我在使用WEKA尝试连接MySQL DB时遇到JDBC连接问题。WEKA - JDBC连接异常
这里是我的DatabaseUtils.properties文件:
jdbcDriver=com.mysql.jdbc.Driver
jdbcURL=jdbc:mysql://localhost:3306/mydb
并且我增加了JDBC-mysql的水罐里的路径:
/opt/SenchaSDKTools-2.0.0-beta3:/usr/lib/lightdm/lightdm:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/home/talha/apache-maven-3.0.4/bin:/home/talha/mysql-connector-java-5.1.20.jar:/opt/SenchaSDKTools-2.0.0-beta3:/home/talha/apache-maven-3.0.4/bin:/usr/lib/jvm/jdk1.7.0_05/bin:/home/talha/apache-maven-3.0.4/bin
的Java Class [一个简单的测试类]
public class Test {
public static void main(String[] args) throws Exception {
InstanceQuery query = new InstanceQuery();
query.setUsername("username");
query.setPassword("password");
String sql = "select * from user";
query.setQuery(sql);
// if your data is sparse, then you can say so too
// query.setSparseData(true);
Instances data = query.retrieveInstances();
}
}
完整堆栈跟踪:
Trying to add database driver (JDBC): RmiJdbc.RJDriver - Error, not in CLASSPATH?
Trying to add database driver (JDBC): jdbc.idbDriver - Error, not in CLASSPATH?
Trying to add database driver (JDBC): com.mckoi.JDBCDriver - Error, not in CLASSPATH?
Trying to add database driver (JDBC): org.hsqldb.jdbcDriver - Error, not in CLASSPATH?
Disconnected from the target VM, address: '127.0.0.1:33305', transport: 'socket'
Exception in thread "main" java.sql.SQLException: No suitable driver found for jdbc:idb=experiments.prp
at java.sql.DriverManager.getConnection(DriverManager.java:604)
at java.sql.DriverManager.getConnection(DriverManager.java:221)
at weka.experiment.DatabaseUtils.connectToDatabase(DatabaseUtils.java:521)
at weka.experiment.InstanceQuery.retrieveInstances(InstanceQuery.java:286)
at weka.experiment.InstanceQuery.retrieveInstances(InstanceQuery.java:271)
at com.tk.miner.Test.main(Test.java:22)
您是否在您的eclipse类路径中添加了jdbc-mysql jar? – Ami
我正在使用IntelliJ Idea,并将jdbc-mysql依赖项添加到我的pom.xml文件中。顺便说一下DatabaseUtils.props位于src/main/resources下。 – talha06
它为什么要加载'jdbc:idb = experiments.prp'?哦,你的'PATH'是一团糟**。 –