package?com.weixin.util;

import?java.io.UnsupportedEncodingException;
import?java.security.MessageDigest;
import?java.security.NoSuchAlgorithmException;
import?java.util.Arrays;

public?class?CheckUtil?{
	private?static?final?String?token?=?"Imooc";

	public?static?boolean?checkSignature(String?signature,?String?timestamp,?String?nonce)?{
		String[]?args?=?new?String[]?{?token,?timestamp,?nonce?};
		Arrays.sort(args);

		StringBuffer?content?=?new?StringBuffer();
		for?(int?i?=?0;?i?<?args.length;?i++)?{
			content.append(args[i]);
		}
		//?加密
		String?temp?=?getSha1(content.toString());
		return?temp.equals(signature);
	}

	public?static?String?getSha1(String?str)?{
		if?(str?==?null?||?str.length()?==?0)?{
			return?null;
		}
		char?hexDigits[]?=?{?'0',?'1',?'2',?'3',?'4',?'5',?'6',?'7',?'8',?'9',?'a',?'b',?'c',?'d',?'e',?'f'?};
		try?{
			MessageDigest?mdTemp?=?MessageDigest.getInstance("SHA1");
			mdTemp.update(str.getBytes("UTF-8"));
			byte[]?md?=?mdTemp.digest();
			int?j?=?md.length;
			char?buf[]?=?new?char[j?*?2];
			int?k?=?0;
			for?(int?i?=?0;?i?<?j;?i++)?{
				byte?byte0?=?md[i];
				buf[k++]?=?hexDigits[byte0?>>>?4?&?0xf];
				buf[k++]?=?hexDigits[byte0?&?0xf];
			}
			return?new?String(buf);
		}?catch?(NoSuchAlgorithmException?e)?{
			//?TODO?Auto-generated?catch?block
			e.printStackTrace();
		}?catch?(UnsupportedEncodingException?e)?{
			//?TODO?Auto-generated?catch?block
			e.printStackTrace();
		}
		return?null;

	}
}

老師這里面的代碼哪里錯了，綁定微信公眾號時，老是報token錯誤，我token確定是一直的，加密后的值與signature我debug查看是不一致的，但我對照你的代碼，看不錯問題