Java Interview Essentials---Introduction to the use of Ibatis framework---update at any time

The basic use of 1.ibatIS, here through an example to learn
A. Dream Technology QQ Communication Group: credream:251572072
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A. New Ibatistest project
/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 ();
Test Queryallstudent () method
/*for (Student student:dao.queryAllStudent ()) {
SYSTEM.OUT.PRINTLN (student);
}*/
Test Querystudentbyid () method
/*SYSTEM.OUT.PRINTLN ("ID is 1:" +dao.querystudentbyid (1));
Test addstudent (Student Student) method
/*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);
Test Deltestudentbyid (int id) method
Dao.deltestudentbyid (3);
Test Updatestudentbyid (Student Student) method;
/*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);
Test Querystudentbyname (String name) method
/*list<student> students=dao.querystudentbyname ("x");
for (Student student:students) {
SYSTEM.OUT.PRINTLN (student);
}*/
Test: Addstudentbysequence (Student Student) method
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. Get the primary key value from the database sequence
2. Insert a record in the student table
Sqlmapclient.insert ("Insertstudentbysequence", student);
System.out.println ("sid=" +student.getsid ());
catch (SQLException e) {
E.printstacktrace ();
}
}

public void Deltestudentbyid (int id) {
try {
System.out.println ("Start deletion ...");
System.out.println (Sqlmapclient.delete ("Deltestudentbyid", id));
System.out.println ("Delete successful ...");
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 {
/**
* This place is best not to overwrite the constructor method of the parent class
*/
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. Principle Understanding:
A. Dream Technology QQ Communication Group: credream:251572072
Ibatis is not the best choice for the project.
Ibatis is a data mapping tool. Its function is to establish a mapping relationship between the database query and the object's attributes. If the project to be developed is based on a business object (including mapping or
Data Dictionary object), then Ibatis can be considered a good choice. When the application is layered design implementation, it is a good choice, so that the business layer can and the user interface
Layers apart.
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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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