hibernate - Spring boot + Hibernate

hibernate - Spring boot + Hibernate - 用户未映射

转载作者：行者123 更新时间：2023-12-03 12:28:16

我在 Google 上看到了很多与 hibernate 错误相关的主题:

org.hibernate.hql.internal.ast.QuerySyntaxException: User is not mapped [from <model_name>]; nested exception is java.lang.IllegalArgumentException: org.hibernate.hql.internal.ast.QuerySyntaxException: User is not mapped [from <model_name>]

但是，它们都没有帮助我在 Spring Boot 应用程序中解决这个问题。

这是我的项目结构:

看看我的文件:

DatabaseConfig.java:

package pl.test.config;

import java.util.Properties;

import javax.sql.DataSource;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.env.Environment;
import org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor;
import org.springframework.jdbc.datasource.DriverManagerDataSource;
import org.springframework.orm.jpa.JpaTransactionManager;
import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;
import org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter;
import org.springframework.transaction.annotation.EnableTransactionManagement;

/**
 * Contains database configurations.
 */
@Configuration
@EnableTransactionManagement
public class DatabaseConfig {



    // ------------------------
    // PRIVATE FIELDS
    // ------------------------

    @Autowired
    private Environment env;

    @Autowired
    private DataSource dataSource;

    @Autowired
    private LocalContainerEntityManagerFactoryBean entityManagerFactory;


    // ------------------------
    // PUBLIC METHODS
    // ------------------------

    /**
     * DataSource definition for database connection. Settings are read from
     * the application.properties file (using the env object).
     */
    @Bean
    public DataSource dataSource() {
        DriverManagerDataSource dataSource = new DriverManagerDataSource();
        dataSource.setDriverClassName(env.getProperty("spring.datasource.driver-class-name"));
        dataSource.setUrl(env.getProperty("spring.datasource.url"));
        dataSource.setUsername(env.getProperty("spring.datasource.username"));
        dataSource.setPassword(env.getProperty("spring.datasource.password"));
        return dataSource;
    }

    /**
     * Declare the JPA entity manager factory.
     */
    @Bean
    public LocalContainerEntityManagerFactoryBean entityManagerFactory() {
        LocalContainerEntityManagerFactoryBean entityManagerFactory =
                new LocalContainerEntityManagerFactoryBean();

        entityManagerFactory.setDataSource(dataSource);

        // Classpath scanning of @Component, @Service, etc annotated class
        entityManagerFactory.setPackagesToScan(
                env.getProperty("entitymanager.packagesToScan"));

        // Vendor adapter
        HibernateJpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
        entityManagerFactory.setJpaVendorAdapter(vendorAdapter);

        // Hibernate properties
        Properties additionalProperties = new Properties();
        additionalProperties.put(
                "hibernate.dialect",
                env.getProperty("spring.jpa.properties.hibernate.dialect"));
        additionalProperties.put(
                "hibernate.show_sql",
                env.getProperty("spring.jpa.show-sql"));
        additionalProperties.put(
                "hibernate.hbm2ddl.auto",
                env.getProperty("spring.jpa.hibernate.ddl-auto"));
        entityManagerFactory.setJpaProperties(additionalProperties);

        return entityManagerFactory;
    }

    /**
     * Declare the transaction manager.
     */
    @Bean
    public JpaTransactionManager transactionManager() {
        JpaTransactionManager transactionManager =
                new JpaTransactionManager();
        transactionManager.setEntityManagerFactory(
                entityManagerFactory.getObject());
        return transactionManager;
    }

    /**
     * PersistenceExceptionTranslationPostProcessor is a bean post processor
     * which adds an advisor to any bean annotated with Repository so that any
     * platform-specific exceptions are caught and then rethrown as one
     * Spring's unchecked data access exceptions (i.e. a subclass of
     * DataAccessException).
     */
    @Bean
    public PersistenceExceptionTranslationPostProcessor exceptionTranslation() {
        return new PersistenceExceptionTranslationPostProcessor();
    }
} // class DatabaseConfig

用户:

package pl.test.model;

import javax.persistence.*;
import javax.validation.constraints.NotNull;

@Entity
@Table(name = "users")
public class User {

    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private long id;

    @NotNull
    @Column(unique = true)
    private String username;

    @NotNull
    private String password;

    public User() { }

    public User(long id) {
        this.id = id;
    }

    public User(String username, String password) {
        this.username = username;
        this.password = password;

    }

    public long getId() {
        return id;
    }

    public void setId(long id) {
        this.id = id;
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }
}

