本文所用的例子是基于ibatis自带的demo（Account），数据库是oracle10g，该例子不只有ibatis调用存储过程并取得cursor的值，还有模糊查询，返回普通的string类型，批量查询等。
首先创建一个表：
create table account（
acc_id number(4) primary key,
acc_first_name varchar2(20),
acc_last_name varchar2(20),
acc_email varchar2(50)
）account表对应的实体类：
package com.mydomain.domain;
public class Account {
private int id;
private String firstName;
private String lastName;
private String emailAddress;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getFirstName() {
return firstName;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
public String getLastName() {
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
public String getEmailAddress() {
return emailAddress;
}
public void setEmailAddress(String emailAddress) {
this.emailAddress = emailAddress;
}
}sqlMapConfig.xml代码如下：
Account.xml 如下：
<?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 namespace="Account">
<!-- Use type aliases to avoid typing the full classname every time. -->
<typeAlias alias="Account" type="com.mydomain.domain.Account"/>
<!-- Result maps describe the mapping between the columns returned
from a query, and the class properties. A result map isn't
necessary if the columns (or aliases) match to the properties
exactly. -->
<resultMap id="AccountResult" class="Account">
<result property="id" column="ACC_ID"/>
<result property="firstName" column="ACC_FIRST_NAME"/>
<result property="lastName" column="ACC_LAST_NAME"/>
<result property="emailAddress" column="ACC_EMAIL"/>
</resultMap>
<!-- Select with no parameters using the result map for Account class. -->
<select id="selectAllAccounts" resultMap="AccountResult">
select * from ACCOUNT
</select>
<!-- A simpler select example without the result map. Note the
aliases to match the properties of the target result class. -->
<select id="selectAccountById" parameterClass="int" resultClass="Account">
select
ACC_ID as id,
ACC_FIRST_NAME as firstName,
ACC_LAST_NAME as lastName,
ACC_EMAIL as emailAddress
from ACCOUNT
where ACC_ID = #id#
</select>
<!-- Insert example, using the Account parameter class -->
<insert id="insertAccount" parameterClass="Account">
insert into ACCOUNT (
ACC_ID,
ACC_FIRST_NAME,
ACC_LAST_NAME,
ACC_EMAIL
values (
#id#, #firstName#, #lastName#, #emailAddress#
)
</insert>
<!-- Update example, using the Account parameter class -->
<update id="updateAccount" parameterClass="Account">
update ACCOUNT set
ACC_FIRST_NAME = #firstName#,
ACC_LAST_NAME = #lastName#,
ACC_EMAIL = #emailAddress#
where
ACC_ID = #id#
</update>
<!-- Delete example, using an integer as the parameter class -->
<delete id="deleteAccountById" parameterClass="int">
delete from ACCOUNT where ACC_ID = #id#
</delete>
<!-- 调用存储过程，获得name -->
<parameterMap id="swapParam" class="java.util.HashMap">
<parameter property="name" javaType="java.lang.String" jdbcType="VARCHAR" mode="OUT"/>
<parameter property="id" javaType="java.lang.Integer" jdbcType="INT" mode="IN"/>
</parameterMap>
<procedure id="selectNamePro" parameterMap="swapParam">
{call get_account_name(?,?)}
</procedure>
<!-- 调用存储过程，获得cursor -->
<parameterMap id="swapParamCursor" class="java.util.HashMap">
<parameter property="cursor" javaType="java.sql.ResultSet" jdbcType="ORACLECURSOR" mode="OUT"/>
<parameter property="id" javaType="java.lang.Integer" jdbcType="INT" mode="IN"/>
</parameterMap>
<procedure id="selectCursorPro" parameterMap="swapParamCursor" resultClass="java.util.HashMap">
{call get_account_cursor(?,?)}
</procedure>
<!-- 调用存储过程，获得cursor，返回account对象 -->
<resultMap id="myaccount" class="com.mydomain.domain.Account">
<result property="id" column="ACC_ID" jdbcType="Int"/>
<result property="firstName" column="ACC_FIRST_NAME" jdbcType="VARCHAR"/>
<result property="lastName" column="ACC_LAST_NAME" jdbcType="VARCHAR"/>
<result property="emailAddress" column="ACC_EMAIL" jdbcType="VARCHAR"/>
</resultMap>
<procedure id="selectCursorProAccount" parameterMap="swapParamCursor" resultMap="myaccount">
{call get_account_cursor(?,?)}
</procedure>
<!-- 通过name实现模糊查询 -->
<select id="selectAccountsByName" parameterClass="String" resultClass="Account">
select acc_id as id,
acc_first_name as firstName,
acc_last_name as lastName,
acc_email as emailAddress
from account
where acc_last_name like '$name$%'
</select>
<!-- 批量查询 -->
<select id="selectAccountsByIds" parameterClass="String" resultClass="Account">
select acc_id as id,
acc_first_name as firstName,
acc_last_name as lastName,
acc_email as emailAddress
from account
where acc_id in ($ids$)
</select>
</sqlMap>具体的调用的代码实现类-SimpleExample.java代码如下：
package com.mydomain.data;
import java.io.IOException;
import java.io.Reader;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import com.ibatis.common.resources.Resources;
import com.ibatis.sqlmap.client.SqlMapClient;
import com.ibatis.sqlmap.client.SqlMapClientBuilder;
import com.mydomain.domain.Account;
/**
* This is not a best practices class. It's just an example
* to give you an idea of how iBATIS works. For a more complete
* example, see JPetStore 5.0 at http://www.ibatis.com.
