Java开发环境搭建

在搭建环境之前得先把Tomcat配置（本人选择的是6.0）

1、新建Web项目,名字自己取如：SSH

2、在WebContent/WEB-INF目录下创建web.xml文件，增加Struts2拦截器，如下代码：

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<filter>
<filter-name>struts2</filter-name>
<filter-class>
org.apache.struts2.dispatcher.FilterDispatcher
</filter-class>
</filter>
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>

</web-app>

3、配置Spring环境，先讲配置文件的写法，后面统一的引入三个框架所需要的Jar包。我们在前面的web.xml中增加Spring的监听器，代码如下

<listener>
   <listener-class>
    org.springframework.web.context.ContextLoaderListener
    </listener-class>
    </listener>
    <context-param>
      <param-name>contextConfigLocation</param-name>
         <param-value>/WEB-INF/applicationContext-*.xml,classpath*:applicationContext-*.xml</param-value>
</context-param>

4、在WebContent/WEB-INF目录下创applicationContext.xml文件：

<?xml version="1.0" encoding="UTF-8"?>
<beans
xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd">

<bean id="dataSource"
    class="org.apache.commons.dbcp.BasicDatasources">
    <property name="driverClassName"
      value="com.mysql.jdbc.Driver">
      </property>
      <property name="url"
      value="jbdc:mysql://localhost:3306/dbssh;databaseName=admin">
      </property>
      <property name="username" value="root"></property>
      <property name="password" value="123456"></property>
      <property name="maxActive" value="100"></property>
      <property name="maxWait" value="500"></property>
      <property name="defaultAutoCommit" value="true"></property>
      </bean>
    
    <bean id="sessionFactory"
    class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
    <property name="hibernateProperties">
   <props>
    <prop key="hibernate.dialect">
     org.hibernate.dialect.MySQLDialect
    </prop>
    <prop key="hibernate.show_sql">true</prop>
   </props>
  </property>

<property name="mappingResources">
    <list>
    <value>com/crm/bean/Customer.hbm.xml
    </value>
    </list>
    </property>
    </bean>
    
    <bean id="CustDao" class="com.crm.dao.impl.CustDaoImpl">
    <property name="sessionFactory">
    <ref bean="sessionFactory"></ref>
    </property>
    </bean>
</beans>

5.配置Hibernate

添加必需jar

添加映射文件和DAO层代码

要使用的jar包引入工程中的WEB-INF/lib目录中，然后将项目加入到Tomcat中启动运行看控制台是否有错误产生，如果没有错误即环境搭建完成