JDBC 连接MySQL 问题

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2008-06-24 08:57:05

今jin天tian用yongmm.mysql-2.0.4-bin.jar连lian接jiemysql，报bao错cuo如ru下xia：

Communication failure during handshake. Is there a server running on localhost:3306?

我wo的deMysql数shu据ju库ku的de版ban本ben：5.0.18。使shi用yongmm.mysql-2.0.4-bin.jar，。出chu现xian了le上shang面mian的de问wen题ti。mysql服fu务wu是shi开kai的de，有you可ke能neng是shi驱qu动dong不bu行xing了le，上shangmysql下xia载zai了le个ge对dui应ying5.0的de版ban本ben：mysql-connector-java-5.0.8-bin.jar ，再zai连lian接jie，ok，没mei有you出chu错cuo。

drivers=org.gjt.mm.mysql.Driver poolapp.url=jdbc:mysql://localhost/test?user=root&password=ffcsoss&useUnicode=true&characterEncoding=8859_1

ysql网wang站zhan上shang的de说shuo明ming：

MySQL Connector/J is a JDBC Type 4 driver. Different versions are available that are compatible with the JDBC-3.0 and JDBC-4.0 specifications. The Type 4 designation means that the driver is pure-Java implementation of the MySQL protocol and does not rely on the MySQL client libraries.

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今天用mm.mysql-2.0.4-bin.jar连接mysql，报错如下： Communication failure during handshake. Is there a server running on localhost:3306? 我的Mysql数据库的版本：5.0.18。使用mm.mysql-2.0.4-bin.jar，。出现了上面的问题。mysql服务是开的，有可能是驱动不行了，上mysql下载了个对应5.0的版本：mysql-connector-java-5.0.8-bin.jar ，再连接，ok，没有出错。 drivers=org.gjt.mm.mysql.Driver poolapp.url=jdbc:mysql://localhost/test?user=root&password=ffcsoss&useUnicode=true&characterEncoding=8859_1 ysql网站上的说明： MySQL Connector/J is a JDBC Type 4 driver. Different versions are available that are compatible with the JDBC-3.0 and JDBC-4.0 specifications. The Type 4 designation means that the driver is pure-Java implementation of the MySQL protocol and does not rely on the MySQL client libraries.

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