Example usage for javax.servlet ServletRequest getAttributeNames

Introduction

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

Prototype

public Enumeration<String> getAttributeNames();

Source Link

Document

Returns an Enumeration containing the names of the attributes available to this request.

Usage

From source file:com.xsw.utils.Servlets.java

/**
 * ???Request Parameters, copy from spring WebUtils.
 * /* w  w  w.  ja v a  2 s .  c om*/
 * Parameter???.
 */
public static Map<String, Object> getParametersStartingWith(ServletRequest request, String prefix) {
    Validate.notNull(request, "Request must not be null");
    Map<String, Object> params = new TreeMap<String, Object>();
    if (prefix == null) {
        prefix = "";
    }
    // process Attribute
    Enumeration<String> paramNames = request.getAttributeNames();
    while (paramNames != null && paramNames.hasMoreElements()) {
        String paramName = paramNames.nextElement();
        if ("".equals(prefix) || paramName.startsWith(prefix)) {
            String unprefixed = paramName.substring(prefix.length());
            Object attobj = request.getAttribute(paramName);
            String[] values = null;
            if (attobj instanceof String[]) {
                values = (String[]) attobj;
            } else {
                values = new String[1];
                values[0] = String.valueOf(attobj);
            }
            if (values == null || values.length == 0) {
                // Do nothing, no values found at all.
            } else if (values.length > 1) {
                params.put(unprefixed, values);
            } else {
                params.put(unprefixed, values[0]);
            }
        }
    }
    // process parameter
    paramNames = request.getParameterNames();
    while (paramNames != null && paramNames.hasMoreElements()) {
        String paramName = paramNames.nextElement();
        if ("".equals(prefix) || paramName.startsWith(prefix)) {
            String unprefixed = paramName.substring(prefix.length());
            String[] values = request.getParameterValues(paramName);
            if (values == null || values.length == 0) {
                // Do nothing, no values found at all.
            } else if (values.length > 1) {
                params.put(unprefixed, values);
            } else {
                params.put(unprefixed, values[0]);
            }
        }
    }
    return params;
}

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From source file:com.jaspersoft.jasperserver.war.tags.BaseTagSupport.java

protected Map setRequestAttributes(Map attributes) {
    ServletRequest request = pageContext.getRequest();
    Set attributeNames = new HashSet();
    for (Enumeration it = request.getAttributeNames(); it.hasMoreElements();) {
        String attribute = (String) it.nextElement();
        attributeNames.add(attribute);//  ww w . j a v a2 s.  co m
    }

    Map restoreMap = new HashMap();
    for (Iterator it = attributes.entrySet().iterator(); it.hasNext();) {
        Map.Entry entry = (Map.Entry) it.next();
        String attribute = (String) entry.getKey();
        Object value = entry.getValue();

        Object restoreValue;
        if (attributeNames.contains(attribute)) {
            restoreValue = request.getAttribute(attribute);
        } else {
            restoreValue = NO_ATTRIBUTE;
        }
        restoreMap.put(attribute, restoreValue);

        request.setAttribute(attribute, value);
    }
    return restoreMap;
}

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From source file:com.sinosoft.one.mvc.web.impl.thread.RootEngine.java

/**
 * Keep a snapshot of the request attributes in case of an include, to
 * be able to restore the original attributes after the include.
 * /*from   w  w w .  ja  va  2s .  co m*/
 * @param inv
 */
private void saveAttributesBeforeInclude(final Invocation inv) {
    ServletRequest request = inv.getRequest();
    logger.debug("Taking snapshot of request attributes before include");
    Map<String, Object> attributesSnapshot = new HashMap<String, Object>();
    Enumeration<?> attrNames = request.getAttributeNames();
    while (attrNames.hasMoreElements()) {
        String attrName = (String) attrNames.nextElement();
        attributesSnapshot.put(attrName, request.getAttribute(attrName));
    }
    inv.setAttribute("$$one-mvc.attributesBeforeInclude", attributesSnapshot);
}

