我们在Project Creation章节中学到的是如何使用Maven创建Java应用程序.现在我们将看到如何构建和测试应用程序.
转到您创建Java应用程序的C:/MVN目录.打开 consumerBanking 文件夹.您将看到 POM.xml 文件，其中包含以下内容.
<project xmlns = "http://maven.apache.org/POM/4.0.0" xmlns:xsi="https://img01.yuandaxia.cn/Content/img/tutorials/maven/XMLSchema-instance" xsi:schemaLocation = "http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.companyname.projectgroup</groupId> <artifactId>project</artifactId> <version>1.0</version> <dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>3.8.1</version> </dependency> </dependencies> </project>
在这里你可以看到，Maven已经添加了Junit作为测试框架.默认情况下，Maven在其默认目录结构中添加源文件 App.java 和测试文件 AppTest.java ，如前一章所述.
让我们打开命令控制台，转到C:\ MVNN \ cosumerBanking目录并执行以下 mvn 命令.
C:\ MVNN \ consumerBanking> mvn clean package
Maven将开始构建项目.
[INFO] Scanning for projects...
[INFO] -------------------------------------------------------------------
[INFO] Building consumerBanking
[INFO] task-segment: [clean, package]
[INFO] -------------------------------------------------------------------
[INFO] [clean:clean {execution: default-clean}]
[INFO] Deleting directory C:\MVN\consumerBanking\target
[INFO] [resources:resources {execution: default-resources}]
[WARNING] Using platform encoding (Cp1252 actually) to copy filtered resources,
i.e. build is platform dependent!
[INFO] skip non existing resourceDirectory C:\MVN\consumerBanking\src\main\resources
[INFO] [compiler:compile {execution: default-compile}]
[INFO] Compiling 1 source file to C:\MVN\consumerBanking\target\classes
[INFO] [resources:testResources {execution: default-testResources}]
[WARNING] Using platform encoding (Cp1252 actually) to copy filtered resources,
i.e. build is platform dependent!
[INFO] skip non existing resourceDirectory C:\MVN\consumerBanking\src\test\resources
[INFO] [compiler:testCompile {execution: default-testCompile}]
[INFO] Compiling 1 source file to C:\MVN\consumerBanking\target\test-classes
[INFO] [surefire:test {execution: default-test}]
[INFO] Surefire report directory: C:\MVN\consumerBanking\target\surefire-reports
-----------------------------------------------------
T E S T S
-----------------------------------------------------
Running com.companyname.bank.AppTest
Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.027 sec
Results :
Tests run: 1, Failures: 0, Errors: 0, Skipped: 0
[INFO] [jar:jar {execution: default-jar}]
[INFO] Building jar: C:\MVN\consumerBanking\target\
consumerBanking-1.0-SNAPSHOT.jar
[INFO]-----------------------------------------------
[INFO] BUILD SUCCESSFUL
[INFO]-----------------------------------------------
[INFO] Total time: 2 seconds
[INFO] Finished at: Tue Jul 10 16:52:18 IST 2012
[INFO] Final Memory: 16M/89M
[INFO]-----------------------------------------------你已经构建了你的项目并创建了最终的jar文件，以下是关键的学习概念 :
我们给maven两个目标，首先清理目标目录(clean)，然后将项目构建输出打包为jar(包).
打包jar在consumerBanking \ target文件夹中可用作consumerBanking-1.0-SNAPSHOT.jar.
测试报告可在consumerBanking\target\surefire-reports文件夹中找到.
Maven编译源代码文件，然后测试源代码文件( s).
然后Maven运行测试用例.
最后，Maven创建了包.
现在打开命令控制台，转到C:\ MVN\consumerBanking\target\classes目录并执行以下java命令.
> java com.companyname.bank.App
您将看到结果如下 :
Hello World！
让我们看看如何在项目中添加其他Java文件.打开C:\MVN\consumerBanking\src\main\java\com\companyname\bank folder, create Util class in it as Util.java.
package com.companyname.bank;
public class Util {
public static void printMessage(String message){
System.out.println(message);
}
}更新App类以使用Util类.
package com.companyname.bank;
/**
* Hello world!
*
*/
public class App {
public static void main( String[] args ){
Util.printMessage("Hello World!");
}
}现在打开命令控制台，转到 C:\ MVNN \ cosumerBanking 目录并执行以下 mvn 命令.
> mvn clean compile
Maven构建成功后，转到C:\ MVNN \ cosumerBanking \ target"\ nclasses目录并执行以下java命令.
> java -cp com.companyname.bank.App
您将看到以下结果: ;
Hello World！
