Maven整合ssh

说几句：
这几天在忙春招的东西，看了很多东西，但是都没有总结，感觉很急躁。年轻人，从小听到大的一句话就是戒骄戒躁，然而最近，真的开始有点怀疑自己，有点燥。
没能做到爱其所司，脚踏实地，才发现这两个这么难，人总会不自觉地希望少走弯路，甚至是直接达到目的。能投机取巧也是聪明，但这不和脚踏实地相悖。
还有发现之前的选择有错误，学了很多可以看到效果的东西，比如框架，开发辅助工具。但是最有问题的就是，这些东西都太“简单”了。这个简单的意思是想达到可以用来做项目的水平，做到优化的水平，没有什么大的难度，网上的视频，文章一找一大堆。Crtl+C,Crtl+V谁不会。
而且最急躁的一件事，就是学框架的时候还是通过学习视频学的，没能静下心看官方文档，加上之前学习基础的时候没能总结，没做知识点的梳理。这造成了之前政治上的一个东西：下层基础不好，上层结构出问题。所以现在就是虚于表面，有点难受。好好学习吧，人生就是学到老的。

背景：之前在团队部署的一个展示性网页要加后台，然后之前开发东西都是直接自己把包放进去的，现在用maven来试下，说干就干。

环境

Fedora23 + MySQL5.7+Maven3.3.3+Eclipse

框架选择

Spring4.3.7+Hibernate4.1.7+SpringMVC4.3.7

新建webapp项目

命令：

<code>
mvn archetype:generate -DgroupId=com.ycTime.XXX -DartifactId=XXX -DarchetypeArtifactId=maven-archetype-webapp -DinteractiveMode=false -DarchetypeCatalog=local
</code>
在项目工程目录下执行，然后用eclipse打开maven项目就行了。

写pom.xml文件

<code><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>org.SKT</groupId>
<artifactId>SKT</artifactId>
<packaging>war</packaging>
<version>1.0-SNAPSHOT</version>
<name>SKT Maven Webapp</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>




<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>4.3.7.RELEASE</version>
</dependency>

<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>4.3.7.RELEASE</version>
</dependency>

<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>4.3.7.RELEASE</version>
</dependency>

    <!-- spring dao层依赖 -->
    <!-- https://mvnrepository.com/artifact/org.springframework/spring-jdbc -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-jdbc</artifactId>
        <version>4.3.7.RELEASE</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.springframework/spring-tx -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-tx</artifactId>
        <version>4.3.7.RELEASE</version>
    </dependency>
    <!-- spring web相关依赖 -->
    <!-- https://mvnrepository.com/artifact/org.springframework/spring-web -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-web</artifactId>
        <version>4.3.7.RELEASE</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-webmvc</artifactId>
        <version>4.3.7.RELEASE</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.springframework/spring-orm -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-orm</artifactId>
        <version>4.3.7.RELEASE</version>
    </dependency>
    <!-- hibernate4 -->
    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-core</artifactId>
        <version>4.1.7.Final</version>
    </dependency>
    <!-- mysql数据库驱动 -->
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>5.1.21</version>
    </dependency>
    <dependency>
        <groupId>c3p0</groupId>
        <artifactId>c3p0</artifactId>
        <version>0.9.1.2</version>
    </dependency>
    <!-- jstl -->
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>jstl</artifactId>
        <version>1.2</version>
    </dependency>
    <dependency>
        <groupId>javax.servlet.jsp</groupId>
        <artifactId>jsp-api</artifactId>
        <version>2.2.1-b03</version>
        <scope>provided</scope>
    </dependency>
    <!-- fastJson -->
    <dependency>
        <groupId>com.alibaba</groupId>
        <artifactId>fastjson</artifactId>
        <version>1.1.24</version>
    </dependency>
    <!-- servlet -->
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>servlet-api</artifactId>
        <version>2.5</version>
        <scope>provided</scope>
    </dependency>
    <!-- commons-fileUpload -->
    <!-- https://mvnrepository.com/artifact/commons-fileupload/commons-fileupload -->
    <dependency>
        <groupId>commons-fileupload</groupId>
        <artifactId>commons-fileupload</artifactId>
        <version>1.3.2</version>
    </dependency>
</dependencies>

<build>
<finalName>SKT</finalName>
</build>
</project>
</code>

写配置文件

• 在resources目录下新建文件夹configs，放入所有的配置文件
• db.properties（发现用配置文件写不用做转义处理，比如&不用转成& amp;）

<code>user=root
password=root
driverClass=com.mysql.jdbc.Driver
jdbcUrl=jdbc:mysql://localhost:3306/XXX?autoReconnect=true&useUnicode=true&characterEncoding=UTF-8
maxPoolSize=20
minPoolSize=5
maxStatements=100
acquireIncrement=2</code>

• hibernate.cfg.xml

<code><?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd"><hibernate-configuration>
<session-factory>
<property name="dialect">
org.hibernate.dialect.MySQL5InnoDBDialect
</property>
<property name="hbm2ddl.auto">update</property>
<property name="show_sql">true</property>
<property name="minPoolSize" >10</property>

