Java 为什么我无法获得 org.h2.Driver？我用 Maven
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Why I can't get the org.h2.Driver? I use maven
提问by joker
I face a problem about connecting to H2
我在连接 H2 时遇到问题
this is my pom.xml:
这是我的 pom.xml：
<project>
<modelVersion>4.0.0</modelVersion>
<groupId>.</groupId>
<artifactId>dbConnection</artifactId>
<name>Db Connection</name>
<packaging>war</packaging>
<version>0.1</version>
<dependencies>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<version>1.3.176</version>
</dependency>
</dependencies>
</project>
and this is my main code
这是我的主要代码
import java.sql.*;
public class DbConnection
{
static final String DB_URL = "jdbc:h2:tcp://localhost/~/test;AUTO_SERVER=TRUE";
public static void main(String[] args) throws Exception
{
try
{
Class.forName("org.h2.Driver");
Connection conn = DriverManager.getConnection(DB_URL,"sa","");
conn.close();
}
catch(ClassNotFoundException ex)
{
System.out.println( "ERROR: Class not found: " + ex.getMessage());
}
}
}
is always show up that Class not found:org.h2.Driver
总是显示 Class not found:org.h2.Driver
回答by Marko Jurisic
You should set scope to runtime so that h2 driver is packaged in your war file:
您应该将范围设置为运行时，以便将 h2 驱动程序打包到您的 war 文件中：
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<version>1.4.190</version>
<scope>runtime</scope>
</dependency>
回答by Vitalii
I had the same problem with IntelliJ, it could not found org.h2.Driver. I tried several solutions from web but after simple restart of IntelliJ the problem was solved.
我在 IntelliJ 上遇到了同样的问题，它找不到org.h2.Driver. 我从网络上尝试了几种解决方案，但在简单重启 IntelliJ 后问题就解决了。
Hope this helps to save some time.
希望这有助于节省一些时间。
回答by mikelus
Found the answer here remove the runtime scope
在这里找到答案删除运行时范围
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
#removed this -> <scope>test</scope> #
</dependency>
回答by burtsevyg
My problem was in "" in docker-compose.yaml environment variables:
我的问题出在 docker-compose.yaml 环境变量中的“”中：
SPRING_DATASOURCE_DRIVER-CLASS-NAME="org.h2.Driver"- it does not work
SPRING_DATASOURCE_DRIVER-CLASS-NAME=org.h2.Driver- it work
SPRING_DATASOURCE_DRIVER-CLASS-NAME="org.h2.Driver"- 它不起作用
SPRING_DATASOURCE_DRIVER-CLASS-NAME=org.h2.Driver- 它起作用
回答by Sidharth K.Burnwal
I have read all the answers available and tried all of them. I am not sure which one worked but yes, It worked at last. So, try one of these or all but it will solve your problem.
我已经阅读了所有可用的答案并尝试了所有答案。我不确定哪个有效，但是是的，它终于奏效了。因此，请尝试其中一种或全部，但它会解决您的问题。
- Remove the scope tag from your dependency first. It will look like
- 首先从您的依赖项中删除范围标记。它看起来像
<scope>test</scope>or
<scope>runtime</scope>
<scope>test</scope>或者
<scope>runtime</scope>
- There might be some issues with versioning.Mine working with this
- 版本控制可能存在一些问题。我正在处理这个问题
<version>1.4.190</version>
<version>1.4.190</version>
you can also try these
你也可以试试这些
<version>1.4.192</version>
<version>1.4.195</version>
<version>1.4.197</version>
- Restart a few times might also help. I did for 2-3 times.
- 重新启动几次也可能有帮助。我做了2-3次。
Finally, my dependency looks like the below code.
最后，我的依赖看起来像下面的代码。
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<version>1.4.190</version>
</dependency>
