如何解决尝试使用activerecord-jdbcmysql-adapter时出现“块外收益”
| 当我将应用程序部署到glassfish作为战争时，会发生这种情况： [#|2011-06-24T17:11:40.903-0500|INFO|glassfish3.1|javax.enterprise.system.container.web.com.sun.enterprise.web|_ThreadID=135;_ThreadName=Thread-1;|PWC1412: WebModule[null] ServletContext.log():/!\\ FAILSAFE /!\\ Fri Jun 24 17:11:40 -0500 2011
Status: 500 Internal Server Error
yield called out of block
/home/glassfish/glassfish/domains/domain1/applications/trainer-web/WEB-INF/gems/gems/activerecord-jdbc-adapter-1.1.2/lib/arjdbc/jdbc/connection.rb:91:in `tap\'
/home/glassfish/glassfish/domains/domain1/applications/trainer-web/WEB-INF/gems/gems/activerecord-jdbc-adapter-1.1.2/lib/arjdbc/jdbc/connection.rb:91:in `initialize\'
/home/glassfish/glassfish/domains/domain1/applications/trainer-web/WEB-INF/gems/gems/activerecord-jdbc-adapter-1.1.2/lib/arjdbc/jdbc/adapter.rb:31:in `new\'
/home/glassfish/glassfish/domains/domain1/applications/trainer-web/WEB-INF/gems/gems/activerecord-jdbc-adapter-1.1.2/lib/arjdbc/jdbc/adapter.rb:31:in `initialize\'
/home/glassfish/glassfish/domains/domain1/applications/trainer-web/WEB-INF/gems/gems/activerecord-jdbc-adapter-1.1.2/lib/arjdbc/MysqL/adapter.rb:396:in `initialize\'
/home/glassfish/glassfish/domains/domain1/applications/trainer-web/WEB-INF/gems/gems/activerecord-jdbc-adapter-1.1.2/lib/arjdbc/jdbc/connection_methods.rb:6:in `new\'
/home/glassfish/glassfish/domains/domain1/applications/trainer-web/WEB-INF/gems/gems/activerecord-jdbc-adapter-1.1.2/lib/arjdbc/jdbc/connection_methods.rb:6:in `jdbc_connection\'
/home/glassfish/glassfish/domains/domain1/applications/trainer-web/WEB-INF/gems/gems/activerecord-jdbc-adapter-1.1.2/lib/arjdbc/MysqL/connection_methods.rb:18:in `MysqL_connection\'
/home/glassfish/glassfish/domains/domain1/applications/trainer-web/WEB-INF/gems/gems/activerecord-2.3.8/lib/active_record/connection_adapters/abstract/connection_pool.rb:223:in `new_connection\'
/home/glassfish/glassfish/domains/domain1/applications/trainer-web/WEB-INF/gems/gems/activerecord-2.3.8/lib/active_record/connection_adapters/abstract/connection_pool.rb:245:in `checkout_new_connection\'
/home/glassfish/glassfish/domains/domain1/applications/trainer-web/WEB-INF/gems/gems/activerecord-2.3.8/lib/active_record/connection_adapters/abstract/connection_pool.rb:188:in `checkout\'
/home/glassfish/glassfish/domains/domain1/applications/trainer-web/WEB-INF/gems/gems/activerecord-2.3.8/lib/active_record/connection_adapters/abstract/connection_pool.rb:184:in `loop\'
/home/glassfish/glassfish/domains/domain1/applications/trainer-web/WEB-INF/gems/gems/activerecord-2.3.8/lib/active_record/connection_adapters/abstract/connection_pool.rb:184:in `checkout\'
classpath:/meta-inf/jruby.home/lib/ruby/1.8/monitor.rb:191:in `mon_synchronize\'
/home/glassfish/glassfish/domains/domain1/applications/trainer-web/WEB-INF/gems/gems/activerecord-2.3.8/lib/active_record/connection_adapters/abstract/connection_pool.rb:183:in `checkout\'
