OpenUtil.java
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package com.cnlive.shenhe.utils;
import javax.servlet.ServletRequest;
import java.io.UnsupportedEncodingException;
import java.net.URLDecoder;
import java.net.URLEncoder;
import java.util.*;
/**
* @author Administrator
*/
public class OpenUtil {
/**
* 验证签名
* 用于服务端
*/
public static boolean validateSign(ServletRequest request, String spKey) {
return validateSign(request, spKey, null);
}
/**
* 验证签名
*/
private static boolean validateSign(ServletRequest request, String spKey, String... ignore) {
Map<String, String> map = getRequestParam(request);
String sign = map.get("sign");
map.remove("sign");
if (ignore != null) {
for (String key : ignore) {
map.remove(key);
}
}
map = order(map);
String str = mapJoin(map, false);
String mySign = SHA1.SHA1Digest(str + "&key=" + spKey).toUpperCase();
return mySign.equals(sign);
}
/**
* 生成get 请求 URL
*/
public static String buildURL(String url, Map<String, String> params, String spKey) {
Map<String, String> map = order(params);
if (map.containsKey("sign")) {
map.remove("sign");
}
String str = mapJoin(map, false);
String sign = SHA1.SHA1Digest(str + "&key=" + spKey).toUpperCase();
map.put("sign", sign);
return url + "?" + mapJoin(map, true);
}
/**
* 生成签名 sign
*/
public static String sign(Map<String, String> params, String spKey) {
Map<String, String> map = order(params);
if (map.containsKey("sign")) {
map.remove("sign");
}
String str = mapJoin(map, false);
return SHA1.SHA1Digest(str + "&key=" + spKey).toUpperCase();
}
/**
* 获取请求参数
*/
private static Map<String, String> getRequestParam(ServletRequest request) {
Map<String, String> map = new LinkedHashMap<>();
Map<String, String[]> map2 = request.getParameterMap();
for (String key : map2.keySet()) {
if (map2.get(key) == null || map2.get(key).length == 0) {
map.put(key, null);
} else {
try {
String value = URLDecoder.decode(map2.get(key)[0], "utf-8");
map.put(key, value);
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
}
}
return map;
}
/**
* 获取附加参数
*/
public static Map<String, String> getAttachParam(ServletRequest servletRequest, boolean attachKey) {
Map<String, String[]> maps = servletRequest.getParameterMap();
Map<String, String> map = new LinkedHashMap<String, String>();
for (String key : maps.keySet()) {
String[] vk = key.split("\\.");
if (vk.length == 2 && vk[0].equals("attach")) {
map.put(attachKey ? key : vk[1], maps.get(key)[0]);
}
}
return map;
}
/**
* url 参数串连
*/
private static String mapJoin(Map<String, String> map, boolean valueUrlencode) {
StringBuilder stringBuilder = new StringBuilder();
for (String key : map.keySet()) {
if (map.get(key) != null && !"".equals(map.get(key))) {
try {
stringBuilder.append(key)
.append("=")
.append(valueUrlencode ? URLEncoder.encode(map.get(key), "utf-8").replace("+", "%20") : map.get(key))
.append("&");
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
}
}
if (stringBuilder.length() > 0) {
stringBuilder.deleteCharAt(stringBuilder.length() - 1);
}
return stringBuilder.toString();
}
/**
* Map key 排序
*/
private static Map<String, String> order(Map<String, String> map) {
HashMap<String, String> tempMap = new LinkedHashMap<>();
List<Map.Entry<String, String>> infoIds = new ArrayList<>(map.entrySet());
infoIds.sort(new Comparator<Map.Entry<String, String>>() {
@Override
public int compare(Map.Entry<String, String> o1, Map.Entry<String, String> o2) {
return (o1.getKey()).compareTo(o2.getKey());
}
});
for (Map.Entry<String, String> item : infoIds) {
tempMap.put(item.getKey(), item.getValue());
}
return tempMap;
}
}