*/
@SuppressWarnings("unchecked")
public class SimpleExample {
/**
* SqlMapClient instances are thread safe, so you only need one.
* In this case, we'll use a static singleton. So sue me. ;-)
*/
private static SqlMapClient sqlMapper;
/**
* It's not a good idea to put code that can fail in a class initializer,
* but for sake of argument, here's how you configure an SQL Map.
*/
static {
try {
Reader reader = Resources.getResourceAsReader("com/mydomain/data/SqlMapConfig.xml");
sqlMapper = SqlMapClientBuilder.buildSqlMapClient(reader);
reader.close();
} catch (IOException e) {
// Fail fast.
throw new RuntimeException("Something bad happened while building the SqlMapClient instance." + e, e);
}
}
public static List selectAllAccounts () throws SQLException {
return sqlMapper.queryForList("selectAllAccounts");
}
public static Account selectAccountById (int id) throws SQLException {
return (Account) sqlMapper.queryForObject("selectAccountById", id);
}
public static void insertAccount (Account account) throws SQLException {
sqlMapper.insert("insertAccount", account);
}
public static void updateAccount (Account account) throws SQLException {
sqlMapper.update("updateAccount", account);
}
public static void deleteAccount (int id) throws SQLException {
sqlMapper.delete("deleteAccount", id);
}
//通过id，获得名字
public static void selectNamePro(int id) throws SQLException{
Map map = new HashMap();
map.put("id", id);
// map.put("name", "");
sqlMapper.queryForObject("selectNamePro",map);
System.out.println("调用存储过程的结果："+map.get("name"));
}
//通过id，获得列表-map
public static void selectCursorPro(int id) throws SQLException{
Map map = new HashMap();
map.put("id", id);
// map.put("cursor", null);
List<Map> list = sqlMapper.queryForList("selectCursorPro",map);
for (Iterator iterator = list.iterator(); iterator.hasNext();) {
Map temp = (Map) iterator.next();
System.out.println(temp.get("ACC_ID")+" "+temp.get("ACC_FIRST_NAME")+temp.get("ACC_LAST_NAME"));
}
System.out.println();
/*ResultSet rs = (ResultSet)map.get("cursor");
while(rs.next()){
System.out.println(rs.getInt(1)+" "+rs.getString(2)+" "+rs.getFloat(3));
}*/
}
@SuppressWarnings("unchecked")
public static void selectCursorProAccount(int id) throws SQLException{
Map map = new HashMap();
map.put("id", id);
// map.put("cursor", null);
List<Account> list = sqlMapper.queryForList("selectCursorProAccount",map);
for(Iterator iterator = list.iterator();iterator.hasNext();){
Account temp = (Account)iterator.next();
System.out.println(temp.getId()+":"+temp.getFirstName()+temp.getLastName());
}
System.out.println();
}
//lastName模糊查询
public static List<Account> selectAccountsByName (String name) throws SQLException {
List<Account> list = sqlMapper.queryForList("selectAccountsByName",name);
return list;
}
public static List<Account> selectAccountsByIds(String ids) throws SQLException{
return sqlMapper.queryForList("selectAccountsByIds",ids);
}
}
程序的入口所在的类：ibatisProTest.JAVA 代码如下：
package com.jac.ibatis;
import java.sql.SQLException;
import java.util.Iterator;
import java.util.List;
import com.mydomain.data.SimpleExample;
import com.mydomain.domain.Account;
@SuppressWarnings("unchecked")
public class ibatisProTest {
/**
* @param args
* @throws SQLException
*/
public static void main(String[] args) throws SQLException {
// TODO Auto-generated method stub
/*List list = SimpleExample.selectAllAccounts();
for (Iterator iterator = list.iterator(); iterator.hasNext();) {
Account object = (Account) iterator.next();
System.out.println(object.getId()+":"+object.getFirstName()+object.getLastName());
}*/
// SimpleExample.selectNamePro(2);
// SimpleExample.selectCursorPro(1);
// SimpleExample.selectCursorProAccount(1);
List<Account> list = SimpleExample.selectAccountsByName("江");
for (Iterator iterator = list.iterator(); iterator.hasNext();) {
Account account = (Account) iterator.next();
System.out.println("aaaa："+account.getLastName()+"");
//批量查询
List<Account> list = SimpleExample.selectAccountsByIds("1,2");
for (Iterator iterator = list.iterator(); iterator.hasNext();) {
Account account = (Account) iterator.next();
System.out.println("aaaa："+account.getFirstName()+account.getLastName()+"");
}
}
}总结：其实ibatis是属于比较简单的sqlmap技术，只要稍加练习就很容易掌握了。
版权声明：本文为jiandanfeng2原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接和本声明。