eclipse jsp连接mysql数据库异常
eclipse jsp连接mysql数据库为啥会显示异常,数据表显示不出来,代码如下:
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ page import="java.sql.*"%>
<%@ page import="java.sql.Connection" %>
<%@ page import="java.sql.DriverManager" %>
<%@ page import="java.sql.Statement" %>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<%
try {
Class.forName("com.mysql.jdbc.Driver"); ////加载数据库驱动
String url = "jdbc:MySQL://localhost:3306/RUNOOB?&useSSL=false&serverTimezone=UTC"; //指向数据库table1
String username = "root"; //数据库用户名
String password = "970613"; //数据库用户密码
Connection conn = DriverManager.getConnection(url, username, password); //连接数据库
if(conn != null){
out.print("数据库连接成功!");
out.println("<br />");
out.println("-------------------------------");
out.print("<br />");
Statement stmt = null;
ResultSet rs = null;
String sql ="select * from websites"; //查询语句
stmt = conn.createStatement();
rs = stmt.executeQuery(sql);
out.println("执行结果如下所示:");
out.println("<br />");
out.println("<br />");
out.println("序号" + "\t" + "姓名" + "\t" + "地址"+"\t"+"排名"+"\t"+"国家");
out.println("<br />");
while (rs.next()) {
out.println(rs.getInt("序号")+rs.getString("姓名")+" "+rs.getString("地址")+" "+rs.getInt("排名")+" "+rs.getString("国家")); //将数据库表格查询结果输出
out.print("<br />");
}
}
else{
out.print("连接失败!");
}
}
/*try{
if(rs!=null)rs.close();
if(stmt!=null)stmt.close();
if(connection!=null)connection.close();
}*/
catch (Exception e) {
out.print("数据库连接异常!");
}
%>
</body>
</html>
运行结果如下:
数据库连接成功!
-------------------------------
执行结果如下所示:
序号 姓名 地址 排名 国家
数据库连接异常!