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我正在尝试运行 grails 应用程序并在执行 run-app 之后。

| Loading Grails 2.1.1

| Configuring classpath

Resolving [test] dependencies...

Resolving [runtime] dependencies...

| Configuring classpath.

| Environment set to development.....

| Packaging Grails application.....

| Compiling 54 source files

| Compiling 54 source files..

| Compiling 43 source files

warning: Implicitly compiled files were not subject to annotation processing.
Use -proc:none to disable annotation processing or -implicit to specify a policy for implicit compilation.
1 warning
| Compiling 43 source files.....
| Running Grails application



Cannot load JDBC driver class 'com.mysql.jdbc.Driv5r'
java.lang.ClassNotFoundException: com.mysql.jdbc.Driv5r
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
.
.
.
.


  at groovy.lang.ExpandoMetaClass.invokeMethod(ExpandoMetaClass.java:1110)
    at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:901)
    at org.codehaus.groovy.runtime.callsite.PogoMetaClassSite.callCurrent(PogoMetaClassSite.java:66)
    at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:149)
    at org.codehaus.gant.GantBinding$_initializeGantBinding_closure5_closure16.doCall(GantBinding.groovy:185)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)

为什么拼写 'com.mysql.jdbc.Driv5r' 而不是 'com.mysql.jdbc.Driver'

尝试了 grails clean Refresh Dependencies 但仍然存在相同的错误是否有任何外部方法可以添加此驱动程序类，我正在研究 GGTS。

4

2 回答 2

2

看来你是粗心了。com.mysql.jdbc.Driv5r真的。主要和明显的原因是 datasource.groovy 中 driverClassName 定义中的拼写错误。

dataSource {
    pooled = true
    driverClassName = "com.mysql.jdbc.Driv5r"
    dialect = "org.hibernate.dialect.MySQL5InnoDBDialect"
    url = dataSourceProperties.getProperty("datasource.url")
    username = dataSourceProperties.getProperty("datasource.username")
    password = dataSourceProperties.getProperty("datasource.password")
}

将driverClassName从更正com.mysql.jdbc.Driv5r为com.mysql.jdbc.Driver。

除此之外，还要确保您是否在 BuildConfig.groovy 中添加了对 mysql 的依赖项。

于 2016-06-11T07:55:23.467 回答
0

检查您正在执行此操作的代码。

Class.forName(driver);// here Check variable "driver"
 String driver="com.mysql.jdbc.Driver"; // here you might have typed "com.mysql.jdbc.Driv5r"

或者

Class.forName("com.mysql.jdbc.Driver");//here you might have typed com.mysql.jdbc.Driv5r

所有其他看起来都很好..所以这可能是原因。

于 2016-06-11T07:02:52.317 回答