您可以使用iBATIS配置调用存储过程.首先，让我们了解如何在MySQL中创建存储过程.
我们在MySQL中有以下EMPLOYEE表 :
CREATE TABLE EMPLOYEE ( id INT NOT NULL auto_increment, first_name VARCHAR(20) default NULL, last_name VARCHAR(20) default NULL, salary INT default NULL, PRIMARY KEY (id) );
让我们在MySQL数据库中创建以下存储过程 :
DELIMITER $$ DROP PROCEDURE IF EXISTS `testdb`.`getEmp` $$ CREATE PROCEDURE `testdb`.`getEmp` (IN empid INT) BEGIN SELECT * FROM EMPLOYEE WHERE ID = empid; END $$ DELIMITER;
让我们考虑EMPLOYEE表有两个记录，如下 :
mysql> select * from EMPLOYEE; +----+------------+-----------+--------+ | id | first_name | last_name | salary | +----+------------+-----------+--------+ | 1 | Zara | Ali | 5000 | | 2 | Roma | Ali | 3000 | +----+------------+-----------+--------+ 2 row in set (0.00 sec)
要使用存储过程，您无需修改Employee.java文件.让我们保持原样在最后一章.
public class Employee {
private int id;
private String first_name;
private String last_name;
private int salary;
/* Define constructors for the Employee class. */
public Employee() {}
public Employee(String fname, String lname, int salary) {
this.first_name = fname;
this.last_name = lname;
this.salary = salary;
}
/* Here are the required method definitions */
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getFirstName() {
return first_name;
}
public void setFirstName(String fname) {
this.first_name = fname;
}
public String getLastName() {
return last_name;
}
public void setlastName(String lname) {
this.last_name = lname;
}
public int getSalary() {
return salary;
}
public void setSalary(int salary) {
this.salary = salary;
}
} /* End of Employee */在这里，我们将修改Employee.xml以引入< procedure></procedure>和< parameterMap></parameterMap>标签.这里< procedure></procedure> tag将有一个id，我们将在我们的应用程序中使用它来调用存储过程.
<?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="Employee">
<!-- Perform Insert Operation -->
<insert id="insert" parameterClass="Employee">
INSERT INTO EMPLOYEE(first_name, last_name, salary)
values (#first_name#, #last_name#, #salary#)
<selectKey resultClass="int" keyProperty="id">
select last_insert_id() as id
</selectKey>
</insert>
<!-- Perform Read Operation -->
<select id="getAll" resultClass="Employee">
SELECT * FROM EMPLOYEE
</select>
<!-- Perform Update Operation -->
<update id="update" parameterClass="Employee">
UPDATE EMPLOYEE
SET first_name = #first_name#
WHERE id = #id#
</update>
<!-- Perform Delete Operation -->
<delete id="delete" parameterClass="int">
DELETE FROM EMPLOYEE
WHERE id = #id#
</delete>
<!-- To call stored procedure. -->
<procedure id="getEmpInfo" resultClass="Employee" parameterMap="getEmpInfoCall">
{ call getEmp( #acctID# ) }
</procedure>
<parameterMap id="getEmpInfoCall" class="map">
<parameter property="acctID" jdbcType="INT" javaType="java.lang.Integer" mode="IN"/>
</parameterMap>
</sqlMap>此文件具有应用程序级逻辑，用于从Employee表中读取员工的姓名使用ResultMap :
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 IbatisSP{
public static void main(String[] args) throws IOException,SQLException{
Reader rd = Resources.getResourceAsReader("SqlMapConfig.xml");
SqlMapClient smc = SqlMapClientBuilder.buildSqlMapClient(rd);
int id = 1;
System.out.println("Going to read employee name.....");
Employee e = (Employee) smc.queryForObject ("Employee.getEmpInfo", id);
System.out.println("First Name: " + e.getFirstName());
System.out.println("Record name Successfully ");
}
}以下是编译和运行的步骤上述软件.在继续进行编译和执行之前，请确保已正确设置PATH和CLASSPATH.
如上所示创建Employee.xml.
如上所示创建Employee.java并进行编译.
如上所示创建IbatisSP.java并进行编译.
执行IbatisSP二进制文件以运行程序.
您将得到以下结果 :
Going to read record..... ID: 1 First Name: Zara Last Name: Ali Salary: 5000 Record read Successfully
