Default: com.mchange.v2.c3p0.impl.DefaultConnectionTester--> root 在Hibernate(spring管理)中的配置: <bean id="dataSource" class="com.<em>mchange</em>.v2
######################################################################## #c3p0 log4j.category.com.mchange.v2....log.log4j.Log4jMLog=OFF,A1 log4j.category.com.mchange.v2.log.log4j.Log4jMLog=SEVERE,A1 log4j.category.com.mchange.v2....log.log4j.Log4jMLog=WARNING,A1 log4j.category.com.mchange.v2.log.log4j.Log4jMLog=INFO,A2 log4j.category.com.mchange.v2....log.log4j.Log4jMLog=CONFIG,A2 log4j.category.com.mchange.v2.log.log4j.Log4jMLog=FINE,A2 log4j.category.com.mchange.v2....log.log4j.Log4jMLog=FINER,A2 log4j.category.com.mchange.v2.log.log4j.Log4jMLog=FINEST,A2 log4j.category.com.mchange.v2
at com.mchange.v2.sql.SqlUtils.toSQLException(SqlUtils.java:106) at com.mchange.v2.sql.SqlUtils.toSQLException...a resource from com.mchange.v2.resourcepool.BasicResourcePool@a0e5175 -- timeout at awaitAvailable()...at com.mchange.v2.resourcepool.BasicResourcePool.awaitAvailable(BasicResourcePool.java:1317) at com.mchange.v2....resourcepool.BasicResourcePool.prelimCheckoutResource(BasicResourcePool.java:557) at com.mchange.v2....resourcepool.BasicResourcePool.prelimCheckoutResource(BasicResourcePool.java:590) at com.mchange.v2
连接的实际类型 我在本地debug了下,发现获取连接时,代码如下: com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource#getConnection...$AcquireTask@b451b27 (com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread-#0) com.mchange.v2...$PoolThread-#1) com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask@684ae5d5 (com.mchange.v2....$AcquireTask@d373871 com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask@245a897e com.mchange.v2...:1014) com.mchange.v2.resourcepool.BasicResourcePool.access$800(BasicResourcePool.java:32) com.mchange.v2
.sql.SqlUtils.toSQLException(SqlUtils.java:106) com.mchange.v2.sql.SqlUtils.toSQLException(SqlUtils.java...root cause com.mchange.v2.resourcepool.TimeoutException: A client timed out while waiting to acquire ...a resource from com.mchange.v2.resourcepool.BasicResourcePool@6df3d083 -- timeout at awaitAvailable()...com.mchange.v2.resourcepool.BasicResourcePool.awaitAvailable(BasicResourcePool.java:1317) com.mchange.v2...(BasicResourcePool.java:477) com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool.checkoutPooledConnection
-- https://mvnrepository.com/artifact/com.mchange/c3p0 --> 45 46 com.mchange 47 c3p0 48 0.9.5.2</...back to default profiles: default 11 2020-11-15 11:17:01.885 INFO 4908 --- [g-Init-Reporter] com.mchange.v2...MLog clients using slf4j logging. 12 2020-11-15 11:17:02.796 INFO 4908 --- [ main] com.mchange.v2...>com.mchange 47 c3p0 48 0.9.5.2</
.c3p0.DriverManagerDataSource.ensureDriverLoaded(DriverManagerDataSource.java:100) 7 at com.mchange.v2....c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:132) 8 at com.mchange.v2...$800(BasicResourcePool.java:32) 13 at com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask.run....c3p0.DriverManagerDataSource.driver(DriverManagerDataSource.java:223) 19 at com.mchange.v2.c3p0...126 at com.mchange.v2.sql.SqlUtils.toSQLException(SqlUtils.java:106) 127 at com.mchange.v2.c3p0
-0] DEBUG c.m.v.resourcepool.BasicResourcePool - incremented pending_acquires: 1 10:22:25.962 [com.mchange.v2...PoolThread-#2] DEBUG c.m.v.c.i.C3P0PooledConnectionPool - Preparing to destroy PooledConnection: com.mchange.v2....c3p0.impl.NewPooledConnection@3c508c99 10:22:25.963 [com.mchange.v2.async.ThreadPoolAsynchronousRunner...$PoolThread-#2] DEBUG c.m.v2.c3p0.impl.NewPooledConnection - com.mchange.v2.c3p0.impl.NewPooledConnection....c3p0.impl.NewPooledConnection@3c508c99 10:22:25.963 [com.mchange.v2.async.ThreadPoolAsynchronousRunner
http://www.mchange.com/projects/c3p0/ c3p0的配置参数preferredTestQuery用于检测数据库连接测试,检测数据库是否能连接成功。...,跟踪源码发现,其继承关系如下: - com.mchange.v2.c3p0.ConnectionTester - com.mchange.v2.c3p0.QueryConnectionTester...- com.mchange.v2.c3p0.FullQueryConnectionTester - com.mchange.v2.c3p0.UnifiedConnectionTester...- com.mchange.v2.c3p0.AbstractConnectionTester - com.mchange.v2...com.mchange.v2.c3p0.impl.DefaultConnectionTester定义如下方法: public int activeCheckConnection(Connection c
357) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:264) at com.mchange.v2....c3p0.DriverManagerDataSource.ensureDriverLoaded(DriverManagerDataSource.java:100) at com.mchange.v2....c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:132) at com.mchange.v2.c3p0...:1810) at com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java...-- 配置数据库连接池 --> <!
