Example usage for javax.servlet ServletRequest getParameterNames

Introduction

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

Prototype

public Enumeration<String> getParameterNames();

Source Link

Document

Returns an Enumeration of String objects containing the names of the parameters contained in this request.

Usage

From source file:org.pushio.datacenter.ctrl.util.Servlets.java

/**
 * ???Request Parameters, copy from spring WebUtils.
 * /*  w  w  w. j a  va  2  s  . co m*/
 * Parameter???.
 */
public static Map<String, Object> getParametersStartingWith(ServletRequest request, String prefix) {
    Validate.notNull(request, "Request must not be null");
    Enumeration paramNames = request.getParameterNames();
    Map<String, Object> params = new TreeMap<String, Object>();
    if (prefix == null) {
        prefix = "";
    }
    if ((paramNames != null)) {
        while (paramNames.hasMoreElements()) {
            String paramName = (String) 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.eastteam.myprogram.web.Servlets.java

/**
 * ???Request Parameters, copy from spring WebUtils.
 * /*  ww  w  . ja v  a2 s  .c  o m*/
 * Parameter???.
 */
public static Map<String, Object> getParametersStartingWith(ServletRequest request, String prefix) {
    Validate.notNull(request, "Request must not be null");
    Enumeration paramNames = request.getParameterNames();
    Map<String, Object> params = new TreeMap<String, Object>();
    if (prefix == null) {
        prefix = "";
    }
    while ((paramNames != null) && paramNames.hasMoreElements()) {
        String paramName = (String) 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 if (StringUtils.isNotBlank(values[0])) {
                params.put(unprefixed, values[0].trim());
            }
            if (unprefixed.startsWith("categoryId") && values != null) {
                params.put("categoryIdList", values);
            }
        }
    }
    return params;
}

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From source file:cn.com.qiqi.order.utils.Servlets.java

/**
 * ???Request Parameters, copy from spring WebUtils.
 * /*from w ww.  ja va2  s  .  c om*/
 * Parameter???.
 */
@SuppressWarnings("rawtypes")
public static Map<String, Object> getParametersStartingWith(ServletRequest request, String prefix) {
    Validate.notNull(request, "Request must not be null");
    Enumeration paramNames = request.getParameterNames();
    Map<String, Object> params = new TreeMap<String, Object>();
    if (prefix == null) {
        prefix = "";
    }
    while (paramNames != null && paramNames.hasMoreElements()) {
        String paramName = (String) 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;
}

---

From source file:com.zhumeng.dream.util.servlet.ServletUtils.java

/**
 * ???Request Parameters./*www .j  a  v a  2  s.  c o  m*/
 * 
 * Parameter???.
 */
@SuppressWarnings("unchecked")
public static List<String> getParametersKeyStartingWith(ServletRequest request, String prefix) {
    Assert.notNull(request, "Request must not be null");
    Enumeration paramNames = request.getParameterNames();
    List<String> keys = Lists.newArrayList();
    if (prefix == null) {
        prefix = "";
    }
    while (paramNames != null && paramNames.hasMoreElements()) {
        String paramName = (String) paramNames.nextElement();
        String[] values = request.getParameterValues(paramName);
        if (values == null || values.length == 0) {
            continue;
        } else if (values.length == 1) {
            if (StringUtils.isBlank(values[0]))
                continue;
        } else {

        }

        if ("".equals(prefix) || paramName.startsWith(prefix)) {
            String unprefixed = paramName.substring(prefix.length());
            keys.add(unprefixed);
        }
    }
    return keys;
}

---

From source file:com.sobey.framework.utils.Servlets.java

/**
 * ???Request Parameters, copy from spring WebUtils.
 * /*from w w  w .  j a v  a  2s  .c o m*/
 * Parameter???.
 */
@SuppressWarnings("rawtypes")
public static Map<String, Object> getParametersStartingWith(ServletRequest request, String prefix) {
    Validate.notNull(request, "Request must not be null");
    Enumeration paramNames = request.getParameterNames();
    Map<String, Object> params = new TreeMap<String, Object>();
    if (prefix == null) {
        prefix = "";
    }
    while (paramNames != null && paramNames.hasMoreElements()) {
        String paramName = (String) 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;
}