UserDAO:

package pl.test.model.dao;

import java.util.List;

import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.transaction.Transactional;

import org.springframework.stereotype.Repository;
import pl.test.model.User;

@Repository
@Transactional
public class UserDAO {

    @PersistenceContext
    private EntityManager entityManager;

    public void create(User user) {
        entityManager.persist(user);
        return;
    }

    public void delete(User user) {
        if (entityManager.contains(user))
            entityManager.remove(user);
        else
            entityManager.remove(entityManager.merge(user));
        return;
    }

    @SuppressWarnings("unchecked")
    public List getAll() {
        return entityManager.createQuery("from User").getResultList();
    }

}

SampleWebJspApplication:

package pl.test.web;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.context.web.SpringBootServletInitializer;

@SpringBootApplication
public class SampleWebJspApplication extends SpringBootServletInitializer {

    @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
        return application.sources(SampleWebJspApplication.class);
    }

    public static void main(String[] args) throws Exception {
        SpringApplication.run(SampleWebJspApplication.class, args);
    }

}

欢迎 Controller :

package pl.test.web;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
import pl.test.model.dao.UserDAO;

import java.util.Date;
import java.util.Map;

/**
 * Created by zarebaa on 28/11/2015.
 */
@Controller
@ComponentScan(basePackages = "pl.test.model")
public class WelcomeController extends WebMvcConfigurerAdapter {

    @Autowired
    private UserDAO userDAO;

    @Value("${application.message:Hello World}")
    private String message = "Hello World";

    @RequestMapping("/")
    public String welcome(Map<String, Object> model) {
        userDAO.getAll();
        model.put("time", new Date());
        model.put("message", this.message);
        return "welcome";
    }
}

应用程序属性:

spring.mvc.view.prefix=/WEB-INF/jsp/
spring.mvc.view.suffix=.jsp
application.message=Hello Phil


spring.datasource.url=jdbc:h2:tcp://localhost/~/test
spring.datasource.username=sa
spring.datasource.password=
spring.datasource.driver-class-name=org.h2.Driver

spring.jpa.hibernate.ddl-auto=create-drop
spring.jpa.hibernate.naming_strategy=org.hibernate.cfg.ImprovedNamingStrategy
spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.H2Dialect
spring.jpa.database=h2
spring.jpa.show-sql=true

security.basic.enabled=false
security.user.password=password
logging.level.org.springframework.security=INFO
logging.level.org.springframework.boot.actuate.audit.listener.AuditListener=DEBUG

entitymanager.packagesToScan=pl.test.model

welcome.jsp:

测试

pom.xml 片段:

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>1.3.0.RELEASE</version>
</parent>

<properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <java.version>1.8</java.version>
    <bootstrap.version>3.3.5</bootstrap.version>
    <junit.version>4.12</junit.version>
</properties>

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-tomcat</artifactId>
        <scope>provided</scope>
    </dependency>
    <dependency>
        <groupId>org.apache.tomcat.embed</groupId>
        <artifactId>tomcat-embed-jasper</artifactId>
        <scope>provided</scope>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-jpa</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-security</artifactId>
    </dependency>
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>jstl</artifactId>
    </dependency>
    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-core</artifactId>
        <version>4.3.7.Final</version>
    </dependency>



    <dependency>
        <groupId>com.h2database</groupId>
        <artifactId>h2</artifactId>
        <version>1.4.190</version>
        <scope>runtime</scope>
    </dependency>

    <dependency>
        <groupId>org.webjars</groupId>
        <artifactId>bootstrap</artifactId>
        <version>3.2.0</version>
    </dependency>
    <dependency>
        <groupId>org.webjars</groupId>
        <artifactId>jquery</artifactId>
        <version>2.1.4</version>
    </dependency>

    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>${junit.version}</version>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
    </dependency>
</dependencies>

<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
        </plugin>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <configuration>
                <source>${java.version}</source>
                <target>${java.version}</target>
            </configuration>
        </plugin>
    </plugins>
</build>

我收到以下错误:

