Spring 学习 171005 Building Java Projects with Gradle

Posted 2021-04-27 BugQ

网址：

http://spring.io/guides/gs/gradle/#initial

 

1.git clone https://github.com/spring-guides/gs-gradle.git

2.cd gs-gradle/initial

 

3.install Gradle

 

需要安装sdkman

 

到http://sdkman.io/，点击右上角的install

 

执行命令：

$ curl -s "https://get.sdkman.io"| bash

出错

 Please install zip on your system using yourfavourite package manager.

 

查找解决返回

到 https://github.com/bmatzelle/gow/releases网站

下载Gow-0.8.0.exe，并且安装

然后，重新开sourcetree，开terminal，有了 zip

注意： C:\Program Files (x86)\VMware\VMware Workstation的下面也有一个zip.exe，不知道是否好用

 

zip在 C:\Program Files(x86)\Gow\bin

souretree的terminal在C:\Users\k\AppData\Local\Atlassian\SourceTree\git_local\mingw32\bin

 

执行$ curl -s "https://get.sdkman.io" | bash

成功，

 

在执行

k@acer-pc MINGW32 /d/ws/gosrc (master)

$ source $HOME/.sdkman/bin/sdkman-init.sh

 

k@acer-pc MINGW32 /d/ws/gosrc (master)

$ sdk version

==== BROADCAST=================================================================

* 02/10/17: Gradle 4.2.1 released onSDKMAN! #gradle

* 29/09/17: Kotlin 1.1.51 released onSDKMAN! #kotlin

* 28/09/17: JDK 9-zulu by Azul is nowgenerally available for download from SDKMAN! on Linux, MacOS, and Windows.#java

================================================================================

 

SDKMAN 5.5.11+256

 

成功

 

然后装gradle

https://gradle.org/install/ 的网站有说明，如下

先测试java，再安装，结果不好用，不兼容的意思

 

k@acer-pc MINGW32 /d/ws/gosrc (master)

$ java -version

java version "1.8.0_144"

Java(TM) SE Runtime Environment (build1.8.0_144-b01)

Java HotSpot(TM) 64-Bit Server VM (build 25.144-b01,mixed mode)

 

k@acer-pc MINGW32 /d/ws/gosrc (master)

$ sdk install gradle 4.2

 

Stop! gradle 4.2 is not available. Possiblecauses:

 *4.2 is an invalid version

 *gradle binaries are incompatible with MINGW32_NT-10.0-WOW

 

 

 

到https://gradle.org/releases/ 下载4.2

 

下载完成后，创建D:\ws\Gradle\gradle-4.2，解压到这个文件夹中

然后设定环境变量，追加到PATH中，在最后即可。

 

新开command，测试，如下，成功

C:\Users\k>gradle -v

 

------------------------------------------------------------

Gradle 4.2

------------------------------------------------------------

 

Build time:   2017-09-20 14:48:23 UTC

Revision:     5ba503cc17748671c83ce35d7da1cffd6e24dfbd

 

Groovy:       2.4.11

Ant:          Apache Ant(TM) version 1.9.6 compiledon June 29 2015

JVM:          1.7.0_45 (OracleCorporation 24.45-b08)

OS:           Windows 8 6.2 amd64

 

重新开sourcetree+terminal，测试，也ok

k@acer-pc MINGW32 /d/ws/gosrc (master)

$ gradle -v

 

------------------------------------------------------------

Gradle 4.2

------------------------------------------------------------

 

Build time:   2017-09-20 14:48:23 UTC

Revision:     5ba503cc17748671c83ce35d7da1cffd6e24dfbd

 

Groovy:       2.4.11

Ant:          Apache Ant(TM) version 1.9.6 compiledon June 29 2015

JVM:          1.7.0_45 (Oracle Corporation24.45-b08)

OS:           Windows 8 6.2 amd64

 

那我费半天劲装sdk有什么用了？也许以后能够用得上

 

 

可以实验 gradle，gradle tasks

 

需要有个build.gradle配置文件，内容为apply plugin: 'java'

 

然后执行gradle build

k@acer-pc MINGW32 /d/ws/gs-gradle/initial(master)

$ gradle build

Support for running Gradle using Java 7 hasbeen deprecated and is scheduled to be removed in Gradle 5.0. Please seehttps://docs.gradle.org/4.2/userguide/java_plugin.html#sec:java_cross_compilationfor more details.

