Question

我想在我的linux终端中编译一个Netbeans Maven - Java应用程序。

这是因为我想使用Git CVS并能够在独立于IDE的服务器中编译项目。

但我很难理解依赖关系是如何工作的，或者是我的想法。

我使用简单的java应用程序代码连接到mysql数据库并获取一些信息。

我正在使用此代码：

public static void main(String[] args) throws Exception {

    Class.forName("com.mysql.jdbc.Driver");
    try (Connection connect = DriverManager.getConnection("jdbc:mysql://192.168.2.21/altadb?" + "user=marco&password=Marco19")) {

        Statement statement = connect.createStatement();
        ResultSet resultSet = statement.executeQuery("select idCuentaConcentradora, noCliente, nombreCliente, noCuenta, nombreCuenta from altadb.catCuentaConcentradora");

        while (resultSet.next()) {
            int idCuentaConcentradora = resultSet.getInt("idCuentaConcentradora");
            String noCliente = resultSet.getString("noCliente");
            String nombreCliente = resultSet.getString("nombreCliente");
            String noCuenta = resultSet.getString("noCuenta");
            String nombreCuenta = resultSet.getString("nombreCuenta");
            System.out.println("idCuentaConcentradora: " + idCuentaConcentradora);
            System.out.println("noCliente: " + noCliente);
            System.out.println("nombreCliente: " + nombreCliente);
            System.out.println("noCuenta: " + noCuenta);
            System.out.println("nombreCuenta: " + nombreCuenta);
            System.out.println("---------------------------------------------------");

        }
    } catch (SQLException e) {
        System.out.println(e.getMessage());
    }

}

然后将mysql-connector-java添加到项目依赖项中，pom.xml如下所示：

<?xml version="1.0" encoding="UTF-8"?><project xmlns="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/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.alta.MySQLAccess_Mvn</groupId>
    <artifactId>MySQLAccess_Mvn</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>jar</packaging>
    <dependencies>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.31</version>
        </dependency>
    </dependencies>
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.source>1.7</maven.compiler.source>
        <maven.compiler.target>1.7</maven.compiler.target>
    </properties>
</project>

如果我使用netbeans IDE和clean并构建然后运行项目，则没有错误，并且从数据库中获取信息。

如果我尝试从终端做同样的事情，我会收到错误：

[marko@mark-laptop MySQLAccess_Mvn]$ mvn clean install
[INFO] Scanning for projects...
[INFO] 
[INFO] Using the builder org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder with a thread count of 1
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building MySQLAccess_Mvn 1.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ MySQLAccess_Mvn ---
[INFO] 
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ MySQLAccess_Mvn ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 0 resource
[INFO] 
[INFO] --- maven-compiler-plugin:2.5.1:compile (default-compile) @ MySQLAccess_Mvn ---
[INFO] Compiling 1 source file to /home/marko/NetBeansProjects/MySQLAccess_Mvn/target/classes
[INFO] 
[INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ MySQLAccess_Mvn ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory /home/marko/NetBeansProjects/MySQLAccess_Mvn/src/test/resources
[INFO] 
[INFO] --- maven-compiler-plugin:2.5.1:testCompile (default-testCompile) @ MySQLAccess_Mvn ---
[INFO] No sources to compile
[INFO] 
[INFO] --- maven-surefire-plugin:2.12.4:test (default-test) @ MySQLAccess_Mvn ---
[INFO] No tests to run.
[INFO] 
[INFO] --- maven-jar-plugin:2.4:jar (default-jar) @ MySQLAccess_Mvn ---
[INFO] Building jar: /home/marko/NetBeansProjects/MySQLAccess_Mvn/target/MySQLAccess_Mvn-1.0-SNAPSHOT.jar
[INFO] 
[INFO] --- maven-install-plugin:2.4:install (default-install) @ MySQLAccess_Mvn ---
[INFO] Installing /home/marko/NetBeansProjects/MySQLAccess_Mvn/target/MySQLAccess_Mvn-1.0-SNAPSHOT.jar to /home/marko/.m2/repository/com/alta/MySQLAccess_Mvn/MySQLAccess_Mvn/1.0-SNAPSHOT/MySQLAccess_Mvn-1.0-SNAPSHOT.jar
[INFO] Installing /home/marko/NetBeansProjects/MySQLAccess_Mvn/pom.xml to /home/marko/.m2/repository/com/alta/MySQLAccess_Mvn/MySQLAccess_Mvn/1.0-SNAPSHOT/MySQLAccess_Mvn-1.0-SNAPSHOT.pom
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.866 s
[INFO] Finished at: 2014-06-18T18:46:28-06:00
[INFO] Final Memory: 12M/144M
[INFO] ------------------------------------------------------------------------

[marko@mark-laptop MySQLAccess_Mvn]$ java -cp target/MySQLAccess_Mvn-1.0-SNAPSHOT.jar com.marco.mysql.first.test.test 
Exception in thread "main" java.lang.ClassNotFoundException: com.mysql.jdbc.Driver
    at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:190)
    at com.marco.mysql.first.test.test.main(test.java:23)

因为在pom.xml中声明了依赖项，所以mysql驱动程序已经被添加到项目库中了......但它没有。

我想从终端，从构建到运行，从Netbeans获得相同的输出。

我不知道该怎么做。

Answer 1

如果您已将maven添加到系统路径，那么您可以使用提示符上的maven命令简单地编译它：

mvm clean install

在终端编译maven netbeans项目

1 个答案: