Java Hibernate显示错误，未映射类
我创建了一个DAO类、实体和所有Hibernate配置，但Hibernate始终显示相同的错误： QuerySyntaxException:未映射StudentEntity[从StudentEntity s中选择s] 我的错在哪里 表脚本Java Hibernate显示错误，未映射类,java,mysql,hibernate,Java,Mysql,Hibernate,我创建了一个DAO类、实体和所有Hibernate配置，但Hibernate始终显示相同的错误： QuerySyntaxException:未映射StudentEntity[从StudentEntity s中选择s] 我的错在哪里 表脚本 CREATE TABLE student( id int(3) NOT NULL, firstName varchar(20) NOT NULL, age int(2) NOT NULL, CONSTRAINT id_pk PRIMARY KE
CREATE TABLE student(
id int(3) NOT NULL,
firstName varchar(20) NOT NULL,
age int(2) NOT NULL,
CONSTRAINT id_pk PRIMARY KEY (id)
);
INSERT INTO student VALUES ('101','yashik','23');
SELECT * FROM student;
package com.demo.entity;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.Table;
@Entity
@Table(name="student")
public class StudentEntity {
@Id
private int id;
private String firstName;
private int age;
//getter and setter
package com.demo.dao;
import java.util.List;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.query.Query;
import com.demo.entity.StudentEntity;
import com.demo.resources.HibernateUtility;
public class StudentDAOImpl implements StudentDAO {
@Override
public StudentEntity getStudent(Integer studentID) {
SessionFactory sessionFactory=HibernateUtility.createSessionFactory();
Session s1=null;
StudentEntity stu=null;
s1=sessionFactory.openSession();
s1.beginTransaction();
String st1="SELECT s FROM StudentEntity s";
Query q1=s1.createQuery(st1);
List<StudentEntity> l1=q1.list();
stu.setAge(l1.get(0).getAge());
stu.setId(l1.get(0).getId());
stu.setFirstName(l1.get(0).getFirstName());
if (s1 != null) {
s1.close();
}
return stu;
}
}
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-configuration SYSTEM "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="hibernate.connection.url">jdbc:mysql://localhost:3306/rmc</property>
<property name="hibernate.connection.username">root</property>
<property name="hibernate.connection.password">******</property>
<property name="show_sql">true</property>
<property name="connection.pool_size">1</property>
<mapping class="com.demo.entity.StudentEntity"></mapping>
</session-factory>
</hibernate-configuration>
org.hibernate.dialogue.mysqldialogue
com.mysql.jdbc.Driver
jdbc：mysql://localhost:3306/rmc
根
******
真的
1.
Jul 06, 2016 10:06:18 PM org.hibernate.Version logVersion
INFO: HHH000412: Hibernate Core {5.2.0.Final}
Jul 06, 2016 10:06:18 PM org.hibernate.cfg.Environment <clinit>
INFO: HHH000206: hibernate.properties not found
Jul 06, 2016 10:06:18 PM org.hibernate.cfg.Environment buildBytecodeProvider
INFO: HHH000021: Bytecode provider name : javassist
Jul 06, 2016 10:06:19 PM org.hibernate.annotations.common.reflection.java.JavaReflectionManager <clinit>
INFO: HCANN000001: Hibernate Commons Annotations {5.0.1.Final}
Jul 06, 2016 10:06:19 PM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure
WARN: HHH10001002: Using Hibernate built-in connection pool (not for production use!)
Jul 06, 2016 10:06:19 PM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl buildCreator
INFO: HHH10001005: using driver [com.mysql.jdbc.Driver] at URL [jdbc:mysql://localhost:3306/rmc]
Jul 06, 2016 10:06:19 PM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl buildCreator
INFO: HHH10001001: Connection properties: {user=root, password=****}
Jul 06, 2016 10:06:19 PM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl buildCreator
INFO: HHH10001003: Autocommit mode: false
Jul 06, 2016 10:06:19 PM org.hibernate.engine.jdbc.connections.internal.PooledConnections <init>
INFO: HHH000115: Hibernate connection pool size: 1 (min=1)
Wed Jul 06 22:06:19 IST 2016 WARN: Establishing SSL connection without server's identity verification is not recommended. According to MySQL 5.5.45+, 5.6.26+ and 5.7.6+ requirements SSL connection must be established by default if explicit option isn't set. For compliance with existing applications not using SSL the verifyServerCertificate property is set to 'false'. You need either to explicitly disable SSL by setting useSSL=false, or set useSSL=true and provide truststore for server certificate verification.
