jdbcTemplate spring

Jdbctemplate 的基本使用

 

依赖：

<dependencies>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context</artifactId>
        <version>4.1.3.RELEASE</version>
    </dependency>
    <dependency>
        <groupId>commons-dbcp</groupId>
        <artifactId>commons-dbcp</artifactId>
        <version>1.4</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-jdbc</artifactId>
        <version>4.1.3.RELEASE</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-test</artifactId>
        <version>4.0.5.RELEASE</version>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>org.aspectj</groupId>
        <artifactId>aspectjweaver</artifactId>
        <version>1.8.4</version>
    </dependency>
<!-- jdbc driver --> <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>5.1.21</version>
        <scope>runtime</scope>
    </dependency>
</dependencies>

 

 

建立数据库表：

CREATE TABLE `user` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `username` varchar(255) DEFAULT NULL,
  `password` varchar(255) DEFAULT NULL,
  `createDate` datetime DEFAULT NULL,
  `modifyDate` varchar(255) DEFAULT NULL,
  `type` varchar(255) DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=223 DEFAULT CHARSET=utf8;

aplicationContext.xml的配置

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
       http://www.springframework.org/schema/context
       http://www.springframework.org/schema/context/spring-context-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">
<!-- 扫描包 --> <context:annotation-config/>
    <context:component-scan base-package="com.hang.*" />
<!-- 配置jdbc --> <bean class="org.springframework.beans.factory.config.PreferencesPlaceholderConfigurer">
        <property name="locations">
            <value>classpath:jdbc.properties</value>
        </property>
    </bean>
<!-- 配置數據源 --> <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
destroy-method="close">
        <property name="driverClassName" value="${jdbc.driver}" />
        <property name="url" value="${jdbc.url}" />
        <property name="username" value="${jdbc.username}" />
        <property name="password" value="${jdbc.password}" />
<!-- 连接池启动时的初始值 --> <property name="initialSize" value="${initialSize}"/>
        <property name="maxActive" value="${maxActive}"/>
        <property name="maxIdle" value="${maxIdle}"/>
        <property name="minIdle" value="${minIdle}"/>
    </bean>
<!-- 配置jdbcTemplate模板 --> <bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
        <property name="dataSource" ref="dataSource" />
    </bean>
<!-- 配置 transactionManager事物管理--> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>
<!-- Spring AOP config配置切点 --> <aop:config>
        <aop:pointcut expression="execution(* com.hang.service.*.*(..))" id="bussinessService" />
        <aop:advisor advice-ref="txAdvice" pointcut-ref="bussinessService"/>
    </aop:config>
<!-- 配置那个类那个方法用到事务处理 --> <tx:advice id="txAdvice" transaction-manager="transactionManager">
        <tx:attributes>
            <tx:method name="get*" read-only="true"/>
            <tx:method name="add*" propagation="REQUIRED"/>
            <tx:method name="update*" propagation="REQUIRED"/>
            <tx:method name="delete*" propagation="REQUIRED"/>
            <tx:method name="*" propagation="REQUIRED"/>
        </tx:attributes>
    </tx:advice>
    </beans>

Jdbc.properties

jdbc.driver=com.mysql.jdbc.Driver jdbc.url=jdbc:mysql://localhost:3306/jdbcTemplate?useUnicode=true&characterEncoding=UTF-8 jdbc.username=root jdbc.password=rootinitialSize=1 maxActive=500 maxIdle=2 minIdle=1             

建立User对象

package com.hang.entity; public class User {

 private static final long serialVersionUID = 1L; private int id; private String password; private String username; private String createDate; private String modifyDate; private String type; /** 省略set get 方法**/
}

建立JdbcTempBaseDao，用于获取 jdbcTemplate对象的公共类

package com.hang.dao.base; import org.springframework.jdbc.core.JdbcTemplate; import org.springframework.jdbc.core.support.JdbcDaoSupport; import javax.annotation.PostConstruct; import javax.annotation.Resource; public class JdbcTempBaseDao extends JdbcDaoSupport {

 /** */ @Resource(name = "jdbcTemplate")
 public JdbcTemplate jdbcTemplate; @PostConstruct public void initSqlMapClient() { 
 super.setJdbcTemplate(jdbcTemplate); } 
}

