使用JDBC模板

JdbcTemplate：Spring里最基础的JDBC模板，利用JDBC和简单的索引参数查询提供对数据库的简单访问。并提供RowMapper实现半自动化数据库数据 bean的转化。
NameParameterJdbcTemplate：能够在执行查询时把值绑定到SQL里的命名参数，而不是索引参数。
SimpleJdbcTemplate：利用Java5的特性，比如自动装箱、通用（generic）和可变参数列表来简化JDBC模板的使用。

用一下：

 "1.0"encoding="UTF-8"?>
 "http://www.springframework.org/schema/beans"
 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"
 xmlns:jee="http://www.springframework.org/schema/jee"
 xsi:schemaLocation="http://www.springframework.org/schema/beans
  http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
  http://www.springframework.org/schema/context
  http://www.springframework.org/schema/context/spring-context-2.5.xsd
  http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
 http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-2.5.xsd
 http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">
 <importresource="classpath:bean-jdbc.xml"/>

 "jdbcTemplate"class="org.springframework.jdbc.core.JdbcTemplate">
 "dataSource"ref="dataSource">


 "namedParameterJdbcTemplate"class="org.springframework.jdbc.core.namedparam.NamedParameterJdbcTemplate">
 "dataSource"/>


 "simpleJdbcTemplate"class="org.springframework.jdbc.core.simple.SimpleJdbcTemplate">
 "dataSource"/>


 "helloJdbcTemplate"class="cn.partner4java.template.impl.HelloJdbcTemplateBean">
 "jdbcTemplate"ref="jdbcTemplate">


 "helloNamedParameterJdbcTemplate"class="cn.partner4java.template.impl.HelloNamedParameterJdbcTemplateBean">
 "namedParameterJdbcTemplate"ref="namedParameterJdbcTemplate"/>


 "helloSimpleJdbcTemplate"class="cn.partner4java.template.impl.HelloSimpleJdbcTemplateBean">
 "simpleJdbcTemplate"ref="simpleJdbcTemplate"/>

---
"jdbcTemplate"：

 packagecn.partner4java.template;
 importcn.partner4java.bean.User;
 /**
 * JdbcTemplate 测试
 * @author wangchanglong
 *
 */
 publicinterfaceHelloJdbcTemplate {
 /**
 * 保存测试
 * @param user
 */
 publicvoidsaveUser(User user);

 /**
 * 获取
 * @param id 索引
 * @return
 */
 publicUser getUserById(intid);
 }

 packagecn.partner4java.template.impl;
 importjava.sql.ResultSet;
 importjava.sql.SQLException;
 importjava.util.List;
 importorg.springframework.jdbc.core.JdbcTemplate;
 importorg.springframework.jdbc.core.RowMapper;
 importcn.partner4java.bean.User;
 importcn.partner4java.template.HelloJdbcTemplate;
 /**
 * JdbcTemplate 测试
 * @author wangchanglong
 *
 */
 publicclassHelloJdbcTemplateBeanimplementsHelloJdbcTemplate {
 privateJdbcTemplate jdbcTemplate;
 publicvoidsetJdbcTemplate(JdbcTemplate jdbcTemplate) {
 this.jdbcTemplate = jdbcTemplate;
 }
 publicUser getUserById(intid) {
 List users = jdbcTemplate.query(USER_SELECT,newObject[]{id},newRowMapper() {
 publicObject mapRow(ResultSet rs,introwNum)throwsSQLException {
 User user =newUser();
 user.setId(rs.getInt(1));
 user.setUsername(rs.getString(2));
 user.setPassword(rs.getString(3));
 returnuser;
  }
 }) ;
 returnusers.size() >0? (User)users.get(0):null;
 }
 privatestaticfinalString USER_SELECT ="select id,username,password from user where id = ?";

 publicvoidsaveUser(User user) {
 jdbcTemplate.update(USER_INSERT,newObject[] {user.getUsername(),user.getPassword()});
 }

 privatestaticfinalString USER_INSERT ="insert into user (username, password) values (?,?)";

 }

 packagecn.partner4java.template.junit;
 importorg.springframework.context.ApplicationContext;
 importorg.springframework.context.support.ClassPathXmlApplicationContext;
 importcn.partner4java.bean.User;
 importcn.partner4java.template.HelloJdbcTemplate;
 importjunit.framework.TestCase;

 publicclassHelloJdbcTemplateBeanTestextendsTestCase {
 privateHelloJdbcTemplate helloJdbcTemplate;

 @Override
 protectedvoidsetUp()throwsException {
 ApplicationContext ac =newClassPathXmlApplicationContext("beans-jdbctemplate.xml");
 helloJdbcTemplate = (HelloJdbcTemplate) ac.getBean("helloJdbcTemplate");
 }

 publicvoidtestSaveUser(){
 User user =newUser();
 user.setUsername("心烦鸟");
 user.setPassword("123");
 helloJdbcTemplate.saveUser(user);
 }

 publicvoidtestGetUserById(){
 System.out.println(helloJdbcTemplate.getUserById(1));
 }


