可能有些人 都用上了Mybatis, 但是有的公司 可能还在用ibatis.
Ibatis-Home(官网) 想了解更多的 就看看.
myeclipse 插件地址
http://ibatis.apache.org/tools/abator
Ibatis的优点(与JDBC相比)
1.减少了约61%代码量
2.配置 使用简单
3.架构性能增强
4.SQL 语句和程序代码分离
5.简化项目中的分工
6.增强移植性
下面开始 简单应用 (CRUD)
1.使用的jar
ibatis-2.3.4.726.jar (ibatis就用这个jar就可以了)
ojdbc6.jar (oracle 的驱动)
SqlMapConfig.properties
driver=oracle.jdbc.driver.OracleDriver
url=jdbc:oracle:thin:@127.0.0.1:1521:orcl
username=test
password=test
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>
<!-- Configure a built-in transaction manager. If you're using an
app server, you probably want to use its transaction manager
and a managed datasource -->
<properties resource="SqlMapConfig.properties"/>
<transactionManager type="JDBC" commitRequired="false">
<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>
<!-- List the SQL Map XML files. They can be loaded from the
classpath, as they are here (com.domain.data...) -->
<sqlMap resource="com/ibatis/student/Student.xml"/>
<!-- List more here...
<sqlMap resource="com/mydomain/data/Order.xml"/>
<sqlMap resource="com/mydomain/data/Documents.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>
<typeAlias alias="Student" type="com.ibatis.student.Student"/>
<select id="queryAllStudent" resultClass="Student">
select * from student
</select>
<select id="queryStudentById" parameterClass="int" resultClass="Student">
select * from student where sid=#sid#
</select>
<!-- 这个里面的 占位符 就不能乱写了 因为会调用 Student 的 getSid ...getSname() .. -->
<insert id="addStudent" parameterClass="Student">
insert into student(sid,sname,major,birth,score)
values (#sid#,#sname#,#major#,#birth#,#score#)
</insert>
<!-- #sid# 这个 只是一个占位符 可以更改的 -->
<delete id="deleteStudentById" parameterClass="int">
delete from student where sid=#sid#
</delete>
<update id="updateStudent" parameterClass="Student">
update student
set
sname=#sname#,
major=#major#,
birth=#birth#,
score=#score#
where sid=#sid#
</update>
<!-- 如果参数 要拼接成一个表达式 就要将# 换成 $ -->
<select id="queryStudentByName" parameterClass="String" resultClass="Student">
select sid,sname,major,birth,score from student where sname like '$sname$'
</select>
<!-- Student 不区分大小写的 -->
<insert id="insertStudentBySequence" parameterClass="Student">
<selectKey resultClass="int" keyProperty="sid">
select STUDENT_SEQ.nextVal from dual
</selectKey>
insert into student(sid,sname,major,birth,score)
values (#sid#,#sname#,#major#,#birth#,#score#)
</insert>
</sqlMap>
IStudentDAO.java
package com.ibatis.student;
import java.util.List;
public interface IStudentDAO {
public void addStudent(Student student);
//使用自动增长 主键
public void addStudentBySequence(Student student);
public void delStudentById(int id);
public void updStudentById(Student student);
public List<Student> queryAllStudent();
//使用模糊查询
public List<Student> queryStudentByName(String name);
public Student queryStudentById(int id);
}
IStudentDAOImpl.java
package com.ibatis.student;
import java.io.IOException;
import java.io.Reader;
import java.sql.Date;
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{
try {
Reader reader=com.ibatis.common.resources.Resources.getResourceAsReader("SqlMapConfig.xml");
sqlMapClient=com.ibatis.sqlmap.client.SqlMapClientBuilder.buildSqlMapClient(reader);
reader.close();
}catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public void addStudent(Student student) {
// TODO Auto-generated method stub
try {
sqlMapClient.insert("addStudent", student);
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public void addStudentBySequence(Student student) {
// TODO Auto-generated method stub
try {
//1.从数据库徐磊中获取主键值
//2.往 student表中插入记录
sqlMapClient.insert("insertStudentBySequence", student);
System.err.println(student.getSid());
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public void delStudentById(int id) {
// TODO Auto-generated method stub
try {
System.out.println(sqlMapClient.delete("deleteStudentById", id));
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public List<Student> queryAllStudent() {
// TODO Auto-generated method stub
List<Student> studentList=null;
try {
studentList=sqlMapClient.queryForList("queryAllStudent");
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return studentList;
}
public Student queryStudentById(int id) {
Student student=null;
try {
student=(Student)sqlMapClient.queryForObject("queryStudentById",id);
} catch (Exception e) {
e.printStackTrace();
}
return student;
}
public List<Student> queryStudentByName(String name) {
// TODO Auto-generated method stub
List<Student> studentList=null;
try {
studentList=sqlMapClient.queryForList("queryStudentByName", name);
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return studentList;
}
public void updStudentById(Student student) {
// TODO Auto-generated method stub
try {
System.out.println(sqlMapClient.update("updateStudent", student));
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public static void main(String [] args){
IStudentDAO dao=new IStudentDAOImpl();
//1.
