在项目中使用hibernate,使用注解方式操作pojo如下package com.leeyas.common.model;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import static javax.persistence.GenerationType.SEQUENCE;
import javax.persistence.Id;
import javax.persistence.SequenceGenerator;
import javax.persistence.Table;/**
* Address generated by Tools.Don't edit.
*/
@Entity
@Table(name = "address")
public class Address implements java.io.Serializable {
private static final long serialVersionUID = 1L; /** Id */
private Integer id;
private String name;
/** 地址 */
private String address; public Address() {
} /**
* Id
*/
@SequenceGenerator(name = "generator", allocationSize = 1, sequenceName = "seq_address")
@Id
@GeneratedValue(strategy = SEQUENCE, generator = "generator")
@Column(name = "id")
public Integer getId() {
return this.id;
} public void setId(Integer id) {
this.id = id;
} @Column(name = "name")
public String getName() {
return this.name;
} public void setName(String name) {
this.name = name;
} /**
* 地址
*/ @Column(name = "address")
public String getAddress() {
return this.address;
} public void setAddress(String address) {
this.address = address;
}}写一个main方法测试。package com.leeyas.common.serviceImpl;import java.util.List;import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.Transaction;import com.leeyas.common.util.hibernateUtil;public class testImpl { public static void main(String args[]){
hibernateUtil hbutil = new hibernateUtil();
Session session = hbutil.getSessionFactory().getCurrentSession();
Transaction tx = session.beginTransaction();
System.out.println("111111111111111");
tx.begin();
String hql = "from Address";
System.out.println("222222222222222");
Query qurey = session.createQuery(hql);
System.out.println("3333333333333333");
List users = qurey.list();
tx.commit();
System.out.println("----> " + users.size());
}
}
能打出“1111”和“222”,但是打不出“333”,错误信息如下111111111111111
222222222222222
Exception in thread "main" org.hibernate.hql.ast.QuerySyntaxException: Address is not mapped [from Address]
at org.hibernate.hql.ast.util.SessionFactoryHelper.requireClassPersister(SessionFactoryHelper.java:181)
at org.hibernate.hql.ast.tree.FromElementFactory.addFromElement(FromElementFactory.java:110)
at org.hibernate.hql.ast.tree.FromClause.addFromElement(FromClause.java:94)
at org.hibernate.hql.ast.HqlSqlWalker.createFromElement(HqlSqlWalker.java:316)
at org.hibernate.hql.antlr.HqlSqlBaseWalker.fromElement(HqlSqlBaseWalker.java:3228)
at org.hibernate.hql.antlr.HqlSqlBaseWalker.fromElementList(HqlSqlBaseWalker.java:3112)
at org.hibernate.hql.antlr.HqlSqlBaseWalker.fromClause(HqlSqlBaseWalker.java:720)
at org.hibernate.hql.antlr.HqlSqlBaseWalker.query(HqlSqlBaseWalker.java:571)
at org.hibernate.hql.antlr.HqlSqlBaseWalker.selectStatement(HqlSqlBaseWalker.java:288)
at org.hibernate.hql.antlr.HqlSqlBaseWalker.statement(HqlSqlBaseWalker.java:231)
at org.hibernate.hql.ast.QueryTranslatorImpl.analyze(QueryTranslatorImpl.java:254)
at org.hibernate.hql.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:185)
at org.hibernate.hql.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:136)
at org.hibernate.engine.query.HQLQueryPlan.<init>(HQLQueryPlan.java:101)
at org.hibernate.engine.query.HQLQueryPlan.<init>(HQLQueryPlan.java:80)
at org.hibernate.engine.query.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:94)
at org.hibernate.impl.AbstractSessionImpl.getHQLQueryPlan(AbstractSessionImpl.java:156)
at org.hibernate.impl.AbstractSessionImpl.createQuery(AbstractSessionImpl.java:135)
at org.hibernate.impl.SessionImpl.createQuery(SessionImpl.java:1651)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.hibernate.context.ThreadLocalSessionContext$TransactionProtectionWrapper.invoke(ThreadLocalSessionContext.java:342)
at $Proxy0.createQuery(Unknown Source)
at com.leeyas.common.serviceImpl.testImpl.main(testImpl.java:21)我新手,希望高手指教。。
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import static javax.persistence.GenerationType.SEQUENCE;
import javax.persistence.Id;
import javax.persistence.SequenceGenerator;
import javax.persistence.Table;/**
* Address generated by Tools.Don't edit.
