java - 用户 'root' @'localhost' 的访问被拒绝(使用密码 : YES) IN WAMPSERVER

Question

我正在使用 Wampserver。我目前正在jsp中编程，但它给了我一个错误: 用户“root”@“localhost”的访问被拒绝(使用密码:YES)

我的代码是:

    <%@ page import ="java.sql.*" %>
    <%
    try{
    String user = request.getParameter("uname");    
    String pwd = request.getParameter("pass");
String fname = request.getParameter("fname");
String lname = request.getParameter("lname");
String email = request.getParameter("email");
Class.forName("com.mysql.jdbc.Driver").newInstance();
Connection con = DriverManager.getConnection("jdbc:mysql://127.0.0.1:3306/quiz",
        "root", " ");
Statement st = con.createStatement();
//ResultSet rs;
int i = st.executeUpdate("insert into members(first_name, last_name, email, uname, pass, regdate) values ('" + fname + "','" + lname + "','" + email + "','" + user + "','" + pwd + "', CURDATE())");
if (i > 0) {
    //session.setAttribute("userid", user);
    response.sendRedirect("welcome.jsp");
   // out.print("Registration Successfull!"+"<a href='index.jsp'>Go to       Login</a>");
} else {
    response.sendRedirect("index.jsp");
}
}
 catch(Exception e)
 {
  out.print(e.getMessage());
 }
 %>

Answer 1

您应该输入正确的密码，而不是(“”)或在 wampServer 中创建新用户

像这样:

'

CREATE USER 'newuser'@'localhost' IDENTIFIED BY 'password';

GRANT ALL PRIVILEGES ON * . * TO 'newuser'@'localhost';

FLUSH PRIVILEGES;

'

您的代码将是:

    <%@ page import ="java.sql.*" %>
    <%
    try{
    String user = request.getParameter("uname");    
    String pwd = request.getParameter("pass");
String fname = request.getParameter("fname");
String lname = request.getParameter("lname");
String email = request.getParameter("email");
Class.forName("com.mysql.jdbc.Driver").newInstance();
Connection con = DriverManager.getConnection("jdbc:mysql://127.0.0.1:3306/quiz",
        "user", "password");
Statement st = con.createStatement();
//ResultSet rs;
int i = st.executeUpdate("insert into members(first_name, last_name, email, uname, pass, regdate) values ('" + fname + "','" + lname + "','" + email + "','" + user + "','" + pwd + "', CURDATE())");
if (i > 0) {
    //session.setAttribute("userid", user);
    response.sendRedirect("welcome.jsp");
   // out.print("Registration Successfull!"+"<a href='index.jsp'>Go to       Login</a>");
} else {
    response.sendRedirect("index.jsp");
}
}
 catch(Exception e)
 {
  out.print(e.getMessage());
 }
 %>