2015-11-29 17:28:50.862  INFO 9640 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : FrameworkServlet 'dispatcherServlet': initialization completed in 11 ms
2015-11-29 17:28:51.009 ERROR 9640 --- [nio-8080-exec-1] o.a.c.c.C.[.[.[/].[dispatcherServlet]    : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw e
xception [Request processing failed; nested exception is org.springframework.dao.InvalidDataAccessApiUsageException: org.hibernate.hql.internal.ast.QuerySyntaxException: User is not
 mapped [from User]; nested exception is java.lang.IllegalArgumentException: org.hibernate.hql.internal.ast.QuerySyntaxException: User is not mapped [from User]] with root cause

org.hibernate.hql.internal.ast.QuerySyntaxException: User is not mapped
        at org.hibernate.hql.internal.ast.util.SessionFactoryHelper.requireClassPersister(SessionFactoryHelper.java:189) ~[hibernate-core-4.3.7.Final.jar:4.3.7.Final]
        at org.hibernate.hql.internal.ast.tree.FromElementFactory.addFromElement(FromElementFactory.java:109) ~[hibernate-core-4.3.7.Final.jar:4.3.7.Final]
        at org.hibernate.hql.internal.ast.tree.FromClause.addFromElement(FromClause.java:95) ~[hibernate-core-4.3.7.Final.jar:4.3.7.Final]
        at org.hibernate.hql.internal.ast.HqlSqlWalker.createFromElement(HqlSqlWalker.java:332) ~[hibernate-core-4.3.7.Final.jar:4.3.7.Final]
        at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.fromElement(HqlSqlBaseWalker.java:3678) ~[hibernate-core-4.3.7.Final.jar:4.3.7.Final]
        at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.fromElementList(HqlSqlBaseWalker.java:3567) ~[hibernate-core-4.3.7.Final.jar:4.3.7.Final]
        at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.fromClause(HqlSqlBaseWalker.java:708) ~[hibernate-core-4.3.7.Final.jar:4.3.7.Final]
        at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.query(HqlSqlBaseWalker.java:564) ~[hibernate-core-4.3.7.Final.jar:4.3.7.Final]
        at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.selectStatement(HqlSqlBaseWalker.java:301) ~[hibernate-core-4.3.7.Final.jar:4.3.7.Final]
        at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.statement(HqlSqlBaseWalker.java:249) ~[hibernate-core-4.3.7.Final.jar:4.3.7.Final]
        at org.hibernate.hql.internal.ast.QueryTranslatorImpl.analyze(QueryTranslatorImpl.java:278) ~[hibernate-core-4.3.7.Final.jar:4.3.7.Final]
        at org.hibernate.hql.internal.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:206) ~[hibernate-core-4.3.7.Final.jar:4.3.7.Final]
        at org.hibernate.hql.internal.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:158) ~[hibernate-core-4.3.7.Final.jar:4.3.7.Final]
        at org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:131) ~[hibernate-core-4.3.7.Final.jar:4.3.7.Final]
        at org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:93) ~[hibernate-core-4.3.7.Final.jar:4.3.7.Final]
        at org.hibernate.engine.query.spi.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:167) ~[hibernate-core-4.3.7.Final.jar:4.3.7.Final]
        at org.hibernate.internal.AbstractSessionImpl.getHQLQueryPlan(AbstractSessionImpl.java:301) ~[hibernate-core-4.3.7.Final.jar:4.3.7.Final]
        at org.hibernate.internal.AbstractSessionImpl.createQuery(AbstractSessionImpl.java:236) ~[hibernate-core-4.3.7.Final.jar:4.3.7.Final]
        at org.hibernate.internal.SessionImpl.createQuery(SessionImpl.java:1800) ~[hibernate-core-4.3.7.Final.jar:4.3.7.Final]
        at org.hibernate.jpa.spi.AbstractEntityManagerImpl.createQuery(AbstractEntityManagerImpl.java:328) ~[hibernate-entitymanager-4.3.11.Final.jar:4.3.11.Final]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_65]
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_65]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_65]
        at java.lang.reflect.Method.invoke(Method.java:497) ~[na:1.8.0_65]
        at org.springframework.orm.jpa.ExtendedEntityManagerCreator$ExtendedEntityManagerInvocationHandler.invoke(ExtendedEntityManagerCreator.java:344) ~[spring-orm-4.2.3.RELEASE.j
ar:4.2.3.RELEASE]
        at com.sun.proxy.$Proxy86.createQuery(Unknown Source) ~[na:na]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_65]
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_65]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_65]
        at java.lang.reflect.Method.invoke(Method.java:497) ~[na:1.8.0_65]
        at org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:293) ~[spring-orm-4.2.3.RELEASE.jar:4.2
.3.RELEASE]
        at com.sun.proxy.$Proxy86.createQuery(Unknown Source) ~[na:na]
        at pl.test.model.dao.UserDAO.getAll(UserDAO.java:34) ~[classes/:na]
        at pl.test.model.dao.UserDAO$$FastClassBySpringCGLIB$$5e7d5fdc.invoke(<generated>) ~[classes/:na]
        at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204) ~[spring-core-4.2.3.RELEASE.jar:4.2.3.RELEASE]
        at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:718) ~[spring-aop-4.2.3.RELEASE.jar:4.2.3.RELEASE]
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157) ~[spring-aop-4.2.3.RELEASE.jar:4.2.3.RELEASE]
        at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:136) ~[spring-tx-4.2.3.RELEASE.jar:4.2.3
.RELEASE]
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.2.3.RELEASE.jar:4.2.3.RELEASE]
        at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99) ~[spring-tx-4.2.3.RELEASE.jar:4.2.3.RELEASE]
        at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:281) ~[spring-tx-4.2.3.RELEASE.jar:4.2.3.RELEAS
E]
        at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96) ~[spring-tx-4.2.3.RELEASE.jar:4.2.3.RELEASE]
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.2.3.RELEASE.jar:4.2.3.RELEASE]
        at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:654) ~[spring-aop-4.2.3.RELEASE.jar:4.2.3.RELEASE]
        at pl.test.model.dao.UserDAO$$EnhancerBySpringCGLIB$$5d5ea102.getAll(<generated>) ~[classes/:na]
