java.sql.SQLException: Connections could not be acquired from the underlying database!
at com.mchange.v2.sql.SqlUtils.toSQLException(SqlUtils.java:106)
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool.checkoutPooledConnection(C3P0PooledConnectionPool.java:529)
at com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource.getConnection(AbstractPoolBackedDataSource.java:128)
at SpringHibernateTest.testDataSource(SpringHibernateTest.java:22)
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:601)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
Caused by: com.mchange.v2.resourcepool.CannotAcquireResourceException: A ResourcePool could not acquire a resource from its primary factory or source.
at com.mchange.v2.resourcepool.BasicResourcePool.awaitAvailable(BasicResourcePool.java:1319)
at com.mchange.v2.resourcepool.BasicResourcePool.prelimCheckoutResource(BasicResourcePool.java:557)
at com.mchange.v2.resourcepool.BasicResourcePool.checkoutResource(BasicResourcePool.java:477)
at com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool.checkoutPooledConnection(C3P0PooledConnectionPool.java:525)
... 25 more
 

原因是 jdbc url 错误

错误的： jdbc.jdbcUrl=jdbc:mysql://127.0.0.1:3306/spring-hibernate?useUnicode=true&characterEncoding=utf8mb4
正确的： jdbc.jdbcUrl=jdbc:mysql://127.0.0.1:3306/spring-hibernate?useUnicode=true&characterEncoding=utf8mb4

spring使用c3p0报错的更多相关文章

  1. Spring boot 启动报错 Failed to auto-configure a DataSource

    1.Spring boot 启动报错 Failed to auto-configure a DataSource 参考资料https://blog.csdn.net/liuyinfei_java/ar ...

  2. spring Boot启动报错Initialization of bean failed; nested exception is java.lang.NoSuchMethodError: org.springframework.core.annotation.AnnotatedElementUtils.getAnnotationAttributes

    spring boot 启动报错如下 org.springframework.context.ApplicationContextException: Unable to start web serv ...

  3. 解决spring boot启动报错java.lang.NoClassDefFoundError: ch/qos/logback/classic/Level

    解决spring boot启动报错java.lang.NoClassDefFoundError: ch/qos/logback/classic/Level 学习了:https://blog.csdn. ...

  4. spring整合quartz报错

    今天spring整合quartz报错,最后一步步排查,发现是和redis依赖冲突,最后redis升级了一下,问题解决. 总结:发现问题,逐一排查,如果是整合问题,报类加载不到的错误,大概率是和其他组件 ...

  5. 【原创】大叔经验分享（67）spring boot启动报错

    spring boot 启动报错: Caused by: java.lang.IllegalArgumentException: LoggerFactory is not a Logback Logg ...

  6. Spring+Hibernate4 Junit 报错No Session found for current thread

    论坛上有另外一篇更全面的帖子,jinnianshilongnian写的:http://www.iteye.com/topic/1120924 本文的环境是:  spring-framework-3.1 ...

  7. Spring+Mybatis整合报错Mapped Statements collection does not contain value原因之一

    报错如下: ### Error updating database. Cause: java.lang.IllegalArgumentException: Mapped Statements coll ...

  8. spring整合junit报错

    1.Could not autowire field: private javax.servlet.http.HttpServletRequest 参考:https://www.cnblogs.com ...

  9. spring集成shiro报错解决(no bean named 'shiroFilter' is defined)

    引言: 本人在使用spring集成shiro是总是报“no bean named 'shiroFilter' is defined”,网上的所有方式挨个试了一遍,又检查了一遍, 还是没有解决,最后,抱 ...

随机推荐

  1. Java学习笔记19---内部类之简介成员内部类、局部内部类及匿名内部类

    内部类,顾名思义,即定义在某个类内部的类,称包含该内部类的类为外部类. 从定义的位置来说,分为成员内部类和局部内部类:从类的特征来说,分为匿名内部类和静态内部类. 今天先简要介绍一下前三种内部类的定义 ...

  2. [认证授权] 6.Permission Based Access Control

    在前面5篇博客中介绍了OAuth2和OIDC(OpenId Connect),其作用是授权和认证.那么当我们得到OAuth2的Access Token或者OIDC的Id Token之后,我们的资源服务 ...

  3. 多个JDK使用批处理命令切换JDK版本

    本篇博客参考的链接 http://blog.csdn.net/hu199055/article/details/70145389 https://www.cnblogs.com/xdp-gacl/p/ ...

  4. java.lang.Class类中的某些方法

    反射的代码会经常遇到,Class类中方法真的多,且用的少,大多用在底层源码这块,既然看到了,就记录一下吧,说不定以后厉害了,自己封装框架,haha getComponentType()方法: Syst ...

  5. Android基础_web通信

    一.发展史 1G 模拟制式手机,只能进行语音通话2G 数字制式手机,增加接收数据等功能3G 智能手机,它已经成了集语音通信和多媒体通信相结合,并且包括图像.音乐.网页浏览.电话会议以及其它一些信息服务 ...

  6. .net整理

    CLR via C# 1 关于CLI,CTS,CLS,CIL,.Net Framework,CLR,FCL图 CLI:Common Language Infrastructure,是公共语言架构: C ...

  7. msf向存在漏洞的apk注入payload

    命令:msfvenom -x /路径/apk -p android/meterpreter/reverse_tcp LHOST=ip LPORT=端口 只要别人一打开这个被注入payload后的软件就 ...

  8. hackerrank 训练军队

    高阶传送魔法 在神奇的Kasukabe国家,人们努力拥有一个技能.一共有N个类型的技能,并且开始的时候拥有第 i 种技能的人有Ci个 . 这个国家有T个巫师,他们有能力将一个人的技能进行转换.每个巫师 ...

  9. Timus Online Judge：ural:1006. Square Frames

    原题链接:http://acm.timus.ru/problem.aspx?space=1&num=1006 看到题第一反应:这玩意怎么读入…… 本地的话因为是全角字符,会占两个位置,所以需要 ...

  10. HDU5131-Song Jiang's rank list HDU5135-Little Zu Chongzhi's Triangles（大佬写的）

    Song Jiang's rank list Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 512000/512000 K (Java ...