Intellij로 spring boot 프로젝트 생성

Intellij로 spring boot 프로젝트 생성

java 17(LTS) 설치

- https://scbyun.com/1441

C:\Users\Administrator>java --version
java 17.0.5 2022-10-18 LTS
Java(TM) SE Runtime Environment (build 17.0.5+9-LTS-191)
Java HotSpot(TM) 64-Bit Server VM (build 17.0.5+9-LTS-191, mixed mode, sharing)

C:\Users\Administrator>echo %java_home%
C:\Program Files\Java\jdk-17.0.5

인텔리제이(IntelliJ) 프로젝트 생성

Spring Initialzr 설정

• Name : 프로젝트 이름(demo)
• Location : 프로젝트 저장 위치(경로 설정)
• Language : 사용언어 설정(Java 설정)
• Type : 라이브러리 의존성을 위한 도구 설정(Gradle - Grooy 설정)
• Group : 프로젝트 그룹 이름 설정(com.example)
• Artifact : 프로젝트 이름(demo)
• Package name : 프로젝트 코드가 들어갈 패키지 이름(com.example.demo)
• JDK : 프로젝트에 사용할 JDK 설정
• Java: java 버전 설정
• Packaging : 패키징 될 파일을 지정 (Jar 설정)

 

Spring Boot Dependencies 설정(패키지 설치)

• Spring Boot DevTools
• Lombok
• Spring Web

 

확장 라이브러리 다운로드(External Libraries)

Spring Boot 프로젝트(웹 서버) 실행

Shift + F10 또는 아래 버튼으로 tomcat 실행

 

웹 브라우저 : http://localhost:8080

"Hello World!" 출력하기

DemoApplication.java 편집

package com.example.demo;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@SpringBootApplication(exclude = DataSourceAutoConfiguration.class)
public class DemoApplication {

	@RequestMapping("/")
	String home() {
		return "Hello World!";
	}
	public static void main(String[] args) {
		SpringApplication.run(DemoApplication.class, args);
	}

}

---

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gradlew 사용법

gradlew tasks

>gradlew tasks

> Task :tasks

------------------------------------------------------------
Tasks runnable from root project 'demo'
------------------------------------------------------------

Application tasks
-----------------
bootRun - Runs this project as a Spring Boot application.

Build tasks
-----------
assemble - Assembles the outputs of this project.
bootBuildImage - Builds an OCI image of the application using the output of the bootJar task
bootJar - Assembles an executable jar archive containing the main classes and their dependencies.
build - Assembles and tests this project.
buildDependents - Assembles and tests this project and all projects that depend on it.
buildNeeded - Assembles and tests this project and all projects it depends on.
classes - Assembles main classes.
clean - Deletes the build directory.
jar - Assembles a jar archive containing the main classes.
resolveMainClassName - Resolves the name of the application's main class.
testClasses - Assembles test classes.

Build Setup tasks
-----------------
init - Initializes a new Gradle build.
wrapper - Generates Gradle wrapper files.

Documentation tasks
-------------------
javadoc - Generates Javadoc API documentation for the main source code.

Help tasks
----------
buildEnvironment - Displays all buildscript dependencies declared in root project 'demo'.
dependencies - Displays all dependencies declared in root project 'demo'.
dependencyInsight - Displays the insight into a specific dependency in root project 'demo'.
dependencyManagement - Displays the dependency management declared in root project 'demo'.
help - Displays a help message.
javaToolchains - Displays the detected java toolchains.
outgoingVariants - Displays the outgoing variants of root project 'demo'.
projects - Displays the sub-projects of root project 'demo'.
properties - Displays the properties of root project 'demo'.
resolvableConfigurations - Displays the configurations that can be resolved in root project 'demo'.
tasks - Displays the tasks runnable from root project 'demo'.

Verification tasks
------------------
check - Runs all checks.
test - Runs the test suite.

Rules
-----
Pattern: clean<TaskName>: Cleans the output files of a task.
Pattern: build<ConfigurationName>: Assembles the artifacts of a configuration.

To see all tasks and more detail, run gradlew tasks --all

To see more detail about a task, run gradlew help --task <task>

BUILD SUCCESSFUL in 1s
1 actionable task: 1 executed

gradlew --help

>gradlew --help

To see help contextual to the project, use gradlew help

USAGE: gradlew [option...] [task...]