        at pl.test.web.WelcomeController.welcome(WelcomeController.java:29) ~[classes/:na]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_65]
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_65]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_65]
        at java.lang.reflect.Method.invoke(Method.java:497) ~[na:1.8.0_65]
        at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:222) ~[spring-web-4.2.3.RELEASE.jar:4.2.3.RELEASE]
        at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:137) ~[spring-web-4.2.3.RELEASE.jar:4.2.3.RELEASE]
        at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110) ~[spring-webmvc-4.2.3.RELEASE.
jar:4.2.3.RELEASE]
        at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:814) ~[spring-webmvc-4.2.3.RELEAS
E.jar:4.2.3.RELEASE]
        at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:737) ~[spring-webmvc-4.2.3.RELEASE.jar
:4.2.3.RELEASE]
        at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85) ~[spring-webmvc-4.2.3.RELEASE.jar:4.2.3.RELEASE]
        at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:959) ~[spring-webmvc-4.2.3.RELEASE.jar:4.2.3.RELEASE]
        at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893) ~[spring-webmvc-4.2.3.RELEASE.jar:4.2.3.RELEASE]
        at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970) ~[spring-webmvc-4.2.3.RELEASE.jar:4.2.3.RELEASE]
        at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861) ~[spring-webmvc-4.2.3.RELEASE.jar:4.2.3.RELEASE]
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:622) ~[tomcat-embed-core-8.0.28.jar:8.0.28]
        at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846) ~[spring-webmvc-4.2.3.RELEASE.jar:4.2.3.RELEASE]
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:729) ~[tomcat-embed-core-8.0.28.jar:8.0.28]
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291) ~[tomcat-embed-core-8.0.28.jar:8.0.28]
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) ~[tomcat-embed-core-8.0.28.jar:8.0.28]
        at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) ~[tomcat-embed-websocket-8.0.28.jar:8.0.28]
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239) ~[tomcat-embed-core-8.0.28.jar:8.0.28]
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) ~[tomcat-embed-core-8.0.28.jar:8.0.28]
        at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:207) ~[spring-security-web-4.0.3.RELEASE.jar:4.0.3.RELEASE]
        at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:176) ~[spring-security-web-4.0.3.RELEASE.jar:4.0.3.RELEASE]
        at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346) ~[spring-web-4.2.3.RELEASE.jar:4.2.3.RELEASE]
        at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:262) ~[spring-web-4.2.3.RELEASE.jar:4.2.3.RELEASE]
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239) ~[tomcat-embed-core-8.0.28.jar:8.0.28]
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) ~[tomcat-embed-core-8.0.28.jar:8.0.28]
        at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99) ~[spring-web-4.2.3.RELEASE.jar:4.2.3.RELEASE]
        at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-4.2.3.RELEASE.jar:4.2.3.RELEASE]
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239) ~[tomcat-embed-core-8.0.28.jar:8.0.28]
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) ~[tomcat-embed-core-8.0.28.jar:8.0.28]
        at org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:87) ~[spring-web-4.2.3.RELEASE.jar:4.2.3.RELEASE]
        at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-4.2.3.RELEASE.jar:4.2.3.RELEASE]
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239) ~[tomcat-embed-core-8.0.28.jar:8.0.28]
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) ~[tomcat-embed-core-8.0.28.jar:8.0.28]
        at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:77) ~[spring-web-4.2.3.RELEASE.jar:4.2.3.RELEASE]
        at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-4.2.3.RELEASE.jar:4.2.3.RELEASE]
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239) ~[tomcat-embed-core-8.0.28.jar:8.0.28]
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) ~[tomcat-embed-core-8.0.28.jar:8.0.28]
        at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:121) ~[spring-web-4.2.3.RELEASE.jar:4.2.3.RELEASE]
        at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-4.2.3.RELEASE.jar:4.2.3.RELEASE]
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239) ~[tomcat-embed-core-8.0.28.jar:8.0.28]
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) ~[tomcat-embed-core-8.0.28.jar:8.0.28]
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:217) ~[tomcat-embed-core-8.0.28.jar:8.0.28]
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106) [tomcat-embed-core-8.0.28.jar:8.0.28]
        at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502) [tomcat-embed-core-8.0.28.jar:8.0.28]
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142) [tomcat-embed-core-8.0.28.jar:8.0.28]
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79) [tomcat-embed-core-8.0.28.jar:8.0.28]
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88) [tomcat-embed-core-8.0.28.jar:8.0.28]
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:518) [tomcat-embed-core-8.0.28.jar:8.0.28]
        at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1091) [tomcat-embed-core-8.0.28.jar:8.0.28]
        at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:673) [tomcat-embed-core-8.0.28.jar:8.0.28]
        at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1500) [tomcat-embed-core-8.0.28.jar:8.0.28]
        at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1456) [tomcat-embed-core-8.0.28.jar:8.0.28]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [na:1.8.0_65]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0_65]
        at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-8.0.28.jar:8.0.28]
        at java.lang.Thread.run(Thread.java:745) [na:1.8.0_65]

