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Spring JDBC刪除資料

以下示例將展示如何使用Spring jdbc執行刪除資料庫表中的記錄,這裡演示如何刪除指定student表中的記錄。

語法:

String deleteQuery = "delete from Student where id = ?";
jdbcTemplateObject.update(deleteQuery, id);

在上面語法中 -

  • deleteQuery - 具有佔位符的刪除查詢語句用來刪除指定的學生資訊。
  • jdbcTemplateObject - StudentJDBCTemplate 物件將 Student 物件從資料庫中刪除。

刪除資料方法

public void delete(Integer id) {
		String sql = "delete from Student where id = ?";
		jdbcTemplateObject.update(sql,id);
		System.out.println("Deleted Record with ID = " + id);
		return;
	}

執行程式:

public class MainApp {

	public static void main(String[] args) {

		ApplicationContext context = new ClassPathXmlApplicationContext("application-beans.xml");

		StudentJDBCTemplate studentJDBCTemplate = (StudentJDBCTemplate) context.getBean("studentJDBCTemplate");

		System.out.println("----Delete Record with ID = 22 -----");
		studentJDBCTemplate.delete(22);

		System.out.println("------Listing Multiple Records--------");
		List<Student> students = studentJDBCTemplate.listStudents();
		for (Student record : students) {
			System.out.print("ID : " + record.getId());
			System.out.print(", Name : " + record.getName());
			System.out.println(", Age : " + record.getAge());
		}
	}
}

執行結果:

三月 07, 2018 8:52:58 下午 org.springframework.context.support.ClassPathXmlApplicationContext prepareRefresh
資訊: Refreshing org[email protected]254989ff: startup date [Wed Mar 07 20:52:58 CST 2018]; root of context hierarchy
三月 07, 2018 8:52:58 下午 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
資訊: Loading XML bean definitions from class path resource [application-beans.xml]
三月 07, 2018 8:52:59 下午 org.springframework.jdbc.datasource.DriverManagerDataSource setDriverClassName
資訊: Loaded JDBC driver: com.mysql.jdbc.Driver
----Delete Record with ID = 22 -----
Wed Mar 07 20:52:59 CST 2018 WARN: Establishing SSL connection without server's identity verification is not recommended. According to MySQL 5.5.45+, 5.6.26+ and 5.7.6+ requirements SSL connection must be established by default if explicit option isn't set. For compliance with existing applications not using SSL the verifyServerCertificate property is set to 'false'. You need either to explicitly disable SSL by setting useSSL=false, or set useSSL=true and provide truststore for server certificate verification.
Deleted Record with ID = 22
------Listing Multiple Records--------
Wed Mar 07 20:52:59 CST 2018 WARN: Establishing SSL connection without server's identity verification is not recommended. According to MySQL 5.5.45+, 5.6.26+ and 5.7.6+ requirements SSL connection must be established by default if explicit option isn't set. For compliance with existing applications not using SSL the verifyServerCertificate property is set to 'false'. You need either to explicitly disable SSL by setting useSSL=false, or set useSSL=true and provide truststore for server certificate verification.
ID : 23, Name : Ray, Age : 18
ID : 24, Name : Mark, Age : 20