.3\jackson-datatype-jdk8-2.15.3.jar;C:\Users\ThinkPad\.m2\repository\com\fasterxml\jackson\datatype\jackson-datatype-jsr310\2.15.3\jackson-datatype-jsr310-2.15.3.jar;C:\Users\ThinkPad\.m2\repository\com\fasterxml\jackson\module\jackson-module-parameter-names\2.15.3\jackson-module-parameter-names-2.15.3.jar;C:\Users\ThinkPad\.m2\repository\org\springframework\boot\spring-boot-starter-tomcat\3.2.2\spring-boot-starter-tomcat-3.2.2.jar;C:\Users\ThinkPad\.m2\repository\org\apache\tomcat\embed\tomcat-embed-core\10.1.18\tomcat-embed-core-10.1.18.jar;C:\Users\ThinkPad\.m2\repository\org\apache\tomcat\embed\tomcat-embed-el\10.1.18\tomcat-embed-el-10.1.18.jar;C:\Users\ThinkPad\.m2\repository\org\apache\tomcat\embed\tomcat-embed-websocket\10.1.18\tomcat-embed-websocket-10.1.18.jar;C:\Users\ThinkPad\.m2\repository\org\springframework\spring-web\6.1.3\spring-web-6.1.3.jar;C:\Users\ThinkPad\.m2\repository\org\springframework\spring-beans\6.1.3\spring-beans-6.1.3.jar;C:\Users\ThinkPad\.m2\repository\io\micrometer\micrometer-observation\1.12.2\micrometer-observation-1.12.2.jar;C:\Users\ThinkPad\.m2\repository\io\micrometer\micrometer-commons\1.12.2\micrometer-commons-1.12.2.jar;C:\Users\ThinkPad\.m2\repository\org\springframework\spring-webmvc\6.1.3\spring-webmvc-6.1.3.jar;C:\Users\ThinkPad\.m2\repository\org\springframework\spring-aop\6.1.3\spring-aop-6.1.3.jar;C:\Users\ThinkPad\.m2\repository\org\springframework\spring-context\6.1.3\spring-context-6.1.3.jar;C:\Users\ThinkPad\.m2\repository\org\springframework\spring-expression\6.1.3\spring-expression-6.1.3.jar;C:\Users\ThinkPad\IdeaProjects\demo23\redis-spring-boot-starter\target\classes;C:\Users\ThinkPad\IdeaProjects\demo23\redis-spring-boot-autoconfigure\target\classes;C:\Users\ThinkPad\.m2\repository\redis\clients\jedis\5.0.2\jedis-5.0.2.jar;C:\Users\ThinkPad\.m2\repository\org\apache\commons\commons-pool2\2.12.0\commons-pool2-2.12.0.jar;C:\Users\ThinkPad\.m2\repository\org\json\json\20231013\json-20231013.jar;C:\Users\ThinkPad\.m2\repository\com\google\code\gson\gson\2.10.1\gson-2.10.1.jar;C:\Users\ThinkPad\.m2\repository\org\springframework\boot\spring-boot-starter\3.2.2\spring-boot-starter-3.2.2.jar;C:\Users\ThinkPad\.m2\repository\org\springframework\boot\spring-boot\3.2.2\spring-boot-3.2.2.jar;C:\Users\ThinkPad\.m2\repository\org\springframework\boot\spring-boot-autoconfigure\3.2.2\spring-boot-autoconfigure-3.2.2.jar;C:\Users\ThinkPad\.m2\repository\org\springframework\boot\spring-boot-starter-logging\3.2.2\spring-boot-starter-logging-3.2.2.jar;C:\Users\ThinkPad\.m2\repository\ch\qos\logback\logback-classic\1.4.14\logback-classic-1.4.14