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jsp连接各种数据库的代码_jsp链接数据库的各种方式以及实现代码

jsp链接数据库的各种方式以及实现代码

一、jsp连接Oracle8/8i/9i数据库(用thin模式)
  testoracle.jsp如下:
  <%@ page contentType="text/html;charset=gb2312"%>
  <%@ page import="java.sql.*"%>
  <html>
  <body>
  <%Class.forName("oracle.jdbc.driver.OracleDriver").newInstance();
  String url="jdbc:oracle:thin:@localhost:1521:orcl";
  //orcl为你的数据库的SID
  String user="scott";
  String password="tiger";
  Connection conn= DriverManager.getConnection(url,user,password);
  Statement stmt=conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE);
  String sql="select * from test";
  ResultSet rs=stmt.executeQuery(sql);
  while(rs.next()) {%>
  您的第一个字段内容为:<%=rs.getString(1)%>
  您的第二个字段内容为:<%=rs.getString(2)%>
  <%}%>
  <%out.print("数据库操作成功,恭喜你");%>
  <%rs.close();
  stmt.close();
  conn.close();
  %>
  </body>
  </html>
二、jsp连接Sql Server7.0/2000数据库
  testsqlserver.jsp如下:
  <%@ page contentType="text/html;charset=gb2312"%>
  <%@ page import="java.sql.*"%>
  <html>
  <body>
  <%Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver").newInstance();
  String url="jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=pubs";
  //pubs为你的数据库的
  String user="sa";
  String password="";
  
  Connection conn= DriverManager.getConnection(url,user,password);
  Statement stmt=conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE);
  String sql="select * from test";
  ResultSet rs=stmt.executeQuery(sql);
  while(rs.next()) {%>
  您的第一个字段内容为:<%=rs.getString(1)%>
  您的第二个字段内容为:<%=rs.getString(2)%>
  <%}%>
  <%out.print("数据库操作成功,恭喜你");%>
  <%rs.close();
  stmt.close();
  conn.close();
  
  %>
  </body>
  </html>
三、jsp连接DB2数据库
  testdb2.jsp如下:
  <%@ page contentType="text/html;charset=gb2312"%>
  <%@ page import="java.sql.*"%>
  <html>
  <body>
  <%Class.forName("com.ibm.db2.jdbc.app.DB2Driver ").newInstance();
  String url="jdbc:db2://localhost:5000/sample";
  //sample为你的数据库名
  String user="admin";
  String password="";
  Connection conn= DriverManager.getConnection(url,user,password);
  Statement stmt=conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE);
  String sql="select * from test";
  ResultSet rs=stmt.executeQuery(sql);
  while(rs.next()) {%>
  您的第一个字段内容为:<%=rs.getString(1)%>
  您的第二个字段内容为:<%=rs.getString(2)%>
  <%}%>
  <%out.print("数据库操作成功,恭喜你");%>
  <%rs.close();
  stmt.close();
  conn.close();
  %>
  </body>
  </html> (代码实验室)
四、jsp连接Informix数据库
  testinformix.jsp如下:
  <%@ page contentType="text/html;charset=gb2312"%>
  <%@ page import="java.sql.*"%>
  <html>
  <body>
  <%Class.forName("com.informix.jdbc.IfxDriver").newInstance();
  String url =
  "jdbc:informix-sqli://123.45.67.89:1533/testDB:INFORMIXSERVER=myserver;
  user=testuser;password=testpassword";
  //testDB为你的数据库名
  Connection conn= DriverManager.getConnection(url);
  Statement stmt=conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE);
  String sql="select * from test";
  ResultSet rs=stmt.executeQuery(sql);
  while(rs.next()) {%>
  您的第一个字段内容为:<%=rs.getString(1)%>
  您的第二个字段内容为:<%=rs.getString(2)%>
  <%}%>
  <%out.print("数据库操作成功,恭喜你");%>
  <%rs.close();
  stmt.close();
  conn.close();
  %>
  </body>
  </html>
五、jsp连接Sybase数据库
  testmysql.jsp如下:
  <%@ page contentType="text/html;charset=gb2312"%>
  <%@ page import="java.sql.*"%>
  <html>
  <body>
  <%Class.forName("com.sybase.jdbc.SybDriver").newInstance();
  String url =" jdbc:sybase:Tds:localhost:5007/tsdata";
  //tsdata为你的数据库名
  Properties sysProps = System.getProperties();
  SysProps.put("user","userid");
  SysProps.put("password","user_password");
  Connection conn= DriverManager.getConnection(url, SysProps);
  Statement stmt=conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE);
  String sql="select * from test";
  ResultSet rs=stmt.executeQuery(sql);
  while(rs.next()) {%>
  您的第一个字段内容为:<%=rs.getString(1)%>
  您的第二个字段内容为:<%=rs.getString(2)%>
  <%}%>
  <%out.print("数据库操作成功,恭喜你");%>
  <%rs.close();
  stmt.close();
  conn.close();
  %>
  </body>
  </html>
六、jsp连接MySQL数据库
  testmysql.jsp如下:
  <%@ page contentType="text/html;charset=gb2312"%>
  <%@ page import="java.sql.*"%>
  <html>
  <body>
  <%Class.forName("org.gjt.mm.mysql.Driver").newInstance();
  String url ="jdbc:mysql://localhost/softforum?user=soft&password=soft1234&useUnicode=true&characterEncoding=8859_1"
  //testDB为你的数据库名
  Connection conn= DriverManager.getConnection(url);
  Statement stmt=conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE);
  String sql="select * from test";
  ResultSet rs=stmt.executeQuery(sql);
  while(rs.next()) {%>
  您的第一个字段内容为:<%=rs.getString(1)%>
  您的第二个字段内容为:<%=rs.getString(2)%>
  <%}%>
  <%out.print("数据库操作成功,恭喜你");%>
  <%rs.close();
  stmt.close();
  conn.close();
  %>
  </body>
  </html>
七、jsp连接PostgreSQL数据库
  testmysql.jsp如下:
  <%@ page contentType="text/html;charset=gb2312"%>
  <%@ page import="java.sql.*"%>
  <html>
  <body>
  <%Class.forName("org.postgresql.Driver").newInstance();
  String url ="jdbc:postgresql://localhost/soft"
  //soft为你的数据库名
  String user="myuser";
  String password="mypassword";
  Connection conn= DriverManager.getConnection(url,user,password);
  Statement stmt=conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE);
  String sql="select * from test";
  ResultSet rs=stmt.executeQuery(sql);
  while(rs.next()) {%>
  您的第一个字段内容为:<%=rs.getString(1)%>
  您的第二个字段内容为:<%=rs.getString(2)%>
  <%}%>
  <%out.print("数据库操作成功,恭喜你");%>
  <%rs.close();
  stmt.close();
  conn.close();
  %>
  </body>
  </html> 

