方案
在尝试阅读BalusC的回答on this post后,我尝试将服务器的servlet-api
添加到现有的动态Web应用程序中。
所以从早上开始使用maven依赖项目
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>${servlet.version}</version>
<scope>provided</scope>
</dependency>
在阅读了BalusC的回答之后,我从javax.servlet
删除了pom.xml
依赖关系,并将* Target Runtime添加到我的项目中。
问题
在此之后所有错误(在eclipse的窗口中)都消失了。但是当我尝试maven clean install
时,它会[ERROR] COMPILATION ERROR : package javax.servlet does not exist
。
但是,如果我在javax.servlet
中添加了pom.xml
的依赖关系,那么它可以正常工作。
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/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>IncidentManagement</groupId>
<artifactId>IncidentManagement</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<build>
<sourceDirectory>src.main.java</sourceDirectory>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.5.1</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
<plugin>
<artifactId>maven-war-plugin</artifactId>
<version>3.0.0</version>
<configuration>
<warSourceDirectory>WebContent</warSourceDirectory>
</configuration>
</plugin>
</plugins>
</build>
<properties>
<java.version>1.8</java.version>
<junit.version>4.12</junit.version>
<servlet.version>3.1.0</servlet.version>
<mojarra.version>2.2.12</mojarra.version>
<primefaces.version>5.3</primefaces.version>
<maven.compiler.plugin.version>3.3</maven.compiler.plugin.version>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<repositories>
<repository>
<id>JBoss repository</id>
<url>http://repository.jboss.org/nexus/content/groups/public/</url>
</repository>
</repositories>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.8.2</version>
<scope>test</scope>
</dependency>
<!-- ORACLE database driver -->
<!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.38</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>3.6.3.Final</version>
</dependency>
<dependency>
<groupId>dom4j</groupId>
<artifactId>dom4j</artifactId>
<version>1.6.1</version>
</dependency>
<dependency>
<groupId>javassist</groupId>
<artifactId>javassist</artifactId>
<version>3.12.1.GA</version>
</dependency>
<!-- <dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>${servlet.version}</version>
<scope>provided</scope>
</dependency> -->
<!-- Mojarra JSF -->
<dependency>
<groupId>com.sun.faces</groupId>
<artifactId>jsf-api</artifactId>
<version>${mojarra.version}</version>
</dependency>
<dependency>
<groupId>com.sun.faces</groupId>
<artifactId>jsf-impl</artifactId>
<version>${mojarra.version}</version>
</dependency>
<!-- PrimeFaces -->
<dependency>
<groupId>org.primefaces</groupId>
<artifactId>primefaces</artifactId>
<version>${primefaces.version}</version>
</dependency>
<!-- Excel and CSV -->
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>3.10-FINAL</version>
<type>jar</type>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>3.10-FINAL</version>
<type>jar</type>
</dependency>
<!-- PDF -->
<dependency>
<groupId>com.lowagie</groupId>
<artifactId>itext</artifactId>
<version>2.1.7</version>
</dependency>
<!-- JSON -->
<dependency>
<groupId>com.googlecode.json-simple</groupId>
<artifactId>json-simple</artifactId>
<version>1.1.1</version>
</dependency>
<!-- Primefaces Theme -->
<!-- https://mvnrepository.com/artifact/org.primefaces.extensions/all-themes -->
<dependency>
<groupId>org.primefaces.extensions</groupId>
<artifactId>all-themes</artifactId>
<version>1.0.8</version>
</dependency>
</dependencies>
</project>
P.S:我使用的是Java 8,Apache tomcat 8和maven 3.
答案 0 :(得分:0)
说明它找不到课程是完全正确的,因为你没有在你的pom文件中找到它......
将依赖关系作为&#34;提供&#34;是正确的。在编译时,它将使用从存储库下载的存根,在运行时它将使用servlet容器中安装和提供的实际类。
Balus的答案与maven项目无关,只有本机Eclipse项目不是在Eclipse外部构建的。
答案 1 :(得分:-1)
@Junaid,我在工作场所遇到同样的问题。后来我意识到servlet-api.jar文件不是工作场所提供的存储库。我猜想,我们在代理后面,并且从本地存储库下载文件而不是从Maven下载文件。为此,我不得不使用j2ee.jar文件。