.jar;C:\Users\ThinkPad\.m2\repository\ch\qos\logback\logback-core\1.4.14\logback-core-1.4.14.jar;C:\Users\ThinkPad\.m2\repository\org\apache\logging\log4j\log4j-to-slf4j\2.21.1\log4j-to-slf4j-2.21.1.jar;C:\Users\ThinkPad\.m2\repository\org\apache\logging\log4j\log4j-api\2.21.1\log4j-api-2.21.1.jar;C:\Users\ThinkPad\.m2\repository\org\slf4j\jul-to-slf4j\2.0.11\jul-to-slf4j-2.0.11.jar;C:\Users\ThinkPad\.m2\repository\jakarta\annotation\jakarta.annotation-api\2.1.1\jakarta.annotation-api-2.1.1.jar;C:\Users\ThinkPad\.m2\repository\org\springframework\spring-core\6.1.3\spring-core-6.1.3.jar;C:\Users\ThinkPad\.m2\repository\org\springframework\spring-jcl\6.1.3\spring-jcl-6.1.3.jar;C:\Users\ThinkPad\.m2\repository\org\yaml\snakeyaml\2.2\snakeyaml-2.2.jar;C:\Users\ThinkPad\.m2\repository\org\slf4j\slf4j-api\2.0.11\slf4j-api-2.0.11.jar com.xjc.springcloundtest.Main. ____ _ __ _ _/\\ / ____ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | _ | _| | _ \/ _ | \ \ \ \\\/ ___)| |_)| | | | | || (_| | ) ) ) ) |____| .__|_| |_|_| |_\__, | / / / /|_||___//_/_/_/:: Spring Boot :: (v3.2.2)2024-02-02T18:39:34.39408:00 INFO 42764 --- [ main] com.xjc.springcloundtest.Main : Starting Main using Java 21.0.2 with PID 42764 (C:\Users\ThinkPad\IdeaProjects\demo23\untitled\target\classes started by ThinkPad in C:\Users\ThinkPad\IdeaProjects\demo23)
2024-02-02T18:39:34.39608:00 INFO 42764 --- [ main] com.xjc.springcloundtest.Main : No active profile set, falling back to 1 default profile: default
2024-02-02T18:39:34.72908:00 WARN 42764 --- [ main] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.support.BeanDefinitionOverrideException: Invalid bean definition with name jedis defined in com.xjc.springcloundtest.Main: Cannot register bean definition [Root bean: class [null]; scope; abstractfalse; lazyInitnull; autowireMode3; dependencyCheck0; autowireCandidatetrue; primaryfalse; factoryBeanNamemain; factoryMethodNamejedis; initMethodNamesnull; destroyMethodNames[(inferred)]; defined in com.xjc.springcloundtest.Main] for bean jedis since there is already [Root bean: class [null]; scope; abstractfalse; lazyInitnull; autowireMode3; dependencyCheck0; autowireCandidatetrue; primaryfalse; factoryBeanNameredisAutoConfigration; factoryMethodNamejedis; initMethodNamesnull; destroyMethodNames[(inferred)]; defined in class path resource [com/xjc/springcloundtest/RedisAutoConfigration.class]] bound.
2024-02-02T18:39:34.73508:00 INFO 42764 --- [ main] .s.b.a.l.ConditionEvaluationReportLogger : Error starting ApplicationContext. To display the condition evaluation report re-run your application with debug enabled.
