Question

由于某些原因，我的播放eclipse应用程序无法运行引导作业并抛出异常。似乎Model类User没有编译并存储在tmp / classes目录中。我不确定是什么错误使我的播放eclipse应用程序无法正确编译并在开发模式下生成类。非常感谢任何解决方案。

---- UPDATE -------

下面是models.User类。这个班似乎会引起问题。每次我改变这个类的源代码然后播放都无法编译并引发下面的错误。

---------- models.User.java -------------------------

package models;
    import java.util.ArrayList;
    import java.util.Arrays;
    import java.util.Date;
    import java.util.List;

    import javax.persistence.CascadeType;
    import javax.persistence.Entity;
    import javax.persistence.FetchType;
    import javax.persistence.ManyToOne;
    import javax.persistence.OneToMany;

    import controllers.Secure;
    import controllers.Secure.Security;

    import models.deadbolt.RoleHolder;
    import play.data.binding.As;
    import play.data.validation.CheckWith;
    import play.data.validation.Email;
    import play.data.validation.Equals;
    import play.data.validation.Match;
    import play.data.validation.MinSize;
    import play.data.validation.Password;
    import play.data.validation.Required;
    import play.db.jpa.Model;
    import play.libs.Codec;
    import play.mvc.Scope.RenderArgs;
    import util.UniqueObjectCheck;

    @Entity
    public class User extends Model implements RoleHolder {

        private static final long serialVersionUID = 1L;

        @Required
        public String firstname;
        @Required
        public String lastname;

        public String gender;

        @As("yyyy")
        public Date dob;

        @ManyToOne
        public Country country;

        @Required
        @MinSize(8)
        @Match("^[a-zA-Z0-9_]*$")
        @CheckWith(UniqueUserCheck.class)
        public String username;

        @Required
        @Equals("confirmPassword")
        @MinSize(8)
        @Password
        public String password;

        @Password
        public String confirmPassword;

        @Required
        @Email
        @Equals("confirmEmail")
        @CheckWith(UniqueEmailCheck.class)
        public String email;

        public String confirmEmail;

        public String passwordHash;

        public Boolean active;

        //@Required
        //@OneToMany (cascade=CascadeType.ALL)
        @ManyToOne (cascade=CascadeType.ALL)
        public UserRole role;


        /**
         * 
         */
        public User() {
            // init();
            //if(role == null)
                //role= new ArrayList<UserRole>();
        }

        public User(final String firstname, final String lastname,
                final String gendre, final Date yob, final Country country,
                final String username, final String password, final String email) {
            super();
            this.firstname = firstname;
            this.lastname = lastname;
            this.gender = gendre;
            dob = yob;
            this.country = country;
            this.username = username;
            this.password = password;
            this.email = email;

            init();

        }

        public User(final String firstname, final String lastname,
                final String gendre, final Date yob, final Country country,
                final String username, final String password,
                final String confirmPassword, final String email,
                final String confirmEmail) {
            super();
            this.firstname = firstname;
            this.lastname = lastname;
            this.gender = gendre;
            dob = yob;
            this.country = country;
            this.username = username;
            this.password = password;
            this.confirmPassword = confirmPassword;
            this.email = email;
            this.confirmEmail = confirmEmail;

            init();
        }

        public User(final String email, final String password) {

            if (email == null || email.isEmpty())
                throw new RuntimeException("User must have an email");
            if (password == null || email.isEmpty())
                throw new RuntimeException("User must have a password");
            this.email = email;
            // init();

        }

        private void init() {
            passwordHash = Codec.hexMD5(password);

            // BCrypt.hashpw(password, BCrypt.gensalt(saltFactor));

        }

        public void addRole(String name) {
            if(name == null || name.isEmpty())
                return;

            if(hasRole(name)){
                System.out.println( "user already has role: "+ name);
                return;

            }
            this.save();
            new UserRole(this,name).save();     
            this.save();
            System.out.println( "added user role: "+ name);

        }

        public void encodePassword(final String password) {

            passwordHash = Codec.hexMD5(password);
            // BCrypt.hashpw(password, BCrypt.gensalt(saltFactor));

