六金 2015-09-30 03:17 采纳率: 0%
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JDBC连接不到Mysql数据库

使用JDBC的方法连接不上MySQL,想自己做个练习,然后就出现了一下的错误,希望各位哥哥姐姐帮忙看下!谢谢

Connection connection = null;
PreparedStatement preparedStatement = null;
ResultSet resultSet = null;
try
{
Class.forName("com.mysql.jdbc.Driver");
connection = DriverManager.getConnection("jdbc:mysql://localhost:3306/mybatis?characterEncoding=utf-8", "root", "user_xin");
}
catch (Exception e) {
e.printStackTrace();
if (resultSet != null) {
try {
resultSet.close();
}
catch (SQLException e1) {
e1.printStackTrace();
}
}
if (preparedStatement != null) {
try {
preparedStatement.close();
}
catch (SQLException e1) {
e1.printStackTrace();
}
}
if (connection != null)
try {
connection.close();
}
catch (SQLException e1) {
e1.printStackTrace();
}
}
finally
{
if (resultSet != null) {
try {
resultSet.close();
}
catch (SQLException e) {
e.printStackTrace();
}
}
if (preparedStatement != null) {
try {
preparedStatement.close();
}
catch (SQLException e) {
e.printStackTrace();
}
}
if (connection != null)
try {
connection.close();
}
catch (SQLException e) {
e.printStackTrace();
}
}

报错如下
com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'mybatis'
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
at com.mysql.jdbc.Util.getInstance(Util.java:381)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1030)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3515)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3447)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:911)
at com.mysql.jdbc.MysqlIO.secureAuth411(MysqlIO.java:3953)
at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1276)
at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2048)
at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:723)
at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:46)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:302)
at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:282)
at java.sql.DriverManager.getConnection(Unknown Source)
at java.sql.DriverManager.getConnection(Unknown Source)
at cn.itcast.mybatis.Test.main(Test.java:17)
  • 写回答

11条回答 默认 最新

  • AugustLeo_cheng 2015-09-30 03:20
    关注

    Unknown database 'mybatis' 数据库名字错了

    评论

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