3
我想创建一个基于播放框架示例'zentask'的登录页面。播放框架：表单数据不通过
当我尝试在登录页面提交表单时，user_name和user_pass为空。
命令提示符输出：
[info] play - database [default] connected at jdbc:mysql://localhost/smgts2
[info] play - Application started (Dev)
null null
Application.java：
package controllers;
import play.*;
import play.mvc.*;
import play.data.*;
import static play.data.Form.*;
import models.*;
import views.html.*;
public class Application extends Controller {
// -- Authentication
public static class Login {
public String user_name;
public String user_pass;
public String validate() {
if(Accounts.authenticate(user_name, user_pass) == null) {
return "Invalid user or password";
}
return null;
}
}
/**
* Login page.
*/
public static Result login() {
return ok(
login.render(form(Login.class))
);
}
/**
* Handle login form submission.
*/
public static Result authenticate() {
Form<Login> loginForm = form(Login.class).bindFromRequest();
if(loginForm.hasErrors()) {
return badRequest(login.render(loginForm));
} else {
session("user_name", loginForm.get().user_name);
return redirect(
routes.Home.index()
);
}
}
/**
* Logout and clean the session.
*/
public static Result logout() {
session().clear();
flash("success", "You've been logged out");
return redirect(
routes.Application.login()
);
}
}
login.scala.html
@(form: Form[Application.Login])
@main(Html("School Management System")) {
<style type="text/css">
body {
padding-top: 60px;
padding-bottom: 40px;
background-color: #f5f5f5;
}
</style>
@helper.form(routes.Application.authenticate, 'class -> "form-signin") {
<h2 class="form-signin-heading">Sign-in to SMGTS</h2>
@if(form.hasGlobalErrors) {
<p class="text-error">
@form.globalError.message
</p>
}
@if(flash.contains("success")) {
<p class="text-success">
@flash.get("success")
</p>
}
<p>
<input type="text" class="input-block-level" name="user_name" placeholder="Username" value='@form("user_name").value'>
</p>
<p>
<input type="password" class="input-block-level" name="user_pass" placeholder="Password">
</p>
<p>
<button class="btn btn-large btn-primary" type="submit">Sign in</button>
</p>
}
}
routes文件：
# Routes
# This file defines all application routes (Higher priority routes first)
# ~~~~
# Home page
GET / controllers.Home.index()
# Authentication
GET /login controllers.Application.login()
POST /login controllers.Application.authenticate()
GET /logout controllers.Application.logout()
# Map static resources from the /public folder to the /assets URL path
GET /assets/*file controllers.Assets.at(path="/public", file)
Accounts.java（模型类）：
package models;
import java.util.*;
import javax.persistence.*;
import play.db.ebean.*;
import play.data.format.*;
import play.data.validation.*;
import com.avaje.ebean.*;
@Entity
@Table(name="user_account")
public class Accounts extends Model {
@Id
@Constraints.Required
public Long acc_id;
@Constraints.Required
@Formats.NonEmpty
public String user_name;
@Constraints.Required
@Formats.NonEmpty
public String user_pass;
@Constraints.Required
public int group_id;
// Queries
public static Finder<Long,Accounts> find = new Finder<Long,Accounts>(Long.class, Accounts.class);
public static Accounts authenticate(String user_name, String user_pass) {
System.out.println(user_name + " " + user_pass); // Check if form data is passed.
return find.where()
.eq("user_name", user_name)
.eq("user_pass", user_pass)
.findUnique();
}
}
I've been checking if the variable names in Application.java and they're the same with the input fields in login.scala.html.
凡在你的代码，你把像'Logger.debug（）'或'是System.out.print（）'产生''为和user_name''user_pass null'值'。当我尝试上面提供的代码时，它似乎很好。在'login'形式提交非''null'值后，它不会产生'null'值。 – 2013-04-21 00:42:47
对不起，我发布了错误的代码。重新编辑我的帖子。 我在'Accounts.java' - >'public static Accounts authenticate'模型类中插入''System.out.println（“user_name +”“user_pass”）;''。 我仍然试图编辑代码，在字段中输入admin/admin，但我最终仍然在输出中有空值。 – Jigs 2013-04-21 01:11:16
我已经将它上传到github的回购站中，如果它能让它更容易。这里是链接：https://github.com/gscruz/smgts2-git – Jigs 2013-04-21 01:12:34