---

From source file:net.turnbig.pandora.web.Servlets.java

/**
 * ???Request Parameters, copy from spring WebUtils.
 * /*from  w ww  . ja  v a2 s. c o  m*/
 * Parameter???.
 */
public static Map<String, Object> getParametersStartingWith(ServletRequest request, String prefix) {
    Enumeration paramNames = request.getParameterNames();
    Map<String, Object> params = new TreeMap<String, Object>();

    String prefix_ = prefix == null ? "" : prefix;
    while ((paramNames != null) && paramNames.hasMoreElements()) {
        String paramName = (String) 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;
}

---

From source file:org.itboys.commons.utils.servlet.Servlets.java

/**
 * ???Request Parameters, copy from spring.
 * //  w w  w .java2 s.  c  om
 * Parameter???.
 * 
 * m2
 */
@SuppressWarnings({ "rawtypes" })
public static Map<String, Object> getParametersStartingWith(ServletRequest request, String prefix) {
    Validate.notNull(request, "Request must not be null");
    Enumeration paramNames = request.getParameterNames();
    Map<String, Object> params = new HashMap<String, Object>();
    if (prefix == null) {
        prefix = "";
    }
    while (paramNames != null && paramNames.hasMoreElements()) {
        String paramName = (String) 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;
}

---

From source file:com.mxep.web.web.Servlets.java

/**
 * ???Request Parameters, copy from spring WebUtils.
 * <p>/*from  w  ww  . j av a 2 s.  c  o  m*/
 * Parameter???.
 */
public static Map<String, Object> getParametersStartingWith(ServletRequest request, String prefix) {
    Validate.notNull(request, "Request must not be null");
    Enumeration paramNames = request.getParameterNames();
    Map<String, Object> params = new TreeMap<String, Object>();
    if (prefix == null) {
        prefix = "";
    }
    while ((paramNames != null) && paramNames.hasMoreElements()) {
        String paramName = (String) 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]);
            }
        }
        //           else {
        //                params.put(paramName, request.getParameter(paramName));
        //            }
    }
    return params;
}

---

From source file:com.gmail.sretof.web.ServletUtils.java

/**
 * ???Request Parameters, copy from spring WebUtils.
 * // www.  j a v a2 s.  c o m
 * Parameter???.
 */
public static Map<String, Object> getParametersStartingWith(ServletRequest request, String prefix) {
    Validate.notNull(request, "Request must not be null");
    @SuppressWarnings("rawtypes")
    Enumeration paramNames = request.getParameterNames();
    Map<String, Object> params = new TreeMap<String, Object>();
    if (prefix == null) {
        prefix = "";
    }
    while (paramNames != null && paramNames.hasMoreElements()) {
        String paramName = (String) 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;
}

---

From source file:com.redhat.rhn.common.util.ServletUtils.java

/**
 * Creates a encoded URL query string with the parameters from the given request. If the
 * request is a GET, then the returned query string will simply consist of the query
 * string from the request. If the request is a POST, the returned query string will
 * consist of the form variables./*  w  w w.  j a  va2 s .  co  m*/
 *
 * <br/><br/>
 *
 * <strong>Note</strong>: This method does not support multi-value parameters.
 *
 * @param request The request for which the query string will be generated.
 *
 * @return An encoded URL query string with the parameters from the given request.
 */
public static String requestParamsToQueryString(ServletRequest request) {

    StringBuffer queryString = new StringBuffer();

    String paramName = null;
    String paramValue = null;

    Enumeration paramNames = request.getParameterNames();

    while (paramNames.hasMoreElements()) {
        paramName = (String) paramNames.nextElement();
        paramValue = request.getParameter(paramName);

        queryString.append(encode(paramName)).append("=").append(encode(paramValue)).append("&");
    }

    if (endsWith(queryString, '&')) {
        queryString.deleteCharAt(queryString.length() - 1);
    }

    return queryString.toString();
}

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