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目前我正尝试从MD5中加密的数据库中获取密码。 E.G:我怎样才能加密MD5变量?
INSERT INTO Customer VALUES (1001, "Smith", "J.", "Alan", 'Mr', "43 The Glebe", "Mugwell Hill", "Nodnol", "", "N10 4SB", MD5("Alan"), "Mugwell Hill");
这种情况下的密码是Alan。 我想比较用户输入的密码。
String userid = request.getParameter("uname");
String pwd = request.getParameter("pass");
Class.forName("com.mysql.jdbc.Driver");
Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/Erehwon","root", "");
Statement st = con.createStatement();
ResultSet rs;
rs = st.executeQuery("select * from Customer where customer_number='" + userid + "' and passwd ='" + pwd + "'");
if (rs.next()) {
session.setAttribute("userid", userid);
//out.println("welcome " + userid);
//out.println("<a href='logout.jsp'>Log out</a>");
response.sendRedirect("success.jsp");
} else {
out.println("Invalid password <a href='login_page.jsp'>try again</a>");
out.println(pwd);
out.println(userid);
}
正如你可能会告诉这是通过无效的密码,因为输入值不是MD5格式。无论如何,我可以将密码转换为MD5或解密数据库密码,以便它们匹配?
''' “SELECT * FROM客户那里CUSTOMER_NUMBER ='” + userid +“'和passwd = MD5('”+ pwd +“')”)''''' – waplet 2015-03-02 15:36:28