Java 即使hibernate查询正在运行,也无法从oracle中选择数据
我点击以下网址:Java 即使hibernate查询正在运行,也无法从oracle中选择数据,java,oracle,hibernate,spring-mvc,Java,Oracle,Hibernate,Spring Mvc,我点击以下网址: http://localhost:8080/bot1/deal/index/123 我有一个数据库表,数据如下: 我的目录结构: 我得到以下异常,它正在将sopln语句的列表大小打印为零,因为查询中不存在数据: 休眠:选择此密码作为密码1密码0密码0密码, 此项目名称为项目名称2\u 0\u 0\u来自CQ\u CCW\u ALL\u处理此项目 休眠:选择此密码作为密码1密码0密码0密码, 本项目名称为项目名称2\u 0\u 0\u来自CQ\u CCW\u所有交易
http://localhost:8080/bot1/deal/index/123
我有一个数据库表,数据如下:
我的目录结构:
我得到以下异常,它正在将sopln语句的列表大小打印为零,因为查询中不存在数据: 休眠:选择此密码作为密码1密码0密码0密码, 此项目名称为项目名称2\u 0\u 0\u来自CQ\u CCW\u ALL\u处理此项目 休眠:选择此密码作为密码1密码0密码0密码, 本项目名称为项目名称2\u 0\u 0\u来自CQ\u CCW\u所有交易_ 2017年6月25日上午10:39:21 org.apache.catalina.core.StandardWrapperValve 在中为Servlet[webmvc dispatcher]调用SEVERE:Servlet.service() 路径为[/bot1]的上下文引发异常[请求处理失败; 嵌套异常为java.lang.IndexOutOfBoundsException:索引:0, 大小:0]具有根本原因java.lang.IndexOutOfBoundsException:索引: 0,大小:0位于java.util.ArrayList.rangeCheck(未知源) java.util.ArrayList.get(未知源代码)位于 com.bot1.serviceinpl.dealserviceinpl.getDealDetails(dealserviceinpl.java:21) 位于com.bot1.controller.BotController.getDeal(BotController.java:34) 位于的sun.reflect.NativeMethodAccessorImpl.invoke0(本机方法) 位于的sun.reflect.NativeMethodAccessorImpl.invoke(未知源) sun.reflect.DelegatingMethodAccessorImpl.invoke(未知源)位于 java.lang.reflect.Method.invoke(未知源代码)位于 org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:215) 在 org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:132) 在 org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104) 在 org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:749) 在 org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:689) 在 org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:83) 在 org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:938) 在 org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:870) 在 org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:961) 在 org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:852) 位于javax.servlet.http.HttpServlet.service(HttpServlet.java:621) org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:837) 位于javax.servlet.http.HttpServlet.service(HttpServlet.java:728) org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) 在 org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) 在 org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51) 在 org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) 在 org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) 在 org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222) 在 org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123) 在 org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502) 在 org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171) 在 org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100) 在 org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953) 在 org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) 在 org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408) 在 org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1041) 在 org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:603) 在 org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310) 位于java.util.concurrent.ThreadPoolExecutor.runWorker(未知源) 位于java.util.concurrent.ThreadPoolExecutor$Worker.run(未知源) 位于java.lang.Thread.run(未知源)
这是我的代码: web.xml
DealService.java
DealServiceImpl.java
您将获得
java.lang.IndexOutOfBoundsException:索引:0,大小:0
异常。可能是由于
public-Deal-getDealDetails(String-dealId){..deals.get(0)…}
正在返回null
当您基于数据库中不存在的dealId
获取交易时,可能会发生这种情况
使用
dealId
作为123或325。有非常小的错误。从applicationContext.xml-,1521:XE被替换为1521/XE,问题得到了解决 请帮我找出哪里出了问题。有一个很小的错误。从applicationContext.xml-,1521:XE被替换为1521/XE,问题得到解决。您可以检查DealDaoImpl.java,大小我得到它为0,即使查询显示在控制台上,因为我的表有条目,它应该返回1。我尝试了123和325,得到了相同的异常,public-Deal-getDealDetails(String-dealId){..deals.get(0)…}只会返回null,因为我没有得到行,这只是我的问题,为什么我没有得到行。我看不到用于获取列表deals=dealdao.getdealId(dealId)的任何hibernate映射one-to-one
etc。您还需要添加hibernate映射。为什么我需要映射?在我的后端只有一个表cq\U ccw\U all\U deal,为什么要添加m
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" version="3.0">
<display-name>bot1</display-name>
<context-param>
<param-name>ApplicationContext</param-name>
<param-value>/WEB-INF/applicationContext.xml</param-value>
</context-param>
<servlet>
<servlet-name>webmvc-dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>webmvc-dispatcher</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<listener>
<listener-class>org.springframework.web.context.request.RequestContextListener</listener-class>
</listener>
</web-app>
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd">
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/views/" />
<property name="suffix" value=".jsp" />
</bean>
</beans>
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">
<context:annotation-config />
<context:component-scan base-package="com.bot1" />
<mvc:annotation-driven />
<mvc:resources mapping="/resources/**" location="/resources/" />
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName" value="oracle.jdbc.OracleDriver" />
<property name="url" value="jdbc:oracle:thin:@localhost:1521:XE" />
<property name="username" value="system" />
<property name="password" value="tiger" />
</bean>
<!-- Session Factory Declaration -->
<bean id="sessionFactory"
class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="packagesToScan" value="com.bot1.model" />
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.Oracle10gDialect</prop>
<prop key="hibernate.show_sql">true</prop>
<!-- <prop key="hibernate.enable_lazy_load_no_trans">true</prop> -->
<!-- <prop key="hibernate.default_schema">test</prop> -->
<prop key="format_sql">true</prop>
<!-- <prop key="use_sql_comments">true</prop> -->
<prop key="hibernate.hbm2ddl.auto">update</prop>
</props>
</property>
</bean>
<tx:annotation-driven transaction-manager="transactionManager" />
<bean id="transactionManager"
class="org.springframework.orm.hibernate4.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory" />
</bean>
</beans>
package com.bot1.controller;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import com.bot1.model.Deal;
import com.bot1.service.DealService;
@Controller
@RequestMapping("deal")
public class BotController {
@Autowired
private DealService dealService;
@RequestMapping(value="/index/{dealId}",method=RequestMethod.GET)
private String getDeal(@ModelAttribute("deal1") Deal deal,@PathVariable String dealId) {
deal= dealService.getDealDetails(dealId);
System.out.println(deal.getDeal_id());
System.out.println(deal.getDeal_name());
return null;
}
}
package com.bot1.service;
import com.bot1.model.Deal;
public interface DealService {
public Deal getDealDetails(String dealId);
}
package com.bot1.serviceImpl;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import com.bot1.dao.DealDao;
import com.bot1.model.Deal;
import com.bot1.service.DealService;
@Service
public class DealServiceImpl implements DealService {
@Autowired
private DealDao dealdao;
public Deal getDealDetails(String dealId) {
List<Deal> deals=dealdao.getDeal(dealId);
return deals.get(0);
}
}
package com.bot1.dao;
import java.util.List;
import com.bot1.model.Deal;
public interface DealDao {
public List<Deal> getDeal(String dealId);
}
package com.bot1.daoImpl;
import java.util.List;
import org.hibernate.SessionFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;
import org.springframework.transaction.annotation.Transactional;
import com.bot1.dao.DealDao;
import com.bot1.model.Deal;
@Repository
@Transactional
public class DealDaoImpl implements DealDao{
@Autowired
SessionFactory sessionFactory;
@SuppressWarnings("unchecked")
public List<Deal> getDeal(String dealId) {
System.out.println(sessionFactory.getCurrentSession().createCriteria(Deal.class).list().size());
return (List<Deal>) sessionFactory.getCurrentSession().createCriteria(Deal.class).list();
}
}
package com.bot1.model;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.Table;
@Entity
@Table(name = "CQ_CCW_ALL_DEAL")
public class Deal {
@Id
@Column(name="OPTY_NUMBER")
private String deal_id;
@Column(name="PROJECT_NAME")
private String deal_name;
public String getDeal_id() {
return deal_id;
}
public void setDeal_id(String deal_id) {
this.deal_id = deal_id;
}
public String getDeal_name() {
return deal_name;
}
public void setDeal_name(String deal_name) {
this.deal_name = deal_name;
}
}