        }

        public boolean checkPassword(final String plainTextPassword) {
            // BCrypt.checkpw(plainTextPassword, passwordHash);
            //System.out.println(Codec.hexMD5(plainTextPassword));
            return Codec.hexMD5(plainTextPassword).equals(passwordHash);

        }

        public static User getUserByEmail(final String email) {
            return User.find("byEmail", email).first();
        }

        public static User getByUserName(String userName) {
            return find("byUserName", userName).first();
        }

        public List<? extends models.deadbolt.Role> getRoles() {

            List<UserRole> roles=UserRole.find("byUser", this).fetch();
            System.out.println("getRoles="+roles);
            return roles;
        }

        public boolean hasRole(final String name) {
            this.save();
            UserRole userRole=UserRole.getByName(name);
            List<UserRole> roles=UserRole.find("byUser", this).fetch();
            //System.out.print("userRole=");
            //System.out.println(userRole);
            return (roles.contains(userRole));


        }

        class UniqueEmailCheck extends UniqueObjectCheck<User> {
            @Override
            protected List loadExistingUniqueObjects(final User user) {
                setMessage("validation.emailUsed", user.email);
                return User.find("byEmail", user.email).fetch();

            }
        }

        class UniqueUserCheck extends UniqueObjectCheck<User> {
            @Override
            protected List loadExistingUniqueObjects(final User user) {
                setMessage("validation.used", user.username);
                return User.find("byUsername", user.username).fetch();
            }
        }

        public String toString() {
            return this.username;
        }

    }

------ models.UserRole.java -------------------------

package models;

import javax.persistence.Entity;
import javax.persistence.ManyToOne;

import models.deadbolt.Role;
import play.data.validation.Required;
import play.db.jpa.Model;

/**
 * 
 */
@Entity
public class UserRole extends Model implements Role {
    @Required
    public String name;
    @ManyToOne
    public User user;

    public UserRole(User user,String name) {
        this.user=user;
        this.name = name;
    }

    public String getRoleName() {
        return name;
    }

    public static UserRole getByName(String name) {
        return UserRole.find("byName", name).first();
    }

    @Override
    public String toString() {
        return this.name;
    }
}

----------------错误异常--------------------

    Oops: UnexpectedException
An unexpected error occured caused by exception UnexpectedException: While applying class play.classloading.enhancers.PropertiesEnhancer on Bootstrap

