// JDBCTemplate => JDBC模板對象// 與DBUtils中的QueryRunner非常相似.// 0 準備連接池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.將核心事務管理器配置到spring容器<!-- 事務核心管理器,封裝了所有事務操作. 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<!-- 事務模板對象 --><bean name="transactionTemplate" class="org.springframework.transaction.support.TransactionTemplate" >  <property name="transactionManager" ref="transactionManager" >  </property></bean>// 3.將事務模板注入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.導包 // aop、aspect、aopliance、aspect.weaver // 2.導入新的約束(tx) // beans: 最基本、context:讀取properties配置、aop:配置aop、tx:配置事務通知 // 3.配置通知 <!-- 配置事務通知 --><tx:advice id="txAdvice" transaction-manager="transactionManager" >  <tx:attributes>    <!-- 以方法為單位,指定方法應用什么事務屬性      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<!-- 配置織入 --><aop:config >  <!-- 配置切點表達式 -->  <aop:pointcut expression="execution(* cn.zhli13.service.*ServiceImpl.*(..))" id="txPc"/>  <!-- 配置切面 : 通知+切點       advice-ref:通知的名稱       pointcut-ref:切點的名稱   -->  <aop:advisor advice-ref="txAdvice" pointcut-ref="txPc" /></aop:config>

// 1.導包（如xml配置一樣）// 2.導入約束（同上）// 3.開啟注解管理事務<!-- 開啟使用注解管理aop事務 --><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) {