JavaConfig：无法解析类型 javax.servlet.ServletContext 和 javax.servlet.ServletException

Question

create my first project in Spring and I have some problem. I use JavaConfig to configuration my project and when I start I have this error:

Error:(6, 8) java: cannot access javax.servlet.ServletException
class file for javax.servlet.ServletException not found

I now I have to add javax.servlet api but I do not know where to do it. I create my project in IntelliJ Ultimate 2017.

Answer 1

It seems like you haven't included the javax.servlet.jar library in your project.

If you're not using any dependency managers, you should add 'javax.servlet.jar' file to your classpath manually with Intellij IDEA: Project Structure (Ctrl+Alt+Shift+S) -> Libraries -> New Project Library -> Java. This jar-file can be downloaded here: http://central.maven.org/maven2/javax/servlet/javax.servlet-api/3.0.1/javax.servlet-api-3.0.1.jar

If you're using Maven, then just add this dependency to maven pom.xml file.

<dependency>
    <groupId>javax.servlet</groupId>
    <artifactId>javax.servlet-api</artifactId>
    <version>3.1.0</version>
    <scope>provided</scope>
 </dependency>

Answer 2

ran into a similar problem, I already had a dependency implemented

<dependency>
    <groupId>javax.servlet</groupId>
    <artifactId>javax.servlet-api</artifactId>
    <version>4.0.1</version>
    <scope>provided</scope>
</dependency>

However, the problem was solved by changing the version of

<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-webmvc</artifactId>
    <version>6.0.4</version>
</dependency>

to:

<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-webmvc</artifactId>
    <version>5.2.9.RELEASE</version>
</dependency>