1.新建项目
2.导入jar
2.创建测试数据库及数据
CREATE DABABASE springjdbc
CREATE TABLE `ar_role` (
`rid` int(10) NOT NULL AUTO_INCREMENT,
`rname` varchar(20) DEFAULT NULL COMMENT '角色名',
`alias` varchar(20) DEFAULT NULL COMMENT '别名',
PRIMARY KEY (`rid`)
) ENGINE=InnoDB AUTO_INCREMENT=6 DEFAULT CHARSET=utf8;
-- ----------------------------
-- Records of ar_role
-- ----------------------------
INSERT INTO `ar_role` VALUES ('1', '系统管理员', 'admin');
INSERT INTO `ar_role` VALUES ('2', '调度员', 'dispa');
INSERT INTO `ar_role` VALUES ('3', 'test1', 'test1');
INSERT INTO `ar_role` VALUES ('4', 'test2', 'test2');
INSERT INTO `ar_role` VALUES ('5', 'test3', 'test3');
3.编写pojo
package com.linixn.spring.pojo;
public class Role {
private Integer rid;
private String rname;
private String alias;
public Role() {
super();
// TODO Auto-generated constructor stub
}
public Integer getRid() {
return rid;
}
public void setRid(Integer rid) {
this.rid = rid;
}
public String getRname() {
return rname;
}
public void setRname(String rname) {
this.rname = rname;
}
public String getAlias() {
return alias;
}
public void setAlias(String alias) {
this.alias = alias;
}
@Override
public String toString() {
return "Role [rid=" + rid + ", rname=" + rname + ", alias=" + alias + "]";
}
}
4.编写RoleDao以及实现类RoleDaoImpl
package com.linixn.spring.dao;
import java.util.List;
import com.linixn.spring.pojo.Role;
public interface RoleDao {
// 添加
void save(Role role);
//删除
void delete(Integer id);
//修改
void update(Role role);
//单个查询
Role getById(Integer id);
//查询所有
List<Role> getAll();
//查询数据条数
int getTotalCount();
}
package com.linixn.spring.dao;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.List;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.RowMapper;
import com.linixn.spring.pojo.Role;
public class RoleDaoImpl implements RoleDao{
private JdbcTemplate jt;
@Override
public void save(Role role) {
String sql= "insert into ar_role(rname,alias) values(?,?)";
jt.update(sql,role.getRname(),role.getAlias());
}
@Override
public void delete(Integer id) {
String sql ="delete from ar_role where rid=? ";
jt.update(sql,id);
}
@Override
public void update(Role role) {
String sql ="update ar_role set rname=?,alias =? where rid =?";
jt.update(sql,role.getRname(),role.getAlias(),role.getRid());
}
@Override
public Role getById(Integer id) {
String sql ="select * from ar_role where rid=?";
//RowMapper<Role> 匿名类的实现
Role role=jt.queryForObject(sql, new RowMapper<Role>(){
@Override
public Role mapRow(ResultSet rs, int index) throws SQLException {
return mapRowHander(rs);
}
},id);
return role;
}
@Override
public List<Role> getAll() {
String sql ="select * from ar_role ";
List<Role> list=jt.query(sql, new RowMapper<Role>(){
@Override
public Role mapRow(ResultSet rs, int index) throws SQLException {
return mapRowHander(rs);
}
});
return list;
}
@Override
public int getTotalCount() {
String sql ="select count(1) from ar_role";
Integer count=jt.queryForObject(sql,Integer.class);
return count;
}
//
private Role mapRowHander(ResultSet rs) throws SQLException {
Role role=new Role();
role.setRid(rs.getInt("rid"));
role.setRname(rs.getString("rname"));
role.setAlias(rs.getString("alias"));
return role;
}
}
5.新建jdbc配置db.properties
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/springjdbc
jdbc.username=root
jdbc.password=root
6.新建application.xml配置数据源
<?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:p="http://www.springframework.org/schema/p"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:centext="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.2.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.2.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-4.2.xsd ">
<!-- 加载文件 -->
<centext:property-placeholder location="classpath:db.properties"/>
<!-- spring管理c3p0数据源 -->
<bean name="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="${jdbc.driver}"></property>
<property name="jdbcUrl" value="${jdbc.url}"></property>
<property name="user" value="${jdbc.username}"></property>
<property name="password" value="${jdbc.password}"></property>
</bean>
<!-- Jdbctemplate -->
<bean name="jdbctemplate" class="org.springframework.jdbc.core.JdbcTemplate">
<property name="dataSource" ref="dataSource"></property>
</bean>
<!-- 依赖注入 -->
<bean name="roleDao" class="com.linixn.spring.dao.RoleDaoImpl">
<property name="jt" ref="jdbctemplate"></property>
</bean>
</beans>
7.添加日志配置log4j.properties
# Global logging configuration
log4j.rootLogger=info, stdout
# Console output...
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%5p [%t] - %m%n
8.测试
package com.linixn.spring.test;
import java.util.List;
import javax.annotation.Resource;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import com.linixn.spring.dao.RoleDao;
import com.linixn.spring.pojo.Role;
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("classpath:applicationContext.xml")
public class TestJdbctemplate {
@Resource(name="roleDao")
private RoleDao roleDao;
// 添加
@Test
public void testSave() {
Role role=new Role();
role.setRname("zhangsan");
role.setAlias("test5");
roleDao.save(role);
}
// 删除
@Test
public void testDelete() {
roleDao.delete(2);
}
// 修改
@Test
public void testupdate() {
Role role= new Role();
role.setRid(2);
role.setRname("wangwu");
role.setAlias("wuwu");
roleDao.update(role);
}
//查询
@Test
public void testSelect() {
Role role=roleDao.getById(3);
System.out.println(role);
}
// 查询
@Test
public void testAllSelect() {
List<Role> roles=roleDao.getAll();
System.out.println(roles);
}
@Test
public void testCount() {
System.out.print(roleDao.getTotalCount());
}
}