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最近,我在一个 grails 项目中工作,并打算使用 mongodb 作为我们的 nosql 数据库,除了 mysql。

我添加了 mongodb 插件,使用域进行测试,它运行良好(显示/编辑/保存...):

compile ':mongodb:3.0.1'

并尝试使用 gmongo 插件的另一种方法,这在我想使用 mongodb 低级 API(或例如使用 mapReduce)的情况下很有用

runtime "org.mongodb:mongo-java-driver:2.11.3"
compile "org.mongodb:mongo-java-driver:2.11.3"
runtime "com.gmongo:gmongo:1.3"

尝试使用简单的查询 find() 进行测试,它也很有效

现在我想结合两种方法,这是错误:

| Error 2014-05-13 17:52:07,197 [localhost-startStop-1] ERROR plugins.DefaultGrailsPluginManager  - Error configuring dynamic methods for plugin [mongodb:3.0.1]: com/mongodb/AggregationOptions
Message: com/mongodb/AggregationOptions
    Line | Method
->> 2531 | privateGetDeclaredMethods in java.lang.Class
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
|   1855 | getDeclaredMethods        in     ''
|     46 | getLocked . . . . . . . . in org.codehaus.groovy.util.LazyReference
|     33 | get                       in     ''
|     98 | createGormStaticApi . . . in org.grails.datastore.gorm.mongo.plugin.support.MongoMethodsConfigurer
|     65 | configure                 in org.grails.datastore.gorm.plugin.support.DynamicMethodsConfigurer
|     49 | configure . . . . . . . . in org.grails.datastore.gorm.mongo.plugin.support.MongoMethodsConfigurer
|     76 | doCall                    in MongodbGrailsPlugin$_closure2
|    262 | run . . . . . . . . . . . in java.util.concurrent.FutureTask
|   1145 | runWorker                 in java.util.concurrent.ThreadPoolExecutor
|    615 | run . . . . . . . . . . . in java.util.concurrent.ThreadPoolExecutor$Worker
^    745 | run                       in java.lang.Thread
Caused by ClassNotFoundException: com.mongodb.AggregationOptions
->>  366 | run                       in java.net.URLClassLoader$1
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
|    355 | run                       in     ''
|    354 | findClass . . . . . . . . in java.net.URLClassLoader
|    425 | loadClass                 in java.lang.ClassLoader
|   2531 | privateGetDeclaredMethods in java.lang.Class
|   1855 | getDeclaredMethods        in     ''
|     46 | getLocked . . . . . . . . in org.codehaus.groovy.util.LazyReference
|     33 | get                       in     ''
|     98 | createGormStaticApi . . . in org.grails.datastore.gorm.mongo.plugin.support.MongoMethodsConfigurer
|     65 | configure                 in org.grails.datastore.gorm.plugin.support.DynamicMethodsConfigurer
|     49 | configure . . . . . . . . in org.grails.datastore.gorm.mongo.plugin.support.MongoMethodsConfigurer
|     76 | doCall                    in MongodbGrailsPlugin$_closure2
|    262 | run . . . . . . . . . . . in java.util.concurrent.FutureTask
|   1145 | runWorker                 in java.util.concurrent.ThreadPoolExecutor
|    615 | run . . . . . . . . . . . in java.util.concurrent.ThreadPoolExecutor$Worker
^    745 | run                       in java.lang.Thread

我真的不知道如何解决它!

4

1 回答 1

3

Mongodb Plugin 是 GMongo 的包装器,具有 GORM 功能的强大功能。您绝对可以直接从插件中使用 GMongo 或更低级别的 API,而不是显式添加这些依赖项。

查看包含它们的build.gradle 。该错误很可能是由于同时使用两者时的依赖关系冲突造成的。

于 2014-05-13T16:10:19.900 回答