mybatis物理分页的实现
mybatis物理分页的实现
mybatis逻辑分页物理分页spring+mybatis
下面是所有的代码：
Java代码 收藏代码
package com.xxyd.mybatis.pojo;
import java.io.Serializable;
/**
* 实体类
* @author dove
*
*/
public class TestEntity implements Serializable{
private static final long serialVersionUID = -5849200248418883686L;
private int id ;
private String name;
private int no;
private int sex;
private int age;
private String count;
private String school;
private int weight;
private int height;
private String habbit;
private String memo;
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 int getNo() {
return no;
}
public void setNo(int no) {
this.no = no;
}
public int getSex() {
return sex;
}
public void setSex(int sex) {
this.sex = sex;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public String getCount() {
return count;
}
public void setCount(String count) {
this.count = count;
}
public String getSchool() {
return school;
}
public void setSchool(String school) {
this.school = school;
}
public int getWeight() {
return weight;
}
public void setWeight(int weight) {
this.weight = weight;
}
public int getHeight() {
return height;
}
public void setHeight(int height) {
this.height = height;
}
public String getHabbit() {
return habbit;
}
public void setHabbit(String habbit) {
this.habbit = habbit;
}
public String getMemo() {
return memo;
}
public void setMemo(String memo) {
this.memo = memo;
}
@Override
public String toString() {
return "TestEntity [id=" + id + ", name=" + name + ", no=" + no
+ ", sex=" + sex + ", age=" + age + ", count=" + count
+ ", school=" + school + ", weight=" + weight + ", height="
+ height + ", habbit=" + habbit + ", memo=" + memo + "]";
}
}
2、DAO接口
Java代码 收藏代码
package com.xxyd.mybatis.dao;
import java.util.List;
import org.apache.ibatis.annotations.Param;
import com.xxyd.mybatis.pojo.TestEntity;
/**
* dao接口
* @author dove
*
*/
public interface TestMapper {
public void createTestEntity(TestEntity entity);
public List getTestEntityByPager(@Param("pageNo")int pageNo,@Param("pageSize") int pageSize);
public List getListTestEntity();
public int getTotalCount(@Param("pageNo")int pageNo,@Param("pageSize") int pageSize);
public void updateTestEntity(TestEntity entity);
public void deleteTestEntityById(@Param("id") int id);
}
3、映射文件TestMapper.xml
Xml代码 收藏代码
insert into test_test(name,no,sex, age,count,school,weight,height,habbit,memo)
values(#{name},#{no},#{sex},#{age},#{count},#{school},#{weight},#{height},#{habbit},#{memo});
update test_test
name = #{name , jdbcType=VARCHAR},
no = #{no , jdbcType=INTEGER},
sex = #{sex , jdbcType=INTEGER},
age = #{age , jdbcType=INTEGER},
count = #{count , jdbcType=VARCHAR},
school = #{school , jdbcType=VARCHAR},
weight = #{weight , jdbcType=INTEGER},
height = #{height , jdbcType=INTEGER},
habbit = #{habbit , jdbcType=VARCHAR},
memo = #{memo , jdbcType=VARCHAR},
where id = #{id ,jdbcType=INTEGER}
delete from test_test where id = #{id}
4、mybatis主配置文件mybatis-config.xml
Xml代码 收藏代码
6、jdbc.properties文件
Xml代码 收藏代码
driverClass=com.mysql.jdbc.Driver
url=jdbc\:mysql\://127.0.0.1\:3306/student_manager
username=root
password=123456
7、spring配置文件部分配置
Xml代码 收藏代码
7、最后，测试类：
Java代码 收藏代码
package com.xxyd.mybatis.test;
import java.util.List;
import org.apache.ibatis.session.RowBounds;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;
import org.junit.Test;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import com.xxyd.mybatis.pojo.TestEntity;
public class TestMapperTest {
//private SqlSessionFactory sessionFactory;
private static SqlSessionFactoryBuilder builder;
private static SqlSessionFactory sessionFactory;
static {
builder = new SqlSessionFactoryBuilder();
sessionFactory = builder.build(Thread.currentThread()
.getContextClassLoader()
.getResourceAsStream("mybatis-config.xml"));
}
/**
* @param args
*/
public static void main(String[] args) {
ClassPathXmlApplicationContext ctx = new ClassPathXmlApplicationContext("applicationContext.xml");
TestMapperTest TestMapperTest = (TestMapperTest)ctx.getBean("TestMapperTest");
TestMapperTest.getList();
}
@Test
public void getList(){
SqlSession sqlSession = sessionFactory.openSession();
//TestEntity entity = new TestEntity();
List list = sqlSession.selectList("com.xxyd.mybatis.dao.TestMapper.getListTestEntity", TestEntity.class, new RowBounds(0, 200));
sqlSession.commit();
sqlSession.close();
for (TestEntity testEntity : list) {
System.out.println(testEntity.toString());
}
}
//public SqlSessionFactory getSessionFactory() {
// return sessionFactory;
//}
//public void setSessionFactory(SqlSessionFactory sessionFactory) {
// this.sessionFactory = sessionFactory;
//}
}
能够成功运行的前提是，你已经将mybatis+spring的运行环境搭建好了，并且将mybatis-pager-1.0.0.jar也放置到classpath下。之后，直接运行测试类就可以了。
注意1：mybatis-pager-1.0.0.jar该包就是浪费我昨天一整天也没整出来的分页jar包，里面目前只适用于mysql和oracle两种数据库使用，其他的数据库还在研究中。
注意2：List list = sqlSession.selectList(“com.xxyd.mybatis.dao.TestMapper.getListTestEntity”, TestEntity.class, new RowBounds(0, 200));
第一个参数标准写法是TestMapper.xml的名称空间+select的对应id（建议sql映射文件中的sql语句结尾不要有分号）；第二个参数是：实体类，当然也可以使字符串，只有是Object类型的就可以，目前还没发现什么异常，或许我研究的较为浅显的原因；第三个参数则是需要分页的数据。
下载 mybatis-pager-1.0.0.jar：https://dove19900520.iteye.com/blog/1724414