一、開發環境

Windows 10

IntelliJ IDEA 2016.1 旗艦版

JDK1.8

二、項目和數據庫結構

項目結構：

數據庫(MySQL 5.5.39)：

/*

Navicat MySQL Data Transfer

Source Server : localhost

Source Server Version : 50539

Source Host : localhost:3306

Source Database : ispider_data

Target Server Type : MYSQL

Target Server Version : 50539

File Encoding : 65001

Date: 2016-04-11 10:11:09

*/

SET FOREIGN_KEY_CHECKS=0;

-- ----------------------------

-- Table structure for `myspringjdbcdb`

-- ----------------------------

DROP TABLE IF EXISTS `myspringjdbcdb`;

CREATE TABLE `myspringjdbcdb` (

`u_id` bigint(20) unsigned NOT NULL AUTO_INCREMENT,

`u_name` varchar(100) NOT NULL,

`u_password` varchar(200) NOT NULL,

PRIMARY KEY (`u_id`)

) ENGINE=InnoDB AUTO_INCREMENT=10 DEFAULT CHARSET=utf8;

-- ----------------------------

-- Records of myspringjdbcdb

-- ----------------------------

INSERT INTO `myspringjdbcdb` VALUES ('7', '張三', 'zhangsan');

INSERT INTO `myspringjdbcdb` VALUES ('8', '李四', 'lisi');

INSERT INTO `myspringjdbcdb` VALUES ('9', '王五', 'wangwu');

三、代碼分析

1、配置上mysql的連接驅動

注意：需要引入jdbc jar包。

在applicationContext.xml中進行配置(包含了下文的bean配置)：

com.mysql.jdbc.Driver

jdbc:mysql://localhost:3306/ispider_data

root

xxxxxx

2、UserDao.java

package springjdbc.dao;

import springjdbc.pojo.User;

import java.util.List;

/**

* Created by LTN on 2016/4/8.

*/

public interface UserDao {

List findAllUser();

void create(String id, String name,String password);

void execInsert(String sql);

}

3、UserDaoImp.java

package springjdbc.dao.impl;

import org.springframework.jdbc.core.JdbcTemplate;

import org.springframework.jdbc.core.RowCallbackHandler;

import springjdbc.dao.UserDao;

import springjdbc.pojo.User;

import java.sql.ResultSet;

import java.sql.SQLException;

import java.util.ArrayList;

import java.util.List;

public class UserDaoImpl implements UserDao {

private JdbcTemplate jdbcTemplate;

public List findAllUser(){

String sql = "select * from myspringjdbcdb";

final List listAllUser = new ArrayList();

jdbcTemplate.query(sql, new RowCallbackHandler() {

@Override

public void processRow(ResultSet resultSet) throws SQLException {

User u=new User();

u.setuName(resultSet.getString("u_name"));

u.setuPassword(resultSet.getString("u_password"));

u.setuId(resultSet.getString("u_id"));

listAllUser.add(u);

}

});

return listAllUser;

}

@Override

public void create(String id, String name,String password) {

String SQL = "insert into myspringjdbcdb (u_id, u_name, u_password) values (?, ?, ?)";

jdbcTemplate.update(SQL, id, name,password);

System.out.println("Created Record Id = " + id + " Name = " +name + "Password = " + password);

}

@Override

public void execInsert(String sql) {

jdbcTemplate.execute(sql);

}

public void setJdbcTemplate(JdbcTemplate jdbcTemplate) {

this.jdbcTemplate = jdbcTemplate;

}

public JdbcTemplate getJdbcTemplate() {

return jdbcTemplate;

}

}

注意在applicationContext.xml中配置userDAOI的 bean。

4、User.java

package springjdbc.pojo;

import springjdbc.dao.UserDao;

import java.util.List;

/**

* Created by LTN on 2016/4/8.

