java程序中的ibatis连接mySql的基本实例

属性文件:SqlMap.properties

driver=com.mysql.jdbc.Driver
url=jdbc:mysql://localhost:3306/ibatis
username=root
password=gys

SqlMapconfig.xml

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE sqlMapConfig PUBLIC "-//ibatis.apache.org//DTD SQL Map Config 2.0//EN"
"http://ibatis.apache.org/dtd/sql-map-config-2.dtd">
<sqlMapConfig>
<!-- 引用jdbc属性的配置文件 -->
    <properties resource="com/iflytek/entity/SqlMap.properties" />
    <!-- 使用jdbc的事务管理 -->
    <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>
    <!-- 这里可以写多个实体的映射文件 -->
    <sqlMap resource="com/iflytek/entity/Student.xml" />
</sqlMapConfig>

Student.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE sqlMap PUBLIC "-//ibatis.apache.org//DTD SQL Map 2.0//EN"
"http://ibatis.apache.org/dtd/sql-map-2.dtd">
<sqlMap>
    <!-- 通过typeAlias使得我们在下面使用Student实体类的时候不需要写包名 -->
    <typeAlias alias="Student" type="com.iflytek.entity.Student"/>
    <!-- id表示select里的sql语句，resultClass表示返回结果的类型,并且格式化时间 -->
    <select id="selectAllStudent" resultClass="Student">
        select Id,name,DATE_FORMAT(birth,'%Y-%m-%d %H:%i:%S') as birth,score from tb1_student
    </select>
    <select id="selectStudentById" parameterClass="int" resultClass="Student">
    select * from tb1_student where id=#id#
    </select>
    <!-- 注意这里的resultClass类型，使用Student类型取决于queryForList还是queryForObject -->
    <select id="selectStudentByName" parameterClass="String" resultClass="Student">
        select name,birth,score from tb1_student where name like '%$name$%'
    </select>
    <insert id="addStudent" parameterClass="Student">
        insert into tb1_student (name,birth,score) values (#name#,#birth#,#score#)
        <selectKey resultClass="int" keyProperty="id">
            select @@identity as inserted
        </selectKey>
    </insert>
    <delete id="deleteStudentById" parameterClass="int">
        delete from tb1_student where id=#id#
    </delete>
    <update id="updateStudent" parameterClass="Student">
        update tb1_student set name=#name#,birth=#birth#,score=#score# where id=#id#
    </update>
</sqlMap>

Student.java

package com.iflytek.entity;

import java.sql.Date;

public class Student {
    private int id;
    private String name;
    private String birth;
    private float score;
    
    public Student(){}
    
    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 getBirth() {
        return birth;
    }
    public void setBirth(String birth) {
        this.birth = birth;
    }
    public float getScore() {
        return score;
    }
    public void setScore(float score) {
        this.score = score;
    }
    @Override
    public String toString(){
        return "id="+id+"	 name"+name+"	 ajor="+birth+"	 score="+score+"
";
    }
    
}

IStudentDao.java

package com.iflytek.dao;

import java.util.List;

import com.iflytek.entity.Student;

public interface IStudentDao {
    /*
     * 添加学生信息
     */
    public boolean addStudent(Student student);
    /*
     * 根据id删除学生信息
     */
    public boolean deleteStudentById(int id);
    /*
     * 更新学生信息
     */
    public boolean updateStudent(Student student);
    /*
     * 查询全部学生信息
     */
    public List<Student> selectAllStudent();
    
    /*
     * 根据学生姓名模糊查询学生信息
     */
    public List<Student> selectStudentByName(String name);
    /*
     * 根据学生id查询学生信息
     */
    public Student selectStudentById(int id);
    
}

StudentDaoImpl.java

package com.iflytek.daoimpl;

