1
我一直在努力解決這個問題2天，已經通過了幾個帖子，但仍然沒有成功解決這個問題。你需要通常的支持。數據庫連接沒有關閉
當連接超過定義的連接池大小時，我與數據庫的連接不會關閉，這會導致問題。我的hibernate & spring沒有釋放連接或使用單個連接進行事務處理。
servlet的context.xml中
<?xml version="1.0" encoding="UTF-8"?>
<beans:beans xmlns="http://www.springframework.org/schema/mvc"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:beans="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">
<context:component-scan base-package="com.dove.controller" />
<!-- Enables the Spring MVC @Controller programming model -->
<annotation-driven />
<!-- Handles HTTP GET requests for /resources/** by efficiently serving up static resources in the ${webappRoot}/resources directory -->
<resources mapping="/resources/**" location="/resources/" />
<!-- Data Source -->
<beans:bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<beans:property name="driverClassName" value="com.mysql.jdbc.Driver" />
<beans:property name="url"
value="jdbc:mysql://localhost:3306/dovecampaign" />
<beans:property name="username" value="root" />
<beans:property name="password" value="admin" />
</beans:bean>
<!-- Hibernate 4 SessionFactory Bean definition -->
<beans:bean id="sessionFactory"
class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<beans:property name="dataSource" ref="dataSource" />
<beans:property name="annotatedClasses">
<beans:list>
<beans:value>com.dove.dao.model.User</beans:value>
<beans:value>com.dove.dao.model.Media</beans:value>
<beans:value>com.dove.dao.model.Votes</beans:value>
</beans:list>
</beans:property>
<beans:property name="hibernateProperties">
<beans:props>
<beans:prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect
</beans:prop>
<beans:prop key="hibernate.show_sql">true</beans:prop>
<beans:prop key="hibernate.hbm2ddl.auto">update</beans:prop>
<beans:prop key="hibernate.current_session_context_class">thread</beans:prop>
<beans:prop key="hibernate.connection.pool_size">10</beans:prop>
<beans:prop key="hibernate.connection.release_mode">auto</beans:prop>
<!-- <beans:prop key="hibernate.current_session_context_class">jta</beans:prop> -->
<beans:prop key="connection.release_mode">after_statement</beans:prop>
<beans:prop key="transaction.auto_close_session">true</beans:prop>
</beans:props>
</beans:property>
</beans:bean>
<!-- Spring hibernate transaction manager -->
<beans:bean id="transactionManager"
class="org.springframework.orm.hibernate4.HibernateTransactionManager">
<beans:property name="sessionFactory" ref="sessionFactory"></beans:property>
</beans:bean>
<!-- File Upload Multipart Resolver -->
<beans:bean id="multipartResolver"
class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<!-- setting maximum upload size -->
<beans:property name="maxUploadSize" value="200000000" />
</beans:bean>
<!-- Classes Mapping -->
<beans:bean id="uploadController" class="com.dove.controller.UploadController">
<beans:property name="userService" ref="userService"></beans:property>
<beans:property name="votesService" ref="votesService"></beans:property>
</beans:bean>
<beans:bean id="userDao" class="com.dove.dao.manager.users.UserDaoImpl">
</beans:bean>
<beans:bean id="userService" class="com.dove.service.users.UserServiceImpl">
<beans:property name="userDao" ref="userDao"></beans:property>
</beans:bean>
<beans:bean id="votesDao" class="com.dove.dao.manager.votes.VotesDaoImpl">
</beans:bean>
<beans:bean id="votesService" class="com.dove.service.votes.VotesServiceImpl">
<beans:property name="votesDao" ref="votesDao"></beans:property>
</beans:bean>
<!-- Resolves views selected for rendering by @Controllers to .jsp resources
in the /WEB-INF/views directory -->
<beans:bean id="tilesConfigurer"
class="org.springframework.web.servlet.view.tiles2.TilesConfigurer">
<beans:property name="definitions">
<beans:list>
<beans:value>/WEB-INF/tiles.xml</beans:value>
</beans:list>
</beans:property>
</beans:bean>
<beans:bean id="tilesViewResolver"
