什么原因导致“java.lang.IllegalArgumentException：无法设置java.lang.Integer字段” [英] What causes "java.lang.IllegalArgumentException: Can not set java.lang.Integer field"

问题描述

我无法解决这些 new 异常

 无法设置java.lang.Integer字段GcmRegistraionIdentity .gcmId到GcmRegistraionIdentity 
 
 org.hibernate.PropertyAccessException：无法通过反射获取字段值getcm of GcmRegistraionIdentity.gcmId 
  

我的动态Web项目（Jee7）定位于

  GlassFish Server开源版4.1 build 13）
  

Hibernate

  Hibernate Core {4.3.7.Final} 
  

My Persistence.xml

 < persistence version =2.1
 xmlns =http://xmlns.jcp.org/xml/ ns / persistencexmlns：xsi =http://www.w3.org/2001/XMLSchema-instance
 xsi：schemaLocation =http://xmlns.jcp.org/xml/ns/persistence http ：//www.oracle.com/webfolder/technetwork/jsc/xml/ns/persistence/persistence_2_1.xsd> 
< persistence-unit name =testPUtransaction-type =JTA> 
< provider> org.hibernate.jpa.HibernatePersistenceProvider< / provider> 
< jta-data-source> jdbc / testDB< / jta-data-source> 
<属性> 
< property name =hibernate.transaction.jta.platform
 value =org.hibernate.service.jta.platform.internal.SunOneJtaPlatform/> 
< property name =hibernate.dialectvalue =org.hibernate.dialect.MySQL5InnoDBDialect/> 
< property name =hibernate.show_sqlvalue =true/> 
< / properties> 
< / persistence-unit> 
< /余辉> 
  

继承我的 EDITED 实体类（部分：例如Getters / Setters 不显示）

  @Entity 
 @Table（name =gcm_registration）
 public class GcmRegistraionIdentity {
 
 @Id 
 @GeneratedValue（strategy = GenerationType.IDENTITY）
 @Column（name =gcm_id，unique = true，nullable = false，可插入= false，updatable = false）
 private Integer gcmId; 
 
 @Column（name =registration_id）
 private String registraionId = null; 
 
 @Column（name =created）
 @Temporal（TemporalType.TIMESTAMP）
 private创建日期; 
 
 public Integer getGcmId（）{
 return gcmId; 
} 
 
 public void setGcmId（final Integer gcmId）{
 this.gcmId = gcmId; 
} 
  

Mysql版本是

< pre $ 版本5.6.22 MySQL社区服务器（GPL）


我正在运行 Mac OS X 10.10.1（14B25）（Yosemite）

继承我的JAX-RS类

  @Path（registrations）
 @Stateless 
 public class RegistrationResource {
 
 @PersistenceContext 
私人EntityManager mEntityManager; 
 
 @POST 
 @Path（gcm）
 public void register（final RegistrationIdJson registrationId）{
 
 final GcmRegistraionIdentity gcmRegistraionIdentity = new GcmRegistraionIdentity（） ; 
 gcmRegistraionIdentity.setRegistraionId（registrationId.getRegistrationId（））; 
 
 mEntityManager.persist（gcmRegistraionIdentity）; 
 
} 
 
} 
  

继承人DDL为我的MySql表

  CREATE TABLE`gcm_registration`（
`gcm_id` int（11）NOT NULL AUTO_INCREMENT，
`registration_id` varchar（1024）NOT NULL，
`created` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP，
 PRIMARY KEY（`gcm_id`）
）ENGINE = InnoDB AUTO_INCREMENT = 2 DEFAULT CHARSET = UTF8; 
  

解决方案

解决方案是取代

  Hibernate Core {4.3.7.Final} 
  

与

  Hibernate Core {4.3.5.Final} 
  

不需要其他代码或配置更改

I cannot resolve these new exceptions

 Can not set java.lang.Integer field GcmRegistraionIdentity.gcmId to GcmRegistraionIdentity

org.hibernate.PropertyAccessException: could not get a field value by reflection getter of GcmRegistraionIdentity.gcmId

My Dynamic Web Project (Jee7) targeted to

GlassFish Server Open Source Edition  4.1  (build 13)

Hibernate

Hibernate Core {4.3.7.Final}

My Persistence.xml

<persistence version="2.1"
    xmlns="http://xmlns.jcp.org/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence http://www.oracle.com/webfolder/technetwork/jsc/xml/ns/persistence/persistence_2_1.xsd">
    <persistence-unit name="testPU" transaction-type="JTA">
        <provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
        <jta-data-source>jdbc/testDB</jta-data-source>
        <properties>
            <property name="hibernate.transaction.jta.platform"
                value="org.hibernate.service.jta.platform.internal.SunOneJtaPlatform" />
            <property name="hibernate.dialect" value="org.hibernate.dialect.MySQL5InnoDBDialect" />
            <property name="hibernate.show_sql" value="true" />
        </properties>
    </persistence-unit>
</persistence>

Heres my EDITED entity class (partial: e.g Getters/Setters NOT SHOWN)

@Entity
@Table(name = "gcm_registration")
public class GcmRegistraionIdentity {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Column(name = "gcm_id", unique = true, nullable = false, insertable = false, updatable = false)
    private Integer gcmId;

    @Column(name = "registration_id")
    private String registraionId = null;

    @Column(name = "created")
    @Temporal(TemporalType.TIMESTAMP)
    private Date created;

    public Integer getGcmId() {
        return gcmId;
    }

    public void setGcmId(final Integer gcmId) {
        this.gcmId = gcmId;
    }

Mysql version is

Version 5.6.22 MySQL Community Server (GPL)

I am running on Mac OS X 10.10.1 (14B25) (Yosemite)

Heres my JAX-RS class

@Path("registrations")
@Stateless
public class RegistrationResource {

    @PersistenceContext
    private EntityManager mEntityManager;

    @POST
    @Path("gcm")
    public void register(final RegistrationIdJson registrationId) {

        final GcmRegistraionIdentity gcmRegistraionIdentity = new GcmRegistraionIdentity();
        gcmRegistraionIdentity.setRegistraionId(registrationId.getRegistrationId());

        mEntityManager.persist(gcmRegistraionIdentity);

    }

}

Heres the DDL for my MySql table

CREATE TABLE `gcm_registration` (
  `gcm_id` int(11) NOT NULL AUTO_INCREMENT,
  `registration_id` varchar(1024) NOT NULL,
  `created` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP,
  PRIMARY KEY (`gcm_id`)
) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8;

解决方案

The solution was to replace

Hibernate Core {4.3.7.Final}

with

Hibernate Core {4.3.5.Final}

No other code or configuration changes were required

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