The javax. servlet. http package does not exist when Ant is used for packaging. javax. servlet

The javax. servlet. http package does not exist when Ant is used for packaging. javax. servlet

Obviously, the cause of this error is that the corresponding jar package is missing. The specific reason is that servlet and JSP are not part of Java platform JavaSE (Standard Edition), but part of Java EE (Enterprise Edition). Therefore, the location of the compiler servlet must be informed. There are three solutions:

First, add apache-tomcat-7.0.55 \ lib \ servlet-api.jar to the environment variable.

Second, add the servlet-api.jar directly to the lib folder.

Third, in build. add the corresponding fileset in xml and include the corresponding servlet-api.jar. In fact, it is to add the path of the jar package for the classpath of a single project. The principle is the same as that of the first method.