dbcp获取的connection关闭时报错

Question

六月 24, 2017 12:50:34 下午 org.apache.catalina.core.StandardWrapperValve invoke
严重: Servlet.service() for servlet [springmvc] in context with path [/hf_1] threw exception [Request processing failed; nested exception is java.lang.IllegalStateException: Pool not open] with root cause
java.lang.IllegalStateException: Pool not open
at org.apache.commons.pool.BaseObjectPool.assertOpen(BaseObjectPool.java:78)
at org.apache.commons.pool.impl.GenericObjectPool.returnObject(GenericObjectPool.java:916)
at org.apache.commons.dbcp.PoolableConnection.close(PoolableConnection.java:87)
at org.apache.commons.dbcp.PoolingDataSource$PoolGuardConnectionWrapper.close(PoolingDataSource.java:181)
at com.neuedu.attendance.dao.BaseDao.myClose(BaseDao.java:378)
at com.neuedu.attendance.dao.BaseDao.query(BaseDao.java:151)
at com.neuedu.attendance.login.controller.LoginController.login(LoginController.java:44)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:221)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:136)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:114)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:827)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:738)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:963)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:897)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:872)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:650)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:218)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:956)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:442)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1082)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:623)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Unknown Source)

以上是异常，自己写的数据库操作，没用框架，只用了Spring

private void init(){

    AbstractApplicationContext ctx = new ClassPathXmlApplicationContext("../config/spring/applicationContext.xml");  
    DataSource ds = (DataSource)ctx.getBean("dataSource");   


    try {

        con =ds.getConnection(); 

    } catch (SQLException e) {

        e.printStackTrace();
    }finally{
        ctx.close();


    }
}

然后是数据库操作，我做了一个查询，没有问题。但是到最后想关闭connection时候报错 的 调用 con.close();

dataresourse用的是org.apache.commons.dbcp.BasicDataSource


配置文件为

<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
    destroy-method="close" > 

    <property name="driverClassName" value="${jdbc.driver}" />
    <property name="url" value="${jdbc.url}" />
    <property name="username" value="${jdbc.username}" />
    <property name="password" value="${jdbc.password}" />

    <property name="maxActive" value="${dbcp.maxActive}" />  
    <property name="maxIdle" value="${dbcp.maxIdle}" />  
    <property name="defaultAutoCommit" value="${dbcp.defaultAutoCommit}" />  

    <property name="timeBetweenEvictionRunsMillis" value="3600000" />  
    <property name="minEvictableIdleTimeMillis" value="3600000" />  
</bean>



求解，，自己瞎写的哈哈

Answer 1

以下回答参考 皆我百晓生、券券喵儿 等免费微信小程序相关内容作答，并由本人整理回复。

根据您提供的错误信息，似乎在调用con.close()时遇到了问题。这可能是由于以下原因导致的：

1. 数据源连接未关闭：首先检查数据源是否已经关闭。

try {
    // 关闭数据源连接
    dataSource.getConnection().close();
} catch (SQLException e) {
    e.printStackTrace();
}

1. SQL注入攻击：如果您的应用程序存在SQL注入漏洞，请确保您的应用已正确处理SQL语句，并且不会将恶意输入传递给数据库服务器。

2. 检查连接池状态：确保您的连接池（在此情况下是BasicDataSource）的状态正常。例如，maxActive、maxIdle和defaultAutoCommit属性应该设置得当。

3. 数据库连接超时：检查是否存在连接超时的问题。在某些情况下，数据库可能无法及时响应连接请求，从而导致断开连接的情况。

为了更准确地定位问题，您可以尝试使用一些调试工具来查看详细日志或堆栈跟踪信息。例如，可以使用jconsole工具查看数据库连接状态，或者使用JDBC Driver Manager来查看SQL执行情况。

另外，如果您正在使用Spring Boot框架，请考虑使用@Transactional注解来自动管理事务，以避免因数据库操作引起的错误。此外，确保遵循最佳实践，如对敏感数据进行加密存储等，以防止SQL注入和其他类型的安全风险。