Java Utililty Methods URL Parameter Builder

List of utility methods to do URL Parameter Builder

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Description

The list of methods to do URL Parameter Builder are organized into topic(s).

Method

MapgetURLParameters(URI uri)
get URL Parameters 
if (uri == null) {
    return null;
String query = uri.getQuery();
if (query == null) {
    return null;
Map parameters = new HashMap();
...
Stringmap2String(Map params)
map String 
int count = 0;
StringBuilder builder = new StringBuilder();
for (Entry<String, String> entry : params.entrySet()) {
    if (count > 0) {
        builder.append("&");
    builder.append(entry.getKey());
    builder.append("=");
...
StringmapToFormEncodedString(Map data)
map To Form Encoded String 
final List<String> acc = new ArrayList<String>();
for (Map.Entry<String, String> entry : data.entrySet()) {
    acc.add(encodeURIComponent(entry.getKey()) + "=" + encodeURIComponent(entry.getValue()));
return "?" + join(acc, "&");
StringmapToFormString(Map map)
map To Form String 
StringBuilder postDataStringBuilder = new StringBuilder();
String postDataString;
try {
    for (Map.Entry<String, String> entry : map.entrySet()) {
        postDataStringBuilder.append(URLEncoder.encode(entry.getKey(), "UTF-8")).append("=")
                .append(URLEncoder.encode(entry.getValue(), "UTF-8")).append("&");
} catch (Exception e) {
...
StringmapToStr(Map map)
Creates an encoded String from a Map of name/value pairs (MUST BE STRINGS!) 
if (map == null)
    return null;
StringBuilder buf = new StringBuilder();
boolean first = true;
for (Map.Entry<? extends Object, ? extends Object> entry : map.entrySet()) {
    Object key = entry.getKey();
    Object value = entry.getValue();
    if (!(key instanceof String) || !(value instanceof String))
...
StringmapToStr(Map map)
Creates an encoded String from a Map of name/value pairs (MUST BE STRINGS!) 
if (map == null)
    return null;
StringBuffer buf = new StringBuffer();
Set<String> keySet = map.keySet();
Iterator<String> i = keySet.iterator();
boolean first = true;
while (i.hasNext()) {
    Object key = i.next();
...
StringmapToString(Map map)
map To String 
StringBuilder stringBuilder = new StringBuilder();
for (String key : map.keySet()) {
    if (stringBuilder.length() > 0) {
        stringBuilder.append("&");
    String value = map.get(key);
    try {
        stringBuilder.append((key != null ? URLEncoder.encode(key, "UTF-8") : ""));
...
voidparse(final Map> parameters, final Scanner scanner, final String encoding)
Adds all parameters within the Scanner to the list of parameters, as encoded by encoding. 
scanner.useDelimiter(PARAMETER_SEPARATOR);
while (scanner.hasNext()) {
    final String[] nameValue = scanner.next().split(NAME_VALUE_SEPARATOR);
    if (nameValue.length == 0 || nameValue.length > 2)
        throw new IllegalArgumentException("bad parameter");
    final String name = decode(nameValue[0], encoding);
    String value = null;
    if (nameValue.length == 2)
...
Map>parse_parameters(String input)
parsparameters 
final Map<String, List<String>> query_pairs = new LinkedHashMap<String, List<String>>();
final String[] pairs = input.split("&");
for (String pair : pairs) {
    final int idx = pair.indexOf("=");
    final String key = idx > 0 ? URLDecoder.decode(pair.substring(0, idx), "UTF-8") : pair;
    if (!query_pairs.containsKey(key)) {
        query_pairs.put(key, new LinkedList<String>());
    final String value = idx > 0 && pair.length() > idx + 1
            ? URLDecoder.decode(pair.substring(idx + 1), "UTF-8")
            : null;
    query_pairs.get(key).add(value);
return query_pairs;
voidparseGetParameters(HttpExchange exchange)
parse Get Parameters 
Map<String, Object> parameters = new HashMap<String, Object>();
URI requestedUri = exchange.getRequestURI();
String query = requestedUri.getRawQuery();
parseQuery(query, parameters);
exchange.setAttribute("parameters", parameters);