用java连接mysql出现问题----在线等待回复

Question

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Answer 1

好像是classpath中没有你的mysql包，引起

Answer 2

呵呵，你的程序我在我的机器上编译并运行过了，没有你说的“java.lang.ClassNotFoundException: org.gjt.mm.mysql.Driver”这个问题。这个错误的意思是说找不到类，就是mysql的驱动找不到，有几种可能：1、没有驱动包，或者驱动包的版本和你代码不符合。
2、有驱动包，但是路径不对，找不到。建议修改方法：
1、改用JCREAT或者JBULIDER编译，你的编译方法可能不对，找不到驱动包。
2、不要用“mysql-connector-java-3.1.0-alpha-bin.jar”的驱动，改用2.0的驱动试试，报名“mysql-connector-java-2.0.14-bin.jar”。
3、如果编译方法没问题，你非要用3.1的驱动，就仔细看看3.1驱动包的说明，因为它的连接字符串可能不是你程序中那样的写法。我机器上用的2.0的驱动，用你的程序编译成功了。

Answer 3

大哥明示我的编译方法那里不对
你说的
我已经照做了用了2。0驱动
删除了所有系统的
classpath执行：
set classpath = F:\algorithm\JDBC\mysql-connector-java-3.1.0-alpha-bin.jar 
javac test.java
java test怎么还出错

Answer 4

javac -classpath F:\algorithm\JDBC\mysql-connector-java-3.1.0-alpha-bin.jar test.java你这样你再编译一下试试!

Answer 5

用jcreator解决问题了
用命令行就是不行哪个大哥，告诉我把

Answer 6

同意！按楼上的格式编译你的程序，但是如果你换成了2.0的驱动，就要把路径换成2.0的路径
javac -classpath F:\algorithm\JDBC\mysql-connector-java-2.0.14-bin.jar test.java

Answer 7

楼上的 newman0708(nch) 你的方法早就用过了
不行的

Answer 8

phoenix7789(火鸟) 你的也不行
我也用过了

Answer 9

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Answer 10

结账了 phoenix7789(火鸟) 20

Answer 11

怎么回事，我点击“管理”-“结账“
给了分数，然后出现什么整理FAQ，我确定后，又取消了然后现在
在贴子里面没有出现给分的情况
但是管理贴子中有，给了 phoenix7789(火鸟) 20分，且不能重新给分了
bug?