导入javax.servlet和org.hibernate无法解析-Ubuntu 12.04上的Eclipse Kepler

Question

I installed latest version of Eclipse Java EE Kepler version.
And tried to write easy program on Java. But when I make some import statements I catch message:

The import xxx cannot be resolved.

It doesn't work for - javax.servlet, org.hibernate, org.springframework, org.junit .

I don't know why exactly this happen. I'm using 1.7 JDK + tomcat 7. Current OS is Ubuntu 12.04.
I added tomcat 7 to eclipse, and SpringSource Tool Suite for Eclipse Kepler.

How to solve this trouble?

Answer 1

java.servlet, org.hibernate, etc. are not part of the JDK. They're external libraries (jars) that must be added to the classpath.

Answer 2

As mentioned in the other question you need to either to download the jar files manually and add them to the class path, or use a build tool such as maven it will help you download the dependencies you will specify in the pom.xml file and add them to the classpath. And more to that you can run build and package in a war file for deploying your application into tomcat

Answer 3

For hibernate, be sure you added spring-orm in your pom.xml file

 <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-orm</artifactId>
        <version>4.2.5.RELEASE</version>
    </dependency>