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    今天閒著無聊把專案拆解開,抽出了spring與mybatis部分.做了個demo,希望對初學者有些幫助,另外整個demo是從專案中完整剝離下來的,裡面的架構大家也可以參考一下.

先是完整的專案圖

  首先是使用者類 使用者類中目前就只包含sava方法,update,find方法

package com.user;import com.dao.IDaoUtil;public class User {  private String id; private String xm;  /**  * 儲存，2014-4-16  */ public void save(IDaoUtil dao)  {  dao.addObject("UserMapper.insert"
 
, this); }        //省略get/set方法 }

再下來就是usermap  為了簡單我只寫了insert, 至於別的操作大家自己寫

<?xml version="1.0" encoding="UTF-8" ?><!DOCTYPE mapperPUBLIC "-//ibatis.apache.org//DTD Mapper 3.0//EN""http://ibatis.apache.org/dtd/ibatis-3-mapper.dtd"><mapper namespace
 
="UserMapper">  <insert id="insert" parameterType="UserModel">        INSERT INTO        user (id,xm)            VALUES (         #{id,jdbcType=VARCHAR},         #{xm,jdbcType=VARCHAR}         ) </insert></mapper>

做成IDaoUtil

package com.dao;import java.util.List;import java.util.Map;public interface IDaoUtil { public void addObject(String mapperStr, Object model);  public void deleteObjectByID(String mapperStr, String id);  @SuppressWarnings("rawtypes") public void deleteObjectByMap(String mapperStr, Map map);  public void deleteObject(String mapperStr, Object model);  public void updateObject(String mapperStr,Object model);  public Object getObjectByID(String mapperStr,String keyValue);  @SuppressWarnings("rawtypes") public Object getObjectByMap(String mapperStr,Map map);  @SuppressWarnings("rawtypes") public List findListByMap(String mapperStr, Map map);  @SuppressWarnings("rawtypes") public List findListByID(String mapperStr, String id);  @SuppressWarnings("rawtypes") public Integer countByMap(String countSql,Map map);}

