1、使用場(chǎng)景：
以自己為例，現有一個(gè)后臺管理系統管理著(zhù)游戲數據。以前是一個(gè)后臺地址對應一個(gè)后臺管理一個(gè)游戲后臺，現在改進(jìn)為一個(gè)后臺管理多個(gè)游戲數據。在登錄或者其他地方切換下就可以查詢(xún)數據。
2、步驟分為：多數據源配置和動(dòng)態(tài)切換配置和事務(wù)+OpenSessionInViewFilter配置
先不考慮動(dòng)態(tài)切換配置，一個(gè)datasource對應一個(gè)sessionFactory對應一個(gè)hibernateTemplate對應一個(gè)transactionManager對應一個(gè)OpenSessionInViewFilter
在多數據源模式下有多個(gè)sessionFactory，所以配置hibernateTemplate，transactionManager，OpenSessionInViewFilter的時(shí)候要指定sessionFactory！
<filter> <filter-name>OpenSessionInViewFilter</filter-name> <filter-class>org.springframework.orm.hibernate3.support.OpenSessionInViewFilter</filter-class> <init-param> <param-name>sessionFactoryBeanName</param-name> <param-value>sessionFactory1</param-value> </init-param> </filter> <filter-mapping> <filter-name>OpenSessionInViewFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping><filter>
<filter-name>OpenSessionInViewFilter4</filter-name> <filter-class>org.springframework.orm.hibernate3.support.OpenSessionInViewFilter</filter-class> <init-param> <param-name>sessionFactoryBeanName</param-name> <param-value>sessionFactory4</param-value> </init-param> </filter> <filter-mapping> <filter-name>OpenSessionInViewFilter4</filter-name> <url-pattern>/*</url-pattern> </filter-mapping>
<bean id="transactionManager4"
class="org.springframework.orm.hibernate3.HibernateTransactionManager" autowire="byName"> <property name="sessionFactory" ref="sessionFactory4"></property> </bean>
其中transactionManager有一個(gè)問(wèn)題，就是配置aop的時(shí)候要注意2個(gè)transactionManager不重疊。
3、在dao中注入不同的sessionfactory/hibernateTemplate 操作各自所屬數據源數據
HibernateTemplate hibernateTemplate; @Resource(name = "hibernateTemplate4") public void setHibernateTemplate(HibernateTemplate hibernateTemplate) { this.hibernateTemplate = hibernateTemplate; } HibernateTemplate hibernateTemplate; @Resource(name = "hibernateTemplate1") public void setHibernateTemplate(HibernateTemplate hibernateTemplate) { this.hibernateTemplate = hibernateTemplate; } 4、動(dòng)態(tài)切換數據源（用來(lái)切換服務(wù)器）
public class DynamicDataSource extends AbstractRoutingDataSource { private static final Logger log = Logger.getLogger(DynamicDataSource.class); @Override protected Object determineCurrentLookupKey() { String i= CustomerContextHolder.getCustomerType(); return i; }} <bean id="dataSource00" class="com.xxx.util.DynamicDataSource"><property name="targetDataSources"> <map key-type="java.lang.String"> <entry key="2" value-ref="dataSource2" /> <entry key="1" value-ref="dataSource1" /> </map> </property> <property name="defaultTargetDataSource" ref="dataSource1" /> </bean>
動(dòng)態(tài)切換很簡(jiǎn)單，datasource配置改為AbstractRoutingDataSource實(shí)現類(lèi)指定一個(gè)defaultTargetDataSource和targetDataSources
在需要切換的地方
public class CustomerContextHolder { private static final ThreadLocal contextHolder = new ThreadLocal(); public static void setCustomerType(String customerType) { contextHolder.set(customerType); } public static String getCustomerType() { return (String) contextHolder.get(); } public static void clearCustomerType() { contextHolder.remove(); }} CustomerContextHolder.setCustomerType("2");//切換key為2的數據源User uu = userService.get(User.class, "id = ?", 3l);
就這樣查詢(xún)出來(lái)的就是第二個(gè)數據源的數據了
