Grails के साथ पोस्टग्रेज़ डेटाबेस को कैसे कनेक्ट करें 2.3.4

Question

मैं Grails के लिए नया हूँ। मैं postgresql 9.0 डेटाबेस सर्वर को grails 2.3.4 के साथ कनेक्ट करने का प्रयास कर रहा हूं। मैंने postgresql-9.0-801.jdbc3.jar फ़ाइल को grails एप्लिकेशन के lib फ़ोल्डर में जोड़ा है। जब मैं इंटेलिज संपादक पर एप्लिकेशन चला रहा हूं तो निम्न त्रुटि प्राप्त कर रहा हूं। जहां मैं गलत कर रहा हूं?

|Running Grails application Error | 2013-12-08 18:44:55,837 [localhost-startStop-1] ERROR pool.ConnectionPool - Unable to create initial connections of pool. Message: Driver:org.postgresql.Driver@7c3b99 returned null for URL:jdbc:postgres://localhost/clientpro Line | Method ->> 303 | innerRun in java.util.concurrent.FutureTask$Sync 
| 138 | run in java.util.concurrent.FutureTask | 895 | runTask in java.util.concurrent.ThreadPoolExecutor$Worker | 918 | run in ''^662 | run . . in java.lang.Thread Error | 2013-12-08 18:44:55,877 [localhost-startStop-1] ERROR pool.ConnectionPool - Unable to create initial connections of pool. Message: Driver:org.postgresql.Driver@1ab5d6d returned null for URL:jdbc:postgres://localhost/clientpro Line | Method ->> 303 | innerRun in java.util.concurrent.FutureTask$Sync 
| 138 | run in java.util.concurrent.FutureTask | 895 | runTask in java.util.concurrent.ThreadPoolExecutor$Worker | 918 | run in ''^662 | run . . in java.lang.Thread Error | 2013-12-08 18:44:56,160 [localhost-startStop-1] ERROR pool.ConnectionPool - Unable to create initial connections of pool. Message: Driver:org.postgresql.Driver@6bf551 returned null for URL:jdbc:postgres://localhost/clientpro Line | Method ->> 303 | innerRun in java.util.concurrent.FutureTask$Sync 
| 138 | run in java.util.concurrent.FutureTask | 895 | runTask in java.util.concurrent.ThreadPoolExecutor$Worker | 918 | run in ''^662 | run . . in java.lang.Thread Error | 2013-12-08 18:44:56,174 [localhost-startStop-1] ERROR context.GrailsContextLoader - Error initializing the application: Error creating bean with name 'transactionManagerPostProcessor': Initialization of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'transactionManager': Cannot resolve reference to bean 'sessionFactory' while setting bean property 'sessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory': Cannot resolve reference to bean 'lobHandlerDetector' while setting bean property 'lobHandler'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'lobHandlerDetector': Invocation of init method failed; nested exception is org.springframework.jdbc.support.MetaDataAccessException: Error while extracting DatabaseMetaData; nested exception is java.sql.SQLException: Driver:org.postgresql.Driver@6bf551 returned null for URL:jdbc:postgres://localhost/clientpro Message: Error creating bean with name 'transactionManagerPostProcessor': Initialization of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'transactionManager': Cannot resolve reference to bean 'sessionFactory' while setting bean property 'sessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory': Cannot resolve reference to bean 'lobHandlerDetector' while setting bean property 'lobHandler'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'lobHandlerDetector': Invocation of init method failed; nested exception is org.springframework.jdbc.support.MetaDataAccessException: Error while extracting DatabaseMetaData; nested exception is java.sql.SQLException: Driver:org.postgresql.Driver@6bf551 returned null for URL:jdbc:postgres://localhost/clientpro Line | Method ->> 303 | innerRun in java.util.concurrent.FutureTask$Sync 