*/
@Entity
@Table(name = "address")
public class Address implements java.io.Serializable {
private static final long serialVersionUID = 1L; /** Id */
private Integer id;
private String name;
/** 地址 */
private String address; public Address() {
} /**
* Id
*/
@SequenceGenerator(name = "generator", allocationSize = 1, sequenceName = "seq_address")
@Id
@GeneratedValue(strategy = SEQUENCE, generator = "generator")
@Column(name = "id")
public Integer getId() {
return this.id;
} public void setId(Integer id) {
this.id = id;
} @Column(name = "name")
public String getName() {
return this.name;
} public void setName(String name) {
this.name = name;
} /**
* 地址
*/ @Column(name = "address")
public String getAddress() {
return this.address;
} public void setAddress(String address) {
this.address = address;
}}写一个main方法测试。package com.leeyas.common.serviceImpl;import java.util.List;import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.Transaction;import com.leeyas.common.util.hibernateUtil;public class testImpl { public static void main(String args[]){
hibernateUtil hbutil = new hibernateUtil();
Session session = hbutil.getSessionFactory().getCurrentSession();
Transaction tx = session.beginTransaction();
System.out.println("111111111111111");
tx.begin();
String hql = "from Address";
System.out.println("222222222222222");
Query qurey = session.createQuery(hql);
System.out.println("3333333333333333");
List users = qurey.list();
tx.commit();
System.out.println("----> " + users.size());
}
}
能打出“1111”和“222”,但是打不出“333”,错误信息如下111111111111111
222222222222222
Exception in thread "main" org.hibernate.hql.ast.QuerySyntaxException: Address is not mapped [from Address]
at org.hibernate.hql.ast.util.SessionFactoryHelper.requireClassPersister(SessionFactoryHelper.java:181)
at org.hibernate.hql.ast.tree.FromElementFactory.addFromElement(FromElementFactory.java:110)
at org.hibernate.hql.ast.tree.FromClause.addFromElement(FromClause.java:94)
at org.hibernate.hql.ast.HqlSqlWalker.createFromElement(HqlSqlWalker.java:316)
at org.hibernate.hql.antlr.HqlSqlBaseWalker.fromElement(HqlSqlBaseWalker.java:3228)
at org.hibernate.hql.antlr.HqlSqlBaseWalker.fromElementList(HqlSqlBaseWalker.java:3112)
at org.hibernate.hql.antlr.HqlSqlBaseWalker.fromClause(HqlSqlBaseWalker.java:720)
at org.hibernate.hql.antlr.HqlSqlBaseWalker.query(HqlSqlBaseWalker.java:571)
at org.hibernate.hql.antlr.HqlSqlBaseWalker.selectStatement(HqlSqlBaseWalker.java:288)
at org.hibernate.hql.antlr.HqlSqlBaseWalker.statement(HqlSqlBaseWalker.java:231)
at org.hibernate.hql.ast.QueryTranslatorImpl.analyze(QueryTranslatorImpl.java:254)
at org.hibernate.hql.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:185)
at org.hibernate.hql.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:136)
at org.hibernate.engine.query.HQLQueryPlan.<init>(HQLQueryPlan.java:101)
at org.hibernate.engine.query.HQLQueryPlan.<init>(HQLQueryPlan.java:80)
at org.hibernate.engine.query.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:94)
at org.hibernate.impl.AbstractSessionImpl.getHQLQueryPlan(AbstractSessionImpl.java:156)
at org.hibernate.impl.AbstractSessionImpl.createQuery(AbstractSessionImpl.java:135)
at org.hibernate.impl.SessionImpl.createQuery(SessionImpl.java:1651)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.hibernate.context.ThreadLocalSessionContext$TransactionProtectionWrapper.invoke(ThreadLocalSessionContext.java:342)
at $Proxy0.createQuery(Unknown Source)
at com.leeyas.common.serviceImpl.testImpl.main(testImpl.java:21)我新手,希望高手指教。。
tx.begin();
String hql = "from User";
System.out.println("222222222222222");111111111111111
222222222222222
Exception in thread "main" org.hibernate.hql.ast.QuerySyntaxException: User is not mapped [from User]
你试下“select * from Address”?