不出意外的話(huà)，是可以看到效果的。如果出現了事務(wù)問(wèn)題就要查找下是否sessionfactory和aop配置正確。如果你把一個(gè)service類(lèi)在aop中配置2次會(huì )出現錯誤的。
多數據源：管理系統數據源+游戲數據源
動(dòng)態(tài)切換：游戲數據各服務(wù)器之間切換。
/* * Copyright 2008 biaoping.yin * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */package org.frameworkset.spi.mvc;import java.sql.SQLException;import java.util.ArrayList;import java.util.List;import org.junit.Test;import com.frameworkset.common.poolman.Record;import com.frameworkset.common.poolman.SQLExecutor;import com.frameworkset.common.poolman.handle.NullRowHandler;import com.frameworkset.common.poolman.handle.RowHandler;import com.frameworkset.util.ListInfo;public class SimpleApiTest { @Test public void insertOpera()throws SQLException { ListBean lb = new ListBean(); lb.setFieldLable("tttt"); lb.setFieldName("testttt"); lb.setFieldType("int"); lb.setIsprimaryKey(false); lb.setRequired(true); lb.setSortorder("ppp"); lb.setFieldLength(20); lb.setIsvalidated(6); //用List存放Bean，在某特定的連接池中進(jìn)行crud操作 List<ListBean> beans = new ArrayList<ListBean>(); beans.add(lb); String sql = "insert into LISTBEAN(ID,FIELDNAME,FIELDLABLE,FIELDTYPE,SORTORDER,ISPRIMARYKEY,REQUIRED,FIELDLENGTH,ISVALIDATED) " + "values(#[id],#[fieldName],#[fieldLable],#[fieldType],#[sortorder]," + "#[isprimaryKey],#[required],#[fieldLength],#[isvalidated])"; SQLExecutor.insertBeans("mysql",sql,beans); SQLExecutor.insertBean("mysql", sql, lb); SQLExecutor.insertBeans("mysql", sql, beans); SQLExecutor.insertBean(sql, lb); sql ="insert into LISTBEAN(ID,FIELDNAME,FIELDLABLE,FIELDTYPE) " + "values(?,?,?,?)";// SQLExecutor.insert(sql,122,lb.getFieldName(),lb.getFieldLable(),lb.getFieldType()); // SQLExecutor.insertWithDBName("mysql", sql,101,"insertOpreation","ttyee","int"); } @Test public void updateOpera() throws SQLException { //在某特定的連接池中直接crud對象 ListBean bean = new ListBean(); bean.setId(88); bean.setFieldLable("tttt"); bean.setFieldName("test"); bean.setFieldType("int"); bean.setIsprimaryKey(false); bean.setRequired(true); bean.setSortorder("ppp"); bean.setFieldLength(20); bean.setIsvalidated(6); List<ListBean> beans = new ArrayList<ListBean>(); String sql =""; beans.add(bean); sql ="update LISTBEAN set FIELDNAME='yyyy' where ID=#[id]"; SQLExecutor.updateBeans("mysql", sql, beans); sql ="update LISTBEAN set FIELDNAME=#[fieldName] where ID=#[id]"; SQLExecutor.updateBean(sql,bean); sql ="update LISTBEAN set FIELDNAME=#[fieldName] where ID=#[id]"; SQLExecutor.updateBean("mysql",sql,bean); sql ="update LISTBEAN set FIELDNAME=#[fieldName] where ID=#[id]"; SQLExecutor.updateBeans(sql,beans); sql = "update LISTBEAN set FIELDNAME=? where ID=?"; SQLExecutor.update(sql, "mytest",100); sql = "update LISTBEAN set FIELDNAME=? where ID=?"; SQLExecutor.updateWithDBName("mysql", sql, "zhansans",101); } @Test public void deleteOpera() throws SQLException { //在特定的連接池中對數組對象進(jìn)行crud ListBean lb = new ListBean(); lb.setId(85); lb.setFieldLable("tttt"); lb.setFieldName("testttt"); lb.setFieldType("int"); lb.setIsprimaryKey(false); lb.setRequired(true); lb.setSortorder("ppp"); lb.setFieldLength(20); lb.setIsvalidated(6); ListBean lb2 = new ListBean(); lb2.setId(15); lb2.setFieldName("this is lb2"); List<ListBean> beans = new ArrayList<ListBean>(); beans.add(lb); beans.add(lb2); String sql = ""; sql = "delete from LISTBEAN where