{ "name": "Alice", "age": 20, "address": { "city": "Beijing", "country": "China" } 此对象 用 java MD5 字典排序 签名
时间: 2023-12-03 22:40:06 浏览: 19
以下是Java中对该对象进行MD5字典排序签名的代码示例:
```java
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.*;
public class Main {
public static void main(String[] args) throws NoSuchAlgorithmException {
// 定义需要签名的对象
Map<String, Object> obj = new HashMap<>();
obj.put("name", "Alice");
obj.put("age", 20);
Map<String, Object> address = new HashMap<>();
address.put("city", "Beijing");
address.put("country", "China");
obj.put("address", address);
// 对对象进行字典排序
List<String> keys = new ArrayList<>(obj.keySet());
Collections.sort(keys);
StringBuilder sb = new StringBuilder();
for (String key : keys) {
sb.append(key).append("=").append(obj.get(key)).append("&");
}
sb.append("secretKey=yourSecretKey");
// 对排序后的字符串进行MD5签名
MessageDigest md5 = MessageDigest.getInstance("MD5");
byte[] digest = md5.digest(sb.toString().getBytes());
StringBuilder sign = new StringBuilder();
for (byte b : digest) {
sign.append(String.format("%02x", b & 0xff));
}
System.out.println(sign.toString());
}
}
```