 }

-----
namedParameterJdbcTemplate：

 packagecn.partner4java.template;
 importcn.partner4java.bean.User;
 /**
 * 测试 NamedParameterJdbcTemplate
 * @author wangchanglong
 *
 */
 publicinterfaceHelloNamedParameterJdbcTemplate {
 publicvoidsaveUser(User user);
 }

 packagecn.partner4java.template.impl;
 importjava.util.HashMap;
 importjava.util.Map;
 importorg.springframework.jdbc.core.namedparam.NamedParameterJdbcTemplate;
 importcn.partner4java.bean.User;
 importcn.partner4java.template.HelloNamedParameterJdbcTemplate;
 /**
 * 测试 NamedParameterJdbcTemplate
 * @author wangchanglong
 *
 */
 publicclassHelloNamedParameterJdbcTemplateBeanimplements
 HelloNamedParameterJdbcTemplate {
 privateNamedParameterJdbcTemplate namedParameterJdbcTemplate;
 publicvoidsetNamedParameterJdbcTemplate(
  NamedParameterJdbcTemplate namedParameterJdbcTemplate) {
 this.namedParameterJdbcTemplate = namedParameterJdbcTemplate;
 }
 publicvoidsaveUser(User user) {
 Map parameters =newHashMap();
 parameters.put("username", user.getUsername());
 parameters.put("password", user.getPassword());
 namedParameterJdbcTemplate.update(USER_INERT, parameters);
 }

 privatestaticfinalString USER_INERT ="insert into user (username,password) values (:username, :password)";
 }

 packagecn.partner4java.template.junit;
 importorg.springframework.context.ApplicationContext;
 importorg.springframework.context.support.ClassPathXmlApplicationContext;
 importcn.partner4java.bean.User;
 importcn.partner4java.template.HelloNamedParameterJdbcTemplate;
 importjunit.framework.TestCase;
 publicclassHelloNamedParameterJdbcTemplateBeanTestextendsTestCase {
 privateHelloNamedParameterJdbcTemplate helloNamedParameterJdbcTemplate;
 @Override
 protectedvoidsetUp()throwsException {
 super.setUp();
 ApplicationContext ac =newClassPathXmlApplicationContext("beans-jdbctemplate.xml");
 helloNamedParameterJdbcTemplate = (HelloNamedParameterJdbcTemplate) ac.getBean("helloNamedParameterJdbcTemplate");
 }
 publicvoidtestSaveUser(){
 User user =newUser();
 user.setUsername("面霸");
 user.setPassword("123");
 helloNamedParameterJdbcTemplate.saveUser(user);
 }


 }

--------
simpleJdbcTemplate：

 packagecn.partner4java.template;
 importcn.partner4java.bean.User;
 /**
 * 测试 simpleJdbcTemplate
 * @author wangchanglong
 *
 */
 publicinterfaceHelloSimpleJdbcTemplate {
 publicvoidsaveUser(User user);
 }

 packagecn.partner4java.template.impl;
 importjava.util.HashMap;
 importjava.util.Map;
 importorg.springframework.jdbc.core.simple.SimpleJdbcTemplate;
 importcn.partner4java.bean.User;
 importcn.partner4java.template.HelloSimpleJdbcTemplate;
 /**
 * 测试 simpleJdbcTemplate
 * @author wangchanglong
 *
 */
 publicclassHelloSimpleJdbcTemplateBeanimplementsHelloSimpleJdbcTemplate {
 privateSimpleJdbcTemplate simpleJdbcTemplate;
 publicvoidsetSimpleJdbcTemplate(SimpleJdbcTemplate simpleJdbcTemplate) {
 this.simpleJdbcTemplate = simpleJdbcTemplate;
 }

 publicvoidsaveUser(User user) {
 Map parameters =newHashMap();
 parameters.put("username", user.getUsername());
 parameters.put("password", user.getPassword());
 //下面两种都可以
 simpleJdbcTemplate.update(USER_INERT, parameters);
 //simpleJdbcTemplate.update(USER_INSERT,user.getUsername(), user.getPassword());
 }

 privatestaticfinalString USER_INERT ="insert into user (username,password) values (:username, :password)";
 privatestaticfinalString USER_INSERT ="insert into user (username, password) values (?,?)";
 }

 packagecn.partner4java.template.junit;
 importorg.springframework.context.ApplicationContext;
 importorg.springframework.context.support.ClassPathXmlApplicationContext;
 importcn.partner4java.bean.User;
 importcn.partner4java.template.HelloSimpleJdbcTemplate;
 importjunit.framework.TestCase;

 publicclassHelloSimpleJdbcTemplateBeanTestextendsTestCase {
 privateHelloSimpleJdbcTemplate helloSimpleJdbcTemplate;

 @Override
 protectedvoidsetUp()throwsException {
 ApplicationContext ac =newClassPathXmlApplicationContext("beans-jdbctemplate.xml");
 helloSimpleJdbcTemplate = (HelloSimpleJdbcTemplate) ac.getBean("helloSimpleJdbcTemplate");
 }

 publicvoidtestSaveUser(){
 User user =newUser();
 user.setUsername("心烦鸟");
 user.setPassword("123");
 helloSimpleJdbcTemplate.saveUser(user);
 }



 }

----
用法大体上如上
基本上就是Simple包含了，Name和Template，不过也不是所有的地方都可以用Simple哦