我正在使用下面的代码，但它不起作用。
String source = "password";
byte[] byteArray = source.getBytes("UTF-16");
Base64 bs = new Base64();
//bs.encodeBytes(byteArray);
System.out.println(bs.encodeBytes(byteArray));
//bs.decode(bs.encodeBytes(byteArray));
System.out.println(bs.decode(bs.encodeBytes(byteArray)));
当前回答
“java.util。类提供了以Base64格式编码和解码信息的功能。
如何获得Base64编码器?
Encoder encoder = Base64.getEncoder();
如何获得Base64解码器?
Decoder decoder = Base64.getDecoder();
如何对数据进行编码?
Encoder encoder = Base64.getEncoder();
String originalData = "java";
byte[] encodedBytes = encoder.encode(originalData.getBytes());
如何解码数据?
Decoder decoder = Base64.getDecoder();
byte[] decodedBytes = decoder.decode(encodedBytes);
String decodedStr = new String(decodedBytes);
你可以在这个链接得到更多细节。
其他回答
对于Kotlin mb更好的使用:
fun String.decode(): String {
return Base64.decode(this, Base64.DEFAULT).toString(charset("UTF-8"))
}
fun String.encode(): String {
return Base64.encodeToString(this.toByteArray(charset("UTF-8")), Base64.DEFAULT)
}
例子:
Log.d("LOGIN", "TEST")
Log.d("LOGIN", "TEST".encode())
Log.d("LOGIN", "TEST".encode().decode())
基于之前的答案，我使用以下实用程序方法，以防有人想使用它。
/**
* @param message the message to be encoded
*
* @return the enooded from of the message
*/
public static String toBase64(String message) {
byte[] data;
try {
data = message.getBytes("UTF-8");
String base64Sms = Base64.encodeToString(data, Base64.DEFAULT);
return base64Sms;
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
return null;
}
/**
* @param message the encoded message
*
* @return the decoded message
*/
public static String fromBase64(String message) {
byte[] data = Base64.decode(message, Base64.DEFAULT);
try {
return new String(data, "UTF-8");
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
return null;
}
package net.itempire.virtualapp;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Base64;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;
public class BaseActivity extends AppCompatActivity {
EditText editText;
TextView textView;
TextView textView2;
TextView textView3;
TextView textView4;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_base);
editText=(EditText)findViewById(R.id.edt);
textView=(TextView) findViewById(R.id.tv1);
textView2=(TextView) findViewById(R.id.tv2);
textView3=(TextView) findViewById(R.id.tv3);
textView4=(TextView) findViewById(R.id.tv4);
textView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
textView2.setText(Base64.encodeToString(editText.getText().toString().getBytes(),Base64.DEFAULT));
}
});
textView3.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
textView4.setText(new String(Base64.decode(textView2.getText().toString(),Base64.DEFAULT)));
}
});
}
}
26级火警
String encodedString = Base64.getEncoder().encodeToString(byteArray);
裁判: https://developer.android.com/reference/java/util/Base64.Encoder.html encodeToString (byte [])
类似的
String source = "password";
byte[] byteArray;
try {
byteArray = source.getBytes("UTF-16");
System.out.println(new String(Base64.decode(Base64.encode(byteArray,
Base64.DEFAULT), Base64.DEFAULT)));
} catch (UnsupportedEncodingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
