spring中操作mysql数据库

就是在spring中，对mysql数据库进行增删改查的例子，非常简单。

文件结构



maven的pom.xml文件，里面用到的几个非常重要的jar包都有

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion>
<groupId>MySpring</groupId>
<artifactId>MySpring</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>MySpring</name>
<description>MySpring</description>

<dependencies>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>4.1.0.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>4.1.0.RELEASE</version>
</dependency>
<dependency> <groupId> mysql</groupId>
<artifactId> mysql-connector-java</artifactId>
<version> 5.0.5</version>
</dependency>

</dependencies>

</project>

操作类

package nx.database;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;

import javax.sql.DataSource;

public class StudentsDaoImpl implements StudentsDao{

private DataSource dataSource;
public DataSource getDataSource() {
return dataSource;
}

public void setDataSource(DataSource dataSource) {
this.dataSource = dataSource;
}
public void saveStudents() {

Connection conn=null;
PreparedStatement stmt=null;
try {
conn=dataSource.getConnection();
stmt=conn.prepareStatement("INSERT INTO `data`.`student` (`id`, `name`) VALUES (NULL, 'jiang');");
stmt.execute();

stmt.close();
conn.close();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
System.out.println("保存学生信息成功！");
}

}

beans.xml（注意，数据库的密码替换成你自己的密码）

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd"> <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver"></property>
<property name="url" value="jdbc:mysql://www.itbuluoge.com:3306/wordpress"></property>
<property name="username" value="root"></property>
<property name="password" value="1234451"></property>
</bean>
<bean id="userImpl" class="nx.database.StudentsDaoImpl">
<property name="dataSource" ref="dataSource"></property>
</bean>
</beans>

测试类

package nx.database;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class Test {

/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
ApplicationContext ctx=new ClassPathXmlApplicationContext("nx/database/beans.xml");
StudentsDaoImpl userImpl=(StudentsDaoImpl)ctx.getBean("userImpl");
userImpl.saveStudents();
}

}

在完成后，查看数据库，发现已经有了数据