mybaits入门（CURD）

1、首先建立工程导入mysql驱动jar包机mybatis-3.1.1.jar

2、编辑配置文件config.properties,mybatis-config.xml,StudentMapper.xml

config.properties

[java]  view plain copy

1. driver=com.mysql.jdbc.Driver  
2. url=jdbc:mysql://localhost:3306/student  
3. user=root  
4. password=123  

mybatis-config.xml(核心配置文件用于数据库连接，事务管理等)

<?xml version="1.0" encoding="UTF-8"?>  
<!DOCTYPE configuration  
    PUBLIC "-//mybatis.org//DTD Config 3.0//EN"  
    "http://mybatis.org/dtd/mybatis-3-config.dtd">  
  
<configuration>  
    <properties resource="config.properties"><!--读取属性文件-->  
    </properties>
    <typeAliases>
          <typeAlias alias="Student" type="com.mybaits.bean.Student"/>
   </typeAliases>  
    <environments default="development">  
        <environment id="development">  
            <transactionManager type="JDBC"/>  
            <dataSource type="POOLED">  
                <property name="driver" value="${driver}"/>  
                <property name="url" value="${url}"/>  
                <property name="username" value="${user}"/>  
                <property name="password" value="${password}"/>  
            </dataSource>       
        </environment>  
    </environments>  
    <mappers>  
        <mapper resource="com/mybatis/bean/StudentMapper.xml"/>  
    </mappers>  
</configuration>  

StudentMapper.xml（映射文件）

[html]  view plain copy

1. <?xml version="1.0" encoding="UTF-8"?>  
2. <!DOCTYPE mapper   
3. PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"   
4. "http://mybatis.org/dtd/mybatis-3-mapper.dtd">  
5. <mapper namespace="com.mbatis.bean">  
6.   
7.  <select id="SelectAllStudent" resultType="Student">  
8.     Select * from student<!-- 此处的student是数据库的student表 -->  
9.  </select>  
10.    
11.  <select id="SelectOneStudent" resultType="Student" parameterType="int">  
12.     select * from student where student.id=#{id};  
13.  </select>  
14.    
15.  <insert id="AddStudent" parameterType="Student" useGeneratedKeys="true" keyProperty="id">  
16.     insert into Student(id,name,age,mail)   
17.     values(#{id},#{name},#{age},#{mail});  
18.  </insert>  
19.    
20.  <delete id="DeleteStudent" parameterType="int">  
21.     delete from student where student.id=#{id}  
22.  </delete>  
23.    
24.  <update id="UpdateStudent" parameterType="Student">  
25.     update student set student.name=#{name},student.age=#{age},student.mail=#{mail}  
26.     where student.id=#{id}  
27.  </update>  
28.    
29. </mapper>    

StudentDaoImpl.java

[java]  view plain copy

1.   

