您好我想從我的Java到SQL工作平臺建立連接值以下的代碼 -非法連接的端口值「MySQL的」無法通過獲取從數據庫
MysqlDataSource dataSource = new MysqlDataSource();
dataSource.setServerName("jdbc:mysql://localhost:XXXX/Recommendation1")
dataSource.setUser("root");
dataSource.setPassword("XXXXXXXX");
dataSource.setDatabaseName("Recommendation1");
JDBCDataModel dataModel = new MySQLJDBCDataModel(dataSource);
我也包括了mysql-連接器的Java-5.0.8-bin.jar在我的lib目錄還是我收到以下錯誤
org.apache.mahout.cf.taste.common.TasteException: java.sql.SQLException: Illegal connection port value 'mysql:'
at org.apache.mahout.cf.taste.impl.model.jdbc.AbstractJDBCDataModel.getNumThings(AbstractJDBCDataModel.java:596)
at org.apache.mahout.cf.taste.impl.model.jdbc.AbstractJDBCDataModel.getNumItems(AbstractJDBCDataModel.java:552)
at org.apache.mahout.cf.taste.impl.recommender.slopeone.MemoryDiffStorage.<init>(MemoryDiffStorage.java:89)
at org.apache.mahout.cf.taste.impl.recommender.slopeone.SlopeOneRecommender.<init>(SlopeOneRecommender.java:69)
at com.HelloServlet1.doPost(HelloServlet1.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:861)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:606)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Thread.java:679)
主要是爲錯誤的原因是不列入使用mysql-connector-java的5.0.8斌.jar在項目 的lib目錄中,但在這種情況下可能是reaso ñ
感謝
我懷疑這個錯誤是否是因爲沒有在類路徑中的mysql連接,如果它沒有在那裏,你會收到,類似於MysqlDataSource的NoClassDefFounError –