The JSP page is accessed but fails to compile, and the server log contains the error message “Unable to execute command” with the following stack trace:
at org.apache.tools.ant.taskdefs.Execute$Java13CommandLauncher.exec (Execute.java:655) at org.apache.tools.ant.taskdefs.Execute.launch (Execute.java:416) at org.apache.tools.ant.taskdefs.Execute.execute (Execute.java:427) at org.apache.tools.ant.taskdefs.compilers. DefaultCompilerAdapter.executeExternalCompile(DefaultCompilerAdapter. java:448) at org.apache.tools.ant.taskdefs.compilers.JavacExternal. execute(JavacExternal.java:81) at org.apache.tools.ant.taskdefs.Javac. compile(Javac.java:842) at org.apache.tools.ant.taskdefs.Javac.execute (Javac.java:682) at org.apache.jasper.compiler.Compiler.generateClass (Compiler.java:396)
Set the JSP compilation switch fork to false.
This can be done either of two ways:
Globally, by setting the fork init parameter of the JspServlet in ${S1AS_HOME}/domains/domain1/config/default-web.xml to false:
<servlet\> <servlet-name\>jsp</servlet-name\> <servlet-class\>org.apache. jasper.servlet.JspServlet</servlet-class\> .... <init-param\> <param-name\> fork</param-name\> <param-value\>false</param-value\> </init-param\> .... </servlet\>
On a per-web application basis, by setting the fork JSP configuration property in sun-web.xml to false:
<sun-web-app\> <jsp-config\> <property name="fork" value="false" /\> </jsp-config\> </sun-web-app\>
Either setting will prevent ant from spawning a new process for javac compilation.