Jul 06, 2016 10:06:19 PM org.hibernate.dialect.Dialect <init>
INFO: HHH000400: Using dialect: org.hibernate.dialect.MySQLDialect
Jul 06, 2016 10:06:19 PM org.hibernate.hql.internal.QueryTranslatorFactoryInitiator initiateService
INFO: HHH000397: Using ASTQueryTranslatorFactory
Exception in thread "main" java.lang.IllegalArgumentException: org.hibernate.hql.internal.ast.QuerySyntaxException: StudentEntity is not mapped [SELECT s FROM StudentEntity s]
at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:131)
at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:155)
at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:162)
at org.hibernate.internal.AbstractSharedSessionContract.createQuery(AbstractSharedSessionContract.java:633)
at org.hibernate.internal.AbstractSharedSessionContract.createQuery(AbstractSharedSessionContract.java:101)
at com.demo.dao.StudentDAOImpl.getStudent(StudentDAOImpl.java:22)
at com.demo.userInterface.UserInterface.main(UserInterface.java:9)
Caused by: org.hibernate.hql.internal.ast.QuerySyntaxException: StudentEntity is not mapped [SELECT s FROM StudentEntity s]
at org.hibernate.hql.internal.ast.QuerySyntaxException.generateQueryException(QuerySyntaxException.java:79)
at org.hibernate.QueryException.wrapWithQueryString(QueryException.java:103)
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:218)
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:142)
at org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:115)
at org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:77)
at org.hibernate.engine.query.spi.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:152)
at org.hibernate.internal.AbstractSharedSessionContract.getQueryPlan(AbstractSharedSessionContract.java:523)
at org.hibernate.internal.AbstractSharedSessionContract.createQuery(AbstractSharedSessionContract.java:625)
... 3 more
Caused by: org.hibernate.hql.internal.ast.QuerySyntaxException: StudentEntity is not mapped
at org.hibernate.hql.internal.ast.util.SessionFactoryHelper.requireClassPersister(SessionFactoryHelper.java:171)
at org.hibernate.hql.internal.ast.tree.FromElementFactory.addFromElement(FromElementFactory.java:91)
at org.hibernate.hql.internal.ast.tree.FromClause.addFromElement(FromClause.java:79)
at org.hibernate.hql.internal.ast.HqlSqlWalker.createFromElement(HqlSqlWalker.java:321)
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.fromElement(HqlSqlBaseWalker.java:3704)
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.fromElementList(HqlSqlBaseWalker.java:3593)
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.fromClause(HqlSqlBaseWalker.java:718)
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.query(HqlSqlBaseWalker.java:574)
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.selectStatement(HqlSqlBaseWalker.java:311)
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.statement(HqlSqlBaseWalker.java:259)
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.analyze(QueryTranslatorImpl.java:262)
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:190)
... 9 more
2016年7月6日10:06:18 PM org.hibernate.Version日志版本
信息：hh000412:Hibernate核心{5.2.0.Final}
2016年7月6日晚上10:06:18 org.hibernate.cfg.Environment
信息：HH000206:找不到hibernate.properties
2016年7月6日晚上10:06:18 org.hibernate.cfg.Environment buildBytecodeProvider
信息：HH000021:字节码提供程序名称：javassist
2016年7月6日晚上10:06:19 org.hibernate.annotations.common.reflection.java.JavaReflectionManager
信息：HCANN000001:Hibernate Commons注释{5.0.1.Final}
2016年7月6日10:06:19 PM org.hibernate.engine.jdbc.connections.internal.driverManager连接提供MPL配置
警告：HHH10001002:使用Hibernate内置连接池（不用于生产！）
2016年7月6日10:06:19 PM org.hibernate.engine.jdbc.connections.internal.driverManager连接提供者MPL buildCreator
信息：HHH10001005:在URL[jdbc:mysql://localhost:3306/rmc]
2016年7月6日10:06:19 PM org.hibernate.engine.jdbc.connections.internal.driverManager连接提供者MPL buildCreator
信息：HHH10001001:连接属性：{user=root，password=***}
2016年7月6日10:06:19 PM org.hibernate.engine.jdbc.connections.internal.driverManager连接提供者MPL buildCreator
信息：HHH10001003:自动提交模式：错误
2016年7月6日10:06:19 PM org.hibernate.engine.jdbc.connections.internal.PooledConnections
