本周我开始学习Play。现在我正在尝试编写一个用户登录时创建会话的代码。 对不起,但是帖子看起来有点乱,因为我是新用户,不允许发布图片。
我正在使用Java play 2.3.8和eclipse 4.4.1(我已经尝试了我在这里看到的其他技巧)
目前我总是收到此错误消息:
play.api.Application $$ anon $ 1:执行异常[[RuntimeException:java.lang.reflect.InvocationTargetException]] at play.api.Application $ class.handleError(Application.scala:296)〜[play_2.11-2.3.6.jar:2.3.6] at play.api.DefaultApplication.handleError(Application.scala:402)[play_2.11-2.3.6.jar:2.3.6] at play.core.server.netty.PlayDefaultUpstreamHandler $$ anonfun $ 3 $$ anonfun $ applyOrElse $ 4.apply(PlayDefaultUpstreamHandler.scala:320)[play_2.11-2.3.6.jar:2.3.6] at play.core.server.netty.PlayDefaultUpstreamHandler $$ anonfun $ 3 $$ anonfun $ applyOrElse $ 4.apply(PlayDefaultUpstreamHandler.scala:320)[play_2.11-2.3.6.jar:2.3.6] 在scala.Option.map(Option.scala:145)[scala-library-2.11.1.jar:na] 引起:java.lang.RuntimeException:java.lang.reflect.InvocationTargetException at play.data.Form.bind(Form.java:394)〜[play-java_2.11-2.3.6.jar:2.3.6] at play.data.Form.bindFromRequest(Form.java:221)〜[play-java_2.11-2.3.6.jar:2.3.6] 在controllers.Application.authenticate(Application.java:70)〜[classes /:na] 在Routes $$ anonfun $ routes $ 1 $$ anonfun $ applyOrElse $ 11 $$ anonfun $ apply $ 11.apply(routes_routing.scala:209)〜[classes /:na] 在Routes $$ anonfun $ routes $ 1 $$ anonfun $ applyOrElse $ 11 $$ anonfun $ apply $ 11.apply(routes_routing.scala:209)〜[classes /:na] 引起:java.lang.reflect.InvocationTargetException:null at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)〜[na:1.8.0_31] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)〜[na:1.8.0_31] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)〜[na:1.8.0_31] 在java.lang.reflect.Method.invoke(Method.java:483)〜[na:1.8.0_31] at play.data.Form.bind(Form.java:391)〜[play-java_2.11-2.3.6.jar:2.3.6] 引起:java.lang.RuntimeException:DataSource用户为空? 在com.avaje.ebeaninternal.server.lib.sql.DataSourcePool。(DataSourcePool.java:204)〜[avaje-ebeanorm-3.3.4.jar:na] at com.avaje.ebeaninternal.server.core.DefaultServerFactory.getDataSourceFromConfig(DefaultServerFactory.java:419)~ [avaje-ebeanorm-3.3.4.jar:na] at com.avaje.ebeaninternal.server.core.DefaultServerFactory.setDataSource(DefaultServerFactory.java:385)〜[avaje-ebeanorm-3.3.4.jar:na] 在com.avaje.ebeaninternal.server.core.DefaultServerFactory.createServer(DefaultServerFactory.java:163)〜[avaje-ebeanorm-3.3.4.jar:na] at com.avaje.ebeaninternal.server.core.DefaultServerFactory.createServer(DefaultServerFactory.java:125)~ [avaje-ebeanorm-3.3.4.jar:na]
这是我的方法,名为:
public static Result authenticate() {
Form<Login> loginForm = Form.form(Login.class);
Login loginUser = loginForm.bindFromRequest().get();
if (!usersList.getUsers().contains(loginForm)) {
return ok(login.render("test"));
} else {
session().clear();
session("email", loginForm.get().email);
System.out.println("ich bin hier");
return redirect(routes.Application.login());
}
}
这是模型(getter和setter也在那里):
public class Login {
public Login(){
}
public String email;
public String password;
public Login(String email, String password){
this.email=email;
this.password=password;
}
public String validate() {
if (Users.authenticate(email, password) == null) {
return "Invalid user or password";
}
return null;
}
public static Finder<String,Login> find = new Finder<String,Login>(
String.class, Login.class
);
这里是scala.html文档:
<div class="Login">
<br>
<br>
<br>
<br>
<h1>Login</h1>
<form action="@routes.Application.authenticate()" method="post">
<p><input type="email" name="email" placeholder="Email" value=""></p>
<p><input type="password" name="password" placeholder="Password" value=""></p>
<p class="submit"><input type="submit" name="Login" value="Login"></p>
</form>
最后但并非最不重要的是,我的浏览器中的错误消息说第70行引发了异常:
[RuntimeException:java.lang.reflect.InvocationTargetException]
System.out.println(&#34; nach loginform&#34;); 68 69 //System.out.println(loginForm.bindFromRequest()。toString()); 70登录loginUser = loginForm.bindFromRequest()。get(); 71 72 System.out.println(loginForm.toString()); 73 //表单loginForm = form(Login.class).bindFromRequest(); 74个
75 if(!usersList.getUsers()。contains(loginForm)){
提前感谢帮助我解决这个问题
答案 0 :(得分:2)
你遗失了什么
@Entity
public class Login extends Model {
并检查ebean.default="models.*"
application.conf
行