:
mybatis的普通使用
资源介绍:
mybatis的普通使用，mybatis作用于mapper层和entity层，这里的mapper类似于servlet时的dao层
package org.example.common;
import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;
import java.io.IOException;
import java.io.InputStream;
public class MbSqlSessionFactory {
//1 为了同一个事务【线程中】对数据库n次操作 建立在对同一次数据库[SqlSession]的连接之上
private static ThreadLocal local;
//2 session 工厂[myatis 框架提供]
private static SqlSessionFactory factory;
static{
local = new ThreadLocal();
//1 丛配置文件中 读取 对数据库的连接的信息
InputStream in = null;
try {
in = Resources.getResourceAsStream("mb.xml");
//通过读出来的 连接信息 去初始化 session工厂
factory = new SqlSessionFactoryBuilder().build(in);
} catch (Exception e) {
e.printStackTrace();
}finally{
if(in!=null){
try {
in.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
//获得session的方法
public static SqlSession getSession(){
// 1 首先从线程容器中取
SqlSession session = local.get();
if(session==null){
session = factory.openSession();
local.set(session);
}
return session;
}
//关闭session 方法
public static void closeSession(){
SqlSession session = local.get();
if(session!=null){
session.close();
local.remove();
local.set(null);
}
}
}
资源文件列表:
day2024-8-28.zip 大约有77个文件
day2024-8-28/.gitignore 490B
day2024-8-28/.idea/- day2024-8-28/.idea/.gitignore 184B
- day2024-8-28/.idea/compiler.xml 609B
- day2024-8-28/.idea/dataSources.local.xml 1002B
- day2024-8-28/.idea/dataSources.xml 530B
- day2024-8-28/.idea/dataSources/
- day2024-8-28/.idea/dataSources/464f22dc-e7b6-4e4c-b80d-b78a2e809dd6.xml 734.51KB
- day2024-8-28/.idea/dataSources/464f22dc-e7b6-4e4c-b80d-b78a2e809dd6/
- day2024-8-28/.idea/dataSources/464f22dc-e7b6-4e4c-b80d-b78a2e809dd6/storage_v2/
- day2024-8-28/.idea/dataSources/464f22dc-e7b6-4e4c-b80d-b78a2e809dd6/storage_v2/_src_/
- day2024-8-28/.idea/dataSources/464f22dc-e7b6-4e4c-b80d-b78a2e809dd6/storage_v2/_src_/schema/
- day2024-8-28/.idea/dataSources/464f22dc-e7b6-4e4c-b80d-b78a2e809dd6/storage_v2/_src_/schema/information_schema.FNRwLQ.meta 76B
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- day2024-8-28/.idea/dataSources/464f22dc-e7b6-4e4c-b80d-b78a2e809dd6/storage_v2/_src_/schema/sys.zb4BAA.meta 61B
- day2024-8-28/.idea/dataSources/464f22dc-e7b6-4e4c-b80d-b78a2e809dd6/storage_v2/_src_/schema/sys.zb4BAA.zip 442.36KB
- day2024-8-28/.idea/encodings.xml 267B
- day2024-8-28/.idea/jarRepositories.xml 864B
- day2024-8-28/.idea/misc.xml 541B
- day2024-8-28/.idea/uiDesigner.xml 8.71KB
- day2024-8-28/.idea/workspace.xml 5.81KB
- day2024-8-28/logs/
- day2024-8-28/logs/server.log 3.57KB
- day2024-8-28/pom.xml 3.46KB
- day2024-8-28/src/
- day2024-8-28/src/main/
- day2024-8-28/src/main/java/
- day2024-8-28/src/main/java/org/
- day2024-8-28/src/main/java/org/example/
- day2024-8-28/src/main/java/org/example/common/
- day2024-8-28/src/main/java/org/example/common/MbSqlSessionFactory.java 1.86KB
- day2024-8-28/src/main/java/org/example/controller/
- day2024-8-28/src/main/java/org/example/controller/UserServlet.java 128B
- day2024-8-28/src/main/java/org/example/entity/
- day2024-8-28/src/main/java/org/example/entity/TbUser.java 279B
- day2024-8-28/src/main/java/org/example/Main.java 138B
- day2024-8-28/src/main/java/org/example/mapper/
- day2024-8-28/src/main/java/org/example/mapper/TbUserMapper.java 333B
- day2024-8-28/src/main/java/org/example/service/
- day2024-8-28/src/main/java/org/example/service/TbUserService.java 1.35KB
- day2024-8-28/src/main/resources/
- day2024-8-28/src/main/resources/log4j.properties 601B
- day2024-8-28/src/main/resources/mapper/
- day2024-8-28/src/main/resources/mapper/TbUserMapper.xml 638B
- day2024-8-28/src/main/resources/mb.xml 826B
- day2024-8-28/src/main/webapp/
- day2024-8-28/src/main/webapp/WEB-INF/
- day2024-8-28/src/main/webapp/WEB-INF/web.xml 412B
- day2024-8-28/src/test/
- day2024-8-28/src/test/java/
- day2024-8-28/src/test/java/UserServiceTest.java 1.45KB
- day2024-8-28/target/
- day2024-8-28/target/classes/
- day2024-8-28/target/classes/log4j.properties 601B
- day2024-8-28/target/classes/mapper/
- day2024-8-28/target/classes/mapper/TbUserMapper.xml 638B
- day2024-8-28/target/classes/mb.xml 826B
- day2024-8-28/target/classes/org/
- day2024-8-28/target/classes/org/example/
- day2024-8-28/target/classes/org/example/common/
- day2024-8-28/target/classes/org/example/common/MbSqlSessionFactory.class 2.03KB
- day2024-8-28/target/classes/org/example/controller/
- day2024-8-28/target/classes/org/example/controller/UserServlet.class 318B
- day2024-8-28/target/classes/org/example/entity/
- day2024-8-28/target/classes/org/example/entity/TbUser.class 2.25KB
- day2024-8-28/target/classes/org/example/Main.class 540B
- day2024-8-28/target/classes/org/example/mapper/
- day2024-8-28/target/classes/org/example/mapper/TbUserMapper.class 454B
- day2024-8-28/target/classes/org/example/service/
- day2024-8-28/target/classes/org/example/service/TbUserService.class 1.61KB
- day2024-8-28/target/generated-sources/
- day2024-8-28/target/generated-sources/annotations/
- day2024-8-28/target/generated-test-sources/
- day2024-8-28/target/generated-test-sources/test-annotations/
- day2024-8-28/target/test-classes/
- day2024-8-28/target/test-classes/UserServiceTest.class 2.27KB
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