你明白我为什么以及如何解决这个问题吗？

最佳答案

把您的 SampleWebJspApplication.java在 pl.test打包并执行应用程序。

由 Spring Boot 推荐从根包运行你的应用程序，你的所有实体、 Controller 、DAO 和其他服务类都应该放在子包中。这不是硬性规定，但可以确保正确扫描所有带注释的子包类

在您的情况下，您的 User类未扫描且 Hibernate无法找到相同的映射并最终抛出 QuerySyntaxException执行 from User 时询问。

目前 Spring Boot 会扫描 @Entity类，如果它们放置在您指定 @SpringBootApplication 的相同包或子包中注解。至少，这是我最近在开发 Spring Boot 应用程序时观察到的。

如果不想移动SampleWebJspApplication.java的位置，然后使用 @EntityScan(basePackages = "pl.test.model")注释，这将解决问题。

Spring Boot 文档 - https://docs.spring.io/spring-boot/docs/current/reference/html/using-boot-structuring-your-code.html

关于hibernate - Spring boot + Hibernate - 用户未映射，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/33985306/

文章推荐： cgi - 什么是cgi编程

文章推荐： arrays - 将Perl数组排序到位

spring - spring boot、spring BOM、spring IO应该用哪一个？
我尝试阅读有关 Spring BOM、Spring Boot 和 Spring IO 的文档。但是没有说明，我们应该如何一起使用它们？在我的项目中，我们已经有了自己的 Parent POM ，所以
spring - 从与 Spring 同时加载的非 spring 组件访问 Spring 上下文
我正在开发的很酷的企业应用程序正在转向 Spring。这对所有团队来说都是非常酷和令人兴奋的练习，但也是一个巨大的压力源。我们所做的是逐渐将遗留组件移至 Spring 上下文。现在我们有一个 huuu
spring - spring 调度程序和 spring 批处理项目编写器的事务问题
我正在尝试使用 @Scheduled 运行 Spring 批处理作业注释如下: @Scheduled(cron = "* * * * * ?") public void launchMessageDi
spring - Spring 应用程序上下文和 Spring 容器有什么区别？
我对这两个概念有点困惑。阅读 Spring 文档，我发现，例如。 bean 工厂是 Spring 容器。我还读到“ApplicationContext 是 BeanFactory 的完整超集”。但两者
spring - 如何在不同的 Spring 上下文之间共享 Spring bean？
我们有一个使用 Spring BlazeDS 集成的应用程序。到目前为止，我们一直在使用 Spring 和 Flex，它运行良好。我们现在还需要添加一些 Spring MVC Controller 。
spring - 如何将自定义 Spring 模式类型与传统 Spring 模式类型混合和匹配？
假设我有一个类(class) Person带属性name和 age ，它可以像这样用 Spring 配置: 我想要一个自定义的 Spring 模式元素，这很容易做到，允许我在我的 Sp
spring - 如何在 Spring 或 Spring Boot 中以编程方式在 Spring Mongo 数据中创建复合索引？
如何在 Java 中以编程方式使用 Spring Data 创建 MongoDB 复合索引？使用 MongoTemplate 我可以创建一个这样的索引:mongoTemplate.indexOps(
spring-batch - spring 批处理流作业与 spring 组合任务
我想使用 spring-complex-task 执行我的应用程序，并且我已经构建了复杂的 spring-batch Flow Jobs，它执行得非常好。你能解释一下spring批处理流作业与spr
spring - 在非 spring 应用程序中使用 spring 应用程序作为库
