## store this into classes/jython/get.java
package jython;
import javax.servlet.jsp.*;
import javax.servlet.jsp.tagext.*;
import org.python.util.PythonInterpreter;
import org.python.core.*;
public class get extends TagSupport{
public PythonInterpreter interp;
public String cmd;
protected PageContext pageContext;
public get(){super();}
public void setVar(String cmd){this.cmd=cmd;}
public void setPageContext(PageContext pageContext) {
this.pageContext = pageContext;
}
public int doEndTag() throws javax.servlet.jsp.JspTagException{
try{
if(pageContext.getAttribute("jythonInterp")==null){
interp = new PythonInterpreter();
pageContext.setAttribute("jythonInterp",interp,PageContext.PAGE_SCOPE);
} else {
interp=(PythonInterpreter)pageContext.getAttribute("jythonInterp");
}
String res=interp.eval(cmd).toString();
pageContext.getOut().write(res);
}catch(java.io.IOException e){
throw new JspTagException("IO Error: " + e.getMessage());
}
return EVAL_PAGE;
}
}
## store this into classes/jython/exec.java
package jython;
import javax.servlet.jsp.*;
import javax.servlet.jsp.tagext.*;
import org.python.util.PythonInterpreter;
public class exec extends BodyTagSupport{
public PythonInterpreter interp;
public void setParent(Tag parent) {
this.parent = parent;
}
public void setBodyContent(BodyContent bodyOut) {
this.bodyOut = bodyOut;
}
public void setPageContext(PageContext pageContext) {
this.pageContext = pageContext;
}
public Tag getParent() {
return this.parent;
}
public int doStartTag() throws JspException {
return EVAL_BODY_TAG;
}
public int doEndTag() throws JspException {
return EVAL_PAGE;
}
// Default implementations for BodyTag methods as well
// just in case a tag decides to implement BodyTag.
public void doInitBody() throws JspException {
}
public int doAfterBody() throws JspException {
String cmd = bodyOut.getString();
if(pageContext.getAttribute("jythonInterp")==null){
interp = new PythonInterpreter();
interp.set("pageContext",pageContext);
pageContext.setAttribute("jythonInterp",interp,PageContext.PAGE_SCOPE);
} else {
interp=(PythonInterpreter)pageContext.getAttribute("jythonInterp");
}
interp.exec(cmd);
return SKIP_BODY;
}
public void release() {
bodyOut = null;
pageContext = null;
parent = null;
}
protected BodyContent bodyOut;
protected PageContext pageContext;
protected Tag parent;
}
## store this into jsp/jython.tld
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE taglib PUBLIC "-//Sun Microsystems, Inc.//DTD JSP Tag Library 1.1//EN" "http://java.sun.com/j2ee/dtds/web-jsptaglibrary_1_1.dtd">
<taglib>
<tlibversion>1.0</tlibversion>
<jspversion>1.1</jspversion>
<shortname>jython</shortname>
<info>
A simple Jython tag library
</info>
<tag>
<name>exec</name>
<tagclass>jython.exec</tagclass>
</tag>
<tag>
<name>get</name>
<tagclass>jython.get</tagclass>
<bodycontent>empty</bodycontent>
<attribute>
<name>var</name>
<required>true</required>
</attribute>
</tag>
</taglib>
## add this to the web.xml file
<taglib>
<taglib-uri>http://www.jython.org</taglib-uri>
<taglib-location>/WEB-INF/jsp/jython.tld</taglib-location>
</taglib>