class="org.springframework.web.servlet.view.UrlBasedViewResolver">
<beans:property name="viewClass">
<beans:value>
org.springframework.web.servlet.view.tiles2.TilesView
</beans:value>
</beans:property>
<beans:property name="order" value="0" />
</beans:bean>
<context:component-scan base-package="com.frameworkonly.tilesapp" />
</beans:beans>
GenericDaoImpl.java
[![package com.dove.dao.manager;
import java.io.Serializable;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.util.Collections;
import java.util.List;
import org.hibernate.Criteria;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;
@SuppressWarnings("unchecked")
@Repository
public abstract class GenericDaoImpl<E, K extends Serializable> implements GenericDao<E, K> {
@Autowired
private SessionFactory sessionFactory;
public Session getSession() {
return sessionFactory.getCurrentSession();
}
protected Class<? extends E> daoType;
public GenericDaoImpl() {
Type t = getClass().getGenericSuperclass();
ParameterizedType pt = (ParameterizedType) t;
daoType = (Class) pt.getActualTypeArguments()\[0\];
}
protected Session currentSession() {
return sessionFactory.getCurrentSession();
}
public void add(E entity) {
if(!currentSession().getTransaction().isActive()){
currentSession().beginTransaction();
}
currentSession().save(entity);
currentSession().getTransaction().commit();
}
public void saveOrUpdate(E entity) {
if(!currentSession().getTransaction().isActive()){
currentSession().beginTransaction();
}
currentSession().saveOrUpdate(entity);
}
public void update(E entity) {
// currentSession().beginTransaction();
if(!currentSession().getTransaction().isActive()){
currentSession().beginTransaction();
}
currentSession().update(entity);
currentSession().getTransaction().commit();
}
public void remove(E entity) {
if(!currentSession().getTransaction().isActive()){
currentSession().beginTransaction();
}
currentSession().delete(entity);
}
public E find(K key) {
if(!currentSession().getTransaction().isActive()){
currentSession().beginTransaction();
}
return (E) currentSession().get(daoType, key);
}
public List<E> getAll() {
if(!currentSession().getTransaction().isActive()){
currentSession().beginTransaction();
}
List<E> list = currentSession().createCriteria(daoType).setResultTransformer(Criteria.DISTINCT_ROOT_ENTITY).list();
currentSession().getTransaction().commit();
return list;
}
的pom.xml
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.cimple.dove</groupId>
<artifactId>dovecampaign</artifactId>
<packaging>war</packaging>
<version>0.0.1-SNAPSHOT</version>
<name>dovecampaign Maven Webapp</name>
<url>http://maven.apache.org</url>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
<!-- Spring Framework -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>3.2.0.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>3.2.0.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>3.2.0.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>3.2.0.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>3.2.0.RELEASE</version>
<exclusions>
<exclusion>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>3.2.0.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>3.2.0.RELEASE</version>
</dependency>
<!-- Need this for json to/from object -->
<!-- <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId>
<version>2.1.0</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId> <version>2.1.0</version> n </dependency> -->
<!-- Logging -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.5.11</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>jcl-over-slf4j</artifactId>
<version>1.5.11</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.5.11</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.16</version>
<scope>runtime</scope>
</dependency>
<!-- Apache tiles -->
<dependency>
<groupId>org.apache.tiles</groupId>
<artifactId>tiles-api</artifactId>
<version>2.2.2</version>
