ibatis使用及在spring中的bean配置

最新推荐文章于 2018-11-28 13:49:54 发布

原创最新推荐文章于 2018-11-28 13:49:54 发布 · 1k 阅读

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本文介绍了一个多数据库服务接口及其实现类MultiDBServiceImpl，该类通过维护一个数据库名与SqlMapClient实例的映射来提供根据数据库名称获取相应客户端的功能。同时展示了Spring配置中如何定义数据源、SqlMapClient及多数据库服务。

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package com.common;

import com.ibatis.sqlmap.client.SqlMapClient;

public interface MultiDBService {

    /**
     * 根据数据库名，获取对应的sqlclient
     * @param dbname
     * @return
     */
    public SqlMapClient getClient(String dbname);
}

package com.common;

import java.util.Map;

import com.ibatis.sqlmap.client.SqlMapClient;


public final class MultiDBServiceImpl implements MultiDBService{
    Map<String, SqlMapClient> clients;

    public SqlMapClient getClient(String dbname) {
        SqlMapClient ret = clients.get(dbname);
        return ret;
    }


    public Map<String, SqlMapClient> getClients() {
        return clients;
    }
    public void setClients(Map<String, SqlMapClient> clients) {
        this.clients = clients;
    }
}

package com.common;

public interface BaseService {

}

package com.common;

public class BaseServiceImpl implements BaseService{
    public MultiDBService dbs;
    public MultiDBService getDbs() {
        return dbs;
    }

    public void setDbs(MultiDBService dbs) {
        this.dbs = dbs;
    }
}

bean配置

<bean id="mydatasource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
        <property name="driverClassName" value="com.mysql.jdbc.Driver" />
        <property name="url" value="${url}" />     
        <property name="username" value="${username}" />
        <property name="password" value="${password}" />
        <property name="initialSize" value="16"/>
        <property name="maxActive" value="512"/>
        <property name="maxIdle" value="16"/>
        <property name="maxWait" value="3000"/>
        <property name="validationQuery" value="select COUNT(*) from DUAL"/>
        <property name="testWhileIdle" value="true"/>
        <property name="timeBetweenEvictionRunsMillis" value="10000"/>
        <property name="numTestsPerEvictionRun" value="5"/>
        <property name="logAbandoned" value="true"/>
        <property name="removeAbandoned" value="true"/>
        <property name="removeAbandonedTimeout" value="300"/>       
    </bean>

    <bean id="mysqlMapClient" class="org.springframework.orm.ibatis.SqlMapClientFactoryBean">
        <property name="configLocation" value="WEB-INF/sqlmap-configs/db_config.xml"/>
        <property name="dataSource" ref="mydatasource"/>
    </bean>

    <bean id="dbs" class="com.common.MultiDBServiceImpl">
        <property name="clients">
            <map>
            <entry>
                <key><value>db_client</value></key>
                <ref bean="mysqlMapClient"/>
            </entry>
            </map>
        </property>     
    </bean>