在Base64中编码的加密字符串在通过URL后没有保存吗？
“数据”String用Base64 (URL安全版本)编码，然后加密到byte array中。此byte array被转换为String并发送到REST web服务。当它到达web服务端时，String的长度发生了变化。我不是专家，我做错什么了？
守则：
//CLIENT SIDE
import org.apache.commons.codec.binary.Base64;
String data = "My message to be encrypted";
PublicKey pubKey = readPublicKeyFromFile();
Cipher cipher = Cipher.getInstance("RSA");
cipher.init(Cipher.ENCRYPT_MODE, pubKey);
byte[] encryptedData = cipher.doFinal(Base64.encodeBase64URLSafe(data.getBytes()));
System.out.println("length of original data string: " + data.length());
System.out.println("length of original data string turned into byte array: " + data.getBytes().length);
System.out.println("length of data string encrypted into byte array: " + encryptedData.length);
String encryptedDataToString = new String(encrypedData,"UTF-8");
System.out.println("length encrypted String into byte array, converted back to String for url: " + encryptedDataToString.length);
httpclient = new DefaultHttpClient();
builder = new URIBuilder();
builder.setScheme("http").setHost(xxx + "webresources/GetData/" + path)
.setParameter("data", encryptedDataToString);
uri = builder.build();
//SERVER SIDE
import org.apache.commons.codec.binary.Base64;
@GET
@Path("path")
@Produces("text/plain")
public String getToken(@QueryParam("data") String data) {
System.out.println("length of data: " + data.length());
System.out.println("length of data to byte array wthout decoding: " + data.getBytes().length);
System.out.println("length of data to byte decoded: " + Base64.decodeBase64(data).length);
//CONSOLE
//CLIENT SIDE
length of original data string: 37
length of original data string turned into byte array: 37
length of data string encrypted into byte array: 256
length encrypted String into byte array, converted back to String for url: 256
//SERVER SIDE
INFO: length of data: 237
INFO: length of data to byte wthout decoding: 444
INFO: length of data to byte decoded: 4在URL中显示的数据String，T%23%EF%BF%BD%0C%EF%BF%BD%EF%BF%BD7%EF%BF%BD%EF%BF%BDk%EF%BF%BDA%EF%BF%BD%10L%EF%BF%BD%EF%BF%BD%EF%BF%BD%14%EF%BF%BD%EF%BF%BD%5E%22%15B%1Ae%01%EF%BF%BDgmE%0C%EF%BF%BD%EF%BF%BDn%EF：客户端%BF%BD%3D%EF%BF%BD%EF%BF%BD%DC%80%EF%BF%BD%EF%BF%BDIM%EF%BF%BD%EF%BF%BD%EF%BF%BD%EF%BF%BDeM%EF%BF%BD5%EF%BF%BD%EF%BF%BD%26%EF%BF%BD%1E%7D%EF%BF%BDNAQ%EF%BF%BDlT%EF%BF%BD%EF%BF%BDVXR%EF%BF%BDi%0E%EF%BF%BD%EF%BF%BD%EF%BF%BD3U%0C%EF%BF%BD%EF%BF%BD%1E%EF%BF%BD%EF%BF%BD%0Fep%EF%BF%BD%C3%A1b6%EF%BF%BD%CE%B5y9x%EF%BF%BD%EF%BF%BD%0D%EF%BF%BD%EF%BF%BD%EF%BF%BD%EF%BF%BD%18%7C%06%21%EF%BF%BD0%EF%BF%BD%EF%BF%BD%EF%BF%BD%03%EF%BF%BD%17%CB%8F%7D%EF%BF%BD%26A%EF%BF%BD%12%EF%BF%BD%EF%BF%BD%EF%BF%BD-%DE%8D%EF%BF%BD%EF%BF%BD%EF%BF%BDt%EF%BF%BD%EF%BF%BD%EF%BF%BDTezs%EF%BF%BD%0C%EF%BF%BD%2C%EF%BF%BD%EF%BF%BD%EF%BF%BD%DD%94%EF%BF%BD%EF%BF%BD%EF%BF%BD%EF%BF%BD%EF%BF%BD%EF%BF%BD%19%EF%BF%BD%25%EF%BF%BDt%EF%BF%BDQ%EF%BF%BD%7D%EF%BF%BDF%EF%BF%BD%EF%BF%BD%EF%BF%BD%1An%EF%BF%BD+%EF%BF%BD%CF%86R%EF%BF%BDW%EF%BF%BDU%EF%BF%BDxo%EF%BF%BDd%EF%BF%BD%08-%3F%EF%BF%BD%2F%EF%BF%BD%5Bg%EF%BF%BD2%EF%BF%BD%EF%BF%BDk%5E%EF%BF%BDm%EF%BF%BD%EF%BF%BD%25%EF%BF%BD%EF%BF%BD*%07%5E%EF%BF%BD%EF%BF%BD%EF%BF%BD%EF%BF%BDU%EF%BF%BD%7F%EF%BF%BDP%EF%BF%BD%EF%BF%BD%EF%BF%BD%7B%07%EF%BF%BDO%EF%BF%BD%EF%BF%BD%11%CB%9C%EF%BF%BD%1Dk%EF%BF%BDkL8%EF%BF%BD*%EF%BF%BD%1D%EF%BF%BDl%EF%BF%BD 02%EF%BF%BD
接收到的数据String，服务器端
T#���7��k�A�L�����^"Be�gmE��n�=��܀��IM����eM�5��&�}�NAQ�lT��VXR�i���3U����ep�áb6�εy9x������|!�0����ˏ}�&A����-ލ���t���Tezs��，�φR�W�U�xo�d-?�/�[g�2��k^�m��%��^����U��P���{�O��˜�k�kL8���l���t�q�}�F���n��
(不确定这些字符是实际接收到的，还是控制台上打印得很差？)
回答 1
Stack Overflow用户
发布于 2014-05-24 08:39:18
您必须先加密它，然后用base64对其进行编码并通过网络发送。否则，加密会产生(Pseuro)随机数据，其中某些部分可能无法正确编码以便通过网络传输，并且不可避免地会被破坏。
如果要压缩数据，同样的情况也是如此。您在加密之前进行压缩，因为加密之后，算法将更难压缩看似随机的数据。
通常，发送到web服务的内容应该作为最后一步/修改进行base64编码。
https://stackoverflow.com/questions/23842969
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