</dependency>
<dependency>
<groupId>org.apache.tiles</groupId>
<artifactId>tiles-core</artifactId>
<version>2.2.2</version>
<exclusions>
<exclusion>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-jdk14</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.apache.tiles</groupId>
<artifactId>tiles-jsp</artifactId>
<version>2.2.2</version>
</dependency>
<dependency>
<groupId>org.apache.tiles</groupId>
<artifactId>tiles-servlet</artifactId>
<version>2.2.2</version>
</dependency>
<dependency>
<groupId>org.apache.tiles</groupId>
<artifactId>tiles-template</artifactId>
<version>2.2.2</version>
</dependency>
<!-- jstl Servlet -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>javax.servlet.jsp.jstl</groupId>
<artifactId>jstl-api</artifactId>
<version>1.2</version>
<scope>provided</scope>
</dependency>
<!-- Joda Time -->
<dependency>
<groupId>joda-time</groupId>
<artifactId>joda-time</artifactId>
<version>2.4</version>
</dependency>
<!-- Jackson -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.0.0</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>2.0.0-RC3</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-annotations</artifactId>
<version>2.0.0</version>
</dependency>
<!-- HTTP Client -->
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient-osgi</artifactId>
<version>4.3</version>
</dependency>
<!-- Amazon AWS -->
<!-- <dependency>
<groupId>com.amazonaws</groupId>
<artifactId>aws-java-sdk-sns</artifactId>
<version>1.10.66</version>
</dependency>
<dependency>
<groupId>com.amazonaws</groupId>
<artifactId>aws-java-sdk-s3</artifactId>
<version>1.10.66</version>
</dependency> -->
<dependency>
<groupId>com.amazonaws</groupId>
<artifactId>aws-java-sdk</artifactId>
<version>1.4.3</version>
</dependency>
<!-- http client for Amazon AWS -->
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
<version>4.2.2</version>
</dependency>
<!-- http core for Amazon AWS -->
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpcore</artifactId>
<version>4.2.2</version>
</dependency>
<!-- httpmime for Amazon AWS -->
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpmime</artifactId>
<version>4.2.2</version>
</dependency>
<!-- httpclient cache for Amazon AWS -->
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient-cache</artifactId>
<version>4.2.2</version>
</dependency>
<!-- Hibernate -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>4.1.9.Final</version>
</dependency>
<!-- MySql -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.35</version>
</dependency>
<!-- Apache Common DBCP -->
<dependency>
<groupId>commons-dbcp</groupId>
<artifactId>commons-dbcp</artifactId>
<version>1.2.2</version>
</dependency>
<!-- Apache Common Fileupload -->
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.3</version>
</dependency>
<!-- Apache Common Codec -->
<dependency>
<groupId>commons-codec</groupId>
<artifactId>commons-codec</artifactId>
<version>1.10</version>
</dependency>
<!-- Email utility - Custom dependency -->
<dependency>
<groupId>com.cimple</groupId>
<artifactId>EmailUtility</artifactId>
<version>1.0.0</version>
</dependency>
</dependencies>
<build>
<!-- <pluginManagement> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId> <version>3.0</version> <configuration>
<source>1.6</source> <target>1.6</target> </configuration> </plugin> <plugin>
<groupId>org.jboss.as.plugins</groupId> <artifactId>jboss-as-maven-plugin</artifactId>
<version>5.1.0.GA</version> <executions> <execution> <phase>install</phase>
<goals> <goal>deploy</goal> </goals> </execution> </executions> </plugin>
</plugins> </pluginManagement> -->
<finalName>dovecampaign</finalName>
</build>
</project>
您沒有關閉會話。 –
我沒有在提交後在每個方法下添加currentSession（）。close語句，但我沒有工作。即使併發點擊產生異常像會話已關閉！ –
如果您在每個方法中添加關閉會話，並且您希望調用類執行兩個調用，那麼它們將在不同的會話中執行。你的調用類是知道每個事務必須執行什麼的人。請參閱Spring的'@ Transactional'實用程序。但是你現在所擁有的是一種非常不可取的設計，因爲它通過一次會話來管理所有的呼叫。 –