[java]  view plain copy

1. package com.Dao.Impl;  
2. import java.io.IOException;  
3. import java.io.InputStream;  
4. import java.util.List;  
5.   
6.   
7. import org.apache.ibatis.io.Resources;  
8. import org.apache.ibatis.session.SqlSession;  
9. import org.apache.ibatis.session.SqlSessionFactory;  
10. import org.apache.ibatis.session.SqlSessionFactoryBuilder;  
11.   
12.   
13. import com.Dao.*;  
14. import com.Ibatis.Student;  
15.    
16.   
17.   
18. public class StudentDaoImpl implements StudentDao {  
19.      private static SqlSessionFactory ssf ;  
20.       static{  
21.           String resource ="mybatis-config.xml";  
22.           InputStream stream;  
23.         try {  
24.             stream = Resources.getResourceAsStream(resource);  
25.              ssf= new SqlSessionFactoryBuilder().build(stream);  
26.              stream.close();  
27.         } catch (IOException e) {  
28.             e.printStackTrace();  
29.         }  
30.       }  
31.        
32.     public List<Student> GetAllStduent() {  
33.         List<Student> list = null;  
34.         SqlSession session = null;  
35.          try {  
36.              session = ssf.openSession();  
37.              list= session.selectList("com.mybatis.SelectAllStudent");  
38.         } catch (Exception e) {  
39.             e.printStackTrace();  
40.         }  
41.         finally{  
42.             session.close();  
43.         }  
44.          return list;  
45.     }  
46.   
47.   
48.     public void AddStudent(Student student) {  
49.          SqlSession session = null;  
50.          try {  
51.              session = ssf.openSession();  
52.             session.insert("com.mybatis.AddStudent",student);  
53.              session.commit();  
54.         } catch (Exception e) {  
55.             e.printStackTrace();  
56.         }  
57.         finally{  
58.             session.close();  
59.         }  
60.     }  
61.   
62.   
63.     public void DeleteStudent(int id) {  
64.          SqlSession session = null;  
65.          try {  
66.              session = ssf.openSession();  
67.              session.delete("com.mybatis.DeleteStudent", id);  
68.              session.commit();  
69.         } catch (Exception e) {  
70.             e.printStackTrace();  
71.         }  
72.         finally{  
73.             session.close();  
74.         }  
75.     }  
76.   
77.   
78.     public Student GetOneStudent(int id) {  
79.          Student student = null;   
80.          SqlSession session = null;  
81.          try {  
82.              session = ssf.openSession();  
83.              student =session.selectOne("com.mybatis.SelectOneStudent", id);  
84.         } catch (Exception e) {  
85.             e.printStackTrace();  
86.         }  
87.         finally{  
88.             session.close();  
89.         }  
90.          return student;  
91.     }  
92.   
93.   
94.     public void UpdateStudent(Student student) {  
95.         SqlSession session = null;  
96.          try {  
97.              session = ssf.openSession();  
98.              session.update("com.mybatis.UpdateStudent", student);  
99.              session.commit();  
100.         } catch (Exception e) {  
101.             e.printStackTrace();  
102.         }  
103.         finally{  
104.             session.close();  
105.         }  
106.     }  
107. }  

StudentTest.java

[java]  view plain copy

1. public static void main(String[] args) {  
2.         StudentDao dao = new StudentDaoImpl();  
3.           
4.         System.out.println("***********查询所有***************************");   
5.         List<Student> list = dao.GetAllStduent();  
6.         for(Student s:list){  
7.             System.out.println(s.toString());  
8.         }  
9.           
10.         System.out.println("************增加新的记录************************");   
11.           
12.         Student student1 = new Student();  
13.         student1.setAge(45);  
14.         student1.setName("ant");  
15.         student1.setMail("[email protected]");  
16.         dao.AddStudent(student1);   
17.           
18.         System.out.println("*************删除前查询第12条记录***************");   
19.           
20.         Student student3 = dao.GetOneStudent(12);  
21.         if(student3==null){  
22.             System.out.println("第12条记录删除了");  
23.         }else{  
24.             System.out.println(student3.toString());  
25.         }  
26.           
27.         System.out.println("**************删除第12条记录*****************");   
28.          
29.         dao.DeleteStudent(12);  
30.           
31.         System.out.println("**************删除后查询第12条记录**************");   
32.           
33.         Student student2 = dao.GetOneStudent(12);  
34.         if(student2==null){  
35.             System.out.println("第12条记录 删除了");  
36.         }else{  
37.             System.out.println(student2.toString());  
38.         }  
39.            
40.         System.out.println("**************获得更新前的记录********************");   
41.           
42.         Student student4 = dao.GetOneStudent(4);  
43.         System.out.println(student4.getName());  
44.         student4.setName("my name is changed");  
45.         dao.UpdateStudent(student4);   
46.           
47.         System.out.println("**************获得更新后的记录********************");   
48.           
49.         Student student5 = dao.GetOneStudent(4);  
50.         System.out.println(student5.getName());  
51.     }  

参考:http://blog.csdn.net/qiufengsaoluoye01/article/details/7881241

http://www.javacodegeeks.com/2012/11/mybatis-tutorial-crud-operations-and-mapping-relationships-part-1.html

http://mybatis.co.uk/index.php/2010/09/mybatis-simple-and-complete-example.html

MyBatisMyBatis存储过程、MyBatis分页、MyBatis一对多增删改查操作

:http://blog.csdn.net/qiufengsaoluoye01/article/details/7891930