Home > Database > Mysql Tutorial > JDBC连接常用数据库 基本的CURD

JDBC连接常用数据库 基本的CURD

WBOY
Release: 2016-06-07 15:05:43
Original
1034 people have browsed it

欢迎进入Java社区论坛,与200万技术人员互动交流 >>进入 JDBC连接各个数据库的className与url JDBC连接DB2 private String className="com.ibm.db2.jdbc.net.DB2Driver"; private String url="jdbc:db2://localhost:8080/lwc"; JDBC连接Microsoft SQLServer

欢迎进入Java社区论坛,与200万技术人员互动交流 >>进入

  JDBC连接各个数据库的className与url

  JDBC连接DB2

  private String className="com.ibm.db2.jdbc.net.DB2Driver";

  private String url="jdbc:db2://localhost:8080/lwc";

  JDBC连接Microsoft SQLServer(microsoft)

  private String className="com.microsoft.jdbc.sqlserver.SQLServerDriver";

  private String url="jdbc:microsoft:sqlserver://

  localhost:1433;SelectMethod=Cursor;dataBaseName=lwc";

  JDBC连接Sybase(jconn2.jar)

  private String className="com.sybase.jdbc2.jdbc.SybDriver";

  private String url="jdbc:sybase:Tds:localhost:2638";

  JDBC连接MySQL(mm.mysql-3.0.2-bin.jar)

  private String className="org.gjt.mm.mysql.Driver";

  private String url="jdbc:mysql://localhost:3306/lwc";

  JDBC连接PostgreSQL(pgjdbc2.jar)

  private String className="org.postgresql.Driver";

  private String url="jdbc:postgresql://localhost/lwc";

  JDBC连接Oracle(classes12.jar)

  private String className="oracle.jdbc.driver.OracleDriver";

  private String url="jdbc:oracle:thin:@localhost:1521:lwc";

  JDBC连接数据库案例

  package com.itlwc;

  import java.sql.Connection;

  import java.sql.DriverManager;

  import java.sql.ResultSet;

  import java.sql.SQLException;

  import java.sql.Statement;

  public class DBConnection {

  private static Connection conn = null;

  private String user = "";

  private String password = "";

  private String className = "com.microsoft.jdbc.sqlserver.SQLServerDriver";

  private String url = "jdbc:microsoft:sqlserver://"

  + "localhost:1433;SelectMethod=Cursor;dataBaseName=lwc";

  private DBConnection() {

  try {

  Class.forName(this.className);

  conn = DriverManager.getConnection(url, user, password);

  System.out.println("连接数据库成功");

  } catch (ClassNotFoundException e) {

  System.out.println("连接数据库失败");

  } catch (SQLException e) {

  System.out.println("连接数据库失败");

  }

  }

  public static Connection getConn() {

  if (conn == null) {

  conn = (Connection) new DBConnection();

  }

  return conn;

  }

  // 关闭数据库

  public static void close(ResultSet rs, Statement state, Connection conn) {

  if (rs != null) {

  try {

  rs.close();

  } catch (SQLException e) {

  e.printStackTrace();

  }

  rs = null;

  }

  if (state != null) {

  try {

  state.close();

  } catch (SQLException e) {

  e.printStackTrace();

  }

  state = null;

  }

  if (conn != null) {

  try {

  conn.close();

  } catch (SQLException e) {

  e.printStackTrace();

  }

  conn = null;

  }

  }

  // 测试数据库连接是否成功

  public static void main(String[] args) {

  getConn();

  }

  }

  基本CURD

  获取数据库连接请查考JDBC连接常用数据库

  private Connection conn = DBConnection.getConn();

  增加方法

  使用拼sql增加

  public void add1(Student student) {

  String sql = "insert into student values(" + student.getId() + ",'"

  + student.getCode() + "','" + student.getName() + "',"

  + student.getSex() + "," + student.getAge() + ")";

  PreparedStatement ps = null;

  try {

  ps = conn.prepareStatement(sql);

  ps.executeUpdate();

  } catch (SQLException e) {

  e.printStackTrace();

  }

  DBConnection.close(null, ps, conn);

  }

[1] [2] [3] 

JDBC连接常用数据库 基本的CURD

source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template