项目源码:https://github.com/dillyant/JAVA/tree/master/springmybatis
准备环境: mysql数据库,测试数据库yanwftest
数据准备:
CREATE TABLE `user_t` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`user_name` varchar(40) NOT NULL,
`password` varchar(255) NOT NULL,
`age` int(4) NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8;
INSERT INTO `user_t` VALUES ('1', '测试', 'sfasgfaf', '24');
- 创建java普通项目 File->New->Project...,选择Java Project
2.项目名称自定义,以springmybatis为例,点击Finish。
3.目录结构如下
4. 调整目录结构
选择当前项目,右键New->Folder,添加lib目录
选择当前项目,右键New->Source Folder,添加resources
修改目录结构如下:
5.lib目录下添加jar包,jar获取可以从http://mvnrepository.com/maven仓库获取, 选中jar包右键,Build Path->Add To Build Path
6.src目录下添加源码jar包目录结构
7.添加源码
包名:com.dillyant.model
类文件名:User.java
package
com.dillyant.model;
public
class
User {
private Integer
id;
private String
userName;
private String
password;
private Integer
age;
public Integer getId() {
return
id;
}
public
void setId(Integer
id) {
this.id
=
id;
}
public String getUserName() {
return
userName;
}
public
void setUserName(String
userName) {
this.userName
=
userName ==
null ?
null :
userName.trim();
}
public String getPassword() {
return
password;
}
public
void setPassword(String
password) {
this.password
=
password ==
null ?
null :
password.trim();
}
public Integer getAge() {
return
age;
}
public
void setAge(Integer
age) {
this.age
=
age;
}
}
包名:com.dillyant.dao
类文件名:UserMapper.java
package
com.dillyant.dao;
import
com.dillyant.model.User;
public
interface
UserMapper {
User selectByPrimaryKey(Integer
id);
}
包名:
com.dillyant.dao
XML文件名:UserMapper.xml
<?xml
version="1.0"
encoding="UTF-8"?>
<!DOCTYPE
mapper
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper
namespace="com.dillyant.dao.UserMapper">
<select
id="selectByPrimaryKey"
parameterType="java.lang.Integer"
resultType="com.dillyant.model.User">
select
id, user_name, password, age
from user_t
where id =
#{id,jdbcType=INTEGER}
</select>
</mapper>
包名:
com.dillyant.service
类文件名:IUserService.java
package
com.dillyant.service;
import
com.dillyant.model.User;
public
interface
IUserService {
public
User getUserById(int
userId);
}
包名:
com.dillyant.service.impl
类文件名:UserServiceImpl.java
package com.dillyant.service.impl;
import javax.annotation.Resource;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import com.dillyant.dao.UserMapper;
import com.dillyant.model.User;
import com.dillyant.service.IUserService;
@Service("userService")
@Transactional(readOnly=false)
public class UserServiceImpl implements IUserService {
@Resource
private UserMapper userMapper;
@Override
public User getUserById(int userId) {
return this.userMapper.selectByPrimaryKey(userId);
}
}
包名:
com.dillyant.main
类文件名:Main.java
package
com.dillyant.main;
import
org.apache.log4j.Logger;
import
org.springframework.context.ApplicationContext;
import
org.springframework.context.support.ClassPathXmlApplicationContext;
import
com.alibaba.fastjson.JSON;
import
com.dillyant.model.User;
import
com.dillyant.service.impl.UserServiceImpl;
public
class Main {
private
static
Logger
logger = Logger.getLogger(Main.class);
private
static
ApplicationContext
ac;
public
static
void
main(String[]
args) {
ac
=
new ClassPathXmlApplicationContext("spring-mybatis.xml");
UserServiceImpl
iuser
= (UserServiceImpl)
ac.getBean("userService");
User
user =
iuser.getUserById(1);
logger.info(JSON.toJSONString(user));
}
}
8 resouces目录下添加配置文件
目录结构如下:
数据库配置文件
jdbc.properties
driver=com.mysql.jdbc.Driver
