📅  最后修改于: 2020-11-16 08:15:29             🧑  作者: Mango
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;
让我们考虑一下EMPLOYEE表具有两条记录,如下所示:
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,您不需要修改Employee.java文件。让我们保持上一章的样子。
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
INSERT INTO EMPLOYEE(first_name, last_name, salary)
values (#first_name#, #last_name#, #salary#)
select last_insert_id() as id
UPDATE EMPLOYEE
SET first_name = #first_name#
WHERE id = #id#
DELETE FROM EMPLOYEE
WHERE id = #id#
{ call getEmp( #acctID# ) }
该文件具有应用程序级逻辑,可使用ResultMap从Employee表读取雇员的姓名-
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 ");
}
}
这是编译和运行上述软件的步骤。在继续进行编译和执行之前,请确保已正确设置了PATH和CLASSPATH。
您将得到以下结果-
Going to read employee name.....
First Name: Zara
Record name Successfully