ibatis入门实例（完整）

一：首先展示一下我的web文件结构，首先导入Ibatis所需jar和数据库驱动，从第二步开始跟着笔者一步步来

二：数据库建测试表

CREATE TABLE STUDENT (
ID NUMBER(5),
NAME VARCHAR2(10),
SEX VARCHAR2(10),
AGE NUMBER(10),
ADDRESS VARCHAR2(10),
CONSTRAINT PK_ID PRIMARY KEY(ID)
);

三：创建SqlMapConfig.xml文件

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE sqlMapConfig PUBLIC "-//iBATIS.com//DTD SQL Map Config 2.0//EN"  "http://www.ibatis.com/dtd/sql-map-config-2.dtd">
<sqlMapConfig>  

    <properties resource="SqlMapConfig.properties" />  

    <transactionManager type="JDBC">
        <dataSource type="SIMPLE">
            <property name="JDBC.Driver" value="${driver}" />
            <property name="JDBC.ConnectionURL" value="${url}" />
            <property name="JDBC.Username" value="${username}" />
            <property name="JDBC.Password" value="${password}" />  

        </dataSource>
    </transactionManager>  

    <sqlMap resource="sqlMap_student.xml" />  

</sqlMapConfig>  

四：创建SqlMapConfig.properties，将用户名和密码改成自己的

driver=oracle.jdbc.driver.OracleDriver
url=jdbc:oracle:thin:@localhost:1521:orcl
username=ynsb1
password=1 

五 创建sqlMap_student.xml映射文件，注意parameterClass要改成自己的pojo类

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE sqlMap PUBLIC "-//iBATIS.com//DTD SQL Map 2.0//EN" "http://www.ibatis.com/dtd/sql-map-2.dtd">  

<sqlMap namespace="Test">  

    <statement id="insert_student"
        parameterClass="com.shangcg.ibatis.StudentDto">
        insert into student(
        id,name,age,sex,address) values(
        #id#,#name#,#age#,#sex#,#address# )
    </statement>  

    <statement id="delete_all_student"
        parameterClass="com.shangcg.ibatis.StudentDto">
        delete from student
    </statement>  

    <statement id="deleteByID_student"
        parameterClass="com.shangcg.ibatis.StudentDto">
        delete from student where
        id = #id#
    </statement>  

    <statement id="updataStudent_test"
        parameterClass="com.shangcg.ibatis.StudentDto">
        update student set
        name=#name#,sex=#sex#,age=#age#,address=#address#
        where id = #id#
    </statement>    

    <statement id="select_all_student"
        resultClass="com.shangcg.ibatis.StudentDto">
        select * from student order by id
    </statement>  

    <statement id="selectByID_student"
        parameterClass="com.shangcg.ibatis.StudentDto"
        resultClass="com.shangcg.ibatis.StudentDto">
        select * from student
        where id = #id#
        order by id
    </statement>
</sqlMap>  

六：配置文件创建完成，接下来创建java类

1）创建StudentDto

import java.sql.Date;

public class StudentDto {
    // 注意这里需要保证有一个无参构造方法，因为包括Hibernate在内的映射都是使用反射的，如果没有无参构造可能会出现问题
     //学生ID
    private int id = 0;
    //学生姓名
    private String name = "";
    //学生性别
    private String sex = "";
    //学生年龄
    private int age = 0;
    //学生地址
    private String address = "";
    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 String getSex() {
        return sex;
    }
    public void setSex(String sex) {
        this.sex = sex;
    }
    public int getAge() {
        return age;
    }
    public void setAge(int age) {
        this.age = age;
    }
    public String getAddress() {
        return address;
    }
    public void setAddress(String address) {
        this.address = address;
    }  

}

2）创建接口StudentDao

import java.util.ArrayList;

import com.ibatis.sqlmap.client.SqlMapClient;
import com.shangcg.ibatis.StudentDto;

public interface StudentDao {

     //添加student表的数据
    public void addStudent(SqlMapClient sqlMap,StudentDto studentdto);
    //删除student表的数据
    public void delStudent(SqlMapClient sqlMap);
    //删除student表的指定ID数据
    public void delStudentByID(SqlMapClient sqlMap,StudentDto studentdto);
    //更新student表的数据
    public void updataStudent(SqlMapClient sqlMap,StudentDto studentdto);
    //查询student表的所有数据
    public ArrayList selectStudent(SqlMapClient sqlMap);
    //查询student表的指定ID数据
    public StudentDto selectStudentByID(SqlMapClient sqlMap,StudentDto studentdto);
}

