javascript：字符串到字节[] 到字符串
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/17720394/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
javascript: String to Byte[] to String
提问by Riahi
I coded my application in java in a first time and I should now coded it in javascript and I have some problems in the handling of string and arraybytes in javascript and recoding methods of conversion in both directions. Here is my java code:
我第一次用 java 编码我的应用程序，我现在应该用 javascript 编码它，我在处理 javascript 中的字符串和数组字节以及重新编码双向转换方法时遇到了一些问题。这是我的Java代码：
public String VerifyPIN(String PIN, String successCb, String errorCb) {
byte[] AID = new byte[] {(byte)0xA0,(byte)0x00,(byte)0x00,(byte)0x00,(byte)0x04,(byte)0x10,(byte)0x10,(byte)0x11};
byte[] tmpPIN = new byte[] {(byte)0x00, (byte)0x20, (byte)0x00, (byte)0x80, (byte)0x08, (byte)0x00, (byte)0x00, (byte)0x00, (byte)0x00, (byte)0x00, (byte)0x00, (byte)0x00, (byte)0x00};
System.arraycopy(PIN.getBytes(), 0, tmpPIN, 5, PIN.getBytes().length);
byte[] output = exchange(AID, tmpPIN);
String result = StringUtils.bytesToString(output);
if ("90 00".equals(result.trim())) {
//onSuccess()
} else {
//onError
}
return result.trim();
}
public String bytesToString(byte[] bytes) {
if (bytes != null)
{
StringBuffer sb = new StringBuffer();
for (byte b : bytes) {
sb.append(String.format("%02x ", b & 0xFF));
}
return sb.toString();
}
else {
return "N/A";
}
}
So how can I convert these two methods bytesToStringand VerifyPINto javascript.
那么如何将这两种方法bytesToString和VerifyPIN转换为javascript。
thank you in advance
先感谢您
回答by vipulsharma
You can use
您可以使用
function string2Bin(str) {
var result = [];
for (var i = 0; i < str.length; i++) {
result.push(str.charCodeAt(i));
}
return result;
}
function bin2String(array) {
return String.fromCharCode.apply(String, array);
}
string2Bin('foo'); // [102, 111, 111]
bin2String(string2Bin('foo')) === 'foo'; // true
Good luck
祝你好运
回答by Akram Fares
For the second method, here is the conversion:
对于第二种方法，这里是转换：
function bytesToString(bytes) {
var result = "";
for (var i = 0; i < bytes.length; i++) {
result += String.fromCharCode(parseInt(bytes[i], 2));
}
return result;
}
