Issues with VaadinSession in JAVA 8

General
1

Hi,

I have used VaadinSession ( com.vaadin.server.VaadinSession ) in a lot of places in my code. It compiles and runs fine with Java 7 but I get a compile error with Java 8.

The error says :

“Cannot access javax.servlet.http.HttpSessionBindingListener. class file for javax.servlet.http.HttpSessionBindingListener not found.”

I tried inculding this dependency in the pom, but it did not work.

javax.servlet javax.servlet-api 3.0.1 provided

Please let me know how to fix this. Thanks!

2

Missing this class file shouldn’t be related to compiling in Java 8. Are you sure the dependency is not corrupt in your Maven cache or something like that?

3

The same code when I run with java 7 works all fine, compiles and runs fine. Its only when I switch to java 8, it complains.

4

If the servlet api jar is definitely not corrupted and the only thing you change in your project is maven.compiler.source and maven.compiler.target to be 1.8 instead of 1.7. Then I got nothing. Sorry :frowning:

5

Just in case, I fix this by adding:

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