@[toc]
根据官网 quickstart提示生成示例项目
找到 src/main/java/com/pxample/pemo/PemoApplication.java 查看
package com.pxample.pemo;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class PemoApplication {
public static void main(String[] args) {
SpringApplication.run(PemoApplication.class, args);
}
}修改 src/main/java/com/pxample/pemo/PemoApplication.java 文件
package com.pxample.pemo;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
@SpringBootApplication
@RestController
public class PemoApplication {
public static void main(String[] args) {
SpringApplication.run(PemoApplication.class, args);
}
@GetMapping("")
public String pemodefault(@RequestParam(value = "customdefaultstr", defaultValue = "PefaultPage") String customdefaultstr) {
return String.format("This is %s~", customdefaultstr);
}
@GetMapping("/pemohello")
public String pemohello(@RequestParam(value = "name", defaultValue = "PemoWorld") String name) {
return String.format("Hello %s~", name);
}
}在 src/main/resources/创建三个文件
application-dev.properties
server.port=8090
application-staging.properties
server.port=8091
application-production.properties
server.port=8092
路径为 : src/main/resources/public/error/404.html
<html lang="en">
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/css/bootstrap.min.css">
<script src="https://code.jquery.com/jquery-3.5.1.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/js/bootstrap.min.js"></script>
</head>
<body>
<div class="container">
<div class="jumbotron alert-danger">
<h1>Oops!</h1>
<h2>404 Not Found</h2>
</div>
</div>
</body>
</html>目录结构
src
├── main
│ ├── java
│ │ └── com
│ │ └── pxample
│ │ └── pemo
│ │ └── PemoApplication.java
│ └── resources
│ ├── application-dev.properties
│ ├── application-production.properties
│ ├── application.properties
│ ├── application-staging.properties
│ ├── public
│ │ └── error
│ │ └── 404.html
│ ├── static
│ └── templates
└── test
└── java
└── com
└── pxample
└── pemo
└── PemoApplicationTests.java
使用其中配置的一个端口号进行启动
运行 ./mvnw spring-boot:run -Dspring-boot.run.profiles=production
[user@localhost pemo]$ ./mvnw spring-boot:run -Dspring-boot.run.profiles=production
[INFO] Scanning for projects...
[INFO]
[INFO] --------------------------< com.pxample:pemo >--------------------------
[INFO] Building pemo 0.0.1-SNAPSHOT
[INFO] --------------------------------[ jar ]---------------------------------
[INFO]
[INFO] >>> spring-boot-maven-plugin:2.6.0:run (default-cli) > test-compile @ pemo >>>
[INFO]
[INFO] --- maven-resources-plugin:3.2.0:resources (default-resources) @ pemo ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Using 'UTF-8' encoding to copy filtered properties files.
[INFO] Copying 4 resources
[INFO] Copying 0 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.8.1:compile (default-compile) @ pemo ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 1 source file to /home/ideajavaprj/pemo/target/classes
[INFO]
[INFO] --- maven-resources-plugin:3.2.0:testResources (default-testResources) @ pemo ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Using 'UTF-8' encoding to copy filtered properties files.
[INFO] skip non existing resourceDirectory /home/ideajavaprj/pemo/src/test/resources
[INFO]
[INFO] --- maven-compiler-plugin:3.8.1:testCompile (default-testCompile) @ pemo ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 1 source file to /home/ideajavaprj/pemo/target/test-classes
[INFO]
[INFO] <<< spring-boot-maven-plugin:2.6.0:run (default-cli) < test-compile @ pemo <<<
[INFO]
[INFO]
[INFO] --- spring-boot-maven-plugin:2.6.0:run (default-cli) @ pemo ---
[INFO] Attaching agents: []
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v2.6.0)
2021-11-24 11:04:35.245 INFO 10449 --- [ main] com.pxample.pemo.PemoApplication : Starting PemoApplication using Java 1.8.0_212 on localhost.localdomain with PID 10449 (/home/ideajavaprj/pemo/target/classes started by codc in /home/ideajavaprj/pemo)
2021-11-24 11:04:35.247 INFO 10449 --- [ main] com.pxample.pemo.PemoApplication : The following profiles are active: production
2021-11-24 11:04:36.148 INFO 10449 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8092 (http)
2021-11-24 11:04:36.161 INFO 10449 --- [ main] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2021-11-24 11:04:36.161 INFO 10449 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.55]
2021-11-24 11:04:36.206 INFO 10449 --- [ main] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2021-11-24 11:04:36.206 INFO 10449 --- [ main] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 898 ms
2021-11-24 11:04:36.517 INFO 10449 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat started on port(s): 8092 (http) with context path ''
2021-11-24 11:04:36.526 INFO 10449 --- [ main] com.pxample.pemo.PemoApplication : Started PemoApplication in 1.697 seconds (JVM running for 2.048)http://localhost:8092/
页面返回显示为 This is PefaultPage~
http://localhost:8092/?customdefaultstr=abc
页面返回显示为 This is abc~
http://localhost:8092/pemohello
页面返回显示为 Hello PemoWorld~
http://localhost:8092/pemohello?name=Nick
页面返回显示为 Hello Nick~
[1] how-to-change-default-port-in-spring-boot javatodev [2] https://spring.io/quickstart
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