url=jdbc:mysql://127.0.0.1:3306/yanwftest
username=test
password=test
#定义初始连接数
initialSize=0
#定义最大连接数
maxActive=20
#定义最大空闲
maxIdle=20
#定义最小空闲
minIdle=1
#定义最长等待时间
maxWait=60000
日志配置文件
log4j.properties
#定义LOG输出级别
log4j.rootLogger=debug,Console,File
#定义日志输出目的地为控制台
log4j.appender.Console=org.apache.log4j.ConsoleAppender
log4j.appender.Console.Target=System.out
#可以灵活地指定日志输出格式,下面一行是指定具体的格式
log4j.appender.Console.layout =
org.apache.log4j.PatternLayout
log4j.appender.Console.layout.ConversionPattern=[%c]
-
%m%n
#文件大小到达指定尺寸的时候产生一个新的文件
log4j.appender.File =
org.apache.log4j.RollingFileAppender
#指定输出目录
log4j.appender.File.File =
logs/sm.log
#定义文件最大大小
log4j.appender.File.MaxFileSize =
10MB
# 输出所以日志,如果换成DEBUG表示输出DEBUG以上级别日志
log4j.appender.File.Threshold =
ALL
log4j.appender.File.layout =
org.apache.log4j.PatternLayout
log4j.appender.File.layout.ConversionPattern =[%p]
[%d{yyyy-MM-dd
HH\:mm\:ss}][%c]%m%n
spring mybatis集成配置文件
spring-mybatis.xml
<?xml
version="1.0"
encoding="UTF-8"?>
<beans
xmlns="http://www.springframework.org/schema/beans"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:mybatis="http://mybatis.org/schema/mybatis-spring"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.1.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-4.1.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-4.1.xsd
http://mybatis.org/schema/mybatis-spring
http://mybatis.org/schema/mybatis-spring.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.1.xsd">
<!-- 自动扫描 -->
<context:component-scan
base-package="com.dillyant.service.impl"
/>
<!-- 引入配置文件 -->
<context:property-placeholder
location="classpath:jdbc.properties"
/>
<bean
id="dataSource"
class="org.apache.commons.dbcp.BasicDataSource"
destroy-method="close">
<property
name="driverClassName"
value="${driver}"
/>
<property
name="url"
value="${url}"
/>
<property
name="username"
value="${username}"
/>
<property
name="password"
value="${password}"
/>
<!-- 初始化连接大小 -->
<property
name="initialSize"
value="${initialSize}"></property>
<!-- 连接池最大数量 -->
<property
name="maxActive"
value="${maxActive}"></property>
<!-- 连接池最大空闲 -->
<property
name="maxIdle"
value="${maxIdle}"></property>
<!-- 连接池最小空闲 -->
<property
name="minIdle"
value="${minIdle}"></property>
<!-- 获取连接最大等待时间 -->
<property
name="maxWait"
value="${maxWait}"></property>
</bean>
<!-- spring和MyBatis完美整合,不需要mybatis的配置映射文件 -->
<bean
id="sqlSessionFactory"
class="org.mybatis.spring.SqlSessionFactoryBean">
<property
name="dataSource"
ref="dataSource"
/>
<!-- 自动扫描mapping.xml文件 -->
<property
name="mapperLocations"
value="classpath:com/dillyant/dao/*.xml"></property>
</bean>
<!-- DAO接口所在包名,Spring会自动查找其下的类 -->
<bean
class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property
name="basePackage"
value="com.dillyant.dao"
/>
<property
name="sqlSessionFactoryBeanName"
value="sqlSessionFactory"></property>
</bean>
<!-- (事务管理)transaction manager, use JtaTransactionManager for global
tx -->
<bean
id="transactionManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property
name="dataSource"
ref="dataSource"
/>
</bean>
<!-- 在Spring中使用基于注解的事务管理特性 -->
<tx:annotation-driven
transaction-manager="transactionManager"
proxy-target-class="true"
/>
</beans>
9。运行测试成功。
10。导出可执行jar包
选中项目,右键Export,选择Runnable JAR file
Launch configuration选择当前项目的main, Export destination自定义, Library handling选择第三项,其他两项测试都未通过。
导出目录结果如下:
(windows 平台)
使用java 命令执行该jar包,如下:
结果如下,测试通过。
linux 平台
使用java 命令执行该jar包,如下:
结果如下,测试通过。