using Apache Commons
需要引入org.apache.commons.codec.digest.DigestUtils这个包，pom.xml文件配置如下：
<!-- https://mvnrepository.com/artifact/commons-codec/commons-codec -->
<dependency>
<groupId>commons-codec</groupId>
<artifactId>commons-codec</artifactId>
<version>1.10</version>
</dependency>
demo代码如下：
@Test
public void givenPassword_whenHashingUsingCommons_thenVerifying() {
String hash = "35454B055CC325EA1AF2126E27707052";
String password = "ILoveJava"; String md5Hex = DigestUtils
.md5Hex(password).toUpperCase(); assertThat(md5Hex.equals(hash)).isTrue();
}
MD5 Using MessageDigest Class
jdk自带的，in java.security.MessageDigest Class
demo代码如下：
@Test
public void givenPassword_whenHashing_thenVerifying()
throws NoSuchAlgorithmException {
String hash = "35454B055CC325EA1AF2126E27707052";
String password = "ILoveJava"; MessageDigest md = MessageDigest.getInstance("MD5");
md.update(password.getBytes());
byte[] digest = md.digest();
String myHash = DatatypeConverter
.printHexBinary(digest).toUpperCase(); assertThat(myHash.equals(hash)).isTrue();
}