// JDBCTemplate => JDBC模板對象
// 與DBUtils中的QueryRunner非常相似.
// 0 準(zhǔn)備連接池
ComboPooledDataSource dataSource = new ComboPooledDataSource();
dataSource.setDriverClass("com.mysql.jdbc.Driver");
dataSource.setJdbcUrl("jdbc:mysql:///hibernate_32");
dataSource.setUser("root");
dataSource.setPassword("1234");
// 1 創(chuàng)建JDBC模板對象
JdbcTemplate jt = new JdbcTemplate();
jt.setDataSource(dataSource);
// 2 書寫sql,并執(zhí)行
String sql = "insert into t_user values(null,'rose') ";
jt.update(sql);

// 使用JDBC模板實(shí)現(xiàn)增刪改查
public class UserDaoImpl extends JdbcDaoSupport implements UserDao {
  @Override
  public void save(User u) {
    String sql = "insert into t_user values(null,?) ";
    super.getJdbcTemplate().update(sql, u.getName());
  }
  @Override
  public void delete(Integer id) {
    String sql = "delete from t_user where id = ? ";
    super.getJdbcTemplate().update(sql,id);
  }
  @Override
  public void update(User u) {
    String sql = "update t_user set name = ? where id=? ";
    super.getJdbcTemplate().update(sql, u.getName(),u.getId());
  }
  @Override
  public User getById(Integer id) {
    String sql = "select * from t_user where id = ? ";
    return super.getJdbcTemplate().queryForObject(sql,new RowMapper<User>(){
      @Override
      public User mapRow(ResultSet rs, int arg1) throws SQLException {
        User u = new User();
        u.setId(rs.getInt("id"));
        u.setName(rs.getString("name"));
        return u;
      }}, id);
    
  }
  @Override
  public int getTotalCount() {
    String sql = "select count(*) from t_user ";
    Integer count = super.getJdbcTemplate().queryForObject(sql, Integer.class);
    return count;
  }

  @Override
  public List<User> getAll() {
    String sql = "select * from t_user ";
    List<User> list = super.getJdbcTemplate().query(sql, new RowMapper<User>(){
      @Override
      public User mapRow(ResultSet rs, int arg1) throws SQLException {
        User u = new User();
        u.setId(rs.getInt("id"));
        u.setName(rs.getString("name"));
        return u;
      }});
    return list;
  }
}

<!-- 指定spring讀取db.properties配置 -->
<context:property-placeholder location="classpath:db.properties" />

<!-- 1.將連接池放入spring容器 -->
<bean name="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" >
  <property name="jdbcUrl" value="${jdbc.jdbcUrl}" ></property>
  <property name="driverClass" value="${jdbc.driverClass}" ></property>
  <property name="user" value="${jdbc.user}" ></property>
  <property name="password" value="${jdbc.password}" ></property>
</bean>


<!-- 2.將JDBCTemplate放入spring容器 -->
<bean name="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate" >
  <property name="dataSource" ref="dataSource" ></property>
</bean>

<!-- 3.將UserDao放入spring容器 -->
<bean name="userDao" class="cn.zhli13.jdbctemplate.UserDaoImpl" >
  <property name="jt" ref="jdbcTemplate" ></property>
</bean>

// 若UserDao類繼承了JdbcDaoSupport,則無需將JDBCTemplate注入到容器中，省略第二步，第三步改為
 <!-- 3.將UserDao放入spring容器 -->
<bean name="userDao" class="cn.zhli13.jdbctemplate.UserDaoImpl" >
  <property name="dataSource" ref="dataSource" ></property>
</bean>

// 編碼式
// 1.將核心事務(wù)管理器配置到spring容器
<!-- 事務(wù)核心管理器,封裝了所有事務(wù)操作. 依賴于連接池 -->
<bean name="transactionManager"       class="org.springframework.jdbc.datasource.DataSourceTransactionManager" >
  <property name="dataSource" ref="dataSource" ></property>
</bean>
// 2.配置TransactionTemplate模板
<!-- 事務(wù)模板對象 -->
<bean name="transactionTemplate" class="org.springframework.transaction.support.TransactionTemplate" >
  <property name="transactionManager" ref="transactionManager" >  </property>
</bean>
// 3.將事務(wù)模板注入Service
<!-- 3.Service-->
<bean name="accountService" class="cn.itcast.service.AccountServiceImpl" >
  <property name="ad" ref="accountDao" ></property>
  <property name="tt" ref="transactionTemplate" ></property>
</bean>  

 // 1.導(dǎo)包
 // aop、aspect、aopliance、aspect.weaver
 // 2.導(dǎo)入新的約束(tx)
 // beans: 最基本、context:讀取properties配置、aop:配置aop、tx:配置事務(wù)通知
 // 3.配置通知
 <!-- 配置事務(wù)通知 -->
<tx:advice id="txAdvice" transaction-manager="transactionManager" >
  <tx:attributes>
    <!-- 以方法為單位,指定方法應(yīng)用什么事務(wù)屬性
      isolation:隔離級別
      propagation:傳播行為
      read-only:是否只讀
     -->
    <tx:method name="save*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="false" />
    <tx:method name="persist*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="false" />
    <tx:method name="update*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="false" />
    <tx:method name="modify*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="false" />
    <tx:method name="delete*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="false" />
    <tx:method name="remove*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="false" />
    <tx:method name="get*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="true" />
    <tx:method name="find*" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="true" />
    <tx:method name="transfer" isolation="REPEATABLE_READ" propagation="REQUIRED" read-only="false" />
  </tx:attributes>
</tx:advice>
// 4.配置將通知織入目標(biāo)
<!-- 配置織入 -->
<aop:config >
  <!-- 配置切點(diǎn)表達(dá)式 -->
  <aop:pointcut expression="execution(* cn.zhli13.service.*ServiceImpl.*(..))" id="txPc"/>
  <!-- 配置切面 : 通知+切點(diǎn)
       advice-ref:通知的名稱
       pointcut-ref:切點(diǎn)的名稱
   -->
  <aop:advisor advice-ref="txAdvice" pointcut-ref="txPc" />
</aop:config>

// 1.導(dǎo)包（如xml配置一樣）
// 2.導(dǎo)入約束（同上）
// 3.開啟注解管理事務(wù)
<!-- 開啟使用注解管理aop事務(wù) -->
<tx:annotation-driven/>
// 4.使用注解
@Transactional(isolation=Isolation.REPEATABLE_READ,propagation=Propagation.REQUIRED,readOnly=true)
public class AccountServiceImpl implements AccountService {

@Transactional(isolation=Isolation.REPEATABLE_READ,propagation=Propagation.REQUIRED,readOnly=false)
public void transfer(final Integer from,final Integer to,final Double money) {