spring integration同步数据库数据

spring integration同步数据库数据

需求为：当客户已有系统的数据被同步到我方数据库后，若再有新数据，只同步新数据到我方数据库。解决：因为客户的业务表是不能变动的，我方在客户数据库中新建一状态表，记录哪些数据被更新过。
当客户业务表有新数据插入时，用触发器将新数据id插入到状态表。

为方便实例：业务表pp，状态表status
结构为：
pp：

CREATE   TABLE  `pp` (
  `name`  varchar ( 255 )  default   NULL ,
  `address`  varchar ( 255 )  default   NULL ,
  `id`  int ( 11 )  NOT   NULL  auto_increment,
   PRIMARY   KEY   (`id`)
) ENGINE = InnoDB AUTO_INCREMENT = 9   DEFAULT  CHARSET = utf8;

status：

CREATE   TABLE  `status` (
  `id`  int ( 11 )  NOT   NULL  auto_increment,
  `status`  varchar ( 255 )  default   ' new ' ,
  `ppid`  int ( 11 )  NOT   NULL ,
   PRIMARY   KEY   (`id`)
) ENGINE = InnoDB AUTO_INCREMENT = 12   DEFAULT  CHARSET = utf8;

触发器：

DROP   TRIGGER   if   EXISTS  mytrigger
CREATE   TRIGGER  mytrigger after  INSERT   on  pp
for  EACH ROW
BEGIN
  INSERT   into  `status`(ppid)  values (new.id);
END ;

核心配置：jdbc-inbound-context.xml

<? 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:context ="http://www.springframework.org/schema/context"  
       xmlns:int ="http://www.springframework.org/schema/integration"  
       xmlns:int-jdbc ="http://www.springframework.org/schema/integration/jdbc"     
       xmlns:int-jms ="http://www.springframework.org/schema/integration/jms"  
       xmlns:jdbc ="http://www.springframework.org/schema/jdbc"  
       xsi:schemaLocation ="http://www.springframework.org/schema/beans 
    http://www.springframework.org/schema/beans/spring-beans-3.0.xsd 
    http://www.springframework.org/schema/context 
    http://www.springframework.org/schema/context/spring-context-3.0.xsd 
    http://www.springframework.org/schema/integration 
    http://www.springframework.org/schema/integration/spring-integration-2.0.xsd 
    http://www.springframework.org/schema/integration/jdbc 
    http://www.springframework.org/schema/integration/jdbc/spring-integration-jdbc-2.0.xsd 
    http://www.springframework.org/schema/jdbc 
    http://www.springframework.org/schema/jdbc/spring-jdbc-3.0.xsd
     http://www.springframework.org/schema/integration/jms 
    http://www.springframework.org/schema/integration/jms/spring-integration-jms-2.0.xsd" >
     < context:component-scan  base-package ="com.wisely.inbound" />
     
     < int:channel  id ="target" />
    
     < int-jdbc:inbound-channel-adapter  channel ="target"  
                    data-source ="dataSource"
                    query ="select p.id as ppid,p.name as ppname from pp p,status s where p.id=s.ppid and s.status='new'"
                    update ="update status as st set st.status='old' where ppid in (:ppid)"
                                        >
         <!--  每隔多少毫秒去抓取  -->
         < int:poller  fixed-rate ="5000"   >
             < int:transactional />
         </ int:poller >
         <!--   指定时刻抓取
        <int:poller max-messages-per-poll="1">
            <int:transactional/>
            <int:cron-trigger expression="0 0 3 * * ?"/>
        </int:poller>
         -->
     </ int-jdbc:inbound-channel-adapter >
     < int:service-activator  input-channel ="target"  ref ="jdbcMessageHandler" />      
      < context:property-placeholder  location ="classpath*:META-INF/spring/*.properties" />
      < bean  class ="org.apache.commons.dbcp.BasicDataSource"  destroy-method ="close"  id ="dataSource" >
         < property  name ="driverClassName"  value ="${database.driverClassName}" />
         < property  name ="url"  value ="${database.url}" />
         < property  name ="username"  value ="${database.username}" />
         < property  name ="password"  value ="${database.password}" />
     </ bean >    
     < bean  id ="transactionManager"  class ="org.springframework.jdbc.datasource.DataSourceTransactionManager" >
         < property  name ="dataSource"  ref ="dataSource" />
     </ bean >     
    </ beans >

JdbcMessageHandler：

package  com.wisely.inbound.jdbc;

import  java.util.List;
import  java.util.Map;

import  org.springframework.integration.annotation.ServiceActivator;
import  org.springframework.stereotype.Component;