信息：HH000115:休眠连接池大小：1（最小值=1）
Wed Jul 06 22:06:19 IST 2016警告：不建议在没有服务器身份验证的情况下建立SSL连接。根据MySQL 5.5.45+、5.6.26+和5.7.6+的要求，如果未设置explicit选项，默认情况下必须建立SSL连接。为了符合不使用SSL的现有应用程序，verifyServerCertificate属性设置为“false”。您需要通过设置useSSL=false显式禁用SSL，或者设置useSSL=true并为服务器证书验证提供信任库。
2016年7月6日晚上10:06:19 org.hibernate.dialogue.dialogue
信息：HH000400:使用方言：org.hibernate.dialogue.mysqldialogue
2016年7月6日10:06:19 PM org.hibernate.hql.internal.QueryTranslatorFactoryInitiator启动服务
信息：HH000397:使用ASTQueryTranslatorFactory
线程“main”java.lang.IllegalArgumentException中的异常：org.hibernate.hql.internal.ast.QuerySyntaxException:未映射StudentEntity[从StudentEntity s中选择s]
位于org.hibernate.internal.ExceptionConverterImpl.convert（ExceptionConverterImpl.java:131）
位于org.hibernate.internal.ExceptionConverterImpl.convert（ExceptionConverterImpl.java:155）
位于org.hibernate.internal.ExceptionConverterImpl.convert（ExceptionConverterImpl.java:162）
位于org.hibernate.internal.AbstractSharedSessionContract.createQuery（AbstractSharedSessionContract.java:633）
位于org.hibernate.internal.AbstractSharedSessionContract.createQuery（AbstractSharedSessionContract.java:101）
位于com.demo.dao.StudentDAOImpl.getStudent（StudentDAOImpl.java:22）
位于com.demo.userInterface.userInterface.main（userInterface.java:9）
原因：org.hibernate.hql.internal.ast.QuerySyntaxException:未映射StudentEntity[从StudentEntity s中选择s]
位于org.hibernate.hql.internal.ast.QuerySyntaxException.generateQueryException（QuerySyntaxException.java:79）
位于org.hibernate.QueryException.wrapWithQueryString（QueryException.java:103）
位于org.hibernate.hql.internal.ast.QueryTranslatorImpl.docomFile（QueryTranslatorImpl.java:218）
位于org.hibernate.hql.internal.ast.QueryTranslatorImpl.compile（QueryTranslatorImpl.java:142）
在org.hibernate.engine.query.spi.HQLQueryPlan.（HQLQueryPlan.java:115）
在org.hibernate.engine.query.spi.HQLQueryPlan.（HQLQueryPlan.java:77）
位于org.hibernate.engine.query.spi.QueryPlanCache.getHQLQueryPlan（QueryPlanCache.java:152）
位于org.hibernate.internal.AbstractSharedSessionContract.getQueryPlan（AbstractSharedSessionContract.java:523）
位于org.hibernate.internal.AbstractSharedSessionContract.createQuery（AbstractSharedSessionContract.java:625）
... 3个以上
原因：org.hibernate.hql.internal.ast.QuerySyntaxException:未映射StudentEntity
位于org.hibernate.hql.internal.ast.util.SessionFactoryHelper.requireClassPersister（SessionFactoryHelper.java:171）
位于org.hibernate.hql.internal.ast.tree.FromElementFactory.addFromElement（FromElementFactory.java:91）
位于org.hibernate.hql.internal.ast.tree.FromClause.addFromElement（FromClause.java:79）
位于org.hibernate.hql.internal.ast.HqlSqlWalker.createFromElement（HqlSqlWalker.java:321）
位于org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.fromElement（HqlSqlBaseWalker.java:3704）
位于org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.fromElementList（HqlSqlBaseWalker.java:3593）
位于org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.fromClause（HqlSqlBaseWalker.java:718）
位于org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.query（HqlSqlBaseWalker.java:574）
位于org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.selectStatement（HqlSqlBaseWalker.java:311）
位于org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.statement（HqlSqlBaseWalker.java:259）
位于org.hibernate.hql.internal.ast.QueryTranslatorImpl.analyze（QueryTranslatorImpl.java:262）
位于org.hibernate.hql.internal.ast.QueryTranslatorImpl.docomFile（QueryTranslatorImpl.java:190）
... 9更多
Jul 06, 2016 10:06:18 PM org.hibernate.Version logVersion
INFO: HHH000412: Hibernate Core {5.2.0.Final}
Jul 06, 2016 10:06:18 PM org.hibernate.cfg.Environment <clinit>
INFO: HHH000206: hibernate.properties not found
Jul 06, 2016 10:06:18 PM org.hibernate.cfg.Environment buildBytecodeProvider
INFO: HHH000021: Bytecode provider name : javassist
Jul 06, 2016 10:06:19 PM org.hibernate.annotations.common.reflection.java.JavaReflectionManager <clinit>
INFO: HCANN000001: Hibernate Commons Annotations {5.0.1.Final}
Jul 06, 2016 10:06:19 PM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure
WARN: HHH10001002: Using Hibernate built-in connection pool (not for production use!)