:compileJava

:processResources NO-SOURCE

:classes

:jar

:assemble

:compileTestJava NO-SOURCE

:processTestResources NO-SOURCE

:testClasses UP-TO-DATE

:test NO-SOURCE

:check UP-TO-DATE

:build

 

BUILD SUCCESSFUL in 7s

2 actionable tasks: 2 executed

 

查看生成的build目录，有2个class文件和一个jar文件

 

 

接着练习：

 

 

到 complete目录里面，用最新的build.gradle文件

sourceCompatibility = 1.8

targetCompatibility = 1.8

这个地方会出错，开始怀疑是gradle的version问题，看gradle -v是1.7，下载了2.13版本，还是同样到问题。看version还是一样。

 

后来上网查，发现是自己的环境变量的java_home还是1.7,虽然jdk的path是1.8，但是gradle使用了java_home，所以用的1.7，就compile不过了

 

花费了2个小时啊

 

改完了javahome，再次执行，如下，

$ gradle build

:compileJava UP-TO-DATE

:processResources NO-SOURCE

:classes UP-TO-DATE

:jar UP-TO-DATE

:startScripts UP-TO-DATE

:distTar UP-TO-DATE

:distZip UP-TO-DATE

:assemble UP-TO-DATE

:compileTestJava UP-TO-DATE

:processTestResources NO-SOURCE

:testClasses UP-TO-DATE

:test UP-TO-DATE

:check UP-TO-DATE

:build UP-TO-DATE

 

BUILD SUCCESSFUL in 7s

7 actionable tasks: 7 up-to-date

 

可以看到之前出现的support java7的字样，其实是个warn，只不过自己没有注意到而已。惭愧啊

 

下一步，可以通过执行 gradle wrapper 来得到一个通用的jar 和 script进行仓库管理，这样其他人就不需要自己安装了

 

complete和initial目录下面都已经既存了，也可以找个其他的目录执行一下。就会发现这些文件会生成出来。

 

第一次在complete下面运行， ./gradlew.bat build ,会进行下载，然后生成build文件夹

k@acer-pc MINGW32 /d/ws/gs-gradle/complete(master)

$ ./gradlew.bat build

Downloadinghttps://services.gradle.org/distributions/gradle-2.13-bin.zip

 

执行jar命令，可以看生成的jar的文件的内容，注意有引号，因为javapath中有space

k@acer-pc MINGW32 /d/ws/gs-gradle/complete(master)

$ "$JAVA_HOME/bin/jar" tvf./build/libs/gs-gradle-0.1.0.jar

    0 Thu Oct 05 07:43:56 CST 2017 META-INF/

   25 Thu Oct 05 07:43:56 CST 2017 META-INF/MANIFEST.MF

    0 Thu Oct 05 07:43:56 CST 2017 hello/

  369 Thu Oct 05 07:43:56 CST 2017 hello/Greeter.class

  988 Thu Oct 05 07:43:56 CST 2017 hello/HelloWorld.class

 

然后看直接运行的效果

k@acer-pc MINGW32 /d/ws/gs-gradle/complete(master)

$ ./gradlew.bat run

:compileJava UP-TO-DATE

:processResources UP-TO-DATE

:classes UP-TO-DATE

:run

The current local time is: 07:55:14.693

Hello world!

 

BUILD SUCCESSFUL

 

Total time: 16.728 secs

 

最后附上一个完整的build.gradle

apply plugin: 'java'

apply plugin: 'eclipse'

apply plugin: 'application'

 

mainClassName = 'hello.HelloWorld'

 

// tag::repositories[]

repositories {

   mavenCentral()

}

// end::repositories[]

 

// tag::jar[]

jar {

   baseName = 'gs-gradle'

   version =  '0.1.0'

}

// end::jar[]

 

// tag::dependencies[]

sourceCompatibility = 1.8

targetCompatibility = 1.8

 

dependencies {

   compile "joda-time:joda-time:2.2"

   testCompile "junit:junit:4.12"

}

// end::dependencies[]

 

// tag::wrapper[]

// end::wrapper[]