How to use JAVA-JSP-JDBC-Tomcat to connect to SQL Server database
first step
Switch to SSMS, open the properties of the login object, and change the server authentication to SQL Server and Windows authentication mode
Open the server properties, click on security, and switch.
Second step
Specify a new password for the login name sa and change the status to login enabled
It is best to restart SSMS after switching
third step
Open the SQL Server configuration manager and switch all the protocols in the network configuration to the enabled state
Change the TCP port of IPALL to 1433 to facilitate connection to jdbc
Next, you need to download a jdbc
Link: https://pan.baidu.com/s/1Aei3A0fa6XSc6e78fGywIQ
Extraction code: vohc
This is the file of jdbc and tomcat
After that is the operation on eclipse
import java.sql.*;
public class jdbctest {
public static void main(String[] args)
{
try
{
Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
System.out.println("Driver loaded successfully");
Connection conn = DriverManager.getConnection("jdbc:sqlserver://127.0.0.1:1433;DataBaseName=XSCJ", "sa", "123456");
System.out.println("Link to the database successfully");
String sql = "select * from XS_KC";
System.out.println("search successful");
Statement st = conn.createStatement();
ResultSet rs=st.executeQuery(sql)
while(rs.next())
{
String s1 = rs.getString(1);
String s2 = rs.getString(2);
int s3 = rs.getInt(3);
System.out.print(s1+":"+s2+":"+s3+"\n");
}
rs.close();
st.close();
conn.close();
}
catch(Exception e)
{
System.out.println("Driver loading failed");
}
}
}
Load the driver
Then unzip Tomcat and add the location of the jdk file to JAVA_HOME
the fourth step
Use eclipse's Dynamic Web Project to create jsp
If there is no Dynamic Web Project, the specific download steps are as follows
Open install new software in help
choose your own eclip version number
After loading is complete
drop down selection
- Eclipse Java EE Developer Tools
- Eclipse Java Web Developer Tools
- Eclipse Web Developer Tools
- Eclipse XML Editors and Tools
After the progress bar reaches 100%, the Dynamic Web Project file can be created
Then you can use jsp to connect to sqlserver
The following is the operation of adding, deleting, modifying and checking
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ page import="java.sql.*"%>
<%@ page import="java.util.Scanner"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Database experiment</title>
</head>
<body>
<%
try
{
Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
out.println("Drive loaded successfully");
Connection conn = DriverManager.getConnection("jdbc:sqlserver://127.0.0.1:1433;DataBaseName=XSCJ", "sa", "123456");
out.println("Database connection is successful");
String sql_q = "select * from student";
Statement st = conn.createStatement();
ResultSet rs=st.executeQuery(sql_q);
out.println("<table border='2'>");
out.println("<tr>");
out.println("<td>Student ID</td><td>Name</td>");
out.println("</tr>");
while(rs.next())
{
String s1 = rs.getString(1);
String s2 = rs.getString(2);
out.print("<tr><td>"+s1+"</td><td>"+s2+"</td></tr>");
}
out.println("</table>");
rs.close();
st.close();
String sql_d = "delete from student where name='Fang Lulu'";
PreparedStatement st_d = conn.prepareStatement(sql_d);
int rs_d = st_d.executeUpdate();
out.println("successfully deleted");
st_d.close();
String sql_u = "update XS_KC set score = 100 where student number = '020101' and course number = '101'";
PreparedStatement st_u = conn.prepareStatement(sql_u);
int rs_u = st_u.executeUpdate();
out.println("Successfully modified");
st_u.close();
String sql_in = "insert into KC (course number, course name, credits) values('120','Advanced Mathematics', 4)";
PreparedStatement st_in = conn.prepareStatement(sql_in);
int rs_in = st_in.executeUpdate();
out.println("Increase Success");
st_in.close();
conn.close();
}
catch(Exception e)
{
out.println("succ failed");
}
%>
</body>
</html>
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