3）创建实现类StudentImpl

import java.sql.SQLException;
import java.util.ArrayList;

import com.ibatis.sqlmap.client.SqlMapClient;
import com.shangcg.ibatis.StudentDto;
import com.shangcg.interfaces.StudentDao;

public class StudentImpl implements StudentDao {

     //添加student表的数据
    public void addStudent(SqlMapClient sqlMap, StudentDto studentdto) {  

        try {
            sqlMap.insert("insert_student", studentdto);
        } catch (SQLException e) {  

            e.printStackTrace();
        }
    }  

    //删除student表的数据
    public void delStudent(SqlMapClient sqlMap) {  

        try {
            sqlMap.delete("delete_all_student", null);
        } catch (SQLException e) {  

            e.printStackTrace();
        }
    }  

    //删除student表的指定ID数据
    public void delStudentByID(SqlMapClient sqlMap, StudentDto studentdto) {  

        try {
            sqlMap.delete("deleteByID_student",studentdto );
        } catch (SQLException e) {  

            e.printStackTrace();
        }
    }  

    //更新student表的数据
    public void updataStudent(SqlMapClient sqlMap, StudentDto studentdto) {  

        try {
            sqlMap.update("updataStudent_test",studentdto );
        } catch (SQLException e) {  

            e.printStackTrace();
        }
    }  

    //查询student表的所有数据
    public ArrayList selectStudent(SqlMapClient sqlMap) {  

        //保存查询结果
        ArrayList rsList = new ArrayList();  

        try {
            rsList = (ArrayList)sqlMap.queryForList("select_all_student","");
        } catch (SQLException e) {  

            e.printStackTrace();
        }
        return rsList;
    }  

    //查询student表的指定ID数据
    public StudentDto selectStudentByID(SqlMapClient sqlMap, StudentDto studentdto) {  

        //返回后保存在info中
        StudentDto info = new StudentDto();
        try {
            info = (StudentDto)sqlMap.queryForObject("selectByID_student", studentdto);
        } catch (SQLException e) {  

            e.printStackTrace();
        }
        return info;
    }  

}

4）创建MainTest 测试类

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

import com.ibatis.common.resources.Resources;
import com.ibatis.sqlmap.client.SqlMapClient;
import com.ibatis.sqlmap.client.SqlMapClientBuilder;
import com.shangcg.ibatis.StudentDto;
import com.shangcg.impl.StudentImpl;

public class MainTest {

     public StudentImpl impl = new StudentImpl();
        public StudentDto info = new StudentDto();
        public static SqlMapClient sqlmapclient = null;
        static {
            try {
                //读取xml文件
                Reader reader = Resources.getResourceAsReader("SqlMapConfig.xml");
                sqlmapclient = SqlMapClientBuilder.buildSqlMapClient(reader);
                reader.close();
            } catch (IOException e) {  

                e.printStackTrace();
            }
        }  

        public static void main(String []args){
            MainTest stu = new MainTest();  

            System.out.println("------------------------------- start ------------------------------");  

            //以下为各种方法测试   

            //添加student表的数据
            stu.addStudent_test();   

            //删除student表的数据
            //stu.delStudent_test();   

            //删除student表的指定ID数据
            //stu.delStudentByID_test();   

            //更新student表的数据
            //stu.updataStudent_test();   

            //查询student表的所有数据
            //stu.selectStudent_test();   

            //查询student表的所有数据
            //stu.selectStudentByID_test();   

            System.out.println("-------------------------------  end  ------------------------------");  

        }  

        //添加student表的数据
        public void addStudent_test(){  

            //把要插入的数据填入info对象中
            info.setId(5);
            info.setName("zh2208");
            info.setSex("男");
            info.setAge(24);
            info.setAddress("上海");  

            impl.addStudent(sqlmapclient, info);  //参数就是sqlMap_student.xml中配置对应的id
        }  

        //删除student表的数据
        public void delStudent_test(){
            impl.delStudent(sqlmapclient);
        }  

        //删除student表的指定ID数据
        public void delStudentByID_test(){
            //指定ID
            info.setId(1);
            impl.delStudentByID(sqlmapclient,info);  

        }  

        //更新student表的数据
        public void updataStudent_test(){  

            //把要更新的数据填入info对象中
            info.setId(6);
            info.setName("zh2208up");
            info.setSex("男");
            info.setAge(20);
            info.setAddress("上海up");
            impl.updataStudent(sqlmapclient, info);
        }  

        //查询student表的所有数据
        public void selectStudent_test(){  

            StudentDto stu_dto = new StudentDto();
            //检索结果保存到list中
            ArrayList resultList = impl.selectStudent(sqlmapclient);
            for(int i = 0; i < resultList.size();i++){
                stu_dto = (StudentDto) resultList.get(i);
                //打印对象中的信息
                show(stu_dto);
            }  

        }  

        //查询student表的指定ID数据
        public void selectStudentByID_test(){
            StudentDto stu_dto = new StudentDto();
            info.setId(1);
            stu_dto = impl.selectStudentByID(sqlmapclient,info);  

            if(stu_dto != null){
                show(stu_dto);
            }else{
                System.out.println("no data!!!!");
            }
        }  

        //打印查询结果
        public void show(StudentDto stu_dto){  

            System.out.print("学生ID :" + stu_dto.getId() + " ; ");
            System.out.print("学生姓名 :" + stu_dto.getName() + " ; ");
            System.out.print("学生性别 :" + stu_dto.getSex() + " ; ");
            System.out.print("学生年龄 :" + stu_dto.getAge() + " ; ");
            System.out.print("学生地址 :" + stu_dto.getAddress());
            System.out.println();  

        }
}