代码:
Class.forName("org.gjt.mm.mysql.Driver").newInstance();
String strUrl = "jdbc:mysql://localhost/admin";
conn = DriverManager.getConnection(strUrl, "root", "");
改成这样也不行
Class.forName("com.mysql.jdbc.Driver").newInstance();
我是别人机子上运行可以的工程copy过来但在我机子上运行就出异常了
各位大哥大姐帮看看啊~~~~
Class.forName("org.gjt.mm.mysql.Driver").newInstance();
String strUrl = "jdbc:mysql://localhost/admin";
conn = DriverManager.getConnection(strUrl, "root", "");
改成这样也不行
Class.forName("com.mysql.jdbc.Driver").newInstance();
我是别人机子上运行可以的工程copy过来但在我机子上运行就出异常了
各位大哥大姐帮看看啊~~~~
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:164)
at root.test.TestMySql.LoadDriver(TestMySql.java:26)
at root.test.TestMySql.TestRs(TestMySql.java:42)
at root.test.TestMySql.main(TestMySql.java:20)zh3314()
驱动导了~~~
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;import java.sql.SQLException;
import java.sql.Statement;public class TestMySql {
public TestMySql() {
} public static void main(String[] args) {
TestRs();
} private static Connection LoadDriver() {
Connection conn = null;
try {
Class.forName("com.mysql.jdbc.Driver").newInstance();
String strUrl = "jdbc:mysql://localhost/admin";
conn = DriverManager.getConnection(strUrl, "root", ""); }
catch (Exception ex) {
// handle any errors
System.out.println("SQLException: " + ex.getMessage());
}
return conn;
} private static void TestRs() {
Statement stmt = null;
ResultSet rs = null;
try {
stmt = LoadDriver().createStatement();
rs = stmt.executeQuery("SELECT * FROM test");
while (rs.next()) {
System.err.println("sys_id" + rs.getString("sys_id"));
System.err.println("sys_date" + rs.getString("sys_date"));
System.err.println("testname" + rs.getString("testname"));
} }
catch (Exception ex) { }
finally { if (rs != null) {
try {
rs.close();
}
catch (SQLException sqlEx) { // ignore } rs = null;
} if (stmt != null) {
try {
stmt.close();
}
catch (SQLException sqlEx) { // ignore } stmt = null;
}
} }
}
}
}
jdbc:mysql://localhost:3306/lyu
org/aspectj/lang/Signature
我搜索了所有包都没有找到Signature这个类或目录zzxiaoma(小马) ( ) 信誉:100 Blog
连接MySQL怎么打补丁
Class.forName("com.mysql.jdbc.Driver").newInstance();
这段就出错了
也就是说你在别人的机器里可以用,然后在你机器里,那个包所在路径就不对了
你需要重新在你的机器里导入驱动包
抛出的这个就没找着了~~~org/aspectj/lang/Signature我把工程传到这上面你们帮我看看吧
http://567853.ys168.com
小弟在这先谢谢各位啦~~~