MyMain
com.test.sunc.MyMain
testMethod(com.test.sunc.MyMain)
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSource' defined in class path resource [beans.xml]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.mchange.v2.c3p0.ComboPooledDataSource]: No default constructor found; nested exception is java.lang.NoClassDefFoundError: com/mchange/v2/ser/Indirector 
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1163) 
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1107) 
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:513) 
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483) 
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:312) 
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) 
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:308) 
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) 
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:761) 
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:867) 
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:543) 
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139) 
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83) 
at com.test.sunc.MyMain.start(MyMain.java:24) 
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.junit.internal.runners.MethodRoadie.runBefores(MethodRoadie.java:122) 
at org.junit.internal.runners.MethodRoadie.runBeforesThenTestThenAfters(MethodRoadie.java:86) 
at org.junit.internal.runners.MethodRoadie.runTest(MethodRoadie.java:77) 
at org.junit.internal.runners.MethodRoadie.run(MethodRoadie.java:42) 
at org.junit.internal.runners.JUnit4ClassRunner.invokeTestMethod(JUnit4ClassRunner.java:88) 
at org.junit.internal.runners.JUnit4ClassRunner.runMethods(JUnit4ClassRunner.java:51) 
at org.junit.internal.runners.JUnit4ClassRunner$1.run(JUnit4ClassRunner.java:44) 
at org.junit.internal.runners.ClassRoadie.runUnprotected(ClassRoadie.java:27) 
at org.junit.internal.runners.ClassRoadie.runProtected(ClassRoadie.java:37) 
at org.junit.internal.runners.JUnit4ClassRunner.run(JUnit4ClassRunner.java:42) 
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86) 
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) 
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:538) 
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:760) 
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:460) 
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:206) 
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.mchange.v2.c3p0.ComboPooledDataSource]: No default constructor found; nested exception is java.lang.NoClassDefFoundError: com/mchange/v2/ser/Indirector 
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:85) 
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1155) 
... 33 more 
Caused by: java.lang.NoClassDefFoundError: com/mchange/v2/ser/Indirector 
at java.lang.Class.getDeclaredConstructors0(Native Method) 
at java.lang.Class.privateGetDeclaredConstructors(Unknown Source) 
at java.lang.Class.getConstructor0(Unknown Source) 
at java.lang.Class.getDeclaredConstructor(Unknown Source) 
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:80) 
... 34 more 
Caused by: java.lang.ClassNotFoundException: com.mchange.v2.ser.Indirector 
at java.net.URLClassLoader.findClass(Unknown Source) 
at java.lang.ClassLoader.loadClass(Unknown Source) 
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) 
at java.lang.ClassLoader.loadClass(Unknown Source) 
... 39 more

          <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close">
<property name="driverClass" value="com.microsoft.sqlserver.jdbc.SQLServerDriver" />
<property name="jdbcUrl" value="jdbc:sqlserver://localhost:1433;DatabaseName=springDb"/>
<property name="user" value="sa"/>
<property name="password" value="123456"/>
<property name="maxPoolSize" value="200"/>
<property name="minPoolSize" value="2" />
<property name="initialPoolSize" value="2" />
<property name="maxIdleTime" value="200" />
</bean>
 package com.test.sunc;

 import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.sql.Statement; import javax.sql.DataSource; import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext; public class MyMain { private ApplicationContext context ;
@Before
public void start() {
context= new ClassPathXmlApplicationContext("beans.xml"); } @Test
public void testMethod() { // EmailEvent emailEvent = new EmailEvent("test","1058154599@qq.com","正文");
// context.publishEvent(emailEvent);
DataSource dataSource = context.getBean("dataSource",DataSource.class);
Connection connection;
PreparedStatement pstmt;
try {
connection = dataSource.getConnection();
pstmt =connection.prepareStatement("insert into t_user values(?)");
pstmt.setString(1, "user32365"); System.out.println(pstmt.executeUpdate());
if(pstmt != null) {
pstmt.close();
}
if(connection != null) {
connection.close();
}
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} }
@After
public void end() {
System.out.println("结束");
}
}
<!-- https://mvnrepository.com/artifact/com.mchange/mchange-commons-java -->
<dependency>
<groupId>com.mchange</groupId>
<artifactId>mchange-commons-java</artifactId>
<version>0.2.15</version>
</dependency>

  

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