java - maria db 和 hibernate 排序规则的非法混合-6ren

java - maria db 和 hibernate 排序规则的非法混合

转载作者：行者123 更新时间：2023-11-30 07:43:58

我在将一些字符插入 Maria DB 时遇到问题。我正在使用 maria db 连接器 1.3.2 版本。还建议我是否不应插入这些字符或任何将它们转换为 utf 8 字符的选项

hibernate 属性:

jdbc.url=jdbc\:mariadb\://localhost\:3306/twitter?useUnicode=true&amp;characterEncoding=utf-8
hibernate.dialect = org.hibernate.dialect.MySQL5InnoDBDialect
jdbc.username= root
jdbc.password = 
hibernate.bytecode.use_reflection_optimizer = false
hibernate.show_sql = true
hibernate.validator.apply_to_ddl = false
hibernate.connection.CharSet=utf8
hibernate.connection.characterEncoding=utf8
hibernate.connection.useUnicode = true

以下是日志:

org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.hibernate.exception.GenericJDBCException: could not extract ResultSet
    org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:982)
    org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:872)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
    org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
    org.hibernate.exception.GenericJDBCException: could not extract ResultSet
    org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:54)
    org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:126)
    org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:112)
    org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:91)
    org.hibernate.loader.Loader.getResultSet(Loader.java:2066)
    org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1863)
    org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1839)
    org.hibernate.loader.Loader.doQuery(Loader.java:910)
    org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:355)
    org.hibernate.loader.Loader.doList(Loader.java:2554)
    org.hibernate.loader.Loader.doList(Loader.java:2540)
    org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2370)
    org.hibernate.loader.Loader.list(Loader.java:2365)
    org.hibernate.loader.criteria.CriteriaLoader.list(CriteriaLoader.java:126)
    org.hibernate.internal.SessionImpl.list(SessionImpl.java:1718)
    org.hibernate.internal.CriteriaImpl.list(CriteriaImpl.java:380)
    com.infoarmor.twitter.service.dao.impl.RulesDAOImpl.findByStreamAndValueOrTag(RulesDAOImpl.java:69)
    sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    java.lang.reflect.Method.invoke(Method.java:497)
    org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:302)
    org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190)
    org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
    org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99)
    org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:281)
    org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)
    org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
    org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:208)
    com.sun.proxy.$Proxy33.findByStreamAndValueOrTag(Unknown Source)
    com.infoarmor.twitter.service.service.impl.RulesServiceImpl.findByStreamAndValueOrTag(RulesServiceImpl.java:50)
    com.infoarmor.rules.operations.RulesOperations.addRuleToInfoarmorSchema(RulesOperations.java:98)
    com.infoarmor.rules.operations.RulesOperations.addRule(RulesOperations.java:51)
    com.infoarmor.v1.controller.RulesController.add(RulesController.java:91)
    sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    java.lang.reflect.Method.invoke(Method.java:497)
    org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:222)
    org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:137)
    org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110)
    org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:814)
    org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:737)
    org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
    org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:959)
    org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)
    org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
    org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:872)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
    org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
    java.sql.BatchUpdateException: Illegal mix of collations (latin1_swedish_ci,IMPLICIT) and (utf8_general_ci,COERCIBLE) for operation '='
    org.mariadb.jdbc.MariaDbServerPreparedStatement.execute(MariaDbServerPreparedStatement.java:376)
    org.mariadb.jdbc.MariaDbServerPreparedStatement.executeQuery(MariaDbServerPreparedStatement.java:343)
    com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.executeQuery(NewProxyPreparedStatement.java:76)
    org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:82)
    org.hibernate.loader.Loader.getResultSet(Loader.java:2066)
    org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1863)
    org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1839)
    org.hibernate.loader.Loader.doQuery(Loader.java:910)