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

import com.ibatis.common.resources.Resources;
import com.ibatis.sqlmap.client.SqlMapClient;
import com.ibatis.sqlmap.client.SqlMapClientBuilder;
import com.iflytek.dao.IStudentDao;
import com.iflytek.entity.Student;

public class StudentDaoImpl implements IStudentDao {
    private static SqlMapClient sqlMapClient = null;

    // 读取配置文件
    static {
        try {
            Reader reader = Resources.getResourceAsReader("com/iflytek/entity/SqlMapConfig.xml");
            sqlMapClient = SqlMapClientBuilder.buildSqlMapClient(reader);
            reader.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public boolean addStudent(Student student) {
        Object object = null;
        boolean flag = false;
        try {
            object = sqlMapClient.insert("addStudent", student);
            System.out.println("添加学生信息的返回值:" + object);
        } catch (SQLException e) {
            e.printStackTrace();
        }
        if (object != null) {
            flag = true;
        }
        return flag;
    }

    public boolean deleteStudentById(int id) {
        boolean flag = false;
        Object object = null;
        try {
            object = sqlMapClient.delete("deleteStudentById", id);
            System.out.println("删除学生信息的返回值:" + object + ",这里返回的是影响的函数");
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        if (object != null) {
            flag = true;
        }
        return flag;
    }

    public boolean updateStudent(Student student) {
        boolean flag = false;
        Object object = false;
        try {
            object = sqlMapClient.update("updateStudent", student);
            System.out.println("更新学生信息的返回值:" + object + ",返回影响的行数");
        } catch (SQLException e) {
            e.printStackTrace();
        }
        if(object!=null){
            flag=true;
        }
        return flag;
    }

    public List<Student> selectAllStudent() {
        List<Student> students=null;
        try {
            students=sqlMapClient.queryForList("selectAllStudent");
        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return students;
    }

    public List<Student> selectStudentByName(String name) {
        List<Student> students=null;
        try {
            students=sqlMapClient.queryForList("selectStudentByName", name);
        } catch (SQLException e) {            
            e.printStackTrace();
        }
        return students;
    }

    public Student selectStudentById(int id) {
        Student student=null;
        try {
            student=(Student)sqlMapClient.queryForObject("selectStudentById",id);
        } catch (SQLException e) {            
            e.printStackTrace();
        }
        return student;
    }

}

TestIbatis.java

package com.iflytek.test;

import java.sql.Date;
import java.util.List;

import com.iflytek.daoimpl.StudentDaoImpl;
import com.iflytek.entity.Student;

public class TestIbatis {
    public static void main(String[] args) {
        StudentDaoImpl studentDaoImpl=new StudentDaoImpl();
        
        //测试插入
        Student addStudent=new Student();
        addStudent.setName("李四");
        addStudent.setBirth(Date.valueOf("2011-09-02"));
        addStudent.setScore(88);
        System.out.println(studentDaoImpl.addStudent(addStudent));        
                
        addStudent.setName("李四2");
        addStudent.setBirth(Date.valueOf("1990-09-02"));
        addStudent.setScore(98);
        System.out.println(studentDaoImpl.addStudent(addStudent));
        //根据Id查询
        System.out.println(studentDaoImpl.selectStudentById(2));
        
        //根据姓名查询
        List<Student> list=studentDaoImpl.selectStudentByName("四");
        for(Student student:list){
            System.out.println(student);
        }
        
        //查询所有
        List<Student> list=studentDaoImpl.selectAllStudent();
        for(Student student:list){
            System.out.println(student);
        }
        
        //更新信息
        Student updateStudent=new Student();
        updateStudent.setId(1);
        updateStudent.setName("李四1+");
        updateStudent.setBirth(Date.valueOf("1990-09-07"));
        updateStudent.setScore(24);
        System.out.println(studentDaoImpl.updateStudent(updateStudent));
        
        //删除数据
        Boolean b=studentDaoImpl.deleteStudentById(1);
        System.out.println("删除结果:"+b);
        
    }    
}