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HomeDatabaseMysql Tutorialjava语言存取mysql快速构建_MySQL

By 风过留枫, 出处:dujid


环境:

操作系统: RedHat linux 7.1

mysql服务器: 3.23.36 (linux 7.1附带)
mysql jdbc: 2.0.14
java JDK: j2sdk-1.4.0_02

获取 mysql的jdbc:


mysql-connector-java-2.0.14.tar.gz

 

下载地址:


1. HKLPG/Hong Kong
2.ihostunit.com/Hong Kong
3. shellhung.org/Hong Kong

 

获取 j2sdk:

java.sun.com的j2sdk-1.4.0_02

安装 mysql jdbc:


shell> tar -zxpf mysql-connector-java-2.0.14.tar.gz

 

安装 j2sdk 这里不介绍了。

设置 CLASSPATH:


shell> CLASSPATH=$CLASSPATH:/你的mysql-jdbc驱动程序目录
/mysql-connector-java-2.0.14-bin.jar
shell> export CLASSPATH

 

在 java 中建立连接:


Class.forName("com.mysql.jdbc.Driver").newInstance();
Connection conn=DriverManager.getConnection
("jdbc:mysql://localhost/test?user=root&password=");

 

测试:

前提:你的CLASSPATH必须正确,javac和java能够正常运行。


shell> cd /你的mysql-jdbc驱动程序的目录/testsuite
shell> java DateTest

 

如果屏幕提示:


About to insert date 1017684000000
Inserted row 1
Selected date from row 1: 1017684000808
1974-01-01
1974-01-01

 

即一切正常。

异常:

当运行 DateTest 时屏幕提示 “Server configuration denies access to data source”

解决方法:

首先进入 mysql 并以 root 登陆,随后输入如下内容。


mysql> GRANT ALL PRIVILEGES ON [dbname].* to ′[user]′@′[hostname]′
identified by ′[password]′;

 

(注意:这里将 dbname 替换成你的数据库名称,在 DateTest 中是 test;将 user 替换成你的用户名,笔者的是 root;将 hostname 替换成 java 程序运行时所在的机器,笔者是在本机运行,即为′localhost′;将 password 替换成你mysql中用户的密码,笔者的没有密码,即为′′。)


mysql> FLUSH PRIVILEGES

 

有什么问题欢迎来信联系我,dujid ronyou@baoji.gov.cn

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