針對三種Base64實現:java
* 自已實現的apache
* JDK8的java.util.Base64性能
* apache-common的org.apache.commons.codec.binary.Base64測試
/** * 用於命令行調用 * * @throws Exception */ public static void main(String[] args) throws Exception { byte[] binaryData = "這是一個小小的測試 this is a test only".getBytes(); long t1 = System.currentTimeMillis(); for (int i = 0; i < 10000 * 1000; i++) Base64.decode(Base64.encode(binaryData)); long t2 = System.currentTimeMillis(); Encoder encoder = java.util.Base64.getEncoder(); Decoder decoder = java.util.Base64.getDecoder(); for (int i = 0; i < 10000 * 1000; i++) decoder.decode(encoder.encodeToString(binaryData)); long t3 = System.currentTimeMillis(); for (int i = 0; i < 10000 * 1000; i++) org.apache.commons.codec.binary.Base64.decodeBase64(org.apache.commons.codec.binary.Base64.encodeBase64String(binaryData)); long t4 = System.currentTimeMillis(); System.out.println("t2-t1:"+(t2-t1)); System.out.println("t3-t2:"+(t3-t2)); System.out.println("t4-t3:"+(t4-t3)); }
測試結果:this
t2-t1:7871 #本身實現的
t3-t2:2820 #JDK8自帶的
t4-t3:25142 #apache-common的命令行
不要太相信apache-common的性能。code