Spring WebApp Maven - 源文件夹不在Java构建类路径上

Question

我正在关注此article以了解如何使用Spring MVC创建Java Web应用程序。我首先在一个单独的位置创建了Web应用程序项目 CounterWebApp （ mvn eclipse：eclipse -Dwtpversion = 2.0 ）然后在Eclipse中导入整个项目。

我很难将 BaseController.java 放在正确的包中，如文章所述。它是

1. “源文件夹不在Java构建类路径上”， OR

2. 未在该位置创建BaseController.java （的 /src/main/java/com/mkyong/controller/BaseController.java ）

请帮我理解如何正确操作？在eclipse中导入项目之后，以下是我的 .classpath 文件和 pom.xml 的内容。

的.classpath：

<classpath>
  <classpathentry kind="src" path="src/main/resources" excluding="**/*.java"/>
  <classpathentry kind="output" path="target/classes"/>
  <classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
  <classpathentry kind="var" path="M2_REPO/org/springframework/spring-core/3.2.0.RELEASE/spring-core-3.2.0.RELEASE.jar"/>
  <classpathentry kind="var" path="M2_REPO/commons-logging/commons-logging/1.1.1/commons-logging-1.1.1.jar"/>
  <classpathentry kind="var" path="M2_REPO/org/springframework/spring-web/3.2.0.RELEASE/spring-web-3.2.0.RELEASE.jar"/>
  <classpathentry kind="var" path="M2_REPO/org/springframework/spring-context/3.2.0.RELEASE/spring-context-3.2.0.RELEASE.jar"/>
  <classpathentry kind="var" path="M2_REPO/org/springframework/spring-aop/3.2.0.RELEASE/spring-aop-3.2.0.RELEASE.jar"/>
  <classpathentry kind="var" path="M2_REPO/aopalliance/aopalliance/1.0/aopalliance-1.0.jar"/>
  <classpathentry kind="var" path="M2_REPO/org/springframework/spring-beans/3.2.0.RELEASE/spring-beans-3.2.0.RELEASE.jar"/>
  <classpathentry kind="var" path="M2_REPO/org/springframework/spring-expression/3.2.0.RELEASE/spring-expression-3.2.0.RELEASE.jar"/>
  <classpathentry kind="var" path="M2_REPO/org/springframework/spring-webmvc/3.2.0.RELEASE/spring-webmvc-3.2.0.RELEASE.jar"/>
  <classpathentry kind="var" path="M2_REPO/junit/junit/4.11/junit-4.11.jar" sourcepath="M2_REPO/junit/junit/4.11/junit-4.11-sources.jar"/>
  <classpathentry kind="var" path="M2_REPO/org/hamcrest/hamcrest-core/1.3/hamcrest-core-1.3.jar"/>
</classpath>

的pom.xml

<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/maven-v4_0_0.xsd">
        <modelVersion>4.0.0</modelVersion>
        <groupId>com.sandeep</groupId>
        <artifactId>CounterWebApp</artifactId>
        <packaging>war</packaging>
        <version>1.0-SNAPSHOT</version>
        <name>CounterWebApp Maven Webapp</name>
        <url>http://maven.apache.org</url>

        <properties>
                <spring.version>3.2.0.RELEASE</spring.version>
                <junit.version>4.11</junit.version>
                <jdk.version>1.7</jdk.version>
        </properties>

        <dependencies>

                <!-- Spring 3 dependencies -->
                <dependency>
                        <groupId>org.springframework</groupId>
                        <artifactId>spring-core</artifactId>
                        <version>${spring.version}</version>
                </dependency>

                <dependency>
                        <groupId>org.springframework</groupId>
                        <artifactId>spring-web</artifactId>
                        <version>${spring.version}</version>
                </dependency>

                <dependency>
                        <groupId>org.springframework</groupId>
                        <artifactId>spring-webmvc</artifactId>
                        <version>${spring.version}</version>
                </dependency>

                <dependency>
                        <groupId>junit</groupId>
                        <artifactId>junit</artifactId>
                        <version>${junit.version}</version>
                        <scope>test</scope>
                </dependency>
        </dependencies>
        <build>
                <finalName>CounterWebApp</finalName>
                <plugins>
                        <plugin>
                                <groupId>org.apache.maven.plugins</groupId>
                                <artifactId>maven-compiler-plugin</artifactId>
                                <version>3.0</version>
                                <configuration>
                                        <source>${jdk.version}</source>
                                        <target>${jdk.version}</target>
                                </configuration>
                        </plugin>
                </plugins>
        </build>
</project>

Answer 1

问题如何解决：

1. 在“main”下创建了一个文件夹“java”（文件 - ＆gt;新建 - ＆gt;文件夹）。完成此步骤后，我们在src / main下有3个文件夹：java，resources，webapp。

2. 我下载了随文章提供的.zip，将.classpath与我的相比较并对其进行了相应的修改。

此时，我的eclipse.classpath内容如下所示：

<?xml version="1.0" encoding="UTF-8"?>
<classpath>
  <classpathentry kind="src" path="src/main/java" including="**/*.java"/>
  <classpathentry kind="src" path="src/main/resources" excluding="**/*.java"/>
  <classpathentry kind="output" path="target/classes"/>
  <classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
  <classpathentry kind="var" path="M2_REPO/org/springframework/spring-core/3.2.0.RELEASE/spring-core-3.2.0.RELEASE.jar"/>
  <classpathentry kind="var" path="M2_REPO/commons-logging/commons-logging/1.1.1/commons-logging-1.1.1.jar"/>
  <classpathentry kind="var" path="M2_REPO/org/springframework/spring-web/3.2.0.RELEASE/spring-web-3.2.0.RELEASE.jar"/>
  <classpathentry kind="var" path="M2_REPO/org/springframework/spring-context/3.2.0.RELEASE/spring-context-3.2.0.RELEASE.jar"/>
  <classpathentry kind="var" path="M2_REPO/org/springframework/spring-aop/3.2.0.RELEASE/spring-aop-3.2.0.RELEASE.jar"/>
  <classpathentry kind="var" path="M2_REPO/aopalliance/aopalliance/1.0/aopalliance-1.0.jar"/>
  <classpathentry kind="var" path="M2_REPO/org/springframework/spring-beans/3.2.0.RELEASE/spring-beans-3.2.0.RELEASE.jar"/>
  <classpathentry kind="var" path="M2_REPO/org/springframework/spring-expression/3.2.0.RELEASE/spring-expression-3.2.0.RELEASE.jar"/>
  <classpathentry kind="var" path="M2_REPO/org/springframework/spring-webmvc/3.2.0.RELEASE/spring-webmvc-3.2.0.RELEASE.jar"/>
  <classpathentry kind="var" path="M2_REPO/junit/junit/4.11/junit-4.11.jar" sourcepath="M2_REPO/junit/junit/4.11/junit-4.11-sources.jar"/>
  <classpathentry kind="var" path="M2_REPO/org/hamcrest/hamcrest-core/1.3/hamcrest-core-1.3.jar"/>
</classpath>

终于创建了Spring MVC控制器类BaseController.java（ /src/main/java/com/sandeep/controller/BaseController.java ）

• 选择“java”，新增 - ＆gt;其他 - ＆gt;类 - ＆gt;下一步。

• 包：com.sandeep.controller

• 名称：BaseController