小贝子编程

无法从 oracle 中选择数据，即使休眠查询正在运行



我正在点击下面的网址：

http://localhost:8080/bot1/deal/index/123

我有数据库表，数据为：

数据库数据

我的目录结构：

目录结构

我得到以下异常，并且列表的打印大小为零，sopln 语句是 DealDaoImpl，因为查询中不存在任何数据：

休眠：选择"this_"。OPTY_NUMBER OPTY_NUMBER1_0_0_， 这_。PROJECT_NAME PROJECT_NAME2_0_0_ 从 CQ_CCW_ALL_DEAL this_ 0 休眠：选择"this_"。OPTY_NUMBER OPTY_NUMBER1_0_0_， 这_。PROJECT_NAME CQ_CCW_ALL_DEAL this_PROJECT_NAME2_0_0_ 2017年6月25日 上午10：39：21 org.apache.catalina.core.StandardWrapperValve invoke SEVERE： Servlet.service() for servlet [webmvc-dispatcher] in 路径 [/bot1] 的上下文引发异常 [请求处理失败; 嵌套异常是 java.lang.IndexOutOfBoundsException： Index： 0， 大小： 0] 与根本原因 java.lang.IndexOutOfBounds异常： 索引： 0， 大小： 0 at java.util.ArrayList.rangeCheck(未知来源) at java.util.ArrayList.get(Unknown Source) at com.bot1.serviceImpl.DealServiceImpl.getDealDetails(DealServiceImpl.java：21) at com.bot1.controller.BotController.getDeal(BotController.java：34) 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.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) at javax.servlet.http.HttpServlet.service(HttpServlet.java：621) at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java：837) at javax.servlet.http.HttpServlet.service(HttpServlet.java：728) at 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) at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(未知来源)

这是我的代码：

网络.xml

<?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>

webmvc-dispatcher-servlet.xml

<?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>

应用程序上下文.xml

<?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>

机器人控制器.java

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;
}
}

交易服务.java

package com.bot1.service;
import com.bot1.model.Deal;
public interface DealService {
public Deal getDealDetails(String dealId); 
}

交易服务.java

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);
}
}

交易道.java

package com.bot1.dao;
import java.util.List;
import com.bot1.model.Deal;
public interface DealDao {
public List<Deal> getDeal(String dealId);
}

交易道英普尔.java

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();
}
}

交易.java

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;
}
}

你得到java.lang.IndexOutOfBoundsException: Index: 0, Size: 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。

将dealId用作 123 或 325。

有非常小的错误。 从应用程序上下文.xml - ， 1521：XE 替换为 1521/XE，问题已解决。

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