WebService开发实例

WebService开发实例 (Xfire+Spring+Hibernate) 
 
请注意，需要下载Xfire1.2.6、spring2.0,hibernate 3.0相关类库及相关数据库的jdbc驱动。本文相关内容是在myeclipse5.1下完成。
 
一、           首先在web.xml中添加对xfire及spring支持的相关内容，如下:
 
<?xml version="1.0" encoding="ISO-8859-1"?>
 
<!DOCTYPE web-app
    PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
    "http://java.sun.com/dtd/web-app_2_3.dtd">
<web-app>
<!-- START SNIPPET: xfire -->
<context-param>
<!—xfire及spring相关配置文件位置 -->
 
        <param-name>contextConfigLocation</param-name>
        <param-value>/WEB-INF/applicationContext.xml　
        classpath:org/codehaus/xfire/spring/xfire.xml</param-value>
    </context-param>
 
    <context-param>
        <param-name>log4jConfigLocation</param-name>
        <param-value>/WEB-INF/log4j.properties</param-value>
    </context-param>
   
    <context-param>
        <param-name>webAppRootKey</param-name>
        <param-value>webservicetest.root</param-value>
    </context-param>
 
 
     <filter>
        <filter-name>sessionFilter</filter-name>
        <filter-class>org.springframework.orm.hibernate3.support.OpenSessionInViewFilter</filter-class>
    </filter>  
    <filter-mapping>
        <filter-name>sessionFilter</filter-name>
        <url-pattern>/services/*</url-pattern>
    </filter-mapping>       
      
    <listener>
        <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
    </listener>
 
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>   
     
     <servlet>
        <servlet-name>xfire</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    </servlet>
  
 
    <servlet-mapping>
        <servlet-name>xfire</servlet-name>
        <url-pattern>/services/*</url-pattern>
    </servlet-mapping>      
   
<!-- END SNIPPET: xfire -->
</web-app>
 
二、           applicationContext.xml文件内容：
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN 2.0//EN" "http://www.springframework.org/dtd/spring-beans-2.0.dtd">
<beans>
 
<!-- 数据库连接配置 -->
    <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
   
        <property name="location" value="/WEB-INF/jdbc_connect.properties"/>
       
    </bean>
       
    <!-- C3P0连接池配置 -->
   
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close">    
       
        <property name="driverClass" value="${jdbc.driverClassName}"/>
        <property name="jdbcUrl" value="${jdbc.url}"/>
        <property name="user" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>
       
        <property name="initialPoolSize">
            <value>5</value>
        </property>
         <property name="minPoolSize">
             <value>5</value>
         </property>
         <property name="maxPoolSize">
             <value>10</value>
         </property>
         <property name="acquireIncrement">
             <value>2</value>
         </property>
         <property name="maxIdleTime">
             <value>60</value>
         </property>
         <property name="maxStatements">
             <value>0</value>
         </property>    
    </bean>
    <!-- C3P0结束 -->
   
    <bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <property name="mappingResources">
            <list>
            <!—hibernate的hbm文件位置 ，至于hbm文件可以通过工具生成，这里就不详述了-->
                <value>com/dao/emp.hbm.xml</value>             
            </list>
        </property>
        <property name="hibernateProperties">
            <props>
                <prop key="hibernate.dialect">${hibernate.dialect}</prop>      
                <prop key="hibernate.show_sql">true</prop>                 
                <prop key="hibernate.jdbc.fetch_size">100</prop>
                <prop key="hibernate.jdbc.batch_size">50</prop>
                <prop key="hibernate.use_outer_join">true</prop>               
                <prop key="hibernate.connection.SetBigStringTryClob">true</prop>
            </props>           
        </property>
       
        <property name="eventListeners">
            <map>
                <entry key="merge">
                    <bean class="org.springframework.orm.hibernate3.support.IdTransferringMergeEventListener"/>
                </entry>
            </map>
        </property>
   
    </bean>
   
   
   
    <bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
        <property name="sessionFactory" ref="sessionFactory"/>
    </bean>
   
    <bean id="QueryHib" class="Hello.HelloworldImpl ">
        <property name="sessionFactory" ref="sessionFactory"/>
    </bean>
     
   
    <!—webservice 的bean类 -->
   
    <bean id="QueryHibRis" class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">
        <property name="transactionManager" ref="transactionManager"/>
        <property name="target" ref="QueryHib"/>
        <property name="transactionAttributes">
            <props>        
            <prop key="*">PROPAGATION_REQUIRED</prop>                  
            </props>
        </property>
    </bean>
   
</beans>
 
<!-- jdbc_connect.properties文件内容,主要是数据库配置,以下是oracle数据库 -->
 
jdbc.driverClassName=oracle.jdbc.driver.OracleDriver
jdbc.url=jdbc:oracle:thin:@172.17.99.230:1521:bsrun
jdbc.username=user
jdbc.password=user
hibernate.dialect=org.hibernate.dialect.Oracle9Dialect
 
三、           xfire-servlet.xml文件内容,如下:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd"  >
 
<beans>
    <!-- START SNIPPET: xfire -->
    <bean class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
        <property name="urlMap">
            <map>
                <entry key="/QueryService">
                    <ref bean="query"/>
                </entry>   
             </map>
        </property>
       
    </bean>
   
    <!-- Declare a parent bean with all properties common to both services -->
    <bean id="query" class="org.codehaus.xfire.spring.remoting.XFireExporter">
        <property name="serviceFactory">
            <ref bean="xfire.serviceFactory"/>
        </property>
        <property name="xfire">
            <ref bean="xfire"/>
        </property>
        <property name="serviceBean">
            <ref bean="QueryHibRis"/>  <!—请注意这个需在applicationContext.xml有定义-->
 
        </property>
        <property name="serviceClass">
            <value> Hello.IHelloworld </value>
        </property>
       
    </bean>  
    <!-- END SNIPPET: xfire -->
</beans>
 
四、Hello.HelloworldImpl类内容，主要是查询数据库并返回结果
 
package Hello;
 
　
import java.util.Collection;
 
//Generated by MyEclipse
 
public class HelloworldImpl implements IHelloworld {
   
    public Collection User(){  
    return getHibernateTemplate().find("select new Helloworld.User(userid,username) from emp");　
               
    }
   
}
 
IHelloworld接口内容
package Hello;
//Generated by MyEclipse
 
import java.util.Collection;
　
 
public interface IHelloworld {
   
    public Collection User();
}
//xfire对于返回collection的，需要定义接口的IHelloworld.aegis.xml文件,需放在当前接口文件目录下。
 
<?xml version="1.0" encoding="UTF-8"?>
 <mappings>
    <mapping>
        <method name= "User" >
            <return-type componentType= "Helloworld.User" />          
        </method>         
       
    </mapping>   
   
</mappings>
 
Helloworld.User类内容:
package Helloworld;
 
public class User {
   
    String userid;
    String username;
//一定要定义此构造函数,在Hello.HelloworldImpl中有用到哟。
    Public User(String userid,String username){
        this.userid = userid;
this.username = username;
 
}  
 
    public String getUserid() {
        return userid;
    }
    public void setUserid(String userid) {
        this.userid = userid;
    }
    public String getUsername() {
        return username;
    }
    public void setUsername(String username) {
        this.username = username;
    }
 
}