play.exceptions.UnexpectedException: While applying play.CorePlugin@496614e7 on Bootstrap
    at play.plugins.PluginCollection.enhance(PluginCollection.java:511)
    at play.classloading.ApplicationClasses$ApplicationClass.enhance(ApplicationClasses.java:235)
    at play.classloading.ApplicationClassloader.loadApplicationClass(ApplicationClassloader.java:165)
    at play.classloading.ApplicationClassloader.loadClass(ApplicationClassloader.java:84)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
    at play.classloading.ApplicationClasses.getAssignableClasses(ApplicationClasses.java:67)
    at play.classloading.ApplicationClassloader.getAssignableClasses(ApplicationClassloader.java:455)
    at play.classloading.ApplicationClassloader$getAssignableClasses.call(Unknown Source)
    at {module:crud}/app/views/tags/crud/types.tag.(line:3)
    at play.templates.GroovyTemplate.internalRender(GroovyTemplate.java:232)
    at play.templates.GroovyTemplate$ExecutableTemplate.invokeTag(GroovyTemplate.java:379)
    at {module:crud}/conf/routes.(line:4)
    at play.templates.GroovyTemplate.internalRender(GroovyTemplate.java:232)
    at play.templates.Template.render(Template.java:26)
    at play.templates.GroovyTemplate.render(GroovyTemplate.java:187)
    at play.mvc.Router.parse(Router.java:162)
    at play.mvc.Router.parse(Router.java:190)
    at play.mvc.Router.parse(Router.java:164)
    at play.mvc.Router.load(Router.java:48)
    at play.mvc.Router.detectChanges(Router.java:219)
    at Invocation.HTTP Request(Play!)
Caused by: play.exceptions.UnexpectedException: While applying class play.classloading.enhancers.PropertiesEnhancer on Bootstrap
    at play.CorePlugin.enhance(CorePlugin.java:302)
    at play.plugins.PluginCollection.enhance(PluginCollection.java:506)
    at play.classloading.ApplicationClasses$ApplicationClass.enhance(ApplicationClasses.java:235)
    at play.classloading.ApplicationClassloader.loadApplicationClass(ApplicationClassloader.java:165)
    at play.classloading.ApplicationClassloader.loadClass(ApplicationClassloader.java:84)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
    at play.classloading.ApplicationClasses.getAssignableClasses(ApplicationClasses.java:67)
    at play.classloading.ApplicationClassloader.getAssignableClasses(ApplicationClassloader.java:455)
    at play.classloading.ApplicationClassloader$getAssignableClasses.call(Unknown Source)
    at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:40)
    at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:116)
    at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:124)
    at Template_1001$_run_closure1.doCall(types.tag:6)
    at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:90)
    at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:233)
    at org.codehaus.groovy.runtime.metaclass.ClosureMetaClass.invokeMethod(ClosureMetaClass.java:273)
    at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:886)
    at org.codehaus.groovy.runtime.callsite.PogoMetaClassSite.callCurrent(PogoMetaClassSite.java:66)
    at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCallCurrent(CallSiteArray.java:44)
    at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:141)
    at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:149)
    at Template_1001$_run_closure1.doCall(types.tag)
    at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:90)
    at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:233)
    at org.codehaus.groovy.runtime.metaclass.ClosureMetaClass.invokeMethod(ClosureMetaClass.java:273)
    at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:886)
    at groovy.lang.Closure.call(Closure.java:282)
    at groovy.lang.Closure.call(Closure.java:277)
    at org.codehaus.groovy.runtime.GroovyCategorySupport$ThreadCategoryInfo.use(GroovyCategorySupport.java:99)
    at org.codehaus.groovy.runtime.GroovyCategorySupport$ThreadCategoryInfo.access$300(GroovyCategorySupport.java:61)
    at org.codehaus.groovy.runtime.GroovyCategorySupport.use(GroovyCategorySupport.java:239)
    at org.codehaus.groovy.runtime.DefaultGroovyMethods.use(DefaultGroovyMethods.java:333)
    at org.codehaus.groovy.runtime.dgm$723.invoke(Unknown Source)
    at org.codehaus.groovy.runtime.callsite.PogoMetaMethodSite$PogoMetaMethodSiteNoUnwrapNoCoerce.invoke(PogoMetaMethodSite.java:307)
    at org.codehaus.groovy.runtime.callsite.PogoMetaMethodSite.callCurrent(PogoMetaMethodSite.java:51)
    at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCallCurrent(CallSiteArray.java:44)