    org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:355)
    org.hibernate.loader.Loader.doList(Loader.java:2554)
    org.hibernate.loader.Loader.doList(Loader.java:2540)
    org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2370)
    org.hibernate.loader.Loader.list(Loader.java:2365)
    org.hibernate.loader.criteria.CriteriaLoader.list(CriteriaLoader.java:126)
    org.hibernate.internal.SessionImpl.list(SessionImpl.java:1718)
    org.hibernate.internal.CriteriaImpl.list(CriteriaImpl.java:380)
    com.infoarmor.twitter.service.dao.impl.RulesDAOImpl.findByStreamAndValueOrTag(RulesDAOImpl.java:69)
    sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    java.lang.reflect.Method.invoke(Method.java:497)
    org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:302)
    org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190)
    org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
    org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99)
    org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:281)
    org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)
    org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
    org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:208)
    com.sun.proxy.$Proxy33.findByStreamAndValueOrTag(Unknown Source)
    com.infoarmor.twitter.service.service.impl.RulesServiceImpl.findByStreamAndValueOrTag(RulesServiceImpl.java:50)
    com.infoarmor.rules.operations.RulesOperations.addRuleToInfoarmorSchema(RulesOperations.java:98)
    com.infoarmor.rules.operations.RulesOperations.addRule(RulesOperations.java:51)
    com.infoarmor.v1.controller.RulesController.add(RulesController.java:91)
    sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    java.lang.reflect.Method.invoke(Method.java:497)
    org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:222)
    org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:137)
    org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110)
    org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:814)
    org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:737)
    org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
    org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:959)
    org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)
    org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
    org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:872)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
    org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
    java.sql.SQLException: Illegal mix of collations (latin1_swedish_ci,IMPLICIT) and (utf8_general_ci,COERCIBLE) for operation '='
    org.mariadb.jdbc.internal.util.ExceptionMapper.get(ExceptionMapper.java:136)
    org.mariadb.jdbc.internal.util.ExceptionMapper.throwException(ExceptionMapper.java:69)
    org.mariadb.jdbc.MariaDbServerPreparedStatement.executeQueryEpilog(MariaDbServerPreparedStatement.java:338)
    org.mariadb.jdbc.MariaDbServerPreparedStatement.executeInternal(MariaDbServerPreparedStatement.java:293)
    org.mariadb.jdbc.MariaDbServerPreparedStatement.execute(MariaDbServerPreparedStatement.java:371)
    org.mariadb.jdbc.MariaDbServerPreparedStatement.executeQuery(MariaDbServerPreparedStatement.java:343)
    com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.executeQuery(NewProxyPreparedStatement.java:76)
    org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:82)
    org.hibernate.loader.Loader.getResultSet(Loader.java:2066)
    org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1863)
    org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1839)
    org.hibernate.loader.Loader.doQuery(Loader.java:910)
    org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:355)
    org.hibernate.loader.Loader.doList(Loader.java:2554)
    org.hibernate.loader.Loader.doList(Loader.java:2540)
    org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2370)
    org.hibernate.loader.Loader.list(Loader.java:2365)
    org.hibernate.loader.criteria.CriteriaLoader.list(CriteriaLoader.java:126)
    org.hibernate.internal.SessionImpl.list(SessionImpl.java:1718)
    org.hibernate.internal.CriteriaImpl.list(CriteriaImpl.java:380)
    com.infoarmor.twitter.service.dao.impl.RulesDAOImpl.findByStreamAndValueOrTag(RulesDAOImpl.java:69)
    sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    java.lang.reflect.Method.invoke(Method.java:497)
    org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:302)
    org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190)
    org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
    org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99)
    org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:281)
    org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)
    org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
    org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:208)
