㈠ 如何用jmeter实现mysql数据库增删改查
package basic;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
public class JDBC {
public void findAll() {
try {
// 获得数据库驱动
//由于长时间不写，驱动名和URL都忘记了，不知道对不对，你应该知道的，自己改一下的哈
String url = "jdbc:oracle:thin:@localhost:1521:XE";
String userName = "system";
String password = "system";
Class.forName("oracle.jdbc.driver.OracleDriver");
// 创建连接
Connection conn = DriverManager.getConnection(url, userName,
password);
// 新建发送sql语句的对象
Statement st = conn.createStatement();
// 执行sql
String sql = "select * from users";
ResultSet rs = st.executeQuery(sql);
// 处理结果
while(rs.next()){
//这个地方就是给你的封装类属性赋值
System.out.println("UserName："+rs.getString(0));
}
// 关闭连接
rs.close();
st.close();
conn.close();
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public void delete(){
try {
//步骤还是那六个步骤，前边的两步是一样的
String url = "jdbc:oracle:thin:@localhost:1521:XE";
String userName = "system";
String password = "system";
Class.forName("oracle.jdbc.driver.OracleDriver");
Connection conn = DriverManager.getConnection(url,userName,password);
//这里的发送sql语句的对象是PreparedStatement,成为预处理sql对象，因为按条件删除是需要不定值的
String sql = "delete from users where id = ?";
PreparedStatement ps = conn.prepareStatement(sql);
ps.setInt(0, 1);
int row = ps.executeUpdate();
if(row!=0){
System.out.println("删除成功！");
}
// 关闭连接
rs.close();
st.close();
conn.close();
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}