    at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:141)
    at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:153)
    at Template_1001.run(types.tag:2)
    at play.templates.GroovyTemplate.internalRender(GroovyTemplate.java:232)
    at play.templates.GroovyTemplate$ExecutableTemplate.invokeTag(GroovyTemplate.java:379)
    at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:90)
    at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:233)
    at org.codehaus.groovy.runtime.metaclass.ClosureMetaClass.invokeMethod(ClosureMetaClass.java:362)
    at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:886)
    at org.codehaus.groovy.runtime.callsite.PogoMetaClassSite.callCurrent(PogoMetaClassSite.java:66)
    at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCallCurrent(CallSiteArray.java:44)
    at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:141)
    at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:161)
    at Template_1000$_run_closure1.doCall(routes:41)
    at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:90)
    at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:233)
    at org.codehaus.groovy.runtime.metaclass.ClosureMetaClass.invokeMethod(ClosureMetaClass.java:273)
    at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:886)
    at org.codehaus.groovy.runtime.callsite.PogoMetaClassSite.callCurrent(PogoMetaClassSite.java:66)
    at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCallCurrent(CallSiteArray.java:44)
    at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:141)
    at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:149)
    at Template_1000$_run_closure1.doCall(routes)
    at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:90)
    at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:233)
    at org.codehaus.groovy.runtime.metaclass.ClosureMetaClass.invokeMethod(ClosureMetaClass.java:273)
    at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:886)
    at groovy.lang.Closure.call(Closure.java:282)
    at groovy.lang.Closure.call(Closure.java:277)
    at org.codehaus.groovy.runtime.GroovyCategorySupport$ThreadCategoryInfo.use(GroovyCategorySupport.java:99)
    at org.codehaus.groovy.runtime.GroovyCategorySupport$ThreadCategoryInfo.access$300(GroovyCategorySupport.java:61)
    at org.codehaus.groovy.runtime.GroovyCategorySupport.use(GroovyCategorySupport.java:239)
    at org.codehaus.groovy.runtime.DefaultGroovyMethods.use(DefaultGroovyMethods.java:333)
    at org.codehaus.groovy.runtime.dgm$723.invoke(Unknown Source)
    at org.codehaus.groovy.runtime.callsite.PogoMetaMethodSite$PogoMetaMethodSiteNoUnwrapNoCoerce.invoke(PogoMetaMethodSite.java:307)
    at org.codehaus.groovy.runtime.callsite.PogoMetaMethodSite.callCurrent(PogoMetaMethodSite.java:51)
    at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCallCurrent(CallSiteArray.java:44)
    at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:141)
    at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:153)
    at Template_1000.run(routes:2)
    ... 9 more
Caused by: play.exceptions.UnexpectedException: Error in PropertiesEnhancer
    at play.classloading.enhancers.PropertiesEnhancer$1.edit(PropertiesEnhancer.java:175)
    at javassist.expr.ExprEditor.loopBody(ExprEditor.java:197)
    at javassist.expr.ExprEditor.doit(ExprEditor.java:90)
    at javassist.CtBehavior.instrument(CtBehavior.java:618)
    at play.classloading.enhancers.PropertiesEnhancer.enhanceThisClass(PropertiesEnhancer.java:133)
    at play.CorePlugin.enhance(CorePlugin.java:297)
    ... 84 more
Caused by: java.lang.RuntimeException: Trying to visit uncompiled class while enhancing. Uncompiled class: models.User
    at play.classloading.enhancers.Enhancer$ApplicationClassesClasspath.openClassfile(Enhancer.java:75)
    at javassist.ClassPoolTail.openClassfile(ClassPoolTail.java:335)
    at javassist.ClassPool.openClassfile(ClassPool.java:594)
    at javassist.CtClassType.getClassFile2(CtClassType.java:185)
    at javassist.CtClassType.makeFieldCache(CtClassType.java:760)
    at javassist.CtClassType.getMembers(CtClassType.java:751)
    at javassist.CtClassType.getDeclaredField2(CtClassType.java:873)
    at javassist.CtClassType.getField2(CtClassType.java:828)
    at javassist.CtClassType.getField(CtClassType.java:820)
    at javassist.expr.FieldAccess.getField(FieldAccess.java:113)
    at play.classloading.enhancers.PropertiesEnhancer$1.edit(PropertiesEnhancer.java:140)
    ... 89 more