    com.sun.proxy.$Proxy33.findByStreamAndValueOrTag(Unknown Source)
    com.infoarmor.twitter.service.service.impl.RulesServiceImpl.findByStreamAndValueOrTag(RulesServiceImpl.java:50)
    com.infoarmor.rules.operations.RulesOperations.addRuleToInfoarmorSchema(RulesOperations.java:98)
    com.infoarmor.rules.operations.RulesOperations.addRule(RulesOperations.java:51)
    com.infoarmor.v1.controller.RulesController.add(RulesController.java:91)
    sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    java.lang.reflect.Method.invoke(Method.java:497)
    org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:222)
    org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:137)
    org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110)
    org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:814)
    org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:737)
    org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
    org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:959)
    org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)
    org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
    org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:872)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
    org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
    org.mariadb.jdbc.internal.util.dao.QueryException: Illegal mix of collations (latin1_swedish_ci,IMPLICIT) and (utf8_general_ci,COERCIBLE) for operation '='
    org.mariadb.jdbc.internal.protocol.AbstractQueryProtocol.getResult(AbstractQueryProtocol.java:478)
    org.mariadb.jdbc.internal.protocol.AbstractQueryProtocol.executePreparedQuery(AbstractQueryProtocol.java:591)
    org.mariadb.jdbc.MariaDbServerPreparedStatement.executeInternal(MariaDbServerPreparedStatement.java:281)
    org.mariadb.jdbc.MariaDbServerPreparedStatement.execute(MariaDbServerPreparedStatement.java:371)
    org.mariadb.jdbc.MariaDbServerPreparedStatement.executeQuery(MariaDbServerPreparedStatement.java:343)
    com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.executeQuery(NewProxyPreparedStatement.java:76)
    org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:82)
    org.hibernate.loader.Loader.getResultSet(Loader.java:2066)
    org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1863)
    org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1839)
    org.hibernate.loader.Loader.doQuery(Loader.java:910)
    org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:355)
    org.hibernate.loader.Loader.doList(Loader.java:2554)
    org.hibernate.loader.Loader.doList(Loader.java:2540)
    org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2370)
    org.hibernate.loader.Loader.list(Loader.java:2365)
    org.hibernate.loader.criteria.CriteriaLoader.list(CriteriaLoader.java:126)
    org.hibernate.internal.SessionImpl.list(SessionImpl.java:1718)
    org.hibernate.internal.CriteriaImpl.list(CriteriaImpl.java:380)
    com.infoarmor.twitter.service.dao.impl.RulesDAOImpl.findByStreamAndValueOrTag(RulesDAOImpl.java:69)
    sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    java.lang.reflect.Method.invoke(Method.java:497)
    org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:302)
    org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190)
    org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
    org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99)
    org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:281)
    org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)
    org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
    org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:208)
    com.sun.proxy.$Proxy33.findByStreamAndValueOrTag(Unknown Source)
    com.infoarmor.twitter.service.service.impl.RulesServiceImpl.findByStreamAndValueOrTag(RulesServiceImpl.java:50)
    com.infoarmor.rules.operations.RulesOperations.addRuleToInfoarmorSchema(RulesOperations.java:98)
    com.infoarmor.rules.operations.RulesOperations.addRule(RulesOperations.java:51)
    com.infoarmor.v1.controller.RulesController.add(RulesController.java:91)
    sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    java.lang.reflect.Method.invoke(Method.java:497)
    org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:222)
    org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:137)
    org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110)
    org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:814)
    org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:737)
    org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
    org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:959)
    org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)
    org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
    org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:872)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
    org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:728)

