java代码连接本地SQL server数据库总结

    1.需求分析

在数据库学习当中,我接触到了一款新的数据库:SQL SERVER数据库;它与MYSQL相比有更强大的功能,而且连接

方式和MYSQL大同小异,今天就总结一下它的连接方法。

    2.前期准备

(1)在连接本地sqlserver数据库之前,我们要先启动它的TCP/IP协议:

在sql server配置管理器中找到MSSQLSERVER的协议,打开TCP/IP协议

确认ip1的端口是否为1443;完成后通过鼠标右键启动TCP/IP协议。

java代码连接本地SQL server数据库总结

java代码连接本地SQL server数据库总结

(2)导入jar包

在项目中导入msbase.jar,   mssqlserver.jar,   msutil.jar

jar包下载网址https://mvnrepository.com/

    3.连接代码

 增:

  //表单提交的数据  request.setCharacterEncoding("UTF-8");  String name= request.getParameter("name");  String num=request.getParameter("num");  String sex= request.getParameter("sex");  String birth= request.getParameter("birth");  String address= request.getParameter("address");
    Connection connection =null;  try {    Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver");    String url="jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=student";//DatabaseName后是要访问的数据库名    String user="sa";    String password=""; //登录密码    connection= DriverManager.getConnection(url,user,password);    if(connection!=null)    {        //out.print("Success connect MySql server!");    }    else    {        out.print("fail connect MySql server!");    }} catch (Exception e) {    out.print(" connect MySql server wrong!");}String sql = "insert into tablename(num,name,sex,birth,address) values(?,?,?,?,?)";//tablename为要访问的表名,value前面括号中是要插入的列名,后面是具体值PreparedStatement ps = null;boolean flag = false;int a = 0;   //下面num,name,sex,birth,address为定义的变量,我的是通过上面表单提交获取的    ps = connection.prepareStatement(sql);    ps.setString(1, num);    ps.setString(2, name);    ps.setString(3, sex);    ps.setString(4, birth);    ps.setString(5, address);    a = ps.executeUpdate();//a用来判断操作是否成功,若a!=0则表示操作成功

 删:

         //与增相似,注解同上

  request.setCharacterEncoding("UTF-8");  String id=request.getParameter("id");  Connection connection =null;  String db_url="jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=student"; try {    Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver");    String url="jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=student";    String user="sa";    String password="";      connection= DriverManager.getConnection(url,user,password);    if(connection!=null)    {        //out.print("Success connect MySql server!");    }    else    {        out.print("fail connect MySql server!");    }} catch (Exception e) {    out.print(" connect MySql server wrong!");}String sql = "delete from students where id =" + id+ " ";Statement stmt=connection.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE);int a = 0;a = stmt.executeUpdate(sql);

 改:

//注解同上

request.setCharacterEncoding("UTF-8");String id=request.getParameter("id");String name= request.getParameter("name");String num=request.getParameter("num");String sex= request.getParameter("sex");String birth= request.getParameter("birth");String address= request.getParameter("address");Connection connection =null;String db_url="jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=student";try {    Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver");    String url="jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=student";    String user="sa";    String password=""; //    connection= DriverManager.getConnection(url,user,password);    if(connection!=null)    {        //out.print("Success connect MySql server!");    }    else    {        out.print("fail connect MySql server!");    }} catch (Exception e) {    out.print(" connect MySql server wrong!");}String sql="update students set num=‘" + num+ "‘,name=‘"+name+"‘,sex=‘"+sex+"‘,birth=‘"+birth+"‘,address=‘"+address+"‘ where id="+id+"";Statement stmt=connection.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE);int a=0;    a = stmt.executeUpdate(sql);

 查:

//注解同上

Connection connection=null;try {  Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver");  String db_url="jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=student";  String user="sa";  String password=""; // connection= DriverManager.getConnection(db_url,user,password);  if(connection!=null)  {    //out.print("Success connect MySql server!");  }  else  {    out.print("fail connect MySql server!");  }} catch (Exception e) {  out.print(" connect MySql server wrong!");}Statement stmt=connection.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE);ResultSet rs = null;String sql = " select * from students"; rs = stmt.executeQuery(sql);

//此时我们获取的数据存在rs中我们可根据需求通过

while(rs.next()){/*你需要的方法*/}进一步操作数据

    4.总结:

sqlserver数据库的操作与mysql有很大的相似之处,正是因为我对mysql数据库操作的熟练掌握才能让我在这次实验中

没有走弯路;所以初学某类事物时一定不要浅尝辄止。

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