2024-02-02T18:39:34.75408:00 ERROR 42764 --- [ main] o.s.b.d.LoggingFailureAnalysisReporter : ***************************
APPLICATION FAILED TO START
***************************Description:The bean jedis, defined in com.xjc.springcloundtest.Main, could not be registered. A bean with that name has already been defined in class path resource [com/xjc/springcloundtest/RedisAutoConfigration.class] and overriding is disabled.Action:Consider renaming one of the beans or enabling overriding by setting spring.main.allow-bean-definition-overridingtrueProcess finished with exit code 13.4.3 添加配置
spring:main:allow-bean-definition-overriding: true
C:\Users\ThinkPad\.jdks\openjdk-21.0.2\bin\java.exe -XX:TieredStopAtLevel1 -Dspring.output.ansi.enabledalways -Dcom.sun.management.jmxremote -Dspring.jmx.enabledtrue -Dspring.liveBeansView.mbeanDomain -Dspring.application.admin.enabledtrue -Dmanagement.endpoints.jmx.exposure.include* -javaagent:D:\Program Files\JetBrains\IntelliJ IDEA 2023.3.2\lib\idea_rt.jar65297:D:\Program Files\JetBrains\IntelliJ IDEA 2023.3.2\bin -Dfile.encodingUTF-8 -Dsun.stdout.encodingUTF-8 -Dsun.stderr.encodingUTF-8 -classpath C:\Users\ThinkPad\IdeaProjects\demo23\untitled\target\classes;C:\Users\ThinkPad\.m2\repository\org\springframework\boot\spring-boot-starter-web\3.2.2\spring-boot-starter-web-3.2.2.jar;C:\Users\ThinkPad\.m2\repository\org\springframework\boot\spring-boot-starter-json\3.2.2\spring-boot-starter-json-3.2.2.jar;C:\Users\ThinkPad\.m2\repository\com\fasterxml\jackson\core\jackson-databind\2.15.3\jackson-databind-2.15.3.jar;C:\Users\ThinkPad\.m2\repository\com\fasterxml\jackson\core\jackson-annotations\2.15.3\jackson-annotations-2.15.3.jar;C:\Users\ThinkPad\.m2\repository\com\fasterxml\jackson\core\jackson-core\2.15.3\jackson-core-2.15.3.jar;C:\Users\ThinkPad\.m2\repository\com\fasterxml\jackson\datatype\jackson-datatype-jdk8\2.15.3\jackson-datatype-jdk8-2.15.3.jar;C:\Users\ThinkPad\.m2\repository\com\fasterxml\jackson\datatype\jackson-datatype-jsr310\2.15.3\jackson-datatype-jsr310-2.15.3.jar;C:\Users\ThinkPad\.m2\repository\com\fasterxml\jackson\module\jackson-module-parameter-names\2.15.3\jackson-module-parameter-names-2.15.3.jar;C:\Users\ThinkPad\.m2\repository\org\springframework\boot\spring-boot-starter-tomcat\3.2.2\spring-boot-starter-tomcat-3.2.2.jar;C:\Users\ThinkPad\.m2\repository\org\apache\tomcat\embed\tomcat-embed-core\10.1.18\tomcat-embed-core-10.1.18.jar;C:\Users\ThinkPad\.m2\repository\org\apache\tomcat\embed\tomcat-embed-el\10.1.18\tomcat-embed-el-10.1.18.jar;C:\Users\ThinkPad\.m2\repository\org\apache\tomcat\embed\tomcat-embed-websocket\10.1.18\tomcat-embed-websocket-10.1.18.jar;C:\Users\ThinkPad\.m2\repository\org\springframework\spring-web\6.1.3\spring-web-6.1.3.jar;C:\Users\ThinkPad\.m2\repository\org\springframework\spring-beans\6.1.3\spring-beans-6.1.3.jar;C:\Users\ThinkPad\.m2\repository\io\micrometer\micrometer-observation\1.12.2\micrometer-observation-1.12.2.jar;C:\Users\ThinkPad\.m2\repository\io\micrometer\micrometer-commons\1.12.2\micrometer-commons-1.12.2.jar;C:\Users\ThinkPad\.m2\repository\org\springframework\spring-webmvc\6.1.3\spring-webmvc-6.1.3.jar;C:\Users\ThinkPad\.m2\repository\org\springframework\spring-aop\6.1.3\spring-aop-6.1.3.jar;C:\Users\ThinkPad\.m2\repository\org\springframework\spring-context\6.1.3\spring-context-6.1.3.jar;C:\Users\ThinkPad\.m2\repository\org\springframework\spring-expression\6.1.3\spring-expression-6.1.3.jar;C:\Users\ThinkPad\IdeaProjects\demo23\redis-spring-boot-starter\target\classes;C:\Users\ThinkPad\IdeaProjects\demo23\redis-spring-boot-autoconfigure\target\classes;C:\Users\ThinkPad\.m2\repository\redis\clients\jedis\5.0.2\jedis-5.0.2.jar;C:\Users\ThinkPad\.m2\repository\org\apache\commons\commons-pool2\2.12.0\commons-pool2-2.12.0.jar;C:\Users\ThinkPad\.m2\repository\org\json\json\20231013\json-20231013.jar;C:\Users\ThinkPad\.m2\repository\com\google\code\gson\gson\2.10.1\gson-2.10.1.jar;C:\Users\ThinkPad\.m2\repository\org\springframework\boot\spring-boot-starter\3.2.2\spring-boot-starter-3.2.2.jar;C:\Users\ThinkPad\.m2\repository\org\springframework\boot\spring-boot\3.2.2\spring-boot-3.2.2.jar;C:\Users\ThinkPad\.m2\repository\org\springframework\boot\spring-boot-autoconfigure\3.2.2\spring-boot-autoconfigure-3.2.2.jar;C:\Users\ThinkPad\.m2\repository\org\springframework\boot\spring-boot-starter-logging\3.2.2\spring-boot-starter-logging-3.2.2.jar;C:\Users\ThinkPad\.m2\repository\ch\qos\logback\logback-classic\1.4.14\logback-classic-1.4.14.jar;C:\Users\ThinkPad\.m2\repository\ch\qos\logback\logback-core\1.4.14\logback-core-1.4.14.jar;C:\Users\ThinkPad\.m2\repository\org\apache\logging\log4j\log4j-to-slf4j\2.21.1\log4j-to-slf4j-2.21.1.jar;C:\Users\ThinkPad\.m2\repository\org\apache\logging\log4j\log4j-api\2.21.1\log4j-api-2.21.1.jar;C:\Users\ThinkPad\.m2\repository\org\slf4j\jul-to-slf4j\2.0.11\jul-to-slf4j-2.0.11.jar;C:\Users\ThinkPad\.m2\repository\jakarta\annotation\jakarta.annotation-api\2.1.1\jakarta.annotation-api-2.1.1.jar;C:\Users\ThinkPad\.m2\repository\org\springframework\spring-core\6.1.3\spring-core-6.1.3.jar;C:\Users\ThinkPad\.m2\repository\org\springframework\spring-jcl\6.1.3\spring-jcl-6.1.3.jar;C:\Users\ThinkPad\.m2\repository\org\yaml\snakeyaml\2.2\snakeyaml-2.2.jar;C:\Users\ThinkPad\.m2\repository\org\slf4j\slf4j-api\2.0.11\slf4j-api-2.0.11.jar com.xjc.springcloundtest.Main. ____ _ __ _ _/\\ / ____ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | _ | _| | _ \/ _ | \ \ \ \\\/ ___)| |_)| | | | | || (_| | ) ) ) ) |____| .__|_| |_|_| |_\__, | / / / /|_||___//_/_/_/:: Spring Boot :: (v3.2.2)2024-02-02T18:41:04.83308:00 INFO 40908 --- [ main] com.xjc.springcloundtest.Main : Starting Main using Java 21.0.2 with PID 40908 (C:\Users\ThinkPad\IdeaProjects\demo23\untitled\target\classes started by ThinkPad in C:\Users\ThinkPad\IdeaProjects\demo23)
2024-02-02T18:41:04.83508:00 INFO 40908 --- [ main] com.xjc.springcloundtest.Main : No active profile set, falling back to 1 default profile: default
2024-02-02T18:41:05.63608:00 INFO 40908 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port 8080 (http)
2024-02-02T18:41:05.64808:00 INFO 40908 --- [ main] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2024-02-02T18:41:05.64808:00 INFO 40908 --- [ main] o.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/10.1.18]
2024-02-02T18:41:05.69608:00 INFO 40908 --- [ main] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2024-02-02T18:41:05.69608:00 INFO 40908 --- [ main] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 805 ms
2024-02-02T18:41:06.11908:00 INFO 40908 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat started on port 8080 (http) with context path
2024-02-02T18:41:06.12408:00 INFO 40908 --- [ main] com.xjc.springcloundtest.Main : Started Main in 1.856 seconds (process running for 2.624)
Hello world!
Jedis{Connection{DefaultJedisSocketFactory{localhost:6379}}}这时候才达到对比的效果
BeanConditionalOnMissingBean(name jedis)public Jedis jedis(RedisProperties edisProperties){System.out.println(自动配置Jedis);return new Jedis(edisProperties.getHost(),edisProperties.getPort());}