最佳答案

我通过提及 utf8_general_ci 创建了表，但它是用 latin1_swedish_ci 创建的。更改表格解决了问题。非常感谢。

更改排序规则脚本:alter table table_name 转换为字符集utf8 collate utf8_general_ci;

关于java - maria db 和 hibernate 排序规则的非法混合，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/34200954/

文章推荐： java - 无法实现 Activity 场景

文章推荐： java - SOAP 网络服务端点发布

文章推荐： JavaFX 应用程序卡住，我不知道为什么

hibernate - 什么是 hibernate 和n- hibernate ？
什么是 hibernate 和n- hibernate ？我可以在 Visual Studio 2008 中使用它进行 C# Web 应用程序开发吗？请给我建议...我是 asp.net Web 应用
hibernate - grails/hibernate:在作业中获取org.hibernate.StaleStateException
我有一个不系统地发生的异常(exception)。我试图通过在每次迭代中刷新和清理 session 来解决此问题，但没有成功。 [quartzScheduler_Worker-7] ERROR jd
hibernate - hibernate 实体中IP地址的最佳类型？
使用 Hibernate 在数据库中存储 IP 地址的最佳类型是什么？我虽然是 Byte[] 或 String，但有没有更好的方法，或者你用什么？ @Column(name = "range_fr
hibernate - Hibernate @Formula中TRIM函数的参数数量错误
我正在尝试制定一个公式来选择用户个人资料的用户友好名称。它选择名字 + ' ' + 姓氏如果其中至少有一个不为空且不为空(包含非空白字符)，否则选择短名称 (条件相同)，最后，如果短名称为空或
hibernate - 鉴别器列映射为实体 Hibernate
在hibernate中，是否可以将鉴别器作为一个实体？例如，如果我将 Department 作为基类，将 AdminDepartment 和 ProcessingDepartment 作为子类。 De
hibernate - hibernate 投影列表
我只想从表中获取一些列值。因此，我已经使用投影来实现这一目标。该代码有效，但我认为它无效。我的问题是当我使用ProjectionsList并将标准条件列表设置为ArrayList时-Bulletin
hibernate - hibernate 缓存保存了什么？
你好: 我对 hibernate 缓存缓存的内容感到困惑。从文档中，我知道 hibernate 中有缓存类型。一级 :交易级别。似乎要被 session 持久化的实体被缓存在这里。二级缓存 :
hibernate - 数据库触发器和 hibernate
我遇到了一个情况: save或update hibernate 的目标表中的某些数据在目标表上有一个触发器，该触发器将在目标表的insert或update操作之前执行由 hibernate 将此记
hibernate - Hibernate JPA缓存
我有一个名为 Master_Info_tbl 的表。它是一个查询表: 这是该表的代码: @Entity @Table(name="MASTER_INFO_T") public class Code
hibernate - Hibernate 中的日期字面量
我想知道如何在 Hibernate 查询语言中使用日期文字。我在我的 JPA 项目中做了如下操作(作为 Eclipselink 提供者)并且它工作正常。 SELECT m FROM Me m WHER
hibernate - Hibernate 中的关系所有者是什么意思？
@Entity public class Troop { @OneToMany(mappedBy="troop") public Set getSoldiers() { ...
hibernate - 查询以删除表中的所有行 hibernate
我正在尝试使用 hibernate 查询删除表 'user_role' 中的所有行。但每次我都会出错。有人可以帮我吗。 DaoImpl @Override public void deleteAll(
hibernate - OSGi + hibernate
不是将数据库操作分散在四个 (osgi) 包中，而是在那里做略有不同的事情。我想创建一个负责所有持久性问题的(简单的)OSGi 包。我觉得这并不像听起来那么简单，因为“每个包都有独特的类加载器”。因
hibernate - hibernate 生成器如何增量句柄删除
这就是我使用生成器的方式: private Integer id; 我看到的行为是: 创建第一个对象 hibernate 分配 id = 1 删除该对象关闭服务
hibernate - hibernate 中的实体和值类型
对象级别的实体和值类型有什么区别。我知道实体将有一个 id 但值不会，但为什么我们需要不同的方法来映射实体与值类型？这样做是为了让hibernate可以对值类型应用任何优化吗？最佳答案一个实体已
hibernate - Hibernate 连接表的标准
我正在使用 HibernateTemplate.findByCriteria 方法进行一些查询。现在我想在标准上创建一些 SQL 限制，比如 criteria.add(Restrictions.sql
hibernate - 从表中全选 hibernate
所以我有以下代码: Query query = session.createQuery("from Weather"); List list = query.list();
hibernate - 查看与 hibernate
如何使用Hibernate映射具有多个实体的 View ？问候，混沌最佳答案请参见Hibernate文档中第5.1.3节“类”，紧接在“Id”节之前: There is no differen
hibernate - 为什么需要传统的 Hibernate？
据我所知，Hibernate 有两种类型的实现 JPA的实现(2)(@Entity，@Table注解) 扩展到旧的(传统的) hibernate (没有 JPA)，使用 HSQL 查询，没有注释如果
hibernate - Hibernate 中的多图
我需要一个将条目存储为键值对的集合(因此我可以通过键查找值)，但我需要一个允许多个值使用 hibernate 共享同一个键的集合最佳答案一个键具有多个值的映射称为多映射 - 在 Apache 公共

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

java - maria db 和 hibernate 排序规则的非法混合