[英]Encoding a PDF to Base64 in Java, decoding in PL/SQL: doesn't work
[英]Java Base64 Decoding/Encoding rountrip doesn't come up with same result
import org.junit.Test;
import java.util.Base64;
import org.junit.Assert.*;
import java.util.Random;
...
@Test
public void testEncoding(){
byte[] data = new byte[32];
new Random().nextBytes(data);
String base64 = Base64.getEncoder().encodeToString(data);
assertEquals(data, Base64.getDecoder().decode(base64));
}
@Test
public void testDecoding(){
String base64 = "ABCDEFGHIJKLRMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/A==";
byte[] data = Base64.getDecoder().decode(base64);
assertEquals(base64, Base64.getEncoder().encodeToString(data));
}
testEncoding測試失敗,並出現AssertionError:預期:[B @ 6bf2d08e實際:[B @ 5eb5c224而且我不知道為什么。
缺陷在於代碼中沒有斷言。
assertEquals將比較字節數組在內存中的地址assertArrayEquals將比較字節數組的內容
嘗試這個。 您應該編碼一個普通的String,然后解碼一個普通的String,而不是字節數組:
@Test
public void verify() throws Exception {
String normalString = "ABCDEFGHIJKLRMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/A==";
byte[] asBytes = normalString.getBytes();
String encoded = Base64.getEncoder().encodeToString(asBytes);
byte[] decodedBytes = Base64.getDecoder().decode(encoded);
String decoded = new String(decodedBytes);
assertEquals(normalString , decoded);
}
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