而下面這個類 我認為是這篇部落格的精髓 希望對大家有幫助

package com.dao;import java.util.List;import java.util.Map;//import org.apache.ibatis.builder.xml.dynamic.ForEachSqlNode;import org.apache.ibatis.mapping.BoundSql;import org.apache.ibatis.mapping.MappedStatement;import org.apache.ibatis.mapping.ParameterMapping;import org.apache.ibatis.mapping.ParameterMode;import org.apache.ibatis.reflection.MetaObject;import org.apache.ibatis.reflection.factory.DefaultObjectFactory;import org.apache.ibatis.reflection.factory.ObjectFactory;import org.apache.ibatis.reflection.property.PropertyTokenizer;import org.apache.ibatis.reflection.wrapper.DefaultObjectWrapperFactory;import org.apache.ibatis.reflection.wrapper.ObjectWrapperFactory;import org.apache.ibatis.scripting.xmltags.ForEachSqlNode;import org.apache.ibatis.session.Configuration;import org.apache.ibatis.session.SqlSession;import org.apache.ibatis.session.SqlSessionFactory;import org.mybatis.spring.support.SqlSessionDaoSupport;import org.slf4j.Logger;import org.slf4j.LoggerFactory;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.context.annotation.Scope;import org.springframework.stereotype.Service;@Scope("prototype")@Servicepublic class DaoUtil extends SqlSessionDaoSupport implements IDaoUtil{ @Override @Autowired public void setSqlSessionFactory(SqlSessionFactory sqlSessionFactory) {  super.setSqlSessionFactory(sqlSessionFactory); }  public static int daocount=0; public DaoUtil(){  daocount++;  System.out.println("DaoUtil已建立："+daocount+"次；"); }  public static final ObjectFactory DEFAULT_OBJECT_FACTORY = new DefaultObjectFactory();    public static final ObjectWrapperFactory DEFAULT_OBJECT_WRAPPER_FACTORY =                                                             new DefaultObjectWrapperFactory();    public static Logger logger = LoggerFactory.getLogger(DaoUtil.class);   @Override public void addObject(String mapperStr, Object model) {  try {   getSqlSession().insert(mapperStr, model);  // System.out.println(this.getSql(getSqlSession(),mapperStr, model));  } catch (RuntimeException re) {            logger.error("DaoUtil.addObject(); sqlmapper: "+ mapperStr               + ";\r\n### class name:" +model.getClass().getName()           //   +";\r\n### sql:" +this.getSql(getSqlSession(),mapperStr, model)              + " failed  end\r\n",re);              throw re;          }   }  @Override public void deleteObjectByID(String mapperStr, String id) {    try {    // System.out.println("sql  "+this.getSql(getSqlSession(),mapperStr, id));   getSqlSession().delete(mapperStr, id);             } catch (RuntimeException re) {         logger.error("DaoUtil.addObject(); sqlmapper: "+ mapperStr                +";\r\n### sql:" +this.getSql(getSqlSession(),mapperStr, id)               + " failed  end\r\n",re);               throw re;        }   } @SuppressWarnings("rawtypes") @Override public void deleteObjectByMap(String mapperStr, Map map) {    try {        getSqlSession().delete(mapperStr, map);             } catch (RuntimeException re) {         logger.error("DaoUtil.addObject(); sqlmapper: "+ mapperStr                +";\r\n### sql:" +this.getSql(getSqlSession(),mapperStr, map)               + " failed  end\r\n",re);               throw re;        }   }       @Override public void deleteObject(String mapperStr, Object model) {  try {     getSqlSession().delete(mapperStr, model);             } catch (RuntimeException re) {         logger.error("DaoUtil.addObject(); sqlmapper: "+ mapperStr                +";\r\n### sql:" +this.getSql(getSqlSession(),mapperStr, model)               + " failed  end\r\n",re);               throw re;        }     }  /**  * 更新資料  */ @Override public void updateObject(String mapperStr,Object model){     try {      getSqlSession().update(mapperStr, model);      } catch (RuntimeException re) {         logger.error("DaoUtil.addObject(); sqlmapper: "+ mapperStr                + ";\r\n### class name:" +model.getClass().getName()               +";\r\n### sql:" +this.getSql(getSqlSession(),mapperStr, model)               + " failed  end\r\n",re);            throw re;        }   }  /**  * 根據ID獲取一個物件  */ @Override public Object getObjectByID(String mapperStr,String keyValue){     try {     //  System.out.println("sql  "+this.getSql(getSqlSession(),mapperStr, keyValue));    Object entity = getSqlSession().selectOne(mapperStr, keyValue);     return entity;   } catch (RuntimeException re) {      re.printStackTrace();       logger.error("DaoUtil.addObject(); sqlmapper: "+ mapperStr                +";\r\n### sql:" +this.getSql(getSqlSession(),mapperStr, keyValue)               + " failed  end\r\n",re);            throw re;        }   }  /**  * 根據map獲取一個物件  */ @SuppressWarnings("rawtypes") @Override public Object getObjectByMap(String mapperStr,Map map){     try {    Object entity = getSqlSession().selectOne(mapperStr, map);     return entity;   } catch (RuntimeException re) {         logger.error("DaoUtil.addObject(); sqlmapper: "+ mapperStr                +";\r\n### sql:" +this.getSql(getSqlSession(),mapperStr, map)               + " failed  end\r\n",re);            throw re;        }   }  /**  * 根據mapper獲取資料列表  */ @Override @SuppressWarnings({ "rawtypes" }) public List findListByMap(String mapperStr, Map map) {  try {           // float a= 2/0;   List list = getSqlSession().selectList(mapperStr, map);   return list;  } catch (RuntimeException re) {   logger.error("DaoUtil.findListByMap(); sqlmapper: "+ mapperStr               +";\r\n### sql:" +this.getSql(getSqlSession(),mapperStr, map)              + " failed  end\r\n",re);     throw re;  } }  /**  * 根據mapper獲取資料列表  */ @SuppressWarnings({ "rawtypes" }) @Override public List findListByID(String mapperStr, String keyValue) {  try {           // float a= 2/0;   List list = getSqlSession().selectList(mapperStr, keyValue);   return list;  } catch (RuntimeException re) {   logger.error("DaoUtil.findListByID(); sqlmapper: "+ mapperStr               +";\r\n### sql:" +this.getSql(getSqlSession(),mapperStr, keyValue)              + " failed  end\r\n",re);     throw re;  } }   public Integer countByMap(String countSql,Map map){  Integer count=(Integer)getSqlSession().selectOne(countSql,map);  if(count==null)   count=0;  return count; }  /**獲取sql String*/ public String getSql(SqlSession sqlSession,String sqlid, Object parameterObject) {                      Configuration cfg = sqlSession.getConfiguration();  MappedStatement ms = cfg.getMappedStatement(sqlid);                    if (null == ms) {                             return "";                    }                      //BoundSql bs = ms.getBoundSql(obj);     BoundSql boundSql = ms.getBoundSql(parameterObject);     String parameterStr="";  List<ParameterMapping> parameterMappings = boundSql.getParameterMappings();         if (parameterMappings != null) {           //Object[] parameterArray = new Object[parameterMappings.size()];               MetaObject metaObject = parameterObject == null ? null : MetaObject.forObject(parameterObject, DEFAULT_OBJECT_FACTORY, DEFAULT_OBJECT_WRAPPER_FACTORY);           for (int i = 0; i < parameterMappings.size(); i++) {             ParameterMapping parameterMapping = parameterMappings.get(i);             if (parameterMapping.getMode() != ParameterMode.OUT) {               Object value;               String propertyName = parameterMapping.getProperty();               PropertyTokenizer prop = new PropertyTokenizer(propertyName);               if (parameterObject == null) {                 value = null;               } else if (ms.getConfiguration().getTypeHandlerRegistry().hasTypeHandler(parameterObject.getClass())) {                 value = parameterObject;               } else if (boundSql.hasAdditionalParameter(propertyName)) {                 value = boundSql.getAdditionalParameter(propertyName);               } else if (propertyName.startsWith(ForEachSqlNode.ITEM_PREFIX)                   && boundSql.hasAdditionalParameter(prop.getName())) {                 value = boundSql.getAdditionalParameter(prop.getName());                 if (value != null) {                   value = MetaObject.forObject(value, null, null).getValue(propertyName.substring(prop.getName().length()));                 }               } else {                 value = metaObject == null ? null : metaObject.getValue(propertyName);               }               //parameterArray[i] = value;               parameterStr+=value+"; ";           }           }           //ibatisSql.setParameters(parameterArray);        }         return boundSql.getSql()+";\r\n### parameters: "+parameterStr;  //return "沒有測試"; }}

