数据库|mysql教程
mysql
eclipse连接mysql
java
数据库-mysql教程
mysqleclipse连接mysqljava
个人发帖网站源码,ubuntu 调出后台进程,tomcat是否打开网页,爬虫逆向课程,php的mysql命令,大悟县seo关键词优化推广lzw
用的是mysql 5.6 以前用JDBC连接上过的，但是现在就不行了，不清楚原因，也在网上找过，但是找不到解决的办法，连接的JAR包是mysql-connector-java-5.1.26-bin.jar，请知道的大神解答一下小弟
超级同城源码下载,xmr挖矿软件ubuntu,tomcat管理控制台使用,爬虫交互式,怎么在php里插入css样式,辽宁谷歌seolzw
这是使用JDBC连接MYSQL
5173游戏平台源码,vscode前端常用的设置,ubuntu 建账户,tomcat遇到错误重启,反爬虫收入,php 多语言cms,外贸网店专业词汇seo,在线交易网站源码,咨询语言模板lzw
import java.sql.*;
public class TestMysqlConnection {
public static void main (String[] args) {
Connection conn = null;
try {
Class.forName(“com.mysql.jdbc.Driver”);
conn = DriverManager.getConnection(“jdbc:mysql://localhost/bbs”,”root”,”82215378″);
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (SQLException e) {
e.printStackTrace();
} finally {
try {
if(conn != null) {
conn.close();
conn = null;
}
} catch (SQLException e) {
e.printStackTrace();
}
}
}
错误如下：
com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Communication link failure, message from server: “Can’t get hostname for your address”
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:411)
at com.mysql.jdbc.Util.getInstance(Util.java:386)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1015)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:989)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:975)
at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1112)
at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2486)
at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2519)
at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2304)
at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:834)
at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:47)
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:411)
at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416)
at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:346)
at java.sql.DriverManager.getConnection(Unknown Source)
at java.sql.DriverManager.getConnection(Unknown Source)
at TestMysqlConnection.main(TestMysqlConnection.java:8)
