微信js-sdk调用

 1 public static String signatureSHA1(Map<String, String> map) {
 2  
 3 Set<String> keySet = map.keySet();
 4  
 5 String[] str = new String[map.size()];
 6  
 7 StringBuilder tmp = new StringBuilder();
 8  
 9 // 进行字典排序
10  
11 str = keySet.toArray(str);
12  
13 Arrays.sort(str);
14  
15 for (int i = 0; i < str.length; i++) {
16  
17 String t = str[i] + "=" + map.get(str[i]) + "&";
18  
19 tmp.append(t);
20  
21 }
22  
23 String tosend = tmp.toString().substring(0, tmp.length() - 1);
24  
25 MessageDigest md = null;
26  
27 byte[] bytes = null;
28  
29 try {
30  
31 md = MessageDigest.getInstance("SHA-1");
32  
33 bytes = md.digest(tosend.getBytes("utf-8"));
34  
35 } catch (Exception e) {
36  
37 e.printStackTrace();
38  
39 }
40  
41 String singe = byteToStr(bytes);
42  
43 return singe.toLowerCase();
44  
45 }