= null) { mChange = String.format("%s\n%s : 收到广播:%s", mChange, DateUtils.getNowDateTime...= null) { String mChange = ""; mChange = String.format("%s\n%s : 收到广播:%s", mChange, DateUtils.getNowDateTime...("%s\n这是屏幕点亮事件", mChange); } else if (intent.getAction().equals(Intent.ACTION_SCREEN_OFF)) { mChange...)) { mChange = String.format("%s\n这是用户解锁事件", mChange); } Log.d(TAG, mChange); MainApplication.getInstance...; } public void setChangeDesc(String change) { mApp.mChange = mApp.mChange + change; } @Override
-- https://mvnrepository.com/artifact/com.mchange/c3p0 --> com.mchange ...com.mchange mchange-commons-java 0.2.20...-- https://mvnrepository.com/artifact/com.mchange/mchange-commons-java --> ...com.mchange mchange-commons-java
:0.2.11 pom.xml,maven中添加此组件会自动加载mchange-commons-java这个包 ...com.mchange c3p0 0.9.5.2...POC import com.mchange.v2.c3p0.impl.PoolBackedDataSourceBase; import com.mchange.v2.naming.ReferenceIndirector...PoolBackedDataSourceBase a = new PoolBackedDataSourceBase(false); Class clazz = Class.forName("com.mchange.v2...10099/exp"); exp.setLoginTimeout(1); } } fastjson exp: String poc = "{\"object\":[\"com.mchange.v2
测试环境 java version “1.8.0_111” pom.xml com.mchange...* java.lang.Class->forName() * com.mchange.v2.naming.ReferenceableUtils->referenceToObject() * com.mchange.v2....naming.ReferenceIndirector$ReferenceSerialized->getObject * com.mchange.v2.c3p0.impl.PoolBackedDataSourceBase...BeanFactory 存在于Tomcat依赖包中,所以使用也是非常广泛 import com.mchange.v2.c3p0.impl.PoolBackedDataSourceBase; import....c3p0.WrapperConnectionPoolDataSource"},"f":{"@type":"com.mchange.v2.c3p0.WrapperConnectionPoolDataSource
import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; import com.mchange.v2...其中里面的具体参数可参照c3p0文档(http://www.mchange.com/projects/c3p0/) 比较简单。根据属性名字几乎可以看出意思。 <?...import java.sql.ResultSet; import java.sql.SQLException; import javax.sql.DataSource; import com.mchange.v2...C3p0JDBC { public static void main(String[] args) throws SQLException { System.setProperty("com.mchange.v2...可选择性使用 import com.mchange.v2.c3p0.*; ........
当出现缺少mchange-commons-java-0.2.3.4.jar时 ? 在这里要注意一点:C3p0的版本问题,,不是说版本越高越好的。 ...版本高不一定代表它稳定 版本高不一定说它依赖的其他jar包也能支持 所以当出现:Caused by: java.lang.ClassNotFoundException: com.mchange.v2....ser.Indirector这个错误时,并不一定是缺少mchange-commons-java-0.2.3.4.jar包。
需要导入的包 c3p0-0.9.5.2.jar mchange-commons-0.2.15.jar mysql-connector.jar 2....C3P0Util.getConnection(1); System.out.println(conn); conn.close(); } } // 列出部分,可以看到地址重复,验证正确 com.mchange.v2....c3p0.impl.NewProxyConnection@6aaa5eb0 [wrapping: com.mysql.jdbc.JDBC4Connection@50cafc0a] com.mchange.v2....c3p0.impl.NewProxyConnection@1a407d53 [wrapping: com.mysql.jdbc.JDBC4Connection@68c80b21] com.mchange.v2
连接池报错了 at java.lang.Thread.run(Thread.java:745) Caused by: java.lang.AbstractMethodError: Method com/mchange.../v2/c3p0/impl/NewProxyResultSet.isClosed()Z is abstract at com.mchange.v2.c3p0.impl.NewProxyResultSet.isClosed...jar compile 更改为下面版本 com.mchange
org.springframework.web.util.NestedServletException: Handler dispatch failed; nested exception is java.lang.AbstractMethodError: Method com/mchange...artifactId> 0.9.1.2 当将这个版本改为更高版本的时候找不到,爆红,最后groupId 中的c3p0改为com.mchange...,改为如下依赖,问题解决: com.mchange c3p0 <
这是配置单个数据源配置文件 这是配置多个数据源配置文件 <bean id="dataSource2" class="com.<em>mchange</em>.v2
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