Spring整合JDBC实现简单的增删改:
1.导入Spring的包和数据库的驱动包;
2.选择一个数据源(dbcp和C3P0)
3.导入数据源的包(这里我们使用dbcp)
<span style="font-family:FangSong_GB2312;font-size:14px;">commons-pool-1.5.6.jar 、commons-dbcp-1.4.jar(jdk6+)</span>
4.在beans.xml中创建dataSource数据源
5.创建一个jdbc.properties文件存储数据库连接信息
6.在beans.xml中导入相应的jdbc.properties文件
<span style="font-family:FangSong_GB2312;font-size:14px;"><context:property-placeholder location="jdbc.properties" /> </span>
7.写相应的DAO,并且为这个DAO创建一个JdbcTemplate对象,通过JdbcTemplate对象可以方便的完成对数据库的操作
8.为DAO注入相应的DateSource并且创建JdbcTemplate
/** * Set the JDBC DataSource to obtain connections from. */ @Resource public void setDataSource(DataSource dataSource) { JdbcTemplate=new JdbcTemplate(dataSource); }
9.完成数据对象的添加
具体实现过程:
XML配置:
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="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" xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd"> <!-- 打开Spring的Annotation的支持 --> <context:annotation-config /> <!-- 设定Spring去哪些包中找Annotation --> <context:component-scan base-package="org.oms.spring" /> <!-- 创建数据源 --> <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close"> <property name="driverClassName" value="${jdbc.driverClassName}" /> <property name="url" value="${jdbc.url}" /> <property name="username" value="${jdbc.username}" /> <property name="password" value="${jdbc.password}" /> </bean> <!-- 导入src下的jdbc.properties --> <context:property-placeholder location="jdbc.properties" /> </beans>
jdbc.properties
jdbc.driverClassName=com.mysql.jdbc.Driver jdbc.url=jdbc:mysql://localhost:3306/dbname jdbc.username=root jdbc.password=root
Mode类,User
package org.oms.spring.model; import java.util.Date; public class User { private int id; private String username; private String password; private Group group; private int age; private Date birthDay; private Date createDate; public int getId() { return id; } public void setId(int id) { this.id = id; } public int getAge() { return age; } public void setAge(int age) { this.age = age; } public Date getBirthDay() { return birthDay; } public void setBirthDay(Date birthDay) { this.birthDay = birthDay; } public Date getCreateDate() { return createDate; } public void setCreateDate(Date createDate) { this.createDate = createDate; } public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } public Group getGroup() { return group; } public void setGroup(Group group) { this.group = group; } public User() { super(); } public User(String username, String password, int age, Date birthDay, Date createDate) { super(); this.username = username; this.password = password; this.age = age; this.birthDay = birthDay; this.createDate = createDate; } @Override public String toString() { return "User [id=" + id + ", username=" + username + ", password=" + password + ", group=" + group + ", age=" + age + ", birthDay=" + birthDay + ", createDate=" + createDate + "]"; } }
Group类
package org.oms.spring.model; public class Group { private int id; private String name; public int getId() { return id; } public void setId(int id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public Group(String name) { super(); this.name = name; } public Group() { super(); } @Override public String toString() { return "Group [id=" + id + ", name=" + name + "]"; } }
dao类包括接口:
package org.oms.spring.dao; import java.util.List; import org.oms.spring.model.User; public interface IUserDao { public void add(User user,int gid); public void update(User user,int gid); public void delete(int id); public User load(int id); public List<User> list(String sql); } package org.oms.spring.dao; import java.util.List; import javax.annotation.Resource; import javax.sql.DataSource; import org.oms.spring.model.User; import org.springframework.jdbc.core.JdbcTemplate; import org.springframework.stereotype.Repository; @Repository("userJdbcDao") public class UserDao implements IUserDao { private JdbcTemplate JdbcTemplate; /** * Set the JDBC DataSource to obtain connections from. */ @Resource public void setDataSource(DataSource dataSource) { JdbcTemplate=new JdbcTemplate(dataSource); } @Override public void add(User