JAva url requestパラメータ解析クラス
3398 ワード
httpclientは1つを提供して、悲劇的なのはダウンロードすることができなくて、そのコードに従って書くしかなくて、自分で少し拡張しました:
呼び出しも簡単です.
package com.yunzu.jsoup;
import java.io.UnsupportedEncodingException;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URLDecoder;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Scanner;
import org.apache.commons.httpclient.NameValuePair;
public class URLEncodedUtils {
private static final String PARAMETER_SEPARATOR = "&";
private static final String NAME_VALUE_SEPARATOR = "=";
public static final String DEFAULT_CONTENT_CHARSET = "ISO-8859-1";
/*
* assume each name is unique
*/
public static String getParameter(final String url, final String encoding,
final String name) throws URISyntaxException {
Map<String, String> mapparams = new HashMap<String, String>();
List<NameValuePair> params = URLEncodedUtils.parse(new URI(url), "UTF-8");
for (NameValuePair param : params) {
mapparams.put(param.getName(), param.getValue());
}
return mapparams.get(name);
}
public static List<NameValuePair> parse(final URI uri, final String encoding) {
List<NameValuePair> result = Collections.emptyList();
final String query = uri.getRawQuery();
if (query != null && query.length() > 0) {
result = new ArrayList<NameValuePair>();
parse(result, new Scanner(query), encoding);
}
return result;
}
public static void parse(final List<NameValuePair> parameters,
final Scanner scanner, final String 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)
value = decode(nameValue[1], encoding);
parameters.add(new NameValuePair(name, value));
}
}
private static String decode(final String content, final String encoding) {
try {
return URLDecoder.decode(content, encoding != null ? encoding
: DEFAULT_CONTENT_CHARSET);
} catch (UnsupportedEncodingException problem) {
throw new IllegalArgumentException(problem);
}
}
}
呼び出しも簡単です.
String sUrl = "http://book.sina.cn/prog/wapsite/books/h5/vipc.php?bid=217269&cid=293500&cp=1&sort=asc&PHPSESSID=0cbd7d80b00593b0b3d446bd97d781ab&vt=4&book_explore=1";
List<NameValuePair> params;
try {
params = URLEncodedUtils.parse(new URI(sUrl), "UTF-8");
for (NameValuePair param : params) {
System.out.println(param.getName() + " : " + param.getValue());
}
} catch (URISyntaxException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
System.out.println("getparameter begin.........");
try {
System.out.println(URLEncodedUtils.getParameter(sUrl, "UTF-8", "bid"));
} catch (URISyntaxException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
System.out.println("getparameter end.........");