*/

public class User {

private String uId;

private String uName;

private String uPassword;

private UserDao dao;

public User() {

}

public void setDao(UserDao dao) {

this.dao = dao;

}

public UserDao getDao() {

return dao;

}

public String getuId() {

return uId;

}

public void setuId(String uId) {

this.uId = uId;

}

public String getuName() {

return uName;

}

public void setuName(String uName) {

this.uName = uName;

}

public String getuPassword() {

return uPassword;

}

public void setuPassword(String uPassword) {

this.uPassword = uPassword;

}

public User(String uName,String uPassword) {

this.uName=uName;

this.uPassword=uPassword;

}

public List findAllUser(){

return dao.findAllUser();

}

public String toString(){

return "User [dao="+dao+", uId="+uId+", uName"+uName+", uPassword="+uPassword+"]";

}

}

注意在applicationContext.xml中配置user的bean。

5、編寫測試類TestAction.java

package springjdbc.action;

import org.springframework.beans.factory.BeanFactory;

import org.springframework.beans.factory.xml.XmlBeanFactory;

import org.springframework.core.io.ClassPathResource;

import org.springframework.core.io.Resource;

import springjdbc.pojo.User;

import java.util.List;

/**

* Created by LTN on 2016/4/11.

*/

public class TestAction {

public static void main(String[] args) {

Resource resource = new ClassPathResource("applicationContext.xml");

BeanFactory factory=new XmlBeanFactory(resource);

User user = (User) factory.getBean("user");

List list=user.findAllUser();

System.out.println(list);

}

}

另一個測試類：

package springjdbc.action;

import org.springframework.context.ApplicationContext;

import org.springframework.context.support.ClassPathXmlApplicationContext;

import org.springframework.jdbc.core.JdbcTemplate;

import scala.actors.threadpool.Arrays;

import springjdbc.dao.UserDao;

import springjdbc.dao.impl.UserDaoImpl;

import springjdbc.pojo.User;

import javax.sql.DataSource;

import java.util.List;

/**

* Created by LTN on 2016/4/11.

*/

public class MyTest {

private DataSource dataSource;

private JdbcTemplate jdbcTemplate;

public void setDataSource(DataSource ds) {

this.dataSource = ds;

this.jdbcTemplate = new JdbcTemplate(this.dataSource);

}

public static void main(String[] args) {

ApplicationContext context = new ClassPathXmlApplicationContext("/conf/datasources.xml");

UserDao userDao=(UserDao)context.getBean("userDAO");

// userDao.create("003","java","psw");

String sql2="insert into myspringjdbcdb (u_id, u_name, u_password) values ('4','smith','pw007')";

userDao.execInsert(sql2);

List list=userDao.findAllUser();

System.out.print(list.size());

}

}

代碼完結。

四、運行后的結果

INFO - Loading XML bean definitions from class path resource [applicationContext.xml]

SLF4J: Class path contains multiple SLF4J bindings.

SLF4J: Found binding in [jar:file:/F:/workspace_idea/ISpider/WebContent/WEB-INF/lib/phoenix-4.2.2-client.jar!/org/slf4j/impl/StaticLoggerBinder.class]

SLF4J: Found binding in [jar:file:/F:/workspace_idea/ISpider/WebContent/WEB-INF/lib/slf4j-log4j12-1.6.1.jar!/org/slf4j/impl/StaticLoggerBinder.class]

SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.

INFO - Loaded JDBC driver: com.mysql.jdbc.Driver

[User [dao=null, uId=7, uName張三, uPassword=zhangsan], User [dao=null, uId=8, uName李四, uPassword=lisi], User [dao=null, uId=9, uName王五, uPassword=wangwu]]

Process finished with exit code 0

參考資料：

【1】Spring中的JDBCTemplate使用(非常詳細的配置過程)

http://www.blogjava.net/hyljava/archive/2013/02/22/spring-jdbctemplate.html

【2】baidu: JdbcTemplae使用入門&&Spring三種連接池配置&&Spring配置文件引用外部properties文件

【3】Spring：JdbcTemplate使用指南

http://www.cnblogs.com/chenying99/archive/2012/08/06/2625936.html

【4】Spring源碼學習-bean加載

http://www.blogjava.net/yangaiyou/archive/2014/08/29/417486.html

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