// for (Student student : dao.queryAllStudent()) {
// System.out.println(student);
// }
//2.
// System.out.println(dao.queryStudentById(1));
//3.
// Student student=new Student();
// student.setSid(5);
// student.setSname("admin");
// student.setScore(100);
// student.setMajor("Games");
// student.setBirth(Date.valueOf("2008-08-08"));
//
// dao.addStudent(student);
//4.
// dao.delStudentById(1);
//5.
// Student student=new Student();
// student.setSid(2);
// student.setSname("luob");
// student.setScore(50);
// student.setMajor("Games");
// student.setBirth(Date.valueOf("2008-08-08"));
// dao.updStudentById(student);
//6.
// for (Student student : dao.queryStudentByName("l%")) {
// System.out.println(student);
// }
//7.
Student student=new Student();
student.setSid(2);
student.setSname("SMITH");
student.setScore(50);
student.setMajor("Games");
student.setBirth(Date.valueOf("2008-08-08"));
dao.addStudentBySequence(student);
}
}
ibatis in语句参数传入方法
Posted on 2012-02-03 10:11 yuhaibo736 阅读(2925) 评论(1) 编辑 收藏
第一种:传入参数仅有数组
<select id="GetEmailList_Test" resultClass="EmailInfo_">
select *
from MailInfo with (nolock)
where ID in
<iterate open="(" close=")" conjunction="," >
#[]#
</iterate>
</select>
调用
string[] strValue = new string[] { "1", "2", "3" };
Reader.QueryForList<EmailInfoModel>("WebApp_Ibatisnet.dao.GetEmailList_Test", strValue );
第二种:传入参数有数组,且有其他数据
<select id="GetEmailList_Test3" parameterClass="TestIn" resultClass="EmailInfo_">
select top(#Count#)*
from MailInfo with (nolock)
where ID in
<iterate open="(" close=")" conjunction="," property="ArrValue" >
#ArrValue[]#
</iterate>
</select>
调用
TestIn ti = new TestIn();
ti.Count = 1;
ti.ArrValue = strValue;
return Reader.QueryForList<EmailInfoModel>("WebApp_Ibatisnet.dao.GetEmailList_Test3", ti);
实体类:
public class TestIn
{
private int count;
public int Count
{
get { return count; }
set { count = value; }
}
private string[] arrValue;
public string[] ArrValue
{
get { return arrValue; }
set { arrValue = value; }
}
}
第三种:in后面的数据确定,使用string传入
<select id="GetEmailList_Test2" parameterClass="TestIn" resultClass="EmailInfo_">
select *
from MailInfo with (nolock)
where ID in
($StrValue$)
</select>
调用
Reader.QueryForList<EmailInfoModel>("WebApp_Ibatisnet.dao.GetEmailList_Test2", "1,2,3");
<!--
其他信息:
Iterate的属性:
prepend -可被覆盖的SQL语句组成部分,添加在语句的前面(可选)
property -类型为java.util.List的用于遍历的元素(必选)
open -整个遍历内容体开始的字符串,用于定义括号(可选)
close -整个遍历内容体结束的字符串,用于定义括号(可选)
conjunction -每次遍历内容之间的字符串,用于定义AND或OR(可选)
<iterate>遍历类型为java.util.List的元素。-->
<!--like-->
<select id="selectAccount" resultMap="AccountResult" parameterClass="Account">
select * from ACCOUNT
<dynamic prepend="where">
<isNotNull property="id" prepend="and" open="(" close=")">
id = #id#
</isNotNull>
<isNotEmpty property="name" prepend="and">
name like '%$name$%'
</isNotEmpty>
</dynamic>
</select>