user,int gid) { JdbcTemplate.update("insert into user(username,password,gid,age,birthday,createdate) value (?,?,?,?,?,?)", user.getUsername(),user.getPassword(),gid,user.getAge(),user.getBirthDay(),user.getCreateDate()); } @Override public void update(User user,int gid) { JdbcTemplate.update("update user set username=?,password=?,gid=?,age=?,birthday=?,createdate=? where id=?", user.getUsername(),user.getPassword(),gid,user.getAge(),user.getBirthDay(),user.getCreateDate(),user.getId()); } @Override public void delete(int id) { JdbcTemplate.update("delete from user where id =?",id); } @Override public User load(int id) { return null; } @Override public List<User> list(String sql) { return null; } }
GroupDao类
package org.oms.spring.dao; import org.oms.spring.model.Group; public interface IGroupDao { public void add(Group group); } package org.oms.spring.dao; import java.sql.PreparedStatement; import java.sql.SQLException; import javax.annotation.Resource; import javax.sql.DataSource; import org.oms.spring.model.Group; import org.springframework.jdbc.core.JdbcTemplate; import org.springframework.jdbc.core.PreparedStatementCreator; import org.springframework.jdbc.support.GeneratedKeyHolder; import org.springframework.jdbc.support.KeyHolder; import org.springframework.stereotype.Repository; import com.mysql.jdbc.Connection; @Repository("groupJdbcDao") public class GroupDao implements IGroupDao { private JdbcTemplate JdbcTemplate; /** * Set the JDBC DataSource to obtain connections from. */ @Resource public void setDataSource(DataSource dataSource) { JdbcTemplate = new JdbcTemplate(dataSource); } @Override public void add(final Group group) { /** * 通过以下方法可以添加一个对象,并且获取这个对象中自动递增的ID */ KeyHolder keyHolder = new GeneratedKeyHolder(); JdbcTemplate.update(new PreparedStatementCreator() { @Override public PreparedStatement createPreparedStatement( java.sql.Connection con) throws SQLException { String INSERT_SQL = "insert into `group`(name) value(?)"; PreparedStatement ps = con.prepareStatement(INSERT_SQL, new String[] {"id"}); ps.setString(1, group.getName()); return ps; } }, keyHolder); group.setId(keyHolder.getKey().intValue()); } }
测试方法类:
package org.oms.spring.test; import static org.junit.Assert.*; import java.util.Date; import javax.annotation.Resource; import org.junit.Test; import org.junit.runner.RunWith; import org.oms.spring.dao.IGroupDao; import org.oms.spring.dao.IUserDao; import org.oms.spring.model.Group; import org.oms.spring.model.User; import org.springframework.test.context.ContextConfiguration; import org.springframework.test.context.junit4.SpringJUnit4ClassRunner; /** * 当使用了以下注释之后,就可以直接在Test中进行依赖注入 * * @author sunlight * */ // 让Junit运行在Spring的测试环境中 @RunWith(SpringJUnit4ClassRunner.class) // 加载beans.xml文件 @ContextConfiguration("/beans.xml") public class TestJdbc { @Resource(name = "userJdbcDao") private IUserDao userJdbcDao; @Resource(name="groupJdbcDao") private IGroupDao groupJdbcDao; @Test public void testAdd() { Group group=new Group("test1"); groupJdbcDao.add(group); System.out.println(group.getId()); User user = new User("我是Spring","123", 20, new Date(), new Date()); userJdbcDao.add(user,group.getId()); } @Test public void testUpdate() { User user = new User("Spring","123", 20, new Date(), new Date()); user.setId(2); userJdbcDao.update(user,1); } @Test public void testDel() { userJdbcDao.delete(2); } }
测试结果图:
数据库表:
CREATE TABLE `User` ( `id` int(11) unsigned NOT NULL AUTO_INCREMENT COMMENT 'Id主键', `username` varchar(100) NOT NULL DEFAULT '' COMMENT '姓名', `password` varchar(100) DEFAULT NULL COMMENT '密码', `gid` int(11) DEFAULT NULL COMMENT '组ID', `age` int(11) DEFAULT '18' COMMENT '年龄', `birthday` date DEFAULT NULL COMMENT '生日', `createdate` datetime DEFAULT NULL COMMENT '创建时间', PRIMARY KEY (`id`) ) ENGINE=InnoDB AUTO_INCREMENT=4 DEFAULT CHARSET=utf8;
CREATE TABLE `Group` ( `id` int(11) unsigned NOT NULL AUTO_INCREMENT, `name` varchar(100) NOT NULL DEFAULT '' COMMENT '组名称', PRIMARY KEY (`id`) ) ENGINE=InnoDB AUTO_INCREMENT=5 DEFAULT CHARSET=utf8;
数据表中中文乱码,瞌睡了2014年09月18日00:36:54 下次说明!
时间: 2024-11-04 19:15:01