我实现了 spring-boot 应用程序，现在我想将它用作非 spring 应用程序的库。如何初始化 lib 类，以便 Autowiring 的依赖项按预期工作？显然，如果我使用“new”创建类实
spring-boot - Spring 云安全与 Spring 安全
我刚开始学习 spring cloud security，我有一个基本问题。它与 Spring Security 有何不同？我们是否需要在 spring boot 上构建我们的应用程序才能使用 spr
spring - Spring 和 Spring Boot 的区别
有很多人建议我使用 Spring Boot 而不是 Spring 来开发 REST Web 服务。我想知道这两者到底有什么区别？最佳答案总之 Spring Boot 减少了编写大量配置和样板代码的
spring - Maven : Spring 4 + Spring Security
您能向我解释一下如何使用 Spring 正确构建 Web 应用程序吗？我知道 Spring 框架的最新版本是 4.0.0.RELEASE，但是 Spring Security 的最新版本是 3.2.0
spring - 打印所有加载的 Spring bean - Spring Boot
我如何才能知道作为 Spring Boot 应用程序的一部分加载的所有 bean 的名称？我想在 main 方法中有一些代码来打印服务器启动后加载的 bean 的详细信息。最佳答案如spring-
spring - 寻找正确的方法 : Spring Social + Spring RESTful API + Spring WebApp + Mobile Clients
我有一个使用 Spring 3.1 构建的 RESTful API，也使用 Spring Security。我有一个 Web 应用程序，也是一个 Spring 3.1 MVC 应用程序。我计划让移动客
spring - 哪个版本的 Spring AMQP 和 Spring Rabbit 与 Spring 5 兼容？
升级到 Spring 5 后，我在 Spring Rabbit 和 Spring AMQP 中遇到错误。两者现在都设置为 1.5.6.RELEASE 有谁知道哪些版本应该与 Spring 5 兼容？
Spring Framework、Spring Security - 可以在没有 Spring Framework 的情况下使用 Spring Security 吗？
我现在已经使用 Spring Framework 3.0.5 和 Spring Security 3.0.5 多次了。我知道Spring框架使用DI和AOP。我还知道 Spring Security
spring - 避免在单个 jar 中合并多个 spring 依赖项时覆盖 spring.handlers/spring.schemas 的想法
我收到错误 Unable to Location NamespaceHandler when using context:annotation-config running (java -jar) 由
spring-mvc - spring boot/spring web app内嵌版本号
在 Spring 应用程序中嵌入唯一版本号的策略是什么？我有一个使用 Spring Boot 和 Spring Web 的应用程序。它已经足够成熟，我想对其进行版本控制并在运行时看到它显示在屏幕上
spring - 当存在两个或多个具有相同名称的实体时选择默认实体 - Spring Boot、Spring Data JPA、
我正在使用 spring data jpa 进行持久化。如果存在多个具有相同名称的实体，是否有一种方法可以将一个实体标记为默认值。类似@Primary注解的东西用来解决多个bean的依赖问题 @Ent
spring - spring DAOSupport有什么优势
我阅读了 Spring 框架的 DAOSupport 类。但是我无法理解这些 DAOSuport 类的优点。在 DAOSupport 类中，我们调用 getXXXTemplate() 方法来获取特定的

行者123

个人简介

我是一名优秀的程序员,十分优秀！

作者热门文章

滴滴打车优惠券免费领取

全站热门文章

首页

博学

6Ren·AI

商城

hibernate - Spring boot + Hibernate - 用户未映射