ID=?"; SQLExecutor.delete(sql,68); sql = "delete from LISTBEAN where ID=?"; SQLExecutor.deleteByKeys(sql,67); sql ="delete from LISTBEAN where ID=#[id]"; SQLExecutor.deleteBean(sql,lb); sql = "delete from LISTBEAN where ID=#[id]"; SQLExecutor.deleteBeans(sql, beans); sql ="delete from LISTBEAN where ID=#[id]"; SQLExecutor.deleteBean("mysql",sql,lb); sql ="delete from LISTBEAN where ID=#[id]"; SQLExecutor.deleteBeans("mysql",sql,beans); sql = "delete from LISTBEAN where ID=?"; SQLExecutor.deleteWithDBName("mysql", sql, 3); sql = "delete from LISTBEAN where FIELDNAME=?"; SQLExecutor.deleteByKeysWithDBName("mysql", sql,"pppp"); } @Test public void queryOprea() throws SQLException{ List<ListBean> beans = null; String sql ="select * from LISTBEAN where ID=?"; sql = "select * from LISTBEAN where id=?"; List<ListBean> lbs = (List<ListBean>) SQLExecutor.queryList(ListBean.class, sql,22); sql = "select * from LISTBEAN where fieldName=?"; beans = (List<ListBean>) SQLExecutor.queryListWithDBName(ListBean.class,"mysql",sql,"testttt"); for(int i=0;i<beans.size();i++) System.out.println(beans.get(i).getId()); sql = "select * from LISTBEAN where fieldName=?"; List<ListBean> dbBeans = (List<ListBean>) SQLExecutor.queryListWithDBName(ListBean.class, "mysql", sql, "testttt"); for(int i=0;i<dbBeans.size();i++) System.out.println(dbBeans.get(i).getFieldName()); sql = "select * from LISTBEAN where fieldName=? and id=?"; ListBean bean = SQLExecutor.queryObject(ListBean.class, sql,"object",22); System.out.println(bean.getId()); sql="select * from LISTBEAN where FIELDNAME=? or id=?"; lbs = (List<ListBean>) SQLExecutor.queryList(ListBean.class, sql, "testttt",100); sql = "select FIELDNAME from LISTBEAN where ID=?"; String lbs1 = SQLExecutor.queryField(sql,2); System.out.println(lbs1); sql="select FIELDNAME from LISTBEAN where ID=?"; String result = SQLExecutor.queryFieldWithDBName("mysql", sql, 100); System.out.println(result); sql = "select * from LISTBEAN where ID=?"; ListBean lb = (ListBean)SQLExecutor.queryObjectWithDBName(ListBean.class,"mysql",sql,20); sql="select * from LISTBEAN where ID<? and ID>?"; ListInfo lif = SQLExecutor.queryListInfo(ListBean.class, sql, 0, 10, 20,10); beans = lif.getDatas(); for(int i=0;i<beans.size();i++) System.out.println(beans.get(i).getFieldName()+"......."); bean = new ListBean(); bean.setFieldName("testttt"); bean.setFieldLable("lisi"); sql ="select * from LISTBEAN where ID=?"; // bean = (ListBean)SQLExecutor.queryObjectBean(ListBean.class, sql, bean); sql ="select * from LISTBEAN where FIELDNAME=#[fieldName]"; result = SQLExecutor.queryFieldBean(sql, bean); System.out.println(result); result = SQLExecutor.queryFieldBeanWithDBName("mysql", sql, bean); System.out.println(result); beans = (List<ListBean>) SQLExecutor.queryListBean(ListBean.class, sql, bean); for(int i=0;i<beans.size();i++) System.out.println(beans.get(i).getId()); beans = (List<ListBean>) SQLExecutor.queryListBeanWithDBName(ListBean.class, "mysql", sql, bean); for(int i=0;i<beans.size();i++) System.out.println(beans.get(i).getId()); sql = "select * from LISTBEAN where ID>?"; lif = SQLExecutor.queryListInfoWithDBName(ListBean.class, "mysql", sql, 0, 10,80); for(int i=0;i<beans.size();i++) System.out.println(beans.get(i).getFieldName()+"^^^^^"); sql = "select * from LISTBEAN where FIELDNAME=#[fieldName]"; lif = SQLExecutor.queryListInfoBean(ListBean.class, sql, 0, 4, bean); for(int i=0;i<beans.size();i++) System.out.println(beans.get(i).getId()); lif = SQLExecutor.queryListInfoBeanWithDBName(ListBean.class, "mysql", sql, 0, 5, bean); for(int i=0;i<beans.size();i++) System.out.println(beans.get(i).getId()); bean = SQLExecutor.queryObjectBeanWithDBName(ListBean.class, "mysql", sql, bean); System.out.println(bean.getId()); } @Test public void rowHandlerQuery() throws SQLException{ String sql =""; List<ListBean> beans = null; ListBean bean = new ListBean(); ListInfo lif = new ListInfo(); final List<ListBean> lbs = new ArrayList<ListBean>(); bean.setFieldName("testttt"); bean.setFieldLable("lisi"); sql ="select * from LISTBEAN where ID=?"; SQLExecutor.queryByNullRowHandler(new NullRowHandler(){ @Override public void handleRow(Record record) throws Exception { ListBean lb = new ListBean(); lb.setId(record.getInt("id")); lb.setFieldName(record.getString("fieldName")); lbs.add(lb); }}, sql, 22); System.out.println(lbs.size()+"9999999"); sql = "select * from LISTBEAN where ID>?"; beans = (List<ListBean>) SQLExecutor.queryListByRowHandler(new RowHandler(){ @Override public void handleRow(Object rowValue, Record record) throws Exception { System.out.println("queryListByRowHandler test Result**:"+record.getString("fieldName")); ListBean lb = new ListBean(); lb.setId(record.getInt("id")); lb.setFieldName(record.getString("fieldName")); lbs.add(lb); }}, ListBean.class, sql, 80); for(int i=0;i<lbs.size();i++) System.out.println(lbs.get(i).getId()+"*****"); lbs.clear(); System.out.println(lbs.size()); lif = SQLExecutor.queryListInfoByRowHandler(new RowHandler<ListBean>(){ @Override public void handleRow(ListBean rowValue, Record record) throws Exception { rowValue.setId(record.getInt("id")); rowValue.setFieldName(record.getString("fieldName")); }}, ListBean.class, sql, 0, 10, 20); System.out.println(lif.getTotalSize()+"----"); sql = "select * from LISTBEAN where FIELDNAME=#[fieldName]"; lbs.clear(); beans = (List<ListBean>) SQLExecutor.queryListBeanByRowHandler(new RowHandler<ListBean>(){ @Override public void handleRow(ListBean rowValue, Record record) throws Exception { rowValue.setId(record.getInt("id")); rowValue.setFieldName(record.getString("fieldName")); }}, ListBean.class, sql, bean); for(int i=0;i<beans.size();i++) System.out.println(beans.get(i).getId()+" ggg"); lbs.clear(); beans = (List<ListBean>) SQLExecutor.queryListBeanWithDBNameByRowHandler(new RowHandler<ListBean>(){ @Override public void handleRow(ListBean rowValue, Record record) throws Exception { // TODO Auto-generated method stub rowValue.setId(record.getInt("id")); rowValue.setFieldName(record.getString("fieldName")); }}, ListBean.class, "mysql", sql, bean); for(int i=0;i<beans.size();i++) System.out.println(beans.get(i).getId()+" ccccccccc"); lbs.clear(); lif = (ListInfo) SQLExecutor.queryListInfoBeanByRowHandler(new RowHandler<ListBean>(){ @Override public void handleRow(ListBean rowValue, Record record) throws Exception { // TODO Auto-generated method stub rowValue.setId(record.getInt("id")); rowValue.setFieldName(record.getString("fieldName")); }},ListBean.class, sql, 5, 5, bean); beans = lif.getDatas(); for(int i=0;i<beans.size();i++) System.out.println(beans.get(i).getId()+" ddddddddddddddddddddddddd"); lbs.clear(); lif = SQLExecutor.queryListInfoBeanWithDBNameByRowHandler(new RowHandler<ListBean>(){ @Override public void handleRow(ListBean rowValue, Record record) throws Exception { // TODO Auto-generated method stub rowValue.setId(record.getInt("id")); rowValue.setFieldName(record.getString("fieldName")); }},ListBean.class, "mysql",sql, 0, 5, bean); for(int i=0;i<lbs.size();i++) System.out.println(lbs.get(i).getId()+" ffff"); sql = "select * from LISTBEAN where ID=#[id]"; bean.setId(2); ListBean lb1 =SQLExecutor.queryObjectBeanByRowHandler(new RowHandler<ListBean>(){ @Override public void handleRow(ListBean rowValue, Record record) throws Exception { // TODO Auto-generated method stub rowValue.setId(record.getInt("id")); rowValue.setFieldName(record.getString("fieldName")); }}, ListBean.class, sql, bean); System.out.println(lb1.getFieldName()); sql = "select * from LISTBEAN where ID<?"; lbs.clear(); lif = SQLExecutor.queryListInfoWithDBNameByRowHandler(new RowHandler(){ @Override public void handleRow(Object rowValue, Record record) throws Exception { ListBean lb = new ListBean(); lb.setId(record.getInt("id")); lbs.add(lb); lb.setFieldName(record.getString("fieldName")); }},ListBean.class,"mysql", sql, 0, 5, 20); for(int i=0;i<lbs.size();i++) System.out.println(lbs.get(i).getId()+" kkkk"); beans = (List<ListBean>) SQLExecutor.queryListWithDBNameByRowHandler(new RowHandler<ListBean>(){ @Override public void handleRow(ListBean rowValue, Record record) throws Exception { rowValue.setId(record.getInt("id")); rowValue.setFieldName(record.getString("fieldName")); }}, ListBean.class, "mysql", sql, 20); for(int i=0;i<beans.size();i++) System.out.println(beans.get(i).getFieldName()+" wwwww"); ListBean lb3 = SQLExecutor.queryObjectByRowHandler(new RowHandler<ListBean>(){ @Override public void handleRow(ListBean rowValue, Record record) throws Exception { rowValue.setId(record.getInt("id")); rowValue.setFieldName(record.getString("fieldName")); }}, ListBean.class, sql, 20); System.out.println(lb3.getFieldName()+"lbbbbb"); ListBean lb4 = SQLExecutor.queryObjectWithDBNameByRowHandler(new RowHandler<ListBean>(){ @Override public void handleRow(ListBean rowValue, Record record) throws Exception { rowValue.setId(record.getInt("id")); rowValue.setFieldName(record.getString("fieldName")); }}, ListBean.class,"mysql", sql, 20); System.out.println(lb4.getFieldName()+"lb4444"); sql = "select * from LISTBEAN where ID=#[id]"; ListBean lb2 = SQLExecutor.queryObjectBeanWithDBNameByRowHandler(new RowHandler<ListBean>(){ @Override public void handleRow(ListBean rowValue, Record record) throws Exception { // TODO Auto-generated method stub rowValue.setId(record.getInt("id")); rowValue.setFieldName(record.getString("fieldName")); }}, ListBean.class, "mysql", sql, bean); System.out.println(lb2.getId()+"++++"); } @Test public void nullRowHandlerQuery() throws SQLException{ String sql = ""; List<ListBean> beans = null; ListBean b = new ListBean(); b.setFieldName("testttt"); b.setFieldLable("lisi"); sql = "select * from LISTBEAN where id>?"; beans = null; final List<ListBean> lbs = new ArrayList<ListBean>(); ListInfo