相关疑难解决方法(0)

假设我在Java中有一个表达式,例如:

String s = "abc" + methodReturningAString() + "ghi" + 
                anotherMethodReturningAString() + "omn" + "blablabla";

Java的默认JDK编译器的行为是什么？它只是制作五个连接还是有智能性能技巧？

我根据Gigya 构建签名的说明编写了一个方法来验证指定时间戳和UID的gigya 签名.这是Gigya的psuedo代码:

string constructSignature(string timestamp, string UID, string secretKey) {
    // Construct a "base string" for signing
    baseString = timestamp + "_" + UID;
    // Convert the base string into a binary array
    binaryBaseString = ConvertUTF8ToBytes(baseString);
    // Convert secretKey from BASE64 to a binary array
    binaryKey = ConvertFromBase64ToBytes(secretKey);
    // Use the HMAC-SHA1 algorithm to calculate the signature 
    binarySignature = hmacsha1(binaryKey, baseString);
    // Convert the signature to a BASE64
    signature = ConvertToBase64(binarySignature);
    return signature; …