识hibernate_01

 1 <?xml version="1.0" encoding="UTF-8" ?>
 2 <!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
 3 "http://mybatis.org/dtd/mybatis-3-config.dtd">
 4 <configuration>
 5      <!-- 顾名思义类型的别名,即 Person 代指com.sunmap.model.Person-->
 6     <typeAliases>
 7         <typeAlias alias="Person" type="com.sunmap.model.Person" />
 8         <typeAlias alias="Article" type="com.sunmap.model.Article" />
 9     </typeAliases>
10     
11     <environments default="development">
12         <environment id="development">
13             <transactionManager type="JDBC" />
14             <dataSource type="POOLED">
15                 <property name="driver" value="org.postgresql.Driver" />
16                 <property name="url"
17                     value="jdbc:postgresql://192.168.5.11:5432/poidata" />
18                 <property name="username" value="postgres" />
19                 <property name="password" value="123456" />
20             </dataSource>
21         </environment>
22     </environments>
23     
24     <!--  -->
25     <mappers>
26         <mapper resource="com/sunmap/model/Person.xml" />
27     </mappers>
28 
29 </configuration>

package com.sunmap.dao;

import java.util.List;

import com.sunmap.model.Article;
import com.sunmap.model.Person;

/**
 * 
 * 定义的接口
 * */
public interface IPersonOperation {

    public Person selectPersonByID(int id);
    
    public List<Person> selectPersonByName(String name);
    
    public void addPerson(Person p);
    
    public List<Person> selectPerson();
    
    public void updatePerson(Person p);

    public void deletePersonById(Person p);
    
    public List<Article> getUserArticle(int id);
}

package com.sunmap.model;

public class Person {
    private int id;
    private String name;
    private int age;

    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 getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }
}

package com.sunmap.dao;

import static org.junit.Assert.*;

import java.io.IOException;
import java.io.Reader;
import java.util.List;

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 org.junit.Test;

import com.sunmap.model.Article;
import com.sunmap.model.Person;

public class TestIPersonOperation {

    @Test
    public void test() {
//        fail("Not yet implemented");
        try {
            Reader reader = Resources.getResourceAsReader("config/Configuration.xml");
            SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(reader);  

            SqlSession session = sqlSessionFactory.openSession();
            IPersonOperation iPersonOperation = session.getMapper(IPersonOperation.class);
            
            
//            List<Article> list = iPersonOperation.getUserArticle(1);
//            System.out.println(list.size());
            /**
             * 删除
             * */
//            Person pp = new Person();
//            pp.setId(2);
//            iPersonOperation.deletePersonById(pp);
            /**
             * 更新
             * */
//            Person pp = new Person();
//            pp.setId(1);
//            pp.setName("update");
//            pp.setAge(234);
//            iPersonOperation.updatePerson(pp);
            /**
             * 添加数据(主键id自动增长,这个的需要创建一个序列)
             * 
             * CREATE SEQUENCE test_c_id_seq
                  INCREMENT 1
                  MINVALUE 1
                  MAXVALUE 9223372036854775807
                  START 1
                  CACHE 1;
                ALTER TABLE test_c_id_seq
                  OWNER TO postgres;
                  
                  然后关联上
                  alter table test_c alter column id set default nextval(‘test_c_id_seq‘);
                  
                  这个块其实挺恶心的～
             * */
//            Person pp = new Person();
//            pp.setName("sadfa");
//            pp.setAge(24);
//            iPersonOperation.addPerson(pp);
//            
//            
//            //提交事物
            session.commit();
            //查询
//             List<Person> personList = iPersonOperation.selectPerson();
//             for(Person p:personList){
//                 System.out.println(p.getName()+" : "+p.getAge());
//             }
            
            /**
             * 通过id查询
             * */
//            Person person = iPersonOperation.selectPersonByID(1);
//             System.out.println(person.getName()+":"+person.getAge());
             /**
              * 模糊查询（返回List集合）
              * 
              * 
              * 这块有两个需要注意的地方
              * 
              * 1. ‘%${_parameter}%‘  ,单引号和#改成$
              * 2. 获取参数时：${_parameter}
              * 
              * 即：不管你的参数是什么，都要改成"_parameter"；
              * */
//             List<Person> personList = iPersonOperation.selectPersonByName("sa");
//             for(Person p:personList){
//                 System.out.println(p.getName()+" : "+p.getAge());
//             }
             
             //关闭session
             session.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
        
    }
    
}