java - Hibernate org.hibernate.MappingException ...关联..未映射的类- Manytomany

Question

我已经使用 netbeans 自动生成代码来创建 Hibernate 配置；所以我有两个像这样映射的表(多对多):

<hibernate-mapping auto-import="true">
<class name="com.antoiovi.jobprograms.entity.Roles" table="roles"   catalog="jobprograms">
    <id name="rolesName" type="string">
        <column name="roles_name" length="20" />
        <generator class="assigned" />
    </id>
    <set name="userses" table="users_roles" inverse="true" lazy="false" fetch="select" cascade="all">
        <key>
            <column name="role_name" length="20" not-null="true" />
        </key>
        <many-to-many entity-name="com.antoiovi.jobprograms.entity.Users">
            <column name="user_name" length="15" not-null="true" />
        </many-to-many>
    </set>
</class>

 <hibernate-mapping  auto-import="true">
<class name="com.antoiovi.jobprograms.entity.Users" table="users" catalog="jobprograms">
    <id name="idusers" type="java.lang.Integer">
        <column name="idusers" />
        <generator class="identity" />
    </id>
    <property name="userName" type="string">
        <column name="user_name" length="15" not-null="true" unique="true" />
    </property>
    <property name="userPass" type="string">
        <column name="user_pass" length="15" not-null="true" />
    </property>
    <property name="firstName" type="string">
        <column name="first_name" length="20" />
    </property>
    <property name="lastName" type="string">
        <column name="last_name" length="25" />
    </property>
    <set name="roleses" table="users_roles" inverse="true" lazy="false" fetch="select" cascade="all">
        <key>
            <column name="user_name" length="15" not-null="true" />
        </key>
        <many-to-many entity-name="com.antoiovi.jobprograms.entity.Roles">
            <column name="role_name" length="20" not-null="true" />
        </many-to-many>
    </set>
    <set name="jobprograms" table="jobprogram" inverse="true" lazy="false" fetch="select" cascade="all">
        <key>
            <column name="users_idusers" not-null="true" />
        </key>
        <one-to-many class="com.antoiovi.jobprograms.entity.Jobprogram" />
    </set>
</class>

我做了一些修改，如你在上面看到的(auto-import=true，lazy=false)，因为我有错误消息

rg.hibernate.MappingException: An association from the table users_roles refers to an unmapped class: com.antoiovi.jobprograms.entity.Roles
at org.hibernate.cfg.Configuration.secondPassCompileForeignKeys(Configuration.java:1824)
at org.hibernate.cfg.Configuration.originalSecondPassCompile(Configuration.java:1756)
at org.hibernate.cfg.Configuration.secondPassCompile(Configuration.java:1423)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1856)

配置文件是

<hibernate-configuration>

org.hibernate.dialect.MySQL方言 com.mysql.jdbc.驱动程序 jdbc:mysql://localhost:3306/jobprograms?zeroDateTimeBehavior=convertToNull jobprograms_ad xxxxx 线 真的 org.hibernate.hql.classic.ClassicQueryTranslatorFactory 真的 这些类有这样的引用:

'@ManyToMany(fetch=FetchType.LAZY, mappedBy="roleses")
public Set<Users> getUserses() {
    return this.userses;
} '

@ManyToMany(fetch=FetchType.EAGER) @JoinTable(name="users_roles", catalog="jobprograms", joinColumns = { @JoinColumn(name="user_name", nullable=false, updatable=false) }, inverseJoinColumns = { @JoinColumn(name="role_name", nullable=false, updatable=false) }) public Set<Roles> getRoleses() { return this.roleses; }

运行时出现错误 org.hibernate.exception.SQLGrammarException，实际上实体已加载，但 set<> 没有..， 测试错误时是 org.hibernate.MappingException:来自表 users_roles 的关联引用了未映射的类:com.antoiovi.jobprograms.entity.Roles，并且 HSQL 未执行。

我试图查看其他帖子，但找不到答案。谁能帮帮我？

在配置文件中，实体都已声明； 我认为问题在映射中:

e <set name="roleses" table="users_roles" inverse="false" lazy="true" fetch="select" >
        <key >
            <column name="user_name" length="15" not-null="true"  />
        </key>
        <many-to-many entity-name="test.Roles" property-ref="rolesName">
            <column name="role_name" length="20" not-null="true" />
        </many-to-many>
    </set>
    <set name="jobprograms" table="jobprogram" inverse="true" lazy="true" fetch="select">
        <key>
            <column name="users_idusers" not-null="true" />
        </key>
        <one-to-many class="test.Jobprogram" />
    </set>

和

enter  <class name="test.Roles" table="roles" catalog="jobprograms">
    <id name="rolesName" type="string">
        <column name="roles_name" length="20" />
        <generator class="assigned" />
    </id>
    <set name="userses" table="users_roles" inverse="true" lazy="true" fetch="select">
        <key property-ref="rolesName">
            <column name="role_name" length="20" not-null="true" />
        </key>
        <many-to-many entity-name="test.Users" property-ref="userName">
            <column name="user_name" length="15" not-null="true" />
        </many-to-many>
    </set>
</class>

....

Answer 1

这个错误 org.hibernate.MappingException:来自表 users_roles 的关联引用未映射的类:com.antoiovi.jobprograms.entity.Roles

当 hibernate 配置不知道实体(角色)映射时出现，要么你错过了将实体角色引入到 hibernate 配置，要么你没有使用正确的名称，请检查配置文件并包含 com.antoiovi.jobprograms.entity.Roles作为资源