| 138 | run in java.util.concurrent.FutureTask | 895 | runTask in java.util.concurrent.ThreadPoolExecutor$Worker | 918 | run in ''^662 | run . . in java.lang.Thread Caused by BeanCreationException: Error creating bean with name 'transactionManager': Cannot resolve reference to bean 'sessionFactory' while setting bean property 'sessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory': Cannot resolve reference to bean 'lobHandlerDetector' while setting bean property 'lobHandler'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'lobHandlerDetector': Invocation of init method failed; nested exception is org.springframework.jdbc.support.MetaDataAccessException: Error while extracting DatabaseMetaData; nested exception is java.sql.SQLException: Driver:org.postgresql.Driver@6bf551 returned null for URL:jdbc:postgres://localhost/clientpro ->> 303 | innerRun in java.util.concurrent.FutureTask$Sync 
| 138 | run in java.util.concurrent.FutureTask | 895 | runTask in java.util.concurrent.ThreadPoolExecutor$Worker | 918 | run in ''^662 | run . . in java.lang.Thread Caused by BeanCreationException: Error creating bean with name 'sessionFactory': Cannot resolve reference to bean 'lobHandlerDetector' while setting bean property 'lobHandler'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'lobHandlerDetector': Invocation of init method failed; nested exception is org.springframework.jdbc.support.MetaDataAccessException: Error while extracting DatabaseMetaData; nested exception is java.sql.SQLException: Driver:org.postgresql.Driver@6bf551 returned null for URL:jdbc:postgres://localhost/clientpro ->> 303 | innerRun in java.util.concurrent.FutureTask$Sync 
| 138 | run in java.util.concurrent.FutureTask | 895 | runTask in java.util.concurrent.ThreadPoolExecutor$Worker | 918 | run in ''^662 | run . . in java.lang.Thread Caused by BeanCreationException: Error creating bean with name 'lobHandlerDetector': Invocation of init method failed; nested exception is org.springframework.jdbc.support.MetaDataAccessException: Error while extracting DatabaseMetaData; nested exception is java.sql.SQLException: Driver:org.postgresql.Driver@6bf551 returned null for URL:jdbc:postgres://localhost/clientpro ->> 303 | innerRun in java.util.concurrent.FutureTask$Sync 
| 138 | run in java.util.concurrent.FutureTask | 895 | runTask in java.util.concurrent.ThreadPoolExecutor$Worker | 918 | run in ''^662 | run . . in java.lang.Thread Caused by MetaDataAccessException: Error while extracting DatabaseMetaData; nested exception is java.sql.SQLException: Driver:org.postgresql.Driver@6bf551 returned null for URL:jdbc:postgres://localhost/clientpro ->> 303 | innerRun in java.util.concurrent.FutureTask$Sync 
| 138 | run in java.util.concurrent.FutureTask | 895 | runTask in java.util.concurrent.ThreadPoolExecutor$Worker | 918 | run in ''^662 | run . . in java.lang.Thread Caused by SQLException: Driver:org.postgresql.Driver@6bf551 returned null for URL:jdbc:postgres://localhost/clientpro ->> 303 | innerRun in java.util.concurrent.FutureTask$Sync 
| 138 | run in java.util.concurrent.FutureTask | 895 | runTask in java.util.concurrent.ThreadPoolExecutor$Worker | 918 | run in ''^662 | run . . in java.lang.Thread Error | Forked Grails VM exited with error Process finished with exit code 1 

डेटा स्रोत फ़ाइल: -

dataSource { 
    pooled = true 
    driverClassName = "org.postgresql.Driver" 
    dialect = org.hibernate.dialect.PostgreSQLDialect 
    username = "postgres" 
    password = "password" 
} 
hibernate { 
    cache.use_second_level_cache = true 
    cache.use_query_cache = true 
    cache.provider_class='org.hibernate.cache.EhCacheProvider' 
} 
// environment specific settings 
environments { 
    development { 
     dataSource { 
     dbCreate = "update" 
     url = "jdbc:postgres://localhost/clientpro" 
     username = "postgres" 
     password = "password" 
     } 
    } 
    test { 
     dataSource { 
     dbCreate = "update" 
     url = "jdbc:postgres://localhost/clientpro" 
     username = "postgres" 
     password = "password" 
     } 
    } 
    production { 
     dataSource { 
     dbCreate = "update" 
     url = "jdbc:postgres://localhost/clientpro" 
     username = "postgres" 
     password = "password" 
     } 
    } 
} 

Answer 1

एक अलग उपसर्ग के साथ प्रयास करें:

url = "jdbc:postgresql://localhost/clientpro"