cn.gjing.http.UrlUtil Maven / Gradle / Ivy
package cn.gjing.http;
import org.apache.commons.lang.StringUtils;
import java.io.UnsupportedEncodingException;
import java.net.URLDecoder;
import java.net.URLEncoder;
import java.util.ArrayList;
import java.util.Comparator;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
/**
* @author Gjing
**/
public class UrlUtil {
/**
* 用户请求连接采用占位符的时候进行url和参数拼接,结果例子为: http://localhost:xx/test/2414/42daf
* @param url 请求地址
* @param params 参数
* @return string
*/
public static String append(String url,Object...params) {
StringBuilder builder = new StringBuilder(url);
if (url.indexOf("/", url.length() - 1) == -1) {
builder.append("/");
}
for (Object param : params) {
builder.append(param).append("/");
}
return builder.toString();
}
/**
* 参数按照字段名的Unicode码从小到大排序(字典序)
*
* @param paramMap 要排序的参数
* @param urlEncode 是否需要URLEncode,true:需要/false:不需要
* @param keyToLower 是否需要将Key转换为全小写 true:key转化成小写,false:不转化
* @return 排序后的参数字符串
*/
public static String paramUnicodeSort(Map paramMap, boolean urlEncode, boolean keyToLower) {
String buff;
try {
List> infoIds = new ArrayList<>(paramMap.entrySet());
// 对所有传入参数按照字段名的 ASCII 码从小到大排序(字典序)
infoIds.sort(Comparator.comparing(Map.Entry::getKey));
// 构造URL 键值对的格式
StringBuilder buf = new StringBuilder();
for (Map.Entry item : infoIds) {
if (!StringUtils.isEmpty(item.getKey())) {
String key = item.getKey();
String val = String.valueOf(item.getValue());
if (urlEncode) {
val = URLEncoder.encode(val, "UTF-8");
key = URLEncoder.encode(key, "UTF-8");
}
if (keyToLower) {
buf.append(key.toLowerCase()).append("=").append(val);
} else {
buf.append(key).append("=").append(val);
}
buf.append("&");
}
}
buff = buf.toString();
if (!StringUtils.isEmpty(buff)) {
buff = buff.substring(0, buff.length() - 1);
}
} catch (Exception e) {
e.printStackTrace();
return null;
}
return buff;
}
/**
* 将URL中的查询参数部分解析成键值对
*
* @param url 将url的参数转为map
* @return map
*/
public static Map toMap(String url) {
final Map queryPairs = new ConcurrentHashMap<>(16);
final String[] param = url.split("\\?");
if (param.length<1) {
return null;
}
final String[] pairs = param[1].split("&");
if (pairs.length<1) {
return null;
}
for (String pair : pairs) {
final int idx = pair.indexOf("=");
String key;
try {
key = idx > 0 ? URLDecoder.decode(pair.substring(0, idx), "UTF-8") : pair;
final String value = idx > 0 && pair.length() > idx + 1 ? URLDecoder.decode(pair.substring(idx + 1),
"UTF-8") : null;
if (!key.isEmpty()) {
queryPairs.put(key, value);
}
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
}
return queryPairs;
}
}
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