Question

我想使用Maven和Spring为我的所有webapps提供框架基本代码。 Tomcat7正在我的子项目中正确启动，但在尝试打开index.html时我得到了404.

父POM：

<?xml version="1.0" encoding="UTF-8"?>
<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.example.base</groupId>
    <artifactId>base</artifactId>
    <version>0.0.1-SNAPSHOT</version>

    <packaging>pom</packaging>

    <properties>

        <!-- Generic properties -->
        <java.version>1.6</java.version>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>

        <!-- Spring -->
        <spring.version>3.2.2.RELEASE</spring.version>

        <!-- Servlet -->
        <jstl.version>1.2</jstl.version>
        <servlet.version>2.5</servlet.version>

        <!-- Logging -->
        <slf4j.version>1.7.5</slf4j.version>
        <log4j.version>1.2.17</log4j.version>

        <!-- Test -->
        <junit.version>4.11</junit.version>

    </properties>

    <dependencies>

        <!-- Spring -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>${spring.version}</version>
            <exclusions>
                <!-- Exclude Commons Logging in favor of SLF4j -->
                <exclusion>
                    <groupId>commons-logging</groupId>
                    <artifactId>commons-logging</artifactId>
                 </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <!-- Servlet -->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>servlet-api</artifactId>
            <version>${servlet.version}</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jstl</artifactId>
            <version>${jstl.version}</version>
        </dependency>

        <!-- Logging -->
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
            <version>${slf4j.version}</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>jcl-over-slf4j</artifactId>
            <version>${slf4j.version}</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
            <version>${slf4j.version}</version>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>${log4j.version}</version>
            <scope>runtime</scope>
        </dependency>

        <!-- Apache Tiles -->
        <dependency>
            <groupId>org.apache.tiles</groupId>
            <artifactId>tiles-jsp</artifactId>
            <version>2.2.2</version>
            <exclusions>
                <!-- Exclude Commons Logging in favor of SLF4j -->
                <exclusion>
                    <groupId>commons-logging</groupId>
                    <artifactId>commons-logging-api</artifactId>
                 </exclusion>
            </exclusions>
        </dependency>

    </dependencies>

    <build>

        <defaultGoal>install</defaultGoal>

        <plugins>

            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.0</version>
                <configuration>
                    <compilerArguments>
                        <Xlint />
                    </compilerArguments>
                    <verbose>true</verbose>
                    <source>${java.version}</source>
                    <target>${java.version}</target>
                    <showWarnings>true</showWarnings>
                </configuration>
            </plugin>

            <plugin>
                <groupId>org.apache.tomcat.maven</groupId>
                <artifactId>tomcat7-maven-plugin</artifactId>
                <version>2.0</version>
                <configuration>
                    <webXml>src/main/webapp/WEB-INF/web.xml</webXml>
                </configuration>
                <executions>
                    <execution>
                        <id>tomcat-run</id>
                        <goals>
                            <goal>run</goal>
                        </goals>
                        <phase>pre-integration-test</phase>
                    </execution>
                    <execution>
                        <id>tomcat-shutdown</id>
                        <goals>
                            <goal>shutdown</goal>
                        </goals>
                        <phase>post-integration-test</phase>
                    </execution>
                </executions>
            </plugin>

        </plugins>

    </build>

</project>

Child POM：

<?xml version="1.0" encoding="UTF-8"?>
<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.example.child</groupId>
    <artifactId>child</artifactId>
    <version>0.0.1-SNAPSHOT</version>

    <packaging>war</packaging>

    <parent>
        <groupId>com.example.base</groupId>
        <artifactId>base</artifactId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>

    <build>

        <plugins>

            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-war-plugin</artifactId>
                <version>2.3</version>
            </plugin>

        </plugins>

    </build>

</project>

web.xml在父项目（基础）中提供。子项目中提供了JSP。

我猜404是由于pom包装，因为子项目不知道从哪里获取父项目的文件。我错了吗？有什么理由解决这个问题？

修改是否可以创建一个父spring webapp，它定义了包含JSP内容的所有配置（web.xml，applicationContext.xml，servletContext.xml，Controllers，...）和子项目？

Answer 1

查看maven war plugin。这个插件允许它所谓的overlays。

覆盖用于跨多个Web应用程序共享公共资源。 WAR项目的依赖关系收集在WEB-INF / lib中，但WAR项目本身覆盖的WAR工件除外。

它可能对您和您的要求有用。

Answer 2

您应该在每个模块中添加依赖项。最佳实践是在父pom中添加dependencyManagement，其中列出了与版本，范围等的依赖关系。请注意，父模块根本没有依赖元素（因为它只声明依赖关系）
在子pom中包含没有版本，范围等的依赖项。

父pom中的dependencyManagement：

<dependencyManagement>

    <!-- Spring -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context</artifactId>
        <version>${spring.version}</version>
        <exclusions>
            <!-- Exclude Commons Logging in favor of SLF4j -->
            <exclusion>
                <groupId>commons-logging</groupId>
                <artifactId>commons-logging</artifactId>
             </exclusion>
        </exclusions>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-webmvc</artifactId>
        <version>${spring.version}</version>
    </dependency>

    <!-- Servlet -->
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>servlet-api</artifactId>
        <version>${servlet.version}</version>
        <scope>provided</scope>
    </dependency>
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>jstl</artifactId>
        <version>${jstl.version}</version>
    </dependency>

    <!-- Logging -->
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-api</artifactId>
        <version>${slf4j.version}</version>
    </dependency>
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>jcl-over-slf4j</artifactId>
        <version>${slf4j.version}</version>
    </dependency>
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-log4j12</artifactId>
        <version>${slf4j.version}</version>
        <scope>runtime</scope>
    </dependency>
    <dependency>
        <groupId>log4j</groupId>
        <artifactId>log4j</artifactId>
        <version>${log4j.version}</version>
        <scope>runtime</scope>
    </dependency>

    <!-- Apache Tiles -->
    <dependency>
        <groupId>org.apache.tiles</groupId>
        <artifactId>tiles-jsp</artifactId>
        <version>2.2.2</version>
        <exclusions>
            <!-- Exclude Commons Logging in favor of SLF4j -->
            <exclusion>
                <groupId>commons-logging</groupId>
                <artifactId>commons-logging-api</artifactId>
             </exclusion>
        </exclusions>
    </dependency>

</dependencyManagement>

孩子pom中的依赖关系：

<dependencies>

    <!-- Spring -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context</artifactId>

    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-webmvc</artifactId>

    </dependency>

    <!-- Servlet -->
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>servlet-api</artifactId>

    </dependency>
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>jstl</artifactId>

    </dependency>

    <!-- Logging -->
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-api</artifactId>

    </dependency>
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>jcl-over-slf4j</artifactId>

    </dependency>
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-log4j12</artifactId>
    </dependency>
    <dependency>
        <groupId>log4j</groupId>
        <artifactId>log4j</artifactId>
     </dependency>

    <!-- Apache Tiles -->
    <dependency>
        <groupId>org.apache.tiles</groupId>
        <artifactId>tiles-jsp</artifactId>
      </dependency>

</dependencies>

Maven：Parent Spring Webapp

2 个答案: