原创作者: 饕尽天下
阅读:14216次
评论:4条
更新时间:2011-05-26
正如你在本教程上面部分看到的,通过iBatis我们可以在数据库表中执行内嵌的insert , delete, update SQL命令.本例中你将看到如何在iBatis中调用存储过程.
就像我在上一个例子中提到的,我们使用MySQL数据库,并且使用和上一个例子中一样的Contact表.
我们在数据库"vin"中创建了一个叫showData()的存储过程,它将显示Contract表中的所有的contact信息.为了创建存储过程,我们打开MySQL并创建如下定义的过程 :
DELIMITER $$
DROP PROCEDURE IF EXISTS `vin`.`showData`$$
CREATE PROCEDURE `vin`.`showData`()
BEGIN
select * from Contact;
END$$
DELIMITER ;
"Contact.java"和"SqlMapConfig.xml"与上一个例子中的是一样的 :
Contact.java
public class Contact {
private String firstName;
private String lastName;
private String email;
private int id;
public Contact() {}
public Contact(
String firstName,
String lastName,
String email) {
this.firstName = firstName;
this.lastName = lastName;
this.email = email;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public String getFirstName() {
return firstName;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getLastName() {
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
}
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>
<settings useStatementNamespaces="true"/>
<transactionManager type="JDBC">
<dataSource type="SIMPLE">
<property name="JDBC.Driver" value="com.mysql.jdbc.Driver"/>
<property name="JDBC.ConnectionURL"
value="jdbc:mysql://192.168.10.112:3306/vin"/>
<property name="JDBC.Username" value="root"/>
<property name="JDBC.Password" value="root"/>
</dataSource>
</transactionManager>
<sqlMap resource="Contact.xml"/>
</sqlMapConfig>
我们只需修改"Contact.xml"并使用<procedure>标签来调用存储过程
<procedure id="storedInfo" resultClass="Contact">
{ call showData() }
</procedure>
上面几行代码调用了存储过程并集合了contract表.下面是Contact.xml的代码 :
<?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="Contact">
<!--- Calling stored procedure -->
<procedure id="storedInfo" resultClass="Contact">
{ call showData()}
</procedure>
</sqlMap>
现在我们可以这样调用存储过程 :
sqlMap.queryForList("Contact.storedInfo",null); "sqlMap"是SqlMapClient类的一个对象. IbatisStoredProcedure.java的代码如下 :
import com.ibatis.common.resources.Resources;
import com.ibatis.sqlmap.client.SqlMapClient;
import com.ibatis.sqlmap.client.SqlMapClientBuilder;
import java.io.*;
import java.sql.SQLException;
import java.util.*;
public class IbatisStoredProcedure{
public static void main(String[] args)
throws IOException,SQLException{
Reader reader =
Resources.getResourceAsReader("SqlMapConfig.xml");
SqlMapClient sqlMap =
SqlMapClientBuilder.buildSqlMapClient(reader);
System.out.println("All Contacts");
List<Contact> contacts = (List<Contact>)
sqlMap.queryForList("Contact.storedInfo",null);
Contact contact = null;
for (Contact c : contacts) {
System.out.print(" " + c.getId());
System.out.print(" " + c.getFirstName());
System.out.print(" " + c.getLastName());
System.out.print(" " + c.getEmail());
contact = c;
System.out.println("");
}
}
}
请依照如下步骤执行本例 :
创建Contact.xml和SqlMapConfig.xml
创建Contact.java并将其编译
创建IbatisStoredProcedure.java并将其编译
执行IbatisStoredProcedure类文件,所有的Contract信息将在你的命令提示符下显示 :
4 楼 xbyang18 2011-07-15 11:02
3 楼 sky54laozhu 2011-04-15 11:39
2 楼 pouyang 2011-02-12 17:42
1 楼 jiayouzhangpeng 2010-09-26 14:32