java面试要点ibatiS框架的使用方法介绍随时更新

1.ibatIS的基本使用方法,这里通过一个例子来学习
a.创梦技术qq交流群：CreDream：251572072
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a.新建IbatisTest项目
/IbatisTest/src/com/credream/test/testimpl.java
package com.credream.test;

import java.sql.Date;
import com.credream.IStudentDao;
import com.credream.IStudentDaoImpl;
import com.credream.Student;
public class testimpl {
    public static void main(String[] args) {
  IStudentDao dao=new IStudentDaoImpl();
  //测试queryAllStudent()方法
        /*for (Student student:dao.queryAllStudent()) {
   System.out.println(student);
  }*/
  //测试queryStudentById()方法
  /*System.out.println("id is 1:"+dao.queryStudentById(1));*/
  //测试addStudent(Student student) 方法
  /*Student student=new Student();
  student.setSid(4);
  student.setSname("xushu");
  student.setMajor("games");
  student.setBirth(Date.valueOf("2012-12-22"));
  student.setScore((float) 18.5);
     dao.addStudent(student);*/
  //测试delteStudentById(int id)方法
  //dao.delteStudentById(3);
       //测试updateStudentById(Student student) 方法;
  /*Student student=new Student();
  student.setSid(4);
  student.setSname("xushen");
  student.setMajor("games");
  student.setBirth(Date.valueOf("2012-12-22"));
  student.setScore((float) 18.5);
     dao.updateStudentById(student);*/
    //测试queryStudentByName(String name)方法
     /*List<Student> students=dao.queryStudentByName("x");
       for(Student student:students){
     System.out.println(student);
    }*/
    //测试:addStudentBySequence(Student student) 方法
  Student student=new Student();
  student.setSid(4);
  student.setSname("xushen");
  student.setMajor("games");
  student.setBirth(Date.valueOf("2012-12-22"));
  student.setScore((float) 18.5);
  dao.addStudentBySequence(student);
  
    }
}
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2./IbatisTest/src/com/credream/util/DButil.java
package com.credream.util;
public class DButil {
 
}
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3./IbatisTest/src/com/credream/IStudentDao.java
package com.credream;

import java.util.List;

public interface IStudentDao {
public void addStudent(Student student);
public void addStudentBySequence(Student student);
public void delteStudentById(int id);
public void updateStudentById(Student student);
public List<Student> queryAllStudent();
public List<Student> queryStudentByName(String name);
public Student queryStudentById(int id);
}
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4./IbatisTest/src/com/credream/IStudentDaoImpl.java
package com.credream;

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

import com.ibatis.sqlmap.client.SqlMapClient;

public class IStudentDaoImpl implements IStudentDao {

 private static SqlMapClient sqlMapClient=null;
    static{
     Reader reader;
  try {
   reader = com.ibatis.common.resources.Resources.getResourceAsReader("com/credream/SqlMapConfig.xml");
   sqlMapClient=com.ibatis.sqlmap.client.SqlMapClientBuilder.buildSqlMapClient(reader);
      reader.close();
  } catch (IOException e) {
   e.printStackTrace();
  }
    } 

 public void addStudent(Student student) {
 try {
  sqlMapClient.insert("insertStudent", student);
 } catch (SQLException e) {
 
  e.printStackTrace();
 }

 }

 public void addStudentBySequence(Student student) {
try {
 //1.从数据库序列中获取主键值
 //2.让student表中插入记录
 sqlMapClient.insert("insertStudentBySequence", student);
    System.out.println("sid="+student.getSid());
} catch (SQLException e) {
 e.printStackTrace();
}
 }

 public void delteStudentById(int id) {
    try {
     System.out.println("开始删除....");
  System.out.println(sqlMapClient.delete("delteStudentById", id));
  System.out.println("删除成功...");
 } catch (SQLException e) {
  
  e.printStackTrace();
 }  

 }

 public List<Student> queryAllStudent() {
  List<Student> studentList=null;
  try {
   studentList=sqlMapClient.queryForList("selectAllStudent");
  } catch (SQLException e) {
   e.printStackTrace();
  }
  return studentList;
 }

 public Student queryStudentById(int id) {
  Student student=null;
  try {
   student=(Student) sqlMapClient.queryForObject("selectStudentById",id);
  } catch (SQLException e) {
   e.printStackTrace();
  }
  return student;
 }
 public List<Student> queryStudentByName(String name) {
  List<Student> students=null;
  try {
   students=sqlMapClient.queryForList("queryStudentByName",name);
  } catch (SQLException e) {
  