建立IUserDao接口，对userDao的基本操作

package com.hang.dao; import com.hang.entity.User; import java.util.List; import java.util.Map; public interface IUserDao {
 public List<User> getUserList(); public List<User> getUserLists(Map<String, Object> map); public Integer getUserCount(Map<String, Object> map); public User getUserById(Integer primaryKeyId); public void delUserById(Integer primaryKeyId); public User addUser(User entity); public void editUser(User entity); }

IUserDao 的实现

package com.hang.dao.impl; import com.hang.dao.IUserDao; import com.hang.dao.base.JdbcTempBaseDao; import com.hang.entity.User; import org.springframework.jdbc.core.BeanPropertyRowMapper; import org.springframework.jdbc.core.PreparedStatementCreator; import org.springframework.jdbc.core.RowCallbackHandler; import org.springframework.jdbc.support.GeneratedKeyHolder; import org.springframework.stereotype.Repository; import java.sql.Connection; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; import java.util.ArrayList; import java.util.List; import java.util.Map; @Repository @SuppressWarnings("all")
public class UserDaoImpl extends JdbcTempBaseDao implements IUserDao {

 @Override public List<User> getUserList() {
 String sql="select * from user "; final List<User> list= new ArrayList<User>(); jdbcTemplate.query(sql, new RowCallbackHandler(){
 @Override public void processRow(ResultSet rs) throws SQLException {
 User u=new User(); u.setId(rs.getInt("id")); u.setUsername(rs.getString("username")); u.setPassword(rs.getString("password")); u.setCreateDate(rs.getString("createDate")); u.setModifyDate(rs.getString("modifyDate")); u.setType(rs.getString("type")); list.add(u); }
 }); return list; }

 @Override public List<User> getUserLists(Map<String, Object> map) {
 return null; }

 @Override public Integer getUserCount(Map<String, Object> map) {
 String sql = "select count(1) from User where id=? "; return getJdbcTemplate().queryForObject(sql, Integer.class,map); }

 @Override public User getUserById(Integer primaryKeyId) {
 String sql = "select id,username, password, createDate, modifyDate,type from User where id=?"; List<User> userList = getJdbcTemplate().query(sql, new BeanPropertyRowMapper(User.class), primaryKeyId); if(userList.size() == 0) {
 return null; }
 return userList.get(0); }

 @Override public void delUserById(Integer primaryKeyId) {
 String sql = "delete from user where id=?"; getJdbcTemplate().update(sql, primaryKeyId); }

 @Override public User addUser(final User entity) {
 final String sql = "insert into User(username, password, createDate, modifyDate,type) values(?,?,?,?,?)"; GeneratedKeyHolder keyHolder = new GeneratedKeyHolder(); getJdbcTemplate().update(new PreparedStatementCreator() {
 @Override public PreparedStatement createPreparedStatement(Connection connection) throws SQLException {
 PreparedStatement psst = connection.prepareStatement(sql, new String[]{"id"}); psst.setString(1, entity.getUsername()); psst.setString(2, entity.getPassword()); psst.setString(3, entity.getCreateDate()); psst.setString(4, entity.getModifyDate()); psst.setString(5, entity.getType()); return psst; }
 }, keyHolder); entity.setId(keyHolder.getKey().intValue()); return entity; }

 @Override public void editUser(User entity) {
 String sql="update user set username=?,password=?"; jdbcTemplate.update(sql, User.class,entity); } 
}

UserDaoTest，对userdao的测试

import com.hang.dao.IUserDao; import com.hang.entity.User; import org.junit.BeforeClass; import org.junit.Test; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; import java.util.List; /** * Created with IntelliJ IDEA. * User: hang * Date: 14-12-18 * Time: 上午11:44 * To change this template use File | Settings | File Templates. */ public class UserDaoTest{

 private static IUserDao userDao; @BeforeClass public static void setUpBeforeClass() {
 ApplicationContext applicationContext = new ClassPathXmlApplicationContext("aplicationContext.xml"); userDao = (IUserDao) applicationContext.getBean("userDaoImpl"); }

 @Test public void getUserList(){
 List<User> users = userDao.getUserList(); System.out.println(users.size()); }
}