具有Maven依赖关系的Spring Web App-部署期间找不到类 [英] Spring Web App with Maven dependency - class not found during deploy

问题描述

我有一个名为car-rental的项目，其中包含业务逻辑(使用maven构建).我将此项目用作其他名为car-rental的项目中的依赖项.声明为:

    <dependency>
        <groupId>com.car.rental</groupId>
        <artifactId>car-rental-model</artifactId>
        <version>1.0</version>
    </dependency>

在IDE中进行编译Eclipse car-rental可以查看依赖项中的所有类.但是在部署到Java EE容器(例如GlassFish)之后，没有看到类.服务器中已部署的项目不包含依赖项类.

汽车租赁项目不包含任何特定的构建定义:

<build>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-war-plugin</artifactId>
            <version>2.2</version>
            <configuration>
                <archive>
                    <manifest>
                        <addClasspath>true</addClasspath>
                    </manifest>
                </archive>
            </configuration>
        </plugin>
        <plugin>
            <artifactId>maven-assembly-plugin</artifactId>
            <version>2.2.2</version>
            <configuration>
                <descriptorRefs>
                    <descriptorRef>jar-with-dependencies</descriptorRef>
                </descriptorRefs>
            </configuration>
        </plugin>
    </plugins>
</build>

maven打包后，目标目录中的car-rental-1.0包含业务依赖项中必需的类.

这是我的汽车租赁项目结构:

可能我应该以某种方式在pom.xml文件中链接业务依赖关系，但是我不知道如何...或者也许我发现错了?

---

更新

car-rental-model打包为* .jar文件

<groupId>com.car.rental</groupId>
<artifactId>car-rental-model</artifactId>
<version>1.0</version>
<packaging>jar</packaging>
<name>car-rental-model</name>

汽车租赁打包为* .war文件

<modelVersion>4.0.0</modelVersion>
<groupId>com.car.rental</groupId>
<artifactId>car-rental</artifactId>
<version>1.0</version>
<packaging>war</packaging>

---

更新2

要提供有关项目的更多信息，我放置了配置文件:

web.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" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
      xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
      id="CarRental" version="2.5">
      <display-name>CarRental</display-name>
      <context-param>
          <param-name>contextConfigLocation</param-name>
          <param-value>/WEB-INF/dispatcher-servlet.xml</param-value>
      </context-param>
      <context-param>
          <param-name>log4jConfigLocation</param-name>
          <param-value>/WEB-INF/configs/log4j.properties</param-value>
      </context-param>
      <context-param>
          <param-name>log4jRefreshInterval</param-name>
          <param-value>1000</param-value>
      </context-param>
      <listener>
          <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
      </listener>
      <listener>
          <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
      </listener>
      <filter>
          <filter-name>encodingFilter</filter-name>
          <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
          <init-param>
              <param-name>encoding</param-name>
              <param-value>UTF-8</param-value>
          </init-param>
          <init-param>
              <param-name>forceEncoding</param-name>
              <param-value>true</param-value>
          </init-param>
      </filter>
      <filter-mapping>
          <filter-name>encodingFilter</filter-name>
          <url-pattern>/*</url-pattern>
      </filter-mapping>
      <servlet>
          <servlet-name>dispatcher</servlet-name>
          <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
          <load-on-startup>1</load-on-startup>
      </servlet>
      <servlet-mapping>
          <servlet-name>dispatcher</servlet-name>
          <url-pattern>*.htm</url-pattern>
      </servlet-mapping>
      <welcome-file-list>
          <welcome-file>redirect.jsp</welcome-file>
      </welcome-file-list>
  </web-app>

dispatcher-servlet.xml仅包含对其他配置文件的引用，这些配置文件仅存储对Tiles，控制器或DAO实现的配置-放置在这里并不重要……也许除了Hibernate映射之外:

<bean id="sessionFactory"
    class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
    <property name="dataSource" ref="dataSource" />
    <property name="hibernateProperties">
        <value>
            hibernate.dialect=org.hibernate.dialect.H2Dialect
            hibernate.hbm2ddl.auto=create
            hibernate.ejb.naming_strategy=org.hibernate.cfg.ImprovedNamingStrategy
            hibernate.connection.charSet=UTF-8
            hibernate.bytecode.provider=javassist
            hibernate.show_sql=true
            hibernate.format_sql=true
        </value>
    </property>
    <property name="annotatedClasses">
        <list>
            <value>com.car.rental.model.Car</value>
            <value>com.car.rental.model.User</value>
        </list>
    </property>
</bean>

解决方案

我认为您的配置可能看起来像这样

Car rental model

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.car.rental</groupId>
    <artifactId>car-rental-model</artifactId>
    <version>1.0</version>
    <packaging>jar</packaging>

    <!-- dependencies ... -->

    <build>
        <plugins>
            <plugin>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>1.6</source>
                    <target>1.6</target>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

Car rental

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.car.rental</groupId>
    <artifactId>car-rental</artifactId>
    <version>1.0</version>
    <packaging>war</packaging>

    <dependencies>
        <dependency>
            <groupId>com.car.rental</groupId>
            <artifactId>car-rental-model</artifactId>
            <version>1.0</version>
        </dependency>

        <!-- other dependencies -->
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>1.6</source>
                    <target>1.6</target>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

我在所有项目中都使用相同的配置，并且工作正常.如果它们都具有maven-compiler-plugin，我将更喜欢创建一个包含公用部分的父级.