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From source file:net.paoding.rose.web.impl.thread.RootEngine.java

/**
 * Keep a snapshot of the request attributes in case of an include, to
 * be able to restore the original attributes after the include.
 * // w ww  . ja v a2  s .  c om
 * @param inv
 */
private void saveAttributesBeforeInclude(final Invocation inv) {
    ServletRequest request = inv.getRequest();
    logger.debug("Taking snapshot of request attributes before include");
    Map<String, Object> attributesSnapshot = new HashMap<String, Object>();
    Enumeration<?> attrNames = request.getAttributeNames();
    while (attrNames.hasMoreElements()) {
        String attrName = (String) attrNames.nextElement();
        attributesSnapshot.put(attrName, request.getAttribute(attrName));
    }
    inv.setAttribute("$$paoding-rose.attributesBeforeInclude", attributesSnapshot);
}

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From source file:com.laxser.blitz.web.impl.thread.RootEngine.java

/**
 * Keep a snapshot of the request attributes in case of an include, to
 * be able to restore the original attributes after the include.
 * //from  w ww .  j  av a 2  s  .  co  m
 * @param inv
 */
private void saveAttributesBeforeInclude(final Invocation inv) {
    ServletRequest request = inv.getRequest();
    logger.debug("Taking snapshot of request attributes before include");
    Map<String, Object> attributesSnapshot = new HashMap<String, Object>();
    Enumeration<?> attrNames = request.getAttributeNames();
    while (attrNames.hasMoreElements()) {
        String attrName = (String) attrNames.nextElement();
        attributesSnapshot.put(attrName, request.getAttribute(attrName));
    }
    inv.setAttribute("$$paoding-blitz.attributesBeforeInclude", attributesSnapshot);
}

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From source file:org.opencms.util.CmsRequestUtil.java

/**
 * Returns a map with all request attributes.<p>
 * //from   w w w.j a va 2s .c  o m
 * @param req the request
 * 
 * @return the attribute map
 */
public static Map<String, Object> getAtrributeMap(ServletRequest req) {

    if (req instanceof CmsFlexRequest) {
        return ((CmsFlexRequest) req).getAttributeMap();
    }
    Map<String, Object> attrs = new HashMap<String, Object>();
    Enumeration<String> atrrEnum = CmsCollectionsGenericWrapper.enumeration(req.getAttributeNames());
    while (atrrEnum.hasMoreElements()) {
        String key = atrrEnum.nextElement();
        Object value = req.getAttribute(key);
        attrs.put(key, value);
    }
    return attrs;
}

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From source file:org.rhq.enterprise.gui.legacy.util.RequestUtils.java

public static String dumpRequestAttributesToString(ServletRequest request) {
    StringBuffer output = new StringBuffer();
    for (Enumeration e = request.getAttributeNames(); e.hasMoreElements();) {
        String name = (String) e.nextElement();
        Object value = request.getAttribute(name);
        output.append("name = '" + name + "'\n");
        output.append("type = '" + value.getClass().getCanonicalName() + "'\n");
        output.append("value = '" + value.toString() + "'\n\n");
    }/*from   ww w  . ja  v  a  2  s  .c o  m*/

    return output.toString();
}

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From source file:org.yes.cart.web.support.util.HttpUtil.java

private static void dumpParamsAndAttrs(final ServletRequest req, final StringBuilder stringBuilder) {
    final Enumeration parameterNames = req.getParameterNames();
    while (parameterNames.hasMoreElements()) {
        final String key = (String) parameterNames.nextElement();
        stringBuilder.append(MessageFormat.format("\nParameter {0}={1}", key, req.getParameter(key)));
    }//  w  ww. j av  a 2  s  .  co m
    Enumeration attributeNames = req.getAttributeNames();
    while (attributeNames.hasMoreElements()) {
        final String key = (String) attributeNames.nextElement();
        stringBuilder.append(MessageFormat.format("\nAttribute {0}={1}", key, req.getAttribute(key)));
    }
}

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