Jul 06, 2016 10:06:19 PM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl buildCreator
INFO: HHH10001005: using driver [com.mysql.jdbc.Driver] at URL [jdbc:mysql://localhost:3306/rmc]
Jul 06, 2016 10:06:19 PM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl buildCreator
INFO: HHH10001001: Connection properties: {user=root, password=****}
Jul 06, 2016 10:06:19 PM org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl buildCreator
INFO: HHH10001003: Autocommit mode: false
Jul 06, 2016 10:06:19 PM org.hibernate.engine.jdbc.connections.internal.PooledConnections <init>
INFO: HHH000115: Hibernate connection pool size: 1 (min=1)
Wed Jul 06 22:06:19 IST 2016 WARN: Establishing SSL connection without server's identity verification is not recommended. According to MySQL 5.5.45+, 5.6.26+ and 5.7.6+ requirements SSL connection must be established by default if explicit option isn't set. For compliance with existing applications not using SSL the verifyServerCertificate property is set to 'false'. You need either to explicitly disable SSL by setting useSSL=false, or set useSSL=true and provide truststore for server certificate verification.
Jul 06, 2016 10:06:19 PM org.hibernate.dialect.Dialect <init>
INFO: HHH000400: Using dialect: org.hibernate.dialect.MySQLDialect
Jul 06, 2016 10:06:19 PM org.hibernate.hql.internal.QueryTranslatorFactoryInitiator initiateService
INFO: HHH000397: Using ASTQueryTranslatorFactory
Exception in thread "main" java.lang.IllegalArgumentException: org.hibernate.hql.internal.ast.QuerySyntaxException: StudentEntity is not mapped [SELECT s FROM StudentEntity s]
at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:131)
at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:155)
at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:162)
at org.hibernate.internal.AbstractSharedSessionContract.createQuery(AbstractSharedSessionContract.java:633)
at org.hibernate.internal.AbstractSharedSessionContract.createQuery(AbstractSharedSessionContract.java:101)
at com.demo.dao.StudentDAOImpl.getStudent(StudentDAOImpl.java:22)
at com.demo.userInterface.UserInterface.main(UserInterface.java:9)
Caused by: org.hibernate.hql.internal.ast.QuerySyntaxException: StudentEntity is not mapped [SELECT s FROM StudentEntity s]
at org.hibernate.hql.internal.ast.QuerySyntaxException.generateQueryException(QuerySyntaxException.java:79)
at org.hibernate.QueryException.wrapWithQueryString(QueryException.java:103)
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:218)
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:142)
at org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:115)
at org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:77)
at org.hibernate.engine.query.spi.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:152)
at org.hibernate.internal.AbstractSharedSessionContract.getQueryPlan(AbstractSharedSessionContract.java:523)
at org.hibernate.internal.AbstractSharedSessionContract.createQuery(AbstractSharedSessionContract.java:625)
... 3 more
Caused by: org.hibernate.hql.internal.ast.QuerySyntaxException: StudentEntity is not mapped
at org.hibernate.hql.internal.ast.util.SessionFactoryHelper.requireClassPersister(SessionFactoryHelper.java:171)
at org.hibernate.hql.internal.ast.tree.FromElementFactory.addFromElement(FromElementFactory.java:91)
at org.hibernate.hql.internal.ast.tree.FromClause.addFromElement(FromClause.java:79)
at org.hibernate.hql.internal.ast.HqlSqlWalker.createFromElement(HqlSqlWalker.java:321)
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.fromElement(HqlSqlBaseWalker.java:3704)
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.fromElementList(HqlSqlBaseWalker.java:3593)
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.fromClause(HqlSqlBaseWalker.java:718)
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.query(HqlSqlBaseWalker.java:574)
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.selectStatement(HqlSqlBaseWalker.java:311)
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.statement(HqlSqlBaseWalker.java:259)
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.analyze(QueryTranslatorImpl.java:262)
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:190)
... 9 more