Answer 1

看起来您的代码无法编译，并且您尝试以prod模式启动。在项目中运行播放eclipsify 并在eclipse中重新导入解决任何可能的编译错误还要确保应用程序在application.conf中以dev模式 application.mode = dev 启动

Answer 2

似乎我终于找到了导致我的游戏应用程序如此脆弱并且随机出错的原因：

我正在将注册流程实施为“游戏模块”。我使用了书籍"playframework cook book"中的注册模块（此模块的源代码包含在此答案下面）

使用此注册模块似乎使得游戏不稳定可能因为它与其他播放模块（如crud模块）冲突。所以解决方案我删除了上述注册模块的依赖。并改为在播放控制器操作中重新实现注册过程。在这之后，我注意到应用程序再次稳定，我不再得到这些地狱般的错误。

为什么上面的书中描述的注册模块使得游戏变得如此脆弱和不稳定？此注册模块的src代码仅使用两个模型类User.java和Registration.java。也许b / c用户模型在某种程度上与crud模块有关，这使得播放经常混乱和不稳定？当我将上述注册模块添加到我的依赖项时，我仍然无法理解使游戏变得不稳定的真正机制。

但无论如何，解决方案似乎完全删除了这个自定义模块。

import play.Logger;
import play.Play;
import play.PlayPlugin;
import play.classloading.ApplicationClasses.ApplicationClass;

public class RegistrationPlugin extends PlayPlugin {
    private static boolean pluginActive = false;
    private static RegistrationService service;

    public void onApplicationStart() {
        ApplicationClass registrationService = Play.classes
                .getAssignableClasses(RegistrationService.class).get(0);
        if (registrationService == null) {
            Logger.error("Registration plugin disabled. No class implements RegistrationService interface");
        } else {
            try {
                service = (RegistrationService) registrationService.javaClass
                        .newInstance();
                pluginActive = true;
            } catch (Exception e) {
                Logger.error(e,
                        "Registration plugin disabled. Error when creating new instance");
            }
        }
    }

    public void onEvent(String message, Object context) {
        boolean eventMatched = "JPASupport.objectPersisted".equals(message);
        if (pluginActive && eventMatched && service.isAllowedToExecute(context)) {
            service.createRegistration(context);
            service.triggerEmail(context);
        }
    }

    public static void confirm(Object uuid) {
        if (pluginActive) {
            service.confirm(uuid);
        }
    }
}

 public interface RegistrationService {
        public void createRegistration(Object context);

        public void triggerEmail(Object context);

        public boolean isAllowedToExecute(Object context);

        public void confirm(Object context);

}

package service;


public class RegistrationServiceImpl implements RegistrationService {
    @Override
    public void createRegistration(Object context) {
        if (context instanceof User) {
            System.out.println("createRegistration() called");
            User user = (User) context;
            RegistrationSession r = new RegistrationSession();
            r.uuid = UUID.randomUUID().toString().replaceAll("-", "");
            r.user = user;
            r.save();
            // System.out.println(RegistrationSession.findAll());
        }
    }

    @Override
    public void triggerEmail(Object context) {
        if (context instanceof User) {
            System.out.println("triggerEmail() called");
            User user = (User) context;
            RegistrationSession signUp = RegistrationSession.find("byUser",
                    user).first();

            MailNotifier.confirmation(signUp);
        }
    }

    @Override
    public boolean isAllowedToExecute(Object context) {
        if (context instanceof User) {
            System.out.println("isAllowedToExecute() called");
            User user = (User) context;
            return !user.active;

        }
        return false;
    }

    @Override
    public void confirm(Object context) {
        if (context != null) {
            System.out.println("confirm() called");
            User user = null;
            final String email = Params.current().get("email");
            final String status = Params.current().get("status");

             /** System.out.print("status="); System.out.println(status);
             * System.out.println(context.toString());
             * System.out.print("Registration="); System.out.println(r);
             */
            RegistrationSession r = RegistrationSession.find("byUuid",
                    context.toString()).first();

            if (email == null || email.isEmpty() || status == null
                    || status.isEmpty()) {

                RenderArgs.current().put("activationFail",
                        "registration.activationFail");

            } else if (r == null && User.getUserByEmail(email) == null) {
                RenderArgs.current().put("activationFail",
                        "registration.activationFail");

            } else if (r == null && User.getUserByEmail(email) != null
                    && User.getUserByEmail(email).active) {
                RenderArgs.current().put("alreadyRegistered",
                        "registration.alreadyRegistered");

            }

            else if (r != null) {
                user = r.user;

                if (User.getUserByEmail(email) != null && !user.active
                        && status.equals("pending")) {
                    RenderArgs.current().put("pending", "registration.pending");
                    RenderArgs.current().put("email", user.email);

                } else if (User.getUserByEmail(email) != null && !user.active
                        && status.equals("confirm")) {
                    user.active = true;
                    user.save();
                    RenderArgs.current()
                            .put("verified", "registration.success");
                    // delete registration session object
                    r.delete();

                } else {
                    if (user != null && user.active) {

                        RenderArgs.current().put("alreadyRegistered",
                                "registration.alreadyRegistered");

                    } // todo : when should we make this confirm invalid?!

                    else if (user == null) {

                        RenderArgs.current().put("activationFail",
                                "registration.activationFail");

                    }
                }

            }

        }
    }
}

Answer 3

升级到1.2.3后（从1.2.2开始）我遇到了同样的错误。为了解决这个问题，我做了：

Eclipsify
将项目导入eclipse
更正了一条错误消息“Secure.Security类型中的connected（）方法不可见。” （一开始我没有错误）

然后一切都对我很好......

playframework增强时的未编译类

3 个答案:

}