lif = SQLExecutor.queryListInfoByNullRowHandler(new NullRowHandler(){ @Override public void handleRow(Record record) throws Exception { // TODO Auto-generated method stub ListBean lb = new ListBean(); lb.setId(record.getInt("id")); lb.setFieldName(record.getString("fieldName")); lbs.add(lb); System.out.println("queryListInfoByNullRowHandler test result:"+record.getInt("id")); }}, sql, 0, 5, 10); beans = (List<ListBean>)lif.getDatas();// for(int i=0;i<beans.size();i++)// System.out.println(beans.get(i).getId()+"......."); for(int i=0;i<lbs.size();i++) System.out.println(lbs.get(i).getFieldName()+"####"); lbs.clear(); lif =SQLExecutor.queryListInfoWithDBNameByNullRowHandler(new NullRowHandler(){ @Override public void handleRow(Record record) throws Exception { // TODO Auto-generated method stub ListBean lb = new ListBean(); lb.setId(record.getInt("id")); lb.setFieldName(record.getString("fieldName")); lbs.add(lb); System.out.println("queryListInfoByNullRowHandler test result:"+record.getInt("id")); }},"mysql", sql, 0, 5, 10); for(int i=0;i<lbs.size();i++) System.out.println(lbs.get(i).getFieldName()+"oooooooo"); lbs.clear(); SQLExecutor.queryWithDBNameByNullRowHandler(new NullRowHandler(){ @Override public void handleRow(Record record) throws Exception { // TODO Auto-generated method stub ListBean lb = new ListBean(); lb.setId(record.getInt("id")); lb.setFieldName(record.getString("fieldName")); lbs.add(lb); }}, "mysql", sql, 80); for(int i=0;i<lbs.size();i++) System.out.println(lbs.get(i).getFieldName()+"ppppp"); sql = "select * from LISTBEAN where FIELDNAME=#[fieldName]"; lbs.clear(); SQLExecutor.queryBeanByNullRowHandler(new NullRowHandler(){ @Override public void handleRow(Record record) throws Exception { // TODO Auto-generated method stub ListBean lb = new ListBean(); lb.setId(record.getInt("id")); lb.setFieldName(record.getString("fieldName")); lbs.add(lb); }}, sql, b); for(int i=0;i<lbs.size();i++) System.out.println(lbs.get(i).getId()+"yyyyy"); lbs.clear(); SQLExecutor.queryBeanWithDBNameByNullRowHandler(new NullRowHandler(){ @Override public void handleRow(Record record) throws Exception { // TODO Auto-generated method stub ListBean lb = new ListBean(); lb.setId(record.getInt("id")); lb.setFieldName(record.getString("fieldName")); lbs.add(lb); }}, "mysql",sql, b); for(int i=0;i<lbs.size();i++) System.out.println(lbs.get(i).getId()+"rrrrrrr"); lbs.clear(); lif = SQLExecutor.queryListInfoBeanByNullRowHandler(new NullRowHandler(){ @Override public void handleRow(Record record) throws Exception { // TODO Auto-generated method stub ListBean lb = new ListBean(); lb.setId(record.getInt("id")); lb.setFieldName(record.getString("fieldName")); lbs.add(lb); }}, sql, 0, 5, b); for(int i=0;i<lbs.size();i++) System.out.println(lbs.get(i).getId()+"eeee"); SQLExecutor.queryListInfoBeanWithDBNameByNullRowHandler(new NullRowHandler(){ @Override public void handleRow(Record record) throws Exception { // TODO Auto-generated method stub ListBean lb = new ListBean(); lb.setId(record.getInt("id")); lb.setFieldName(record.getString("fieldName")); lbs.add(lb); }}, "mysql",sql, 0, 5, b); for(int i=0;i<lbs.size();i++) System.out.println(lbs.get(i).getId()+"-----"); } }
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