2019-12-30-Java MD5加密(简陋方法)

```

import java.math.BigInteger;

import java.security.MessageDigest;

import java.security.NoSuchAlgorithmException;

public class Test01 {

//MD5加密程序

public String getMD5String(String str) {

//获取用户输入的某个字符串来进行加密运算，采用java自带的方式来进行加密

try {

//生成加密摘要

MessageDigest md5 = MessageDigest.getInstance("MD5");

md5.update(str.getBytes());

return new BigInteger(1, md5.digest()).toString(16);

} catch (NoSuchAlgorithmException e) {

// TODO Auto-generated catch block

e.printStackTrace();

return null;

}

}

public boolean judgeMD5(String user,String pass) {

String userMD5 = getMD5String(user);

String passMD5 = getMD5String(pass);

//与数据库查询出的数据进行对比

if(userMD5.equals("22cbd383bb473ee567d51ca2ce4cc677")&&passMD5.equals("21232f297a57a5a743894a0e4a801fc3"))

return true;

else

return