In the previous chapter, we learned how to use Maven to create Java applications. Next we will learn how to build and test this project.
Go to the C:/MVN folder and open the consumerBanking folder. You will see a pom.xml file with the following code:
<projectxmlns="http://maven.apache.org/POM/4.0.0"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://maven.apache.org/POM/4.0.0
http://maven.apache.org/maven-v4_0_0.xsd"><modelVersion>4.0.0</modelVersion><groupId>com.companyname.bank</groupId><artifactId>consumerBanking</artifactId><packaging>jar</packaging><version>1.0-SNAPSHOT</version><name>consumerBanking</name><url>http://maven.apache.org</url><dependencies><dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>3.8.1</version><scope>test</scope></dependency></dependencies></project>
From the above xml code, we can see that Maven has added JUnit as the testing framework.
默认情况下 Maven 添加了一个源码文件 C:MVNconsumerBankingsrcmainjavacomcompanynamebankApp.java 和一个测试文件 C:MVNconsumerBankingsrctestjavacomcompanynamebankAppTest.java 。
Open the command console, jump to the C:MVNconsumerBanking directory, and execute the following mvn command to start building the project:
C:\MVN\consumerBanking>mvn clean package
[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] [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] ------------------------------------------------------------------------
After execution, we have built our own project and created the final jar file. Here are the key concepts to learn:
We gave maven two goals, first cleaning up the target directory (clean), and then packaging the output of the project build as a jar (package) file.
The packaged jar file is available in consumerBankingtarget and is named consumerBanking-1.0-SNAPSHOT.jar.
Test reports are stored in the consumerBankingtargetsurefire-reports folder.
Maven compiles source files, as well as testing source files.
Then Maven runs the test case.
Finally, Maven creates the project package.
C:\MVN\consumerBanking\target\classes>java com.companyname.bank.App
You can see the results:
Hello World!
Add Java source file