I'm having project named car-rental which contains business logic (built with maven). I use this project as dependency in other project named car-rental. It's declared as :

    <dependency>
        <groupId>com.car.rental</groupId>
        <artifactId>car-rental-model</artifactId>
        <version>1.0</version>
    </dependency>

During compilation in IDE Eclipse car-rental see all classes from dependency. But after deploy to Java EE container (for example GlassFish) classes aren't seen. Deployed project in server doesn't contain dependency classes.

car-rental project doesn't contains any specific build definitions:

<build>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-war-plugin</artifactId>
            <version>2.2</version>
            <configuration>
                <archive>
                    <manifest>
                        <addClasspath>true</addClasspath>
                    </manifest>
                </archive>
            </configuration>
        </plugin>
        <plugin>
            <artifactId>maven-assembly-plugin</artifactId>
            <version>2.2.2</version>
            <configuration>
                <descriptorRefs>
                    <descriptorRef>jar-with-dependencies</descriptorRef>
                </descriptorRefs>
            </configuration>
        </plugin>
    </plugins>
</build>

After maven packaging, car-rental-1.0 in target directory, contains required classes from business dependency.

Here's my car-rental project structure:

Probably I should somehow link business dependency in pom.xml file, but I have no idea how... Or maybe I thining wrong?

---

UPDATE

car-rental-model is packaged as *.jar file

<groupId>com.car.rental</groupId>
<artifactId>car-rental-model</artifactId>
<version>1.0</version>
<packaging>jar</packaging>
<name>car-rental-model</name>

car-rental is packaged as *.war file

<modelVersion>4.0.0</modelVersion>
<groupId>com.car.rental</groupId>
<artifactId>car-rental</artifactId>
<version>1.0</version>
<packaging>war</packaging>

---

UPDATE 2

To give more info about project I put configuration files:

web.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" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
      xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
      id="CarRental" version="2.5">
      <display-name>CarRental</display-name>
      <context-param>
          <param-name>contextConfigLocation</param-name>
          <param-value>/WEB-INF/dispatcher-servlet.xml</param-value>
      </context-param>
      <context-param>
          <param-name>log4jConfigLocation</param-name>
          <param-value>/WEB-INF/configs/log4j.properties</param-value>
      </context-param>
      <context-param>
          <param-name>log4jRefreshInterval</param-name>
          <param-value>1000</param-value>
      </context-param>
      <listener>
          <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
      </listener>
      <listener>
          <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
      </listener>
      <filter>
          <filter-name>encodingFilter</filter-name>
          <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
          <init-param>
              <param-name>encoding</param-name>
              <param-value>UTF-8</param-value>
          </init-param>
          <init-param>
              <param-name>forceEncoding</param-name>
              <param-value>true</param-value>
          </init-param>
      </filter>
      <filter-mapping>
          <filter-name>encodingFilter</filter-name>
          <url-pattern>/*</url-pattern>
      </filter-mapping>
      <servlet>
          <servlet-name>dispatcher</servlet-name>
          <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
          <load-on-startup>1</load-on-startup>
      </servlet>
      <servlet-mapping>
          <servlet-name>dispatcher</servlet-name>
          <url-pattern>*.htm</url-pattern>
      </servlet-mapping>
      <welcome-file-list>
          <welcome-file>redirect.jsp</welcome-file>
      </welcome-file-list>
  </web-app>

dispatcher-servlet.xml contains only references to other configuration files, which stores only configurations to Tiles, controllers or DAO implementations - it's rather not important to place here... maybe except Hibernate mapping:

<bean id="sessionFactory"
    class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
    <property name="dataSource" ref="dataSource" />
    <property name="hibernateProperties">
        <value>
            hibernate.dialect=org.hibernate.dialect.H2Dialect
            hibernate.hbm2ddl.auto=create
            hibernate.ejb.naming_strategy=org.hibernate.cfg.ImprovedNamingStrategy
            hibernate.connection.charSet=UTF-8
            hibernate.bytecode.provider=javassist
            hibernate.show_sql=true
            hibernate.format_sql=true
        </value>
    </property>
    <property name="annotatedClasses">
        <list>
            <value>com.car.rental.model.Car</value>
            <value>com.car.rental.model.User</value>
        </list>
    </property>
</bean>

解决方案

I think your configuration could look like this

Car rental model

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.car.rental</groupId>
    <artifactId>car-rental-model</artifactId>
    <version>1.0</version>
    <packaging>jar</packaging>

    <!-- dependencies ... -->

    <build>
        <plugins>
            <plugin>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>1.6</source>
                    <target>1.6</target>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

Car rental

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.car.rental</groupId>
    <artifactId>car-rental</artifactId>
    <version>1.0</version>
    <packaging>war</packaging>

    <dependencies>
        <dependency>
            <groupId>com.car.rental</groupId>
            <artifactId>car-rental-model</artifactId>
            <version>1.0</version>
        </dependency>

        <!-- other dependencies -->
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>1.6</source>
                    <target>1.6</target>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

I use the same configuration in all my projects and it works fine. If all of them have the maven-compiler-plugin, I will prefer creating a parent containing the common parts.

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