Servlet.?
A friend is using some code and has imported javax.servlet.http. The code has many errors:
- javac -
SaveAsFilter.java:8: cannot find symbol
symbol: class Filter
class SaveAsFilter implements Filter{
^
SaveAsFilter.java:9: cannot find symbol
symbol : class FilterConfig
location: class javax.servlet.http.SaveAsFilter
FilterConfig fc;
^
SaveAsFilter.java:10: cannot find symbol
symbol : class ServletRequest
location: class javax.servlet.http.SaveAsFilter
public void doFilter(final ServletRequest request,
^
SaveAsFilter.java:11: cannot find symbol
symbol : class ServletResponse
location: class javax.servlet.http.SaveAsFilter
final ServletResponse
^
SaveAsFilter.java:13: cannot find symbol
symbol : class FilterChain
location: class javax.servlet.http.SaveAsFilter
FilterChain chain)
^
SaveAsFilter.java:14: cannot find symbol
symbol : class ServletException
location: package javax.servlet
throws java.io.IOException, javax.servlet.ServletException {
^
SaveAsFilter.java:28: cannot find symbol
symbol : class FilterConfig
location: class javax.servlet.http.SaveAsFilter
public void init(FilterConfig fc) throws ServletException {
^
SaveAsFilter.java:28: cannot find symbol
symbol : class ServletException
location: class javax.servlet.http.SaveAsFilter
public void init(FilterConfig fc) throws ServletException {
^
SaveAsFilter.java:18: cannot find symbol
symbol : class HttpServletResponse
location: class javax.servlet.http.SaveAsFilter
HttpServletResponse httpResponse = (HttpServletResponse) response;
^
SaveAsFilter.java:18: cannot find symbol
symbol : class HttpServletResponse
location: class javax.servlet.http.SaveAsFilter
HttpServletResponse httpResponse = (HttpServletResponse) response;
^
10 errors
Output completed (1 sec consumed) - Normal Termination
Can anyone help with these errors.
here is the code.
package javax.servlet.http;
import java.util.*;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
public
class SaveAsFilter implements Filter{
FilterConfig fc;
public void doFilter(final ServletRequest request,
final ServletResponse
response,
FilterChain chain)
throws java.io.IOException, javax.servlet.ServletException {
//Beginning PreProcessing
if (request.getParameter("saveas")!=null)
{
HttpServletResponse httpResponse = (HttpServletResponse) response;
httpResponse.setHeader("Content-disposition" , "attachment; filename="
+ request.getParameter("saveas")
);
}
//End PreProcessing
chain.doFilter(request,response);
//Beginning PostProcessing
//End PostProcessing
}
public void init(FilterConfig fc) throws ServletException {
this.fc = fc;
}
public void destroy() {
fc = null;
}
}
