Example usage for javax.servlet UnavailableException UnavailableException

Introduction

In this page you can find the example usage for javax.servlet UnavailableException UnavailableException.

Prototype


public UnavailableException(String msg)

Source Link

Document

Constructs a new exception with a descriptive message indicating that the servlet is permanently unavailable.

Usage

From source file:org.vfny.geoserver.config.MultipleActionServlet.java

/**
 * <p>Parses one module config file.</p>
 *
 * @param digester Digester instance that does the parsing
 * @param path The path to the config file to parse.
 *
 * @throws UnavailableException if file cannot be read or parsed
 * @since Struts 1.2/*from  ww  w  . jav a 2  s  . c  o  m*/
 */
protected void parseModuleConfigFile(Digester digester, String path) throws UnavailableException {
    InputStream input = null;

    try {
        Resource[] resources = WebApplicationContextUtils.getWebApplicationContext(getServletContext())
                .getResources(path);
        final int length = resources.length;

        for (int i = 0; i < length; i++) {
            URL url = resources[i].getURL(); /*getServletContext().getResource(path)*/
            ;

            // If the config isn't in the servlet context, try the class loader
            // which allows the config files to be stored in a jar
            if (url == null) {
                url = getClass().getResource(path);
            }

            if (url == null) {
                String msg = internal.getMessage("configMissing", path);
                log.error(msg);
                throw new UnavailableException(msg);
            }

            InputSource is = new InputSource(url.toExternalForm());
            input = url.openStream();
            is.setByteStream(input);
            digester.parse(is);
        }
    } catch (MalformedURLException e) {
        handleConfigException(path, e);
    } catch (IOException e) {
        handleConfigException(path, e);
    } catch (SAXException e) {
        handleConfigException(path, e);
    } finally {
        if (input != null) {
            try {
                input.close();
            } catch (IOException e) {
                throw new UnavailableException(e.getMessage());
            }
        }
    }
}

From source file:org.vfny.geoserver.config.MultipleActionServlet.java

/**
 * <p>Simplifies exception handling in the <code>parseModuleConfigFile</code> method.<p>
 * @param path/*  ww w.  java  2  s  . co m*/
 * @param e
 * @throws UnavailableException as a wrapper around Exception
 */
private void handleConfigException(String path, Exception e) throws UnavailableException {
    String msg = internal.getMessage("configParse", path);
    log.error(msg, e);
    throw new UnavailableException(msg);
}

From source file:org.vfny.geoserver.config.web.MultipleActionServlet.java

/**
 * <p>Parses one module config file.</p>
 *
 * @param digester Digester instance that does the parsing
 * @param path The path to the config file to parse.
 * @param config//from  www  .  j a  va2 s .  c o  m
 *
 * @throws UnavailableException if file cannot be read or parsed
 * @since Struts 1.2
 */
protected void parseModuleConfigFile(Digester digester, String path, ModuleConfig config)
        throws UnavailableException {
    InputStream input = null;
    Resource[] resources = null;

    try {
        resources = WebApplicationContextUtils.getWebApplicationContext(getServletContext()).getResources(path);
    } catch (IOException ex) {
        handleConfigException(path, ex);
    }

    final int length = resources.length;

    for (int i = 0; i < length; i++) {
        try {
            URL url = resources[i].getURL(); /*getServletContext().getResource(path)*/
            ;

            // If the config isn't in the servlet context, try the class loader
            // which allows the config files to be stored in a jar
            if (url == null) {
                url = getClass().getResource(path);
            }

            if (url == null) {
                String msg = internal.getMessage("configMissing", path);
                log.error(msg);
                throw new UnavailableException(msg);
            }

            InputSource is = new InputSource(url.toExternalForm());
            input = url.openStream();
            is.setByteStream(input);
            digester.parse(is);
        } catch (MalformedURLException e) {
            handleConfigException(path, e);
        } catch (IOException e) {
            handleConfigException(path, e);
        } catch (SAXException e) {
            handleConfigException(path, e);
        } finally {
            if (input != null) {
                try {
                    input.close();

                    if ((length > 1) && (i < (length - 1))) {
                        digester.push(config);
                    }
                } catch (IOException e) {
                    throw new UnavailableException(e.getMessage());
                }
            }
        }
    }
}