Java连接Mysql数据库,如何获取所有的数据库名

发布网友发布时间：2022-04-08 20:13

共2个回答

懂视网时间：2022-04-09 00:34

在默认下，MySQL在use databasename的时候，是不显示连接的库名！

mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| hank |
| mysql |
| performance_schema |
| sakila |
| test |
| yoon |
+--------------------+
7 rows in set (0.00 sec)

mysql> use yoon;
Database changed
mysql>

可通过以下方式，实现显示连接的数据库名：
[root@hank-yoon tmp]# mysql --prompt="u(d) >"

Welcome to the MySQL monitor. Commands end with ; or g.
Your MySQL connection id is 29
Server version: 5.6.26-log Source distribution

Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type ‘help;‘ or ‘h‘ for help. Type ‘c‘ to clear the current input statement.

root((none)) >use yoon;
Database changed
root(yoon) >

如果想显示连接的库名和时间：
[root@hank-yoon tmp]# mysql --prompt="u(d) R:m:s >"

Welcome to the MySQL monitor. Commands end with ; or g.
Your MySQL connection id is 30
Server version: 5.6.26-log Source distribution

Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type ‘help;‘ or ‘h‘ for help. Type ‘c‘ to clear the current input statement.

root((none)) 15:20:08 >use yoon
Database changed
root(yoon) 15:20:16 >

也可以添加在my.cnf配置文件中，但是需要重启DB，生产库的话，可不是随便能重启，因此在连接的时候加上即可！
[mysql]
default-character-set = utf8
prompt = \u(\d) \R:\m:\s >

MySQL显示连接的数据库名

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热心网友时间：2022-04-08 21:42

Java连接Mysql数据库，如何获取所有的数据库名
查询mysql中所有数据库名称
一，这种方法像执行普通的SQL语句一下，sql如下：
SELECT `SCHEMA_NAME`
FROM `information_schema`.`SCHEMATA`
二，
List<String> list=new ArrayList<String>();
//String sql="SELECT SCHEMA_NAME FROM information_schema.SCHEMATA";
try{
//Statement st=(Statement) conn.createStatement();
DatabaseMetaData dmd=(DatabaseMetaData) conn.getMetaData();
ResultSet rs=dmd.getCatalogs();
while(rs.next()){