@Component
public   class  JdbcMessageHandler  {
    @ServiceActivator
    public void handleJdbcMessage(List<Map<String ,Object>> message){
        for(Map<String,Object> resultMap:message){
            System.out.println("组:");
            for(String column:resultMap.keySet()){
                System.out.println("字段:"+column+" 值:"+resultMap.get(column));
            }
        }
    }
}

测试类：

package  com.wisely.inbound.jdbc;

import  org.springframework.context.ApplicationContext;
import  org.springframework.context.support.ClassPathXmlApplicationContext;

public   class  JdbcInbound  {

    /** *//**
     * @param args
     */
    public static void main(String[] args) {
          ApplicationContext context = 
                    new ClassPathXmlApplicationContext("/META-INF/spring/jdbc-inbound-context.xml");
    }

}

若将channel改为jms的通道。配置文件做以下修改：

<? 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:context ="http://www.springframework.org/schema/context"  
       xmlns:int ="http://www.springframework.org/schema/integration"  
       xmlns:int-jdbc ="http://www.springframework.org/schema/integration/jdbc"     
       xmlns:int-jms ="http://www.springframework.org/schema/integration/jms"  
       xmlns:jdbc ="http://www.springframework.org/schema/jdbc"  
       xsi:schemaLocation ="http://www.springframework.org/schema/beans 
    http://www.springframework.org/schema/beans/spring-beans-3.0.xsd 
    http://www.springframework.org/schema/context 
    http://www.springframework.org/schema/context/spring-context-3.0.xsd 
    http://www.springframework.org/schema/integration 
    http://www.springframework.org/schema/integration/spring-integration-2.0.xsd 
    http://www.springframework.org/schema/integration/jdbc 
    http://www.springframework.org/schema/integration/jdbc/spring-integration-jdbc-2.0.xsd 
    http://www.springframework.org/schema/jdbc 
    http://www.springframework.org/schema/jdbc/spring-jdbc-3.0.xsd
     http://www.springframework.org/schema/integration/jms 
    http://www.springframework.org/schema/integration/jms/spring-integration-jms-2.0.xsd" >
     < context:component-scan  base-package ="com.wisely.inbound" />
     
     < int-jms:channel  id ="target"   queue-name ="jdbc.queue"  connection-factory ="connectionFactory" />
    
     < int-jdbc:inbound-channel-adapter  channel ="target"  
                                      data-source ="dataSource"
                                      query ="select p.id as ppid,p.name as ppname from pp p,status s where p.id=s.ppid and s.status='new'"
                                      update ="update status as st set st.status='old' where ppid in (:ppid)"
                                        >
         <!--  每隔多少毫秒去抓取  -->
         < int:poller  fixed-rate ="5000"   >
             < int:transactional />
         </ int:poller >
         <!--   指定时刻抓取
        <int:poller max-messages-per-poll="1">
            <int:transactional/>
            <int:cron-trigger expression="0 0 3 * * ?"/>
        </int:poller>
         -->
     </ int-jdbc:inbound-channel-adapter >
     <!--   
    <int-jms:message-driven-channel-adapter id="queInbound" destination-name="jmsQueue" channel="target"/>
     -->
     < int:service-activator  input-channel ="target"  ref ="jdbcMessageHandler" />
     
      < context:property-placeholder  location ="classpath*:META-INF/spring/*.properties" />
      < bean  class ="org.apache.commons.dbcp.BasicDataSource"  destroy-method ="close"  id ="dataSource" >
         < property  name ="driverClassName"  value ="${database.driverClassName}" />
         < property  name ="url"  value ="${database.url}" />
         < property  name ="username"  value ="${database.username}" />
         < property  name ="password"  value ="${database.password}" />
     </ bean >
    
     < bean  id ="transactionManager"  class ="org.springframework.jdbc.datasource.DataSourceTransactionManager" >
         < property  name ="dataSource"  ref ="dataSource" />
     </ bean >
    
    
     < bean  id ="activeMqConnectionFactory"  class ="org.apache.activemq.spring.ActiveMQConnectionFactory" >
         < property  name ="brokerURL"  value ="vm://localhost"   />
     </ bean >
    
     < bean  id ="connectionFactory"  class ="org.springframework.jms.connection.CachingConnectionFactory" >
         < property  name ="sessionCacheSize"  value ="10"   />
         < property  name ="cacheProducers"  value ="false" />
         < property  name ="targetConnectionFactory"  ref ="activeMqConnectionFactory" />
     </ bean >
     < bean  id ="jmsTemplate"  class ="org.springframework.jms.core.JmsTemplate" >
         < property  name ="connectionFactory"  ref ="connectionFactory" />
         < property  name ="defaultDestinationName"  value ="jmsQueue"   />
     </ bean >
</ beans >

转: http://wiselyman.iteye.com/blog/1150495