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. vue2.0 关于Vue实例的生命周期

    什么是生命周期 Vue实例有一个完整的生命周期,也就是从开始创建.初始化数据.编译模板.挂载Dom.渲染→更新→渲染.卸载等一系列过程,我们称这是Vue的生命周期.通俗说就是Vue实例从创建到销毁的过 ...

  2. display:box；display:flex；弹性盒模型

    display:box:display:flex:弹性盒模型 非常适用于移动端.PC端高级浏览器,效果也很好. display: -webkit-box; display: -moz-box; dis ...

  3. Python爬虫知识点二

    一.request库 import json import requests from io import BytesIO #显示各种函数相当于api # print(dir(requests)) u ...

  4. Java框架之Spring MVC（二）

    一.Spring MVC 验证 JSR 303 是ajvaEE6 中的一项子规范 ,叫 Bean Validation 用于对javaBean中的字段进行校验. 官方的参考实现是: Hibernate ...

  5. es7 await/async解决异步问题

    最近做项目遇到一个问题,前端调用ie浏览器中的ocx的方法去查询数据,查询完之后ocx给一个返回值,然后js将返回值当参数传入到另外的函数中去做数据处理,但是遇到一个问题是前端需要异步去执行这个过程 ...

  6. Android技术之-------电脑获取手机截图

    入吾QQ群183435019(学习 交流+唠嗑) 其实这个相当简单 应该会点ADB命令的人都会吧 一 下载一个ADB 如果你是学Android编程的,,Android SDK应该有吧,在Android ...

  7. javax.net.ssl.SSLHandshakeException: No appropriate protocol (protocol is disabled or cipher suites are inappropriate)

    前言 今天一个朋友让我帮他做一下tomcat的https配置,中间遇到了标题中这个错误,因此记录了一下过程,服务器.域名.证书.tomcat都已经准备好,就是需要配置一下即可,用的是阿里云的证书服务, ...

  8. linux 安装MySql 5.7.21 操作步骤

    一:到mysql官网下载最新的mysql包 mysql-5.7.21-linux-glibc2.12-x86_64 https://dev.mysql.com/downloads/mysql/ 二:在 ...

  9. asp.net权限认证篇外：4种认证类型比较

    1.基本认证,这是以base64加密用户口令并通过http header传输的一种认证方式,但是很容易被破解,因为base64解密没有任何难度: 如果数据被截包,会直接泄露用户口令:所以一般情况下都不 ...

  10. PostgreSQL=>递归查询

    PostgreSQL=>递归查询 转载请注明源地址:http://www.cnblogs.com/funnyzpc/p/8232073.html 距上次博客更新刚好两周,这两周发生了很多,比如: ...