spring、web.xml和servlet调度问题_Spring_Gwt_Servlets_Spring Mvc_Jpa

spring、web.xml和servlet调度问题

spring gwt servlets spring-mvc jpa

spring、web.xml和servlet调度问题,spring,gwt,servlets,spring-mvc,jpa,Spring,Gwt,Servlets,Spring Mvc,Jpa,我遇到了这个错误： [WARN] Exception while dispatching incoming RPC call com.google.gwt.user.server.rpc.UnexpectedException: Service method 'public abstract void ne.projl.client.service.ProjService.testdao(java.lang.Integer) throws java.lang.IllegalArgumentEx

我遇到了这个错误：

 [WARN] Exception while dispatching incoming RPC call
com.google.gwt.user.server.rpc.UnexpectedException: Service method 'public abstract void ne.projl.client.service.ProjService.testdao(java.lang.Integer) throws java.lang.IllegalArgumentException' threw an unexpected exception: java.lang.NullPointerException
    at com.google.gwt.user.server.rpc.RPC.encodeResponseForFailure(RPC.java:389)

。。。。。

第37行：

返回getEntityManager（）.find（entityClass，id）
web.xml
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
    xmlns:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context"
     xmlns:tx="http://www.springframework.org/schema/tx"
    xsi:schemaLocation="
                http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
                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
                http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">

    <context:annotation-config />

<!DOCTYPE web-app PUBLIC
 "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
 "http://java.sun.com/dtd/web-app_2_3.dtd" >
<web-app>
    <display-name>Geomajas GWT face example application</display-name>
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>
            classpath:org/geomajas/spring/geomajasContext.xml
            classpath:org/geomajas/plugin/rasterizing/DefaultRasterizedPipelines.xml
            WEB-INF/applicationContext.xml
<!--            WEB-INF/applicationContext2.xml -->
<!--            WEB-INF/layer*.xml -->
<!--            WEB-INF/map*.xml -->
            WEB-INF/layerOsm.xml
            WEB-INF/mapOsm.xml
<!--            WEB-INF/applicationContext2.xml -->

       </param-value>
    </context-param>


    <filter>
        <filter-name>CacheFilter</filter-name>
        <filter-class>org.geomajas.servlet.CacheFilter</filter-class>
    </filter>

    <filter-mapping>
        <filter-name>CacheFilter</filter-name>
        <url-pattern>*</url-pattern>
    </filter-mapping>

    <listener>
        <listener-class>org.geomajas.servlet.PrepareScanningContextListener</listener-class>
    </listener>

    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <listener>
        <listener-class>org.springframework.web.context.request.RequestContextListener</listener-class>
    </listener>

    <servlet>
        <servlet-name>GeomajasServiceServlet</servlet-name>
        <servlet-class>org.geomajas.gwt.server.GeomajasServiceImpl</servlet-class>
    </servlet>

    <servlet>
        <servlet-name>dispatcher</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath*:META-INF/geomajasWebContext.xml</param-value>
            <description>Spring Web-MVC specific (additional) context files.</description>
        </init-param>
        <load-on-startup>3</load-on-startup>
    </servlet>

<!-- SpringGwt remote service servlet --> 
    <servlet>
        <servlet-name>springGwtRemoteServiceServlet</servlet-name>
        <servlet-class>org.spring4gwt.server.SpringGwtRemoteServiceServlet</servlet-class>
        <init-param>
        <param-name>contexConfigLocation</param-name>
        <param-value>WEB-INF/applicationContext2.xml</param-value>
        <description>j</description>
        </init-param>
    </servlet>

    <servlet-mapping>
        <servlet-name>GeomajasServiceServlet</servlet-name>
        <url-pattern>/showcase/geomajasService</url-pattern>
    </servlet-mapping>

    <servlet-mapping>
        <servlet-name>dispatcher</servlet-name>
        <url-pattern>/d/*</url-pattern>
    </servlet-mapping>



    <servlet-mapping>
        <servlet-name>springGwtRemoteServiceServlet</servlet-name>
        <url-pattern>/showcase/springGwtServices/test</url-pattern>
    </servlet-mapping>

    <welcome-file-list>
        <welcome-file>index.html</welcome-file>
    </welcome-file-list>

</web-app>

The file applicationContext2.xml below .


