“Spring Boot-HelloWorld”的版本间的差异

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第82行： 第82行：
 
}
 
}
  
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</syntaxhighlight>测试URL：http://localhost:8080/hello
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=== Application.yml ===
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==== 修改 tomcat 监听端口 ====
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<syntaxhighlight lang="yaml">
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server:
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  port: 8888
 
</syntaxhighlight>
 
</syntaxhighlight>
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==== 官方文档配置属性说明 ====
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https://docs.spring.io/spring-boot/docs/2.7.8/reference/html/application-properties.html#appendix.application-properties
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=== 创建可执行文件 ===
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https://docs.spring.io/spring-boot/docs/2.7.8/reference/html/getting-started.html#getting-started.first-application.executable-jar
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==== 在 pom.xml 中引入插件 ====
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<syntaxhighlight lang="xml">
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    <build>
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        <plugins>
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            <plugin>
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                <groupId>org.springframework.boot</groupId>
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                <artifactId>spring-boot-maven-plugin</artifactId>
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            </plugin>
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        </plugins>
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    </build>
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</syntaxhighlight>
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==== 清理、打包 ====
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[[文件:IDEA 中调用 Maven 的生命周期阶段1.png|无|缩略图]]
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在 target 目录下得到可执行文件 boot-01-helloworld-1.0-SNAPSHOT.jar
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==== 在命令行中独立运行 ====
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<syntaxhighlight lang="powershell">
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E:\record\2023\1\28\boot-01-helloworld\target>java -jar boot-01-helloworld-1.0-SNAPSHOT.jar
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  .  ____          _            __ _ _
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/\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
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( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
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\\/  ___)| |_)| | | | | || (_| |  ) ) ) )
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  '  |____| .__|_| |_|_| |_\__, | / / / /
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=========|_|==============|___/=/_/_/_/
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:: Spring Boot ::        (v2.3.4.RELEASE)
 +
 +
2023-02-01 14:35:45.878  INFO 7620 --- [          main] io.github.jihch.boot.MainApplication    : Starting MainApplication v1.0-SNAPSHOT on SK-20210414CLPG with PID 7620 (E:\record\2023\1\28\boot-01-helloworld\target\boot-01-helloworld-1.0-SNAPSHOT.jar started by Administrator in E:\record\2023\1\28\boot-01-helloworld\target)
 +
2023-02-01 14:35:45.880  INFO 7620 --- [          main] io.github.jihch.boot.MainApplication    : No active profile set, falling back to default profiles: default
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2023-02-01 14:35:47.311  INFO 7620 --- [          main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 8888 (http)
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2023-02-01 14:35:47.324  INFO 7620 --- [          main] o.apache.catalina.core.StandardService  : Starting service [Tomcat]
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2023-02-01 14:35:47.325  INFO 7620 --- [          main] org.apache.catalina.core.StandardEngine  : Starting Servlet engine: [Apache Tomcat/9.0.38]
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2023-02-01 14:35:47.395  INFO 7620 --- [          main] o.a.c.c.C.[Tomcat].[localhost].[/]      : Initializing Spring embedded WebApplicationContext
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2023-02-01 14:35:47.395  INFO 7620 --- [          main] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 1446 ms
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2023-02-01 14:35:47.542  INFO 7620 --- [          main] o.s.s.concurrent.ThreadPoolTaskExecutor  : Initializing ExecutorService 'applicationTaskExecutor'
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2023-02-01 14:35:47.719  INFO 7620 --- [          main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat started on port(s): 8888 (http) with context path ''
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2023-02-01 14:35:47.728  INFO 7620 --- [          main] io.github.jihch.boot.MainApplication    : Started MainApplication in 2.511 seconds (JVM running for 3.704)
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</syntaxhighlight>
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=== 注意事项 ===
 +
windows 中，在命令行中运行可执行文件时，如果遇到鼠标点击就会暂停运行的情况，可能是因为启用了“快速编辑模式”
 +
[[文件:Windows 命令行快速编辑模式.png|无|缩略图|591x591像素]]
 +
取消掉勾选就可以了