/home/glassfish/glassfish/domains/domain1/applications/trainer-web/WEB-INF/gems/gems/activerecord-2.3.8/lib/active_record/connection_adapters/abstract/connection_pool.rb:98:in `connection\'
/home/glassfish/glassfish/domains/domain1/applications/trainer-web/WEB-INF/gems/gems/activerecord-2.3.8/lib/active_record/connection_adapters/abstract/connection_pool.rb:326:in `retrieve_connection\'
/home/glassfish/glassfish/domains/domain1/applications/trainer-web/WEB-INF/gems/gems/activerecord-2.3.8/lib/active_record/connection_adapters/abstract/connection_specification.rb:123:in `retrieve_connection\'
/home/glassfish/glassfish/domains/domain1/applications/trainer-web/WEB-INF/gems/gems/activerecord-2.3.8/lib/active_record/connection_adapters/abstract/connection_specification.rb:115:in `connection\'
/home/glassfish/glassfish/domains/domain1/applications/trainer-web/WEB-INF/gems/gems/activerecord-2.3.8/lib/active_record/query_cache.rb:9:in `cache\'
/home/glassfish/glassfish/domains/domain1/applications/trainer-web/WEB-INF/gems/gems/activerecord-2.3.8/lib/active_record/query_cache.rb:28:in `call\'
/home/glassfish/glassfish/domains/domain1/applications/trainer-web/WEB-INF/gems/gems/activerecord-2.3.8/lib/active_record/connection_adapters/abstract/connection_pool.rb:361:in `call\'
/home/glassfish/glassfish/domains/domain1/applications/trainer-web/WEB-INF/gems/gems/actionpack-2.3.8/lib/action_controller/string_coercion.rb:25:in `call\'
/home/glassfish/glassfish/domains/domain1/applications/trainer-web/WEB-INF/gems/gems/rack-1.1.0/lib/rack/head.rb:9:in `call\'
/home/glassfish/glassfish/domains/domain1/applications/trainer-web/WEB-INF/gems/gems/rack-1.1.0/lib/rack/methodoverride.rb:24:in `call\'
/home/glassfish/glassfish/domains/domain1/applications/trainer-web/WEB-INF/gems/gems/actionpack-2.3.8/lib/action_controller/params_parser.rb:15:in `call\'
/home/glassfish/glassfish/domains/domain1/applications/trainer-web/WEB-INF/gems/gems/actionpack-2.3.8/lib/action_controller/session/cookie_store.rb:99:in `call\'
/home/glassfish/glassfish/domains/domain1/applications/trainer-web/WEB-INF/gems/gems/actionpack-2.3.8/lib/action_controller/failsafe.rb:26:in `call\'
/home/glassfish/glassfish/domains/domain1/applications/trainer-web/WEB-INF/gems/gems/rack-1.1.0/lib/rack/lock.rb:11:in `call\'
/home/glassfish/glassfish/domains/domain1/applications/trainer-web/WEB-INF/gems/gems/actionpack-2.3.8/lib/action_controller/dispatcher.rb:114:in `call\'
/home/glassfish/glassfish/domains/domain1/applications/trainer-web/WEB-INF/gems/gems/actionpack-2.3.8/lib/action_controller/reloader.rb:34:in `run\'
/home/glassfish/glassfish/domains/domain1/applications/trainer-web/WEB-INF/gems/gems/actionpack-2.3.8/lib/action_controller/dispatcher.rb:108:in `call\'
classpath:/rack/adapter/rails.rb:36:in `serve_rails\'
classpath:/rack/adapter/rails.rb:41:in `call\'
classpath:/jruby/rack/rails.rb:180:in `call\'
classpath:/rack/handler/servlet.rb:19:in `call\'
<script>:2
|#]
解决方法
由于出现意外的Object.tap方法行为而导致的错误，我创建了一个错误报告。
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