我在使用 JDBC 将我的 spring mvc 应用程序连接到 postgres 数据库时遇到了很大的问题。我有这个例外：
org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: No suitable driver found for jdbc::postgresql://localhost:5432/myapp
at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:80)
at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:388)
at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:437)
at pl.jsoftworks.gymtracker.restapi.TestController.jdbc(TestController.java:36)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:215)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:132)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:781)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:721)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:83)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:943)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:877)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:966)
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:857)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:618)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:725)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:506)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:610)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:537)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1081)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:658)
at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:277)
at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2403)
at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2392)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:744)
Caused by: java.sql.SQLException: No suitable driver found for jdbc::postgresql://localhost:5432/myapp
at java.sql.DriverManager.getConnection(DriverManager.java:596)
at java.sql.DriverManager.getConnection(DriverManager.java:187)
at org.springframework.jdbc.datasource.DriverManagerDataSource.getConnectionFromDriverManager(DriverManagerDataSource.java:153)
at org.springframework.jdbc.datasource.DriverManagerDataSource.getConnectionFromDriver(DriverManagerDataSource.java:144)
at org.springframework.jdbc.datasource.AbstractDriverBasedDataSource.getConnectionFromDriver(AbstractDriverBasedDataSource.java:155)
at org.springframework.jdbc.datasource.AbstractDriverBasedDataSource.getConnection(AbstractDriverBasedDataSource.java:120)
at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:111)
at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:77)
... 42 more
我知道有很多关于这件事的话题，但非对我有用:(
我在tomcat的lib目录下得到了postgresql驱动：
Katalog: c:\apache-tomcat-8.0.14\lib
2014-11-19 22:40 <DIR> .
2014-11-19 22:40 <DIR> ..
2014-09-24 21:03 17 351 annotations-api.jar
2014-09-24 21:03 52 623 catalina-ant.jar
2014-09-24 21:03 122 569 catalina-ha.jar
2014-09-24 21:03 71 773 catalina-storeconfig.jar
2014-09-24 21:03 253 103 catalina-tribes.jar
2014-09-24 21:03 1 492 249 catalina.jar
2014-09-24 21:03 2 298 872 ecj-4.4.jar
2014-09-24 21:03 81 148 el-api.jar
2014-09-24 21:03 160 117 jasper-el.jar
2014-09-24 21:03 587 349 jasper.jar
2014-09-24 21:03 61 051 jsp-api.jar
2014-11-16 14:15 592 322 postgresql-9.3-1102-jdbc41.jar
2014-09-24 21:03 244 101 servlet-api.jar
2014-09-24 21:03 8 971 tomcat-api.jar
2014-09-24 21:03 695 816 tomcat-coyote.jar
2014-09-24 21:03 237 352 tomcat-dbcp.jar
2014-09-24 21:03 68 092 tomcat-i18n-es.jar
2014-09-24 21:03 41 480 tomcat-i18n-fr.jar
2014-09-24 21:03 43 631 tomcat-i18n-ja.jar
2014-09-24 21:03 134 172 tomcat-jdbc.jar
2014-09-24 21:03 64 952 tomcat-jni.jar
2014-09-24 21:03 54 501 tomcat-spdy.jar
2014-09-24 21:03 197 974 tomcat-util-scan.jar
2014-09-24 21:03 101 324 tomcat-util.jar
2014-09-24 21:03 198 771 tomcat-websocket.jar
2014-09-24 21:03 36 640 websocket-api.jar
我将代码添加到 tomcat conf/context.xml
<Resource name="jdbc/postgres" auth="Container"
type="javax.sql.DataSource" driverClassName="org.postgresql.Driver"
url="jdbc:postgresql://127.0.0.1:5432/myapp"
username="gtclient" password="zaqwsx" maxActive="20" maxIdle="10" maxWait="-1"/>
这进入我的 web.xml
<resource-ref>
<description>postgreSQL Datasource example</description>
<res-ref-name>jdbc/postgres</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
</resource-ref>
这是我的 servlet bean cfg：
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="org.postgresql.Driver"/>
<property name="url" value="jdbc::postgresql://localhost:5432/myapp"/>
<property name="username" value="gtclient"/>
<property name="password" value="zaqwsx"/>
</bean>
你们知道我做错了什么吗？我将不胜感激