maven - 找不到HttpSession类

Question

我正在grails 2.3.7上使用groovy构建一个项目。而是使用默认的grails插件，我想将插件配置为maven依赖项。

我还想使用 jetty 服务器代替tomcat服务器和mongodb代替常规的关系数据库。

创建项目后，我执行了“ grails create-pom ”为项目创建pom.xml文件。

我已经对pom.xml添加了以下更改。

删除了对hibernate的依赖，并为mongodb添加了以下依赖

<dependency>
    <groupId>org.grails.plugins</groupId>
    <artifactId>mongodb</artifactId>
    <version>3.0.1</version>
    <scope>compile</scope>
    <type>zip</type>
</dependency>

删除了tomcat的默认插件，并为jetty添加了以下插件。

<dependency>
    <groupId>org.grails.plugins</groupId>
    <artifactId>jetty</artifactId>
    <version>3.0.0</version>
    <scope>compile</scope>
    <type>zip</type>
</dependency>

我还为grails插件配置了存储库。

在执行代码时，出现以下错误。

[INFO] Scanning for projects...
[WARNING] 
[WARNING] Some problems were encountered while building the effective model for com.mycompany:grails-mongodb-demo:grails-app:0.1
[WARNING] 'build.plugins.plugin.version' for org.apache.maven.plugins:maven-surefire-plugin is missing. @ line 200, column 21
[WARNING] 
[WARNING] It is highly recommended to fix these problems because they threaten the stability of your build.
[WARNING] 
[WARNING] For this reason, future Maven versions might no longer support building such malformed projects.
[WARNING] 
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building grails-mongodb-demo 0.1
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] --- maven-clean-plugin:2.4.1:clean (default-clean) @ grails-mongodb-demo ---
[INFO] Deleting /mnt/data/Work/Tutorials/Practice/grails/grails-mongodb-demo/target
[INFO] Deleting /mnt/data/Work/Tutorials/Practice/grails/grails-mongodb-demo/plugins (includes = [**/*], excludes = [])
[INFO] 
[INFO] --- grails-maven-plugin:2.3.7:clean (default-clean) @ grails-mongodb-demo ---
[WARNING] Grails Start with out fork
|Loading Grails 2.3.7
|Configuring classpath
|Running pre-compiled script
.
|Environment set to development
....................
|Application cleaned.
[INFO] 
[INFO] --- grails-maven-plugin:2.3.7:validate (default-validate) @ grails-mongodb-demo ---
[INFO] 
[INFO] --- grails-maven-plugin:2.3.7:init (default-init) @ grails-mongodb-demo ---
[INFO] 
[INFO] --- grails-maven-plugin:2.3.7:config-directories (default-config-directories) @ grails-mongodb-demo ---
[INFO] 
[INFO] --- grails-maven-plugin:2.3.7:maven-compile (default-maven-compile) @ grails-mongodb-demo ---
[WARNING] Grails Start with out fork
|Loading Grails 2.3.7
|Configuring classpath
|Running pre-compiled script
..........
|Compiling 12 source files
.Error 
|
Fatal error during compilation org.apache.tools.ant.BuildException: java.lang.NoClassDefFoundError: javax/servlet/http/HttpSession (Use --stacktrace to see the full trace)

谁能告诉我，我缺少什么插件，或者我配置不正确吗？

Answer 1

将此添加到您pom.xml，看看是否有帮助:-

    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>javax.servlet-api</artifactId>
        <version>3.0.1</version>
    </dependency>