/*conn.jsp */
<%
  String sDBDriver = "COM.ibm.db2.jdbc.app.DB2Driver";
  String sConnStr = "jdbc:db2:faq";
  Connection conn = null;
  Statement stmt = null;
  ResultSet rs=null; 
    try {
        Class.forName(sDBDriver);  
  }
    catch(java.lang.ClassNotFoundException e)   {
    out.print("faq(): " + e.getMessage());
  }
  
  try{
    conn = DriverManager.getConnection(sConnStr,"wsdemo","wsdemo1");    
    stmt = conn.createStatement();
  }catch(SQLException e){
    out.print(e.toString());
  }
%>

<%@ page language="java" import="java.sql.*" %>
<%@ page contentType="text/html; charset=gb2312" %>
<%@ include file="conn.jsp" %>
<%
.......
int pages=0;
int pagesize=10;
ResultSet result = null;
ResultSet rcount = null;

pages = new Integer(request.getParameter("pages")).intValue();

if (pages>0)
{

String sql=" state='我不傻'";
int count=0;
try {
rcount = stmt.executeQuery("SELECT count(id) as id from user where "+sql);
catch(SQLException ex) {
out.print("aq.executeQuery: " + ex.getMessage());
}
if(rcount.next())
count = rcount.getInt("id");
rcount.close();

if (count>0)

sql="select * from user where "+sql;
try {
result = stmt.executeQuery(sql);
  } 
catch(SQLException ex) {
out.print("aq.executeQuery: " + ex.getMessage());
}

int i;
String name;
// result.first();
// result.absolute((pages-1)*pagesize);
// 此方法jdbc2.0支持。编译通过,但执行不过,不知是不是跟驱动有关,只好用下面的笨办法。
for(i=1;i<=(pages-1)*pagesize;i++)
result.next();
for(i=1;i<=pagesize;i++) {
if (result.next()) {
name=result.getString("name");
out.print(name);
}
result.close();
int n= (int)(count/pagesize);
if (n*pagesize<count) n++;
if (n>1)
{
for(i=1;i<=n;i++)
  out.print("<a href=query.jsp?pages="+i+">"+i+" </a>");
}
}
}
%>

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