sqlite安裝與學習

圖形化管理工具：sqlite developer

創建數據庫：sqlite3 test.db


創建表格：
create table employee(
id integer primary key autoincrement,
name varchar(20),
pwd varchar(20),
age integer
);


插入數據：
insert into employee(name,pwd,age) values('zhaodeng','1234','25');
insert into employee(name,pwd,age) values('Tom','1234','30');


查詢顯示數據
select * from employee;

cmd操作展示：

Microsoft Windows [版本 6.1.7601]
版權所有 (c) 2009 Microsoft Corporation。保留所有權利。
C:\Users\ZhaoD>d:

D:\>cd D:\Jdk-eclipsejee-tomcat-ant\sqlite

D:\Jdk-eclipsejee-tomcat-ant\sqlite>sqlite3 test.db
SQLite version 3.11.1 2016-03-03 16:17:53
Enter ".help" for usage hints.
sqlite> create table employee(
   ...> id integer primary key autoincrement,
   ...> name varchar(20),
   ...> pwd varchar(20),
   ...> age integer
   ...> );
sqlite> insert into employee(name,pwd,age) values('zhaodeng','1234','25');
sqlite> insert into employee(name,pwd,age) values('Tom','1234','30');
sqlite> select * from employee;
1|zhaodeng|1234|25
2|Tom|1234|30

sqlite> 

------------------------------------------------------------------------------------

JDBC連接sqlite數據庫程序

package bo;

import java.sql.Statement;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;

public class DbTEst {

	public static void main(String[] args) {
		// TODO Auto-generated method stub

		List<Employee> employees = fetchData();
		for (Employee e : employees) {
			System.out.println(e.toString());
		}
		
		Employee employee = login("Tom", "1234");
		if(employee!=null){
			System.out.println("登錄成功，歡迎"+employee.getName());
			System.out.println(employee.toString());
		}else{
			System.out.println("登錄失敗");
		}

	}

	private static Employee login(String name, String pwd) {
		Employee employee = null;

		Connection connection = null;
		try {
			Class.forName("org.sqlite.JDBC");
			connection = DriverManager.getConnection("jdbc:sqlite:D:/Jdk-eclipsejee-tomcat-ant/sqlite/test.db");

			String string = "select * from employee where name =? and pwd =?";
			PreparedStatement statement = (PreparedStatement) connection.prepareStatement(string);
			statement.setString(1, name);
			statement.setString(2, pwd);

			ResultSet resultSet = statement.executeQuery();
			if (resultSet.next()) {
				employee = new Employee(resultSet.getInt(1), resultSet.getString(2), resultSet.getString(3),
						resultSet.getInt(4));
			}
		} catch (ClassNotFoundException e) {
			e.printStackTrace();
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		finally {
			if (connection != null) {
				try {
					connection.close();
				} catch (SQLException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
			}
		}
		return employee;

	}

	private static List<Employee> fetchData() {
		List<Employee> employees = new ArrayList<Employee>();
		Employee employee = null;

		Connection connection = null;
		try {
			Class.forName("org.sqlite.JDBC");
			connection = DriverManager.getConnection("jdbc:sqlite:D:/Jdk-eclipsejee-tomcat-ant/sqlite/test.db");
			Statement statement = (Statement) connection.createStatement();

			String string = "select * from employee";
			ResultSet rSet = statement.executeQuery(string);
			while (rSet.next()) {
				employee = new Employee(rSet.getInt(1), rSet.getString(2), rSet.getString(3), rSet.getInt(4));
				employees.add(employee);
			}

		} catch (ClassNotFoundException e) {
			e.printStackTrace();

		} catch (SQLException e) {
			// TODO: handle exception
			e.printStackTrace();
		} finally {
			if (connection != null) {
				try {
					connection.close();
				} catch (SQLException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
			}

		}
		return employees;
	}

}