问题:在连接数据库时,url,用户名,密码都正确,然后报错:
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1 Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: Connections could not be acquired from the underlying database!] with root cause
2 com.mchange.v2.resourcepool.CannotAcquireResourceException: A ResourcePool could not acquire a resource from its primary factory or source.
3 at com.mchange.v2.resourcepool.BasicResourcePool.awaitAvailable(BasicResourcePool.java:1319)
4 at com.mchange.v2.resourcepool.BasicResourcePool.prelimCheckoutResource(BasicResourcePool.java:557)
5 at com.mchange.v2.resourcepool.BasicResourcePool.checkoutResource(BasicResourcePool.java:477)
6 at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool.checkoutPooledConnection(C3P0PooledConnectionPool.java:525)
7 at com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource.getConnection(AbstractPoolBackedDataSource.java:128)
8 at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:111)
9 at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:77)
10 at org.mybatis.spring.transaction.SpringManagedTransaction.openConnection(SpringManagedTransaction.java:81)
11 at org.mybatis.spring.transaction.SpringManagedTransaction.getConnection(SpringManagedTransaction.java:67)
12 at org.apache.ibatis.executor.BaseExecutor.getConnection(BaseExecutor.java:279)
13 at org.apache.ibatis.executor.SimpleExecutor.prepareStatement(SimpleExecutor.java:72)
14 at org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:59)
15 at org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:267)
16 at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:137)
17 at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:96)
18 at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:77)
19 at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:108)
20 at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:102)
21 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
22 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
23 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
24 at java.lang.reflect.Method.invoke(Method.java:601)
25 at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:358)
26 at com.sun.proxy.$Proxy9.selectList(Unknown Source)
27 at org.mybatis.spring.SqlSessionTemplate.selectList(SqlSessionTemplate.java:198)
28 at org.apache.ibatis.binding.MapperMethod.executeForMany(MapperMethod.java:119)
29 at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:63)
30 at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:52)
31 at com.sun.proxy.$Proxy10.findAllItems(Unknown Source)
32 at com.gyf.backoffice.service.impl.ItemsServiceImpl.findAllItems(ItemsServiceImpl.java:18)
33 at com.gyf.backoffice.web.controller.ItemsController.list(ItemsController.java:19)
34 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
35 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
36 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
37 at java.lang.reflect.Method.invoke(Method.java:601)
38 at org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:219)
39 at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:132)
40 at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104)
41 at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:745)
42 at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:686)
43 at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80)
44 at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:925)
45 at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856)
46 at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:917)
47 at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:813)
48 at javax.servlet.http.HttpServlet.service(HttpServlet.java:634)
49 at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:798)
50 at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
51 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
52 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
53 at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
54 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
55 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
56 at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)
57 at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
58 at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:543)
59 at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
60 at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
61 at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:688)
62 at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
63 at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
64 at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:615)
65 at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
66 at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:818)
67 at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1623)
68 at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
69 at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
70 at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
71 at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
72 at java.lang.Thread.run(Thread.java:722)
73 31-Mar-2020 16:19:59.986 INFO [localhost-startStop-2] org.apache.catalina.core.ApplicationContext.log Destroying Spring FrameworkServlet 'DispatcherServlet'
74 31-Mar-2020 16:19:59.989 INFO [localhost-startStop-2] org.apache.catalina.core.ApplicationContext.log Closing Spring root WebApplicationContext
75 31-Mar-2020 16:20:00.040 INFO [localhost-startStop-2] org.apache.catalina.core.ApplicationContext.log SessionListener: contextDestroyed()
76 31-Mar-2020 16:20:00.041 INFO [localhost-startStop-2] org.apache.catalina.core.ApplicationContext.log ContextListener: contextDestroyed()
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