2023年2月1日 (三) 06:46的最新版本

Spring Boot 2 入门

系统要求

Java 8 & 兼容 java 14

Maven 3.3+

idea 2019.12

maven 设置

<mirrors>
    <mirror>
        <id>nexus-aliyun</id>
        <mirrorOf>central</mirrorOf>
        <name>Nexus aliyun</name>
        <url>http://maven.aliyun.com/nexus/content/groups/public</url>
    </mirror>
</mirrors>

<profiles>
    <profile>
        <id>jdk-1.8</id>
        <activation>
            <activeByDefault>true</activeByDefault>
            <jdk>1.8</jdk>
        </activation>
        <properties>
            <maven.compiler.source>1.8</maven.compiler.source>
            <maven.compiler.target>1.8</maven.compiler.target>
            <maven.compiler.compilerVersion>1.8</maven.compiler.compilerVersion>
        </properties>
    </profile>
</profiles>

https://www.bilibili.com/video/BV19K4y1L7MT?p=5



Java代码

MainApplication.java

package io.github.jihch.boot;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;


/**
 * 主程序类
 * @SpringBootApplication：这是一个 Spring Boot 应用
 */
@SpringBootApplication
public class MainApplication {

    public static void main(String[] args) {
        SpringApplication.run(MainApplication.class, args);
    }

}


HelloController.java

package io.github.jihch.boot.controller;

import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class HelloController {

    @RequestMapping("/hello")
    public String handle01() {
        return "Hello, Spring Boot 2！";
    }

}

测试URL：http://localhost:8080/hello



Application.yml

修改 tomcat 监听端口

server:
  port: 8888


官方文档配置属性说明

https://docs.spring.io/spring-boot/docs/2.7.8/reference/html/application-properties.html#appendix.application-properties



创建可执行文件

https://docs.spring.io/spring-boot/docs/2.7.8/reference/html/getting-started.html#getting-started.first-application.executable-jar

在 pom.xml 中引入插件

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


清理、打包

生成缩略图出错：无法将缩略图保存到目标地点

在 target 目录下得到可执行文件 boot-01-helloworld-1.0-SNAPSHOT.jar



在命令行中独立运行

E:\record\2023\1\28\boot-01-helloworld\target>java -jar boot-01-helloworld-1.0-SNAPSHOT.jar

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::        (v2.3.4.RELEASE)

2023-02-01 14:35:45.878  INFO 7620 --- [           main] io.github.jihch.boot.MainApplication     : Starting MainApplication v1.0-SNAPSHOT on SK-20210414CLPG with PID 7620 (E:\record\2023\1\28\boot-01-helloworld\target\boot-01-helloworld-1.0-SNAPSHOT.jar started by Administrator in E:\record\2023\1\28\boot-01-helloworld\target)
2023-02-01 14:35:45.880  INFO 7620 --- [           main] io.github.jihch.boot.MainApplication     : No active profile set, falling back to default profiles: default
2023-02-01 14:35:47.311  INFO 7620 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 8888 (http)
2023-02-01 14:35:47.324  INFO 7620 --- [           main] o.apache.catalina.core.StandardService   : Starting service [Tomcat]
2023-02-01 14:35:47.325  INFO 7620 --- [           main] org.apache.catalina.core.StandardEngine  : Starting Servlet engine: [Apache Tomcat/9.0.38]
2023-02-01 14:35:47.395  INFO 7620 --- [           main] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
2023-02-01 14:35:47.395  INFO 7620 --- [           main] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 1446 ms
2023-02-01 14:35:47.542  INFO 7620 --- [           main] o.s.s.concurrent.ThreadPoolTaskExecutor  : Initializing ExecutorService 'applicationTaskExecutor'
2023-02-01 14:35:47.719  INFO 7620 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat started on port(s): 8888 (http) with context path ''
2023-02-01 14:35:47.728  INFO 7620 --- [           main] io.github.jihch.boot.MainApplication     : Started MainApplication in 2.511 seconds (JVM running for 3.704)



注意事项

windows 中，在命令行中运行可执行文件时，如果遇到鼠标点击就会暂停运行的情况，可能是因为启用了“快速编辑模式”

Windows 命令行快速编辑模式.png

取消掉勾选就可以了

取自“https://www.jihongchang.top/index.php?title=Spring_Boot-HelloWorld&oldid=4753”