再下來就是學生的facade類 同樣的我只寫了add方法

package com.facade.xuesheng;import javax.annotation.Resource;import org.springframework.stereotype.Service;import com.dao.IDaoUtil;import com.user.User;/** * 學生模組facade類 *  * @version V1.0 ,2013-11-10 * @author xiahui *  */@Servicepublic class XueShengFacade { @Resource private IDaoUtil daoUtil; /**  * 新增一個學生記錄  *   */ public String addDkRecord(User user){  user.save(daoUtil);   return "success"; }}

再下來就是整個程式的關鍵spring的配置檔案

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans" xmlns:security="http://www.springframework.org/schema/security" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="  http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd  http://www.springframework.org/schema/security http://www.springframework.org/schema/security/spring-security-3.1.xsd  http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.1.xsd  http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.1.xsd  http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd">    <!-- ====================================================================================== --> <!-- 啟用基於註解（Annotation-based）的配置 --> <!-- ====================================================================================== --> <context:annotation-config />  <bean id="dataSource" class="org.springframework.jdbc.datasource.SimpleDriverDataSource">        <property name="driverClass" value="oracle.jdbc.driver.OracleDriver" />        <property name="url" value="jdbc:oracle:thin:@203.218.132.153:1521:orcl" />        <property name="username" value="hasdfp" />        <property name="password" value="sdfd" />     </bean>          <!-- ====================================================================================== --> <!-- 配置 SqlMapClient --> <!-- ====================================================================================== --> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">  <property name="dataSource" ref="dataSource" />  <property name="configLocation" value="classpath:config/sqlMapConfig.xml" /> </bean> <bean id="transactionManager"  class="org.springframework.jdbc.datasource.DataSourceTransactionManager">  <property name="dataSource" ref="dataSource" /> </bean>  <tx:annotation-driven transaction-manager="transactionManager" />  <context:component-scan base-package="com.dao"/> <context:component-scan base-package="com.facade.xuesheng"/></beans>

package com.facade.xuesheng;import org.example.Country;import org.junit.Test;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.test.context.ContextConfiguration;import org.springframework.test.context.junit4.AbstractJUnit4SpringContextTests;import com.dao.IDaoUtil;import com.facade.xuesheng.XueShengFacade;import com.user.User;@ContextConfiguration(locations = { "classpath:test/UserApplicationContext.xml" })public class XueShengFacadeTest extends AbstractJUnit4SpringContextTests { @Autowired private XueShengFacade xueShengFacade;        /**   *    * @throws Exception   */ @Test public void testAddDkRecord() throws Exception {  User user = new User();  user.setId("123");  user.setXm("郭靖");    String result = xueShengFacade.addDkRecord(user);  System.out.println(result); }   } }

測試結果

DaoUtil已建立：1次；
success

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