feat: bili_ticket 算法 Java 实现 及 信息补充 及 错误修正 (#1061)

* feat: 空间头图及拼写错误修正

* feat(fav/info.md): code 11010

* fix(misc/sign/wbi.md): java extra params

* feat(misc/sign/bili_ticket.md): description and java demo

* feat(video_ranking/dynamic.md): 分区视频相关接口

* fix(video_ranking/dynamic.md): 未关闭的标签

* feat(README.md): 补充链接

* feat(clientinfo/ip.md): 查询任意 IP 地址的归属地

* feat: get buvid3 buvid4 from api

* feat: new error code & format

* feat(misc/picture.md): 图片格式化更多规则

docs/misc/bvid_desc.md

@@ -248,10 +248,9 @@ print(av2bv(avid: 111298867365120))
 print(bv2av(bvid: "BV1L9Uoa9EUx"))
 ```
 
-
 ### Java
 
-```
+```java
 import java.math.BigInteger;
 
 /**
@@ -266,8 +265,7 @@ public class AVBVConverter {
 
     private static final String DATA = "FcwAPNKTMug3GV5Lj7EJnHpWsx4tb8haYeviqBz6rkCy12mUSDQX9RdoZf";
 
-    public static String av2bv(int aidParam) {
-
+    public static String av2bv(long aidParam) {
         BigInteger aid = BigInteger.valueOf(aidParam);
         char[] bytes = {'B', 'V', '1', '0', '0', '0', '0', '0', '0', '0', '0', '0'};
         int bvIndex = bytes.length - 1;
@@ -275,18 +273,14 @@ public class AVBVConverter {
         while (tmp.compareTo(BigInteger.ZERO) > 0) {
             bytes[bvIndex] = DATA.charAt(tmp.mod(BigInteger.valueOf(BASE)).intValue());
             tmp = tmp.divide(BigInteger.valueOf(BASE));
-            bvIndex -= 1;
+            bvIndex--;
         }
         swap(bytes, 3, 9);
         swap(bytes, 4, 7);
-        StringBuilder sb = new StringBuilder(bytes.length);
-        for (Character ch : bytes) {
-            sb.append(ch);
-        }
-        return sb.toString();
+        return new String(bytes);
     }
 
-    public static int bv2av(String bvid) {
+    public static long bv2av(String bvid) {
         char[] bvidArr = bvid.toCharArray();
         swap(bvidArr, 3, 9);
         swap(bvidArr, 4, 7);
@@ -296,7 +290,7 @@ public class AVBVConverter {
             tmp = tmp.multiply(BigInteger.valueOf(BASE)).add(BigInteger.valueOf(DATA.indexOf(c)));
         }
         BigInteger xor = tmp.and(MASK_CODE).xor(XOR_CODE);
-        return xor.intValue();
+        return xor.longValue();
     }
 
 
@@ -314,21 +308,17 @@ public class AVBVConverter {
         final int aid2 = 305988942;
         final String bv2 = "BV1aP411K7it";
 
-
         //av ==> bv
         assert av2bv(aid1).equals(bv1);
         assert av2bv(aid2).equals(bv2);
 
-
         //bv ==>av
         assert bv2av(bv1) == aid1;
         assert bv2av(bv2) == aid2;
     }
 }
-
 ```
 
-
 ### Golang
 
 ```go