   e.printStackTrace();
  }
  return students;
 }
 public void updateStudentById(Student student) {
  try {
   System.out.println(sqlMapClient.update("updateStudentById", student));
  } catch (SQLException e) {
   e.printStackTrace();
  }
 }
}
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5./IbatisTest/src/com/credream/Student.java
package com.credream;

import java.util.Date;

public class Student {
 /**
  * 这个地方最好不要覆盖父类的构造方法
  */
private int sid=0;
private String sname=null;
private String major=null;
private Date birth=null;
private float score=0;
public int getSid() {
 return sid;
}
public void setSid(int sid) {
 this.sid = sid;
}
public String getSname() {
 return sname;
}
public void setSname(String sname) {
 this.sname = sname;
}
public String getMajor() {
 return major;
}
public void setMajor(String major) {
 this.major = major;
}
public Date getBirth() {
 return birth;
}
public void setBirth(Date birth) {
 this.birth = birth;
}
 
public float getScore() {
 return score;
}
public void setScore(float score) {
 this.score = score;
}
@Override
public String toString() {
 String content="sid="+sid+"/sname"+sname+"tmajor:"+major+"birth:"+
 birth;
 return content;
}

}
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6./IbatisTest/src/com/credream/SqlMap.propertiesdriver=com.mysql.jdbc.Driver
url=jdbc\:mysql\://localhost\:3306/test
username=root
password=1234
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7./IbatisTest/src/com/credream/SqlMapConfig.xml
<?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">
<!--<!DOCTYPE sqlMap PUBLIC "-//ibatis.apache.org//DTD SQL Map 2.0//EN" 
   "http://ibatis.apache.org/dtd/sql-map-2.dtd">
  -->
   <sqlMapConfig>
  <properties resource="com/credream/SqlMap.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="com/credream/Student.xml"/>
  </sqlMapConfig>
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 8./IbatisTest/src/com/credream/Student.xml
 <?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>
  <typeAlias alias="Student" type="com.credream.Student"/>
  <select id="selectAllStudent" resultClass="Student">
  select * from student;
  </select>
 <select id="selectStudentById" parameterClass="int" resultClass="Student">
 select * from student where sid=#sid#
 </select>
 <insert id="insertStudent" parameterClass="Student">
 insert into Student (sid,sname,major,birth,score)values (#sid#,#sname#,#major#,#birth#,#score#)
 </insert>
 
 <delete id="delteStudentById" parameterClass="int">
delete from student where sid=#sid#
 </delete>
 
 <update id="updateStudentById" parameterClass="student">
 update Student set sname=#sname#,major=#major#,score=#score#,birth=#birth#
 where sid=#sid#
 </update>
 
 
 <select id="queryStudentByName" parameterClass="string" resultClass="Student">
 select sid,sname,major,birth,score from student where sname like '%$sname$%'
 
 </select>
 
 
 <insert id="insertStudentBySequence" parameterClass="Student">
 <selectKey resultClass="int" keyProperty="sid">
 select studentPKSequence.netVal from dual
 </selectKey>
 insert into student(sid,sname,birth,major,score)values(#sid#,#sname#,
 #birth#,#major#,#score#)
 </insert>
 
  </sqlMap>
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  9.G:\javalib\mysqldriver\mysql-connector-java-5.1.16-bin.jar
  G:\javalib\ibatis\ibatis-2.3.0.677.jar
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  2.原理理解:
  a.创梦技术qq交流群：CreDream：251572072
   iBATIS对于工程是不是最好的选择
   iBATIS是一种数据映射工具。它的作用就在把数据库查询与对象的属性间建立映射关系。如果将要开发的工程是基于业务对象（包括映射或
数据字典对象），那么iBATIS可以算是个好的选择。当应用程序进行分层设计实现时，它更是个好的选择，这样的话，业务层就可以和用户界面
层分开。
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3.private static SqlMapClient sqlMapClient=null;
    static{
     Reader reader;
  try {
   reader = com.ibatis.common.resources.Resources.getResourceAsReader("com/credream/SqlMapConfig.xml");
   sqlMapClient=com.ibatis.sqlmap.client.SqlMapClientBuilder.buildSqlMapClient(reader);
      reader.close();
  } catch (IOException e) {
   e.printStackTrace();
  }
    } 
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4.public void addStudent(Student student) {
 try {
  sqlMapClient.insert("insertStudent", student);
 } catch (SQLException e) {
 
  e.printStackTrace();
 }

 }
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public List<Student> queryAllStudent() {
  List<Student> studentList=null;
  try {
   studentList=sqlMapClient.queryForList("selectAllStudent");
  } catch (SQLException e) {
   e.printStackTrace();
  }
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