注：spring官网例子
1.创建项目目录结构：src的根目录是demo，即demo/src...
└── src
└── main
└── java
└── hello
2.创建文件
① src/main/java/hello/HelloWorld.java
package hello;
public class HelloWorld {
public static void main(String[] args) {
Greeter greeter = new Greeter();
System.out.println(greeter.sayHello());
}
}
② src/main/java/hello/Greeter.java
package hello;
public class Greeter {
public String sayHello() {
return "Hello world!";
}
}
3.下载gradle二进制包：http://www.gradle.org/downloads，把bin目录添加到path变量中
① 测试添加是否成功
命令：可以使用gradle或gradle -v来检测
gradle
C:\Users\admin>gradle
Starting a Gradle Daemon (subsequent builds will be faster)
> Task :help
Welcome to Gradle 4.1.
To run a build, run gradle <task> ...
To see a list of available tasks, run gradle tasks
To see a list of command-line options, run gradle --help
To see more detail about a task, run gradle help --task <task>
BUILD SUCCESSFUL in 6s
1 actionable task: 1 executed
gradle -v
C:\Users\admin>gradle -v② 查看gradle可以做些什么
------------------------------------------------------------
Gradle 4.1
------------------------------------------------------------
Build time: 2017-08-07 14:38:48 UTC
Revision: 941559e020f6c357ebb08d5c67acdb858a3defc2
Groovy: 2.4.11
Ant: Apache Ant(TM) version 1.9.6 compiled on June 29 2015
JVM: 1.8.0_112 (Oracle Corporation 25.112-b15)
OS: Windows 10 10.0 amd64
命令：gradle tasks
gradle tasks
C:\Users\admin>gradle tasks3.在项目根目录demo下创建build.gradle文件，文件添加一行
> Task :tasks
------------------------------------------------------------
All tasks runnable from root project
------------------------------------------------------------
Build Setup tasks
-----------------
init - Initializes a new Gradle build.
wrapper - Generates Gradle wrapper files.
Help tasks
----------
buildEnvironment - Displays all buildscript dependencies declared in root project 'admin'.
components - Displays the components produced by root project 'admin'. [incubating]
dependencies - Displays all dependencies declared in root project 'admin'.
dependencyInsight - Displays the insight into a specific dependency in root project 'admin'.
dependentComponents - Displays the dependent components of components in root project 'admin'. [incubating]
help - Displays a help message.
model - Displays the configuration model of root project 'admin'. [incubating]
projects - Displays the sub-projects of root project 'admin'.
properties - Displays the properties of root project 'admin'.
tasks - Displays the tasks runnable from root project 'admin'.
To see all tasks and more detail, run gradle tasks --all
To see more detail about a task, run gradle help --task <task>
BUILD SUCCESSFUL in 0s
1 actionable task: 1 executed
apply plugin: 'java'D:\Tools\idea\workspace\spring-boot\demo>gradle tasks
> Task :tasks
------------------------------------------------------------
All tasks runnable from root project
------------------------------------------------------------
Build tasks
-----------
assemble - Assembles the outputs of this project.
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.
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'.
components - Displays the components produced by root project 'demo'. [incubating]
dependencies - Displays all dependencies declared in root project 'demo'.
dependencyInsight - Displays the insight into a specific dependency in root project 'demo'.
dependentComponents - Displays the dependent components of components in root project 'demo'. [incubating]
help - Displays a help message.
model - Displays the configuration model of root project 'demo'. [incubating]
projects - Displays the sub-projects of root project 'demo'.
properties - Displays the properties of root project 'demo'.
tasks - Displays the tasks runnable from root project 'demo'.
Verification tasks
------------------
check - Runs all checks.
test - Runs the unit tests.
Rules
-----
Pattern: clean<TaskName>: Cleans the output files of a task.
Pattern: build<ConfigurationName>: Assembles the artifacts of a configuration.
Pattern: upload<ConfigurationName>: Assembles and uploads the artifacts belonging to a configuration.
To see all tasks and more detail, run gradle tasks --all
To see more detail about a task, run gradle help --task <task>
BUILD SUCCESSFUL in 1s
1 actionable task: 1 executedgradle buildpackage hello;此时修改build.gradle.
import org.joda.time.LocalTime;
public class HelloWorld {
public static void main(String[] args) {
LocalTime currentTime = new LocalTime();
System.out.println("The current local time is: " + currentTime);
Greeter greeter = new Greeter();
System.out.println(greeter.sayHello());
}
}
repositories {
mavenCentral()
}sourceCompatibility = 1.8targetCompatibility = 1.8dependencies { compile "joda-time:joda-time:2.2" testCompile "junit:junit:4.12"}jar { baseName = 'gs-gradle' version = '0.1.0'}
$ gradle build
5.使用gradle Wrapper
$ gradle wrapper --gradle-version 2.13
└── <project folder>
└── gradlew
└── gradlew.bat
└── gradle
└── wrapper
└── gradle-wrapper.jar
└── gradle-wrapper.properties
./gradlew build
build6.我的gradle Wrapper执行没有下载下来，后续操作没做
├── classes
│ └── main
│ └── hello
│ ├── Greeter.class
│ └── HelloWorld.class
├── dependency-cache
├── libs
│ └── gs-gradle-0.1.0.jar
└── tmp
└── jar
└── MANIFEST.MF
apply plugin: 'application'
mainClassName = 'hello.HelloWorld'
$ ./gradlew run
:compileJava UP-TO-DATE
:processResources UP-TO-DATE
:classes UP-TO-DATE
:run
The current local time is: 16:16:20.544
Hello world!
BUILD SUCCESSFUL
Total time: 3.798 secs