jsp link mysql step method

How to connect jsp to mysql: first download the JDBC driver from the mysql official website; then put the jar package into the lib folder of the tomcat installation directory; then create test data in mysql; finally create it in eclipse Project and create a JSP file to run.

Recommended: "mysql video tutorial"

jsp connection MYSQL database tutorial

Steps:

1. Download the JDBC driver from the mysql official website. URL: https://dev.mysql.com/downloads/connector/j/

2. Put the jar package (mysql-connector-java-5.1.41-bin.jar) into tomcat Under the lib folder of the installation directory, for example, my directory is: C:\apache-tomcat-8.0.36-windows-x64\apache-tomcat-8.0.36\lib. Restart tomcat.

3. Create test data in mysql. First create a database named testdb; then create a table named testform. The table has three fields: id, name, age; finally add a few lines of tests data.

4.Create a project in eclipse and create a JSP file named test.jsp. The test.jsp code is as follows: (Note to modify the corresponding parameters)

<%@ page contentType="text/html; charset=utf-8" language="java" import="java.sql.*" errorPage="" %>  
    <%  
    //驱动程序名  
    String driverName = "com.mysql.jdbc.Driver";  
    //数据库用户名  
    String userName = "root";  
    //密码  
    String userPasswd = "123456";  
    //数据库名  
    String dbName = "testdb";  
    //表名  
    String tableName = "testform";  
    //联结字符串  
    String url = "jdbc:mysql://localhost/" + dbName + "?user=" + userName + "&password=" + userPasswd;  
    //加载驱动  
    Class.forName("com.mysql.jdbc.Driver").newInstance();  
    //建立连接  
    Connection conn = DriverManager.getConnection(url);     
    //创建Statement（负责执行sql语句）  
    Statement stmt = conn.createStatement();  
    String sql="select * from " + tableName;  
    //获得数据结果集合  
    ResultSet rs = stmt.executeQuery(sql);  
    //依次遍历结果集（表中的记录）  
    while(rs.next())  
    {  
        //依据数据库中的字段名打印数据  
        out.println(rs.getString("name"));  
        out.println(rs.getString("age"));  
    }  
    //关闭连接  
    rs.close();  
    stmt.close();  
    conn.close();  
    %>

5. Run the jsp file.

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