我想使用jdbc连接到mysql数据库,但发生异常。任何人都可以帮我吗?谢谢!驱动程序版本是6.0.6,而mysql db版本是5.7.18。JDBC无法连接到mysql
它似乎错误是由ArrayIndexOutOfBoundsException引起的,但我真的不知道它!
代码:
package test;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
public class Test {
@org.junit.jupiter.api.Test
public void test(){
try {
Class.forName("com.mysql.jdbc.Driver");
Connection connection = DriverManager.getConnection("jdbc:mysql://localhost:3306/test", "root", "admin");
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (SQLException e) {
e.printStackTrace();
}
}
}
栈
java.sql.SQLNonTransientConnectionException: Could not create connection to database server.
at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:526)
at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:513)
at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:505)
at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:479)
at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:1779)
at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:1596)
at com.mysql.cj.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:633)
at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:347)
at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:219)
at java.sql.DriverManager.getConnection(DriverManager.java:664)
at java.sql.DriverManager.getConnection(DriverManager.java:247)
at test.Test.test(Test.java:13)
Caused by: java.lang.ArrayIndexOutOfBoundsException: 39
at com.mysql.cj.mysqla.io.Buffer.readInteger(Buffer.java:271)
at com.mysql.cj.mysqla.io.MysqlaCapabilities.setInitialHandshakePacket(MysqlaCapabilities.java:62)
at com.mysql.cj.mysqla.io.MysqlaProtocol.readServerCapabilities(MysqlaProtocol.java:482)
at com.mysql.cj.mysqla.io.MysqlaProtocol.beforeHandshake(MysqlaProtocol.java:367)
at com.mysql.cj.mysqla.io.MysqlaProtocol.connect(MysqlaProtocol.java:1412)
at com.mysql.cj.mysqla.MysqlaSession.connect(MysqlaSession.java:132)
at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:1726)
... 36 more
检查列表:您的连接字符串:服务器,用户名,密码,端口,JDBC驱动程序的IP。 –
[jdbc:无法创建与数据库服务器的连接]的可能重复(https://stackoverflow.com/questions/41637604/jdbc-could-not-create-connection-to-database-server) – aurelius
MySQL Connector/J 6.x仍在开发中,因此不稳定,也许你应该使用5.1.42。 –