<property name="maxPoolSize" >100</property>

<property name="maxIdleTime" >1800</property>

<property name="acquireIncrement" >3</property>
<property name="maxStatements" >1000</property>
<property name="initialPoolSize">10</property>

<property name="idleConnectionTestPeriod" >60</property>

<property name="acquireRetryAttempts" >30</property>
<property name="breakAfterAcquireFailure" >true</property>
<property name="testConnectionOnCheckout" >false</property>

    <property name="hibernate.c3p0.max_size">20</property>
    <!-- 最小连接数 -->
    <property name="hibernate.c3p0.min_size">5</property>
    <!-- 获得连接的超时时间,如果超过这个时间,会抛出异常，单位毫秒 -->
    <property name="hibernate.c3p0.timeout">120</property>
    <!-- 最大的PreparedStatement的数量 -->
    <property name="hibernate.c3p0.max_statements">100</property>
    <!-- 每隔120秒检查连接池里的空闲连接 ，单位是秒 -->
    <property name="hibernate.c3p0.idle_test_period">120</property>
    <!-- 当连接池里面的连接用完的时候，C3P0一下获取的新的连接数 -->
    <property name="hibernate.c3p0.acquire_increment">2</property>
    <!-- 每次都验证连接是否可用 -->
    <property name="hibernate.c3p0.validate">true</property>
</session-factory>

</hibernate-configuration>
</code>

• ApplicationContext.xml

<code><?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx"

xmlns:p="http://www.springframework.org/schema/p" xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
    http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
    http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
    http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
    http://www.springframework.org/schema/mvc
    http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd">
<context:property-placeholder location="/WEB-INF/classes/configs/db.properties" />
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
    <property name="driverClass" value="${driverClass}">
    </property>
    <property name="jdbcUrl" value="${jdbcUrl}">
    </property>
    <property name="user" value="${user}">
    </property>
    <property name="password" value="${password}">
    </property>
    <property name="maxPoolSize" value="${maxPoolSize}">
    </property>
    <property name="minPoolSize" value="${minPoolSize}">
    </property>
    <property name="maxStatements" value="${maxStatements}">
    </property>
    <property name="acquireIncrement" value="${acquireIncrement}">
    </property>
</bean>
<bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
    <property name="dataSource" ref="dataSource"></property>
    <property name="configLocation" value="/WEB-INF/classes/configs/hibernate.cfg.xml"></property>
    <property name="packagesToScan" value="com.ycTime.bean" />
    <property name="hibernateProperties">
        <props>
        <!-- key这句很重要，后面有解释 -->  
            <prop key="hibernate.c3p0.testConnectionOnCheckout">true</prop>
            <prop key="hibernate.c3p0.idle_test_period">60</prop>
            <prop key="hibernate.c3p0.acquire_increment">2</prop>
            <prop key="hibernate.c3p0.validate">true</prop>
        </props>
    </property>
</bean>
<context:component-scan base-package="com.ycTime.controller"></context:component-scan>
<context:component-scan base-package="com.ycTime.dao"></context:component-scan>
<context:component-scan base-package="com.ycTime.service"></context:component-scan>
<context:component-scan base-package="com.ycTime.util"></context:component-scan>
<context:component-scan base-package="com.ycTime.bean"></context:component-scan>
    <bean id="transactionManager"
class="org.springframework.orm.hibernate4.HibernateTransactionManager">
    <property name="sessionFactory" ref="sessionFactory"></property>
</bean>
<tx:annotation-driven transaction-manager="transactionManager" />
<tx:advice id="txAdvice" transaction-manager="transactionManager">
    <tx:attributes>
        <tx:method name="*" propagation="REQUIRED" />
    </tx:attributes>
</tx:advice>
<bean id="multipartResolver"    class="org.springframework.web.multipart.commons.CommonsMultipartResolver" p:defaultEncoding="UTF-8" />

</beans>
</code>

写web.xml

<code><?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
id="WebApp_ID" version="3.0">
<display-name>SKT</display-name>
<welcome-file-list>
<welcome-file>skt.jsp</welcome-file>
</welcome-file-list>
<context-param>
<param-name>contextConfigLocation</param-name>

    <param-value>classpath*:/configs/ApplicationContext.xml</param-value>
</context-param>
<listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<servlet>
    <servlet-name>Dispatcher</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath*:/configs/ApplicationContext.xml
        </param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
    <servlet-name>Dispatcher</servlet-name>
    <url-pattern>*.action</url-pattern>
</servlet-mapping>
<filter>
    <filter-name>encoding</filter-name>
    <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
    <init-param>
        <param-name>encoding</param-name>
        <param-value>UTF-8</param-value>
    </init-param>
</filter>
<filter-mapping>
    <filter-name>encoding</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>

</web-app></code>
上面的contextConfigLocation那里用了一个classpath*，用classpath的时候会报没找到ApplicationContext.xml的错误。

至此，SpringMVC+Hibernate+Spring的整合已经完成，剩下的就是基于注解的各个模块的开发，也没什么特殊的。