java - 打包并运行应用程序后，我得到java.lang.ClassNotFoundException:org.apache.hive.jdbc.HiveDriver

Question

当我尝试在IDEA中运行代码时，没有出现此错误，但是在打包并尝试使用

java -cp app.jar com.hive.connect.controller.RecordController

我得到这个异常(exception)。

java.lang.ClassNotFoundException: org.apache.hive.jdbc.HiveDriver

我的行家

  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.12</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>org.apache.hive</groupId>
      <artifactId>hive-jdbc</artifactId>
      <version>1.1.0</version>
    </dependency>
    <dependency>
      <groupId>org.apache.hadoop</groupId>
      <artifactId>hadoop-core</artifactId>
      <version>1.2.1</version>
    </dependency>
  </dependencies>

我的密码

public class RecordController {
private static String driverName = "org.apache.hive.jdbc.HiveDriver";

public static void main(String[] args) throws SQLException, ClassNotFoundException {
    Class.forName(driverName);
    Connection con = DriverManager
                       .getConnection("jdbc:hive2://host:port/db;" +
                                        "principal=principal");
    Statement stmt = con.createStatement();
    String tableName = "evkuzmin_testHiveDriverTable";
    stmt.execute("drop table if exists " + tableName);
    stmt.execute("create table " + tableName + " (key int, value string)");
  }
}

为什么会这样？

编辑
完全错误

Exception in thread "main" java.lang.ClassNotFoundException: org.apache.hive.jdbc.HiveDriver
        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.hive.connect.controller.RecordController.main(RecordController.java:18)

Answer 1

尝试这样:

"%JAVA_HOME%\bin\java.exe" -cp  "%~dp0\hive-jdbc.jar;%~dp0\app.jar" com.hive.connect.controller.RecordController

代替这个:

java -cp app.jar com.hive.connect.controller.RecordController

该错误是由于尝试运行Java代码时Hive JDBC jar不可用(而这又会尝试加载Hive JDBC jar)。

希望这可以帮助!