育才学习网1. jsp连接数据库代码怎么写
给你一个javabean吧
package openjdbc;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
public class openjdbc {
private String url = "jdbc:sqlserver://localhost:1433;DatabaseName=学生信息管理"； //数据库名
private String userName = "sa"； //数据库用户名
private String password = "Lui1988*"； //数据库密码
private ResultSet rs;
private Connection conn = null； //连接对象
private Statement stmt = null;
public openjdbc()
{
try {
Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
} catch (ClassNotFoundException e) {
System.err.println("openjdbc():"+e.getMessage());
}
}
public ResultSet executeQuery(String sql)
{
try
{
conn = DriverManager.getConnection(url, userName, password);
stmt=conn.createStatement();
rs=stmt.executeQuery(sql);
}
catch(SQLException e)
{
System.err.println("rs.exectueQuery:"+e.getMessage());
}
return rs;
}
}
相应的数据自己改下，这个得要数据库的jdbc驱动！
2. jsp连接数据库代码填写
try{Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver");String url="jdbc:microsoft:sqlserver://127.0.0.1:1433;DatabaseName=WebExam";Connection conn = DriverManager.getConnection(url,"sa","123456");Statement stmt = conn.createStatement();String sql = "select * from tb_user where userName='"+sUserNam+"' and password='"+sPWD+"' ";ResultSet rs = stmt.executeQuery(sql);if (!rs.next()) out.println（"用户名或密码错误！"）；else response.sendRedirect("index.jsp");}。
3. 怎样用jsp连接mysql数据库 代码怎么写啊
Class.forName("com.mysql.jdbc.Driver");
Connection con= DriverManager.getConnection("jdbc:mysql://10.10.2.188:3306/bbs?useUnicode=true&characterEncoding=utf8",
"root","yaoweijq");
Statement stat= con.createStatement();
第一句是加载数据库驱动，
自己下一个加到类库中，
我不知道要不要放到tomcat目录下。
第二句是连接数据库，
IP自己改，测试用localhost
3306是端口，mysql的
后面是数据库名你也可以用表名
再后面root是用户名yaoweijq是密码 都是mysql的
大体就是这样
4. JSP连接数据库要有几种方法,要怎么连接
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>
5. jsp查询数据库代码
这种方法并不是很常用，只是页面的相关操作，代码太多，所以中间省略了部分 <%Object userUID=session.getAttribute("USERID");String uid=""; if(userUID!=null){ uid=(String)userUID; }else{ response.sendRedirect("../Public/loseSession.jsp");} try{String today=DateUtils.getInstance().getToday();String userIP=request.getRemoteAddr();String sql="";String getPage=request.getParameter("toPage"); sql=cu.exchange(request.getParameter("sql")); if (sql==null||sql.equals("")){String getDepId="";String getPoliticalPosition="";String getTechnicalPosition="";String getPoliticalLevel="";String getTechnicalLevel="";String getDegreeCode="";String getGrade="";String getLongevity=""; String getAllowance="";long depId=0;long degreeCode=0;long politicalPosition=0;long technicalPosition=0;long politicalLevel=0;long technicalLevel=0;long grade=0;long longevity=0;long allowance=0;String[] postID=null;String post="";String userID="";String userName="";String address="";getDepId=request.getParameter("depId");depId=Long.parseLong(getDepId.trim()); getDegreeCode=request.getParameter("degreeCode");if (getDegreeCode!=null) {degreeCode=Long.parseLong(getDegreeCode.trim());}getPoliticalPosition=request.getParameter("politicalPosition");if (getPoliticalPosition!=null) {politicalPosition=Long.parseLong(getPoliticalPosition.trim()); }post=request.getParameter("post");if(post!=null&&post.trim().equals("1")) postID=request.getParameterValues("dyourlocation");getTechnicalPosition=request.getParameter("technicalPosition");if (getTechnicalPosition!=null) {technicalPosition=Long.parseLong(getTechnicalPosition.trim()); }getPoliticalLevel=request.getParameter("politicalLevel");if (getPoliticalLevel!=null) { politicalLevel=Long.parseLong(getPoliticalLevel.trim()); } getTechnicalLevel=request.getParameter("technicalLevel");if (getTechnicalLevel!=null) {technicalLevel=Long.parseLong(getTechnicalLevel.trim()); } getGrade=request.getParameter("grade");if (getGrade!=null) {grade=Long.parseLong(getGrade.trim()); } getLongevity=request.getParameter("longevity");if (getLongevity!=null) {longevity=Long.parseLong(getLongevity.trim()); } getAllowance=request.getParameter("allowance");if (getAllowance!=null) { allowance=Long.parseLong(getAllowance.trim());}userID=ParamUtils.getParameter(request,"userID")；//用户代码userName=ParamUtils.getParameter(request,"userName")；//用户名称address=ParamUtils.getParameter(request,"address")；//得到要转入的页面 sql="select org_user.* from org_user,org_detail where org_user.user_id=org_detail.user_id";if (depId!=0){ sql=sql+" and org_user.department_id="+depId+"";} if (userID!=null&&userID!="") { sql=sql+" and org_user.user_id='"+userID+"'";} if (userName!=null&&userName!=""){ sql=sql+" and org_user.name like '%"+userName+"%'";} if (address!=null&&address!="") { sql=sql+" and org_user.address like '%"+address+"%'"; }if(post!=null&&!post.trim().equals("0")) { sql=sql+" and org_detail.post in ("; for(int i=0;i0) { if (cnt%pageSize==0) cntPage=cnt/pageSize; else cntPage=cnt/pageSize+1; } else cntPage=0; if (getPage==null) { getPage="1"; curPage=1; } else curPage=Integer.parseInt(getPage.trim());%>