-?, -h, --help                     Shows this help message.
-a, --no-rebuild                   Do not rebuild project dependencies.
-b, --build-file                   Specify the build file. [deprecated]
--build-cache                      Enables the Gradle build cache. Gradle will try to reuse outputs from previous builds.
-c, --settings-file                Specify the settings file. [deprecated]
--configuration-cache              Enables the configuration cache. Gradle will try to reuse the build configuration from previous builds. [incubating]
--configuration-cache-problems     Configures how the configuration cache handles problems (fail or warn). Defaults to fail. [incubating]
--configure-on-demand              Configure necessary projects only. Gradle will attempt to reduce configuration time for large multi-project builds. [incubating]
--console                          Specifies which type of console output to generate. Values are 'plain', 'auto' (default), 'rich' or 'verbose'.
--continue                         Continue task execution after a task failure.
-D, --system-prop                  Set system property of the JVM (e.g. -Dmyprop=myvalue).
-d, --debug                        Log in debug mode (includes normal stacktrace).
--daemon                           Uses the Gradle daemon to run the build. Starts the daemon if not running.
--export-keys                      Exports the public keys used for dependency verification.
-F, --dependency-verification      Configures the dependency verification mode. Values are 'strict', 'lenient' or 'off'.
--foreground                       Starts the Gradle daemon in the foreground.
-g, --gradle-user-home             Specifies the Gradle user home directory. Defaults to ~/.gradle
-I, --init-script                  Specify an initialization script.
-i, --info                         Set log level to info.
--include-build                    Include the specified build in the composite.
-M, --write-verification-metadata  Generates checksums for dependencies used in the project (comma-separated list)
-m, --dry-run                      Run the builds with all task actions disabled.
--max-workers                      Configure the number of concurrent workers Gradle is allowed to use.
--no-build-cache                   Disables the Gradle build cache.
--no-configuration-cache           Disables the configuration cache. [incubating]
--no-configure-on-demand           Disables the use of configuration on demand. [incubating]
--no-daemon                        Do not use the Gradle daemon to run the build. Useful occasionally if you have configured Gradle to always run with the daemon by default.
--no-parallel                      Disables parallel execution to build projects.
--no-scan                          Disables the creation of a build scan. For more information about build scans, please visit https://gradle.com/build-scans.
--no-watch-fs                      Disables watching the file system.
--offline                          Execute the build without accessing network resources.
-P, --project-prop                 Set project property for the build script (e.g. -Pmyprop=myvalue).
-p, --project-dir                  Specifies the start directory for Gradle. Defaults to current directory.
--parallel                         Build projects in parallel. Gradle will attempt to determine the optimal number of executor threads to use.
--priority                         Specifies the scheduling priority for the Gradle daemon and all processes launched by it. Values are 'normal' (default) or 'low'
--profile                          Profile build execution time and generates a report in the <build_dir>/reports/profile directory.
--project-cache-dir                Specify the project-specific cache directory. Defaults to .gradle in the root project directory.
-q, --quiet                        Log errors only.
--refresh-dependencies             Refresh the state of dependencies.
--refresh-keys                     Refresh the public keys used for dependency verification.
--rerun-tasks                      Ignore previously cached task results.
-S, --full-stacktrace              Print out the full (very verbose) stacktrace for all exceptions.
-s, --stacktrace                   Print out the stacktrace for all exceptions.
--scan                             Creates a build scan. Gradle will emit a warning if the build scan plugin has not been applied. (https://gradle.com/build-scans)
--status                           Shows status of running and recently stopped Gradle daemon(s).
--stop                             Stops the Gradle daemon if it is running.
-t, --continuous                   Enables continuous build. Gradle does not exit and will re-execute tasks when task file inputs change.
--update-locks                     Perform a partial update of the dependency lock, letting passed in module notations change version. [incubating]
-V, --show-version                 Print version info and continue.
-v, --version                      Print version info and exit.
-w, --warn                         Set log level to warn.
--warning-mode                     Specifies which mode of warnings to generate. Values are 'all', 'fail', 'summary'(default) or 'none'
--watch-fs                         Enables watching the file system for changes, allowing data about the file system to be re-used for the next build.
--write-locks                      Persists dependency resolution for locked configurations, ignoring existing locking information if it exists
-x, --exclude-task                 Specify a task to be excluded from execution.
--

Spring Boot 빌드(gradlew build)

gradlew build

>gradlew build

BUILD SUCCESSFUL in 9s
7 actionable tasks: 5 executed, 2 up-to-date

dir build\libs\*.jar

 

Spring Boot 프로젝트 실행

java -jar build\libs\demo-0.0.1-SNAPSHOT.jar

 

curl 명령으로 웹 페이지 확인

curl localhost:8080

>curl localhost:8080
Hello World!