Geomajas GWT人脸示例应用程序
上下文配置位置
类路径：org/geomajas/spring/geomajasContext.xml
类路径：org/geomajas/plugin/rasterising/DefaultRasterizedPipelines.xml
WEB-INF/applicationContext.xml
WEB-INF/layerOsm.xml
WEB-INF/mapOsm.xml
缓存过滤器
org.geomajas.servlet.CacheFilter
缓存过滤器
*
org.geomajas.servlet.PrepareScanningContextListener
org.springframework.web.context.ContextLoaderListener
org.springframework.web.context.request.RequestContextListener
GeomajasServiceServlet
org.geomajas.gwt.server.GeomajasServiceImpl
调度员
org.springframework.web.servlet.DispatcherServlet
上下文配置位置
classpath*：META-INF/geomajasWebContext.xml
SpringWebMVC特定（附加）上下文文件。
3.
springGwtRemoteServiceServlet
org.spring4gwt.server.SpringGwtRemoteServiceServlet
contexConfigLocation
WEB-INF/applicationContext2.xml
J
GeomajasServiceServlet
/showcase/geomajasService
调度员
/d/*
springGwtRemoteServiceServlet
/showcase/SpringWtService/test
index.html
下面是applicationContext2.xml文件。

我感觉我在applicationContext2.xml中声明的内容没有被检测到，因为如果我不将context:component scan base package=“ne.projl.*/>放在applicationContext.xml中（没有2），它就不会检测到我的带注释的serviceimpl。
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
    xmlns:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context"
     xmlns:tx="http://www.springframework.org/schema/tx"
    xsi:schemaLocation="
                http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
                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
                http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">

    <context:annotation-config />

<tx:annotation-driven transaction-manager="transactionManager" /> 
<context:component-scan base-package="ne.projl.*" />
<!--    <context:component-scan base-package="FULLY QUALIFIED" /> -->

<bean class="org.springframework.orm.jpa.LocalEntityManagerFactoryBean" id="entityManagerFactory">
        <property name="persistenceUnitName" value="MyPUnit" />
    </bean>

    <bean class="org.springframework.orm.jpa.JpaTransactionManager" id="transactionManager">
        <property name="entityManagerFactory" ref="entityManagerFactory" />
    </bean>


</beans>



编辑1：
@Repository("poiCategDAO")
public class PoiCategDAO extends AbstractDAO<Integer,PoiCateg> {
    @PersistenceContext(unitName = "ProjPUnit")
    EntityManager entityManager;

    //@Override
    protected EntityManager getEntityManager() {
        return entityManager;
    }


}

@Repository（“poiCategDAO”）
公共类PoiCategDAO扩展了AbstractDAO{
@PersistenceContext（unitName=“ProjPUnit”）
实体管理器实体管理器；
//@凌驾
受保护的EntityManager getEntityManager（）{
返回实体管理器；
}
}
该错误表示您的EntityManager为空。你是怎么设置的
如果您正在注入，请包括进行注入的配置文件，以及如何访问注入的类。
Aaaaaa来吧，伙计们，一个线索。。。或者我应该发布一些额外的数据？什么是ProjPUnit
？我认为应该用MyPUnit
：@PersistenceContext（unitName=“MyPUnit”）替换它。进行注入的文件不是已经发布了吗？ie applicationContext2.xml。
@Repository("poiCategDAO")
public class PoiCategDAO extends AbstractDAO<Integer,PoiCateg> {
    @PersistenceContext(unitName = "ProjPUnit")
    EntityManager entityManager;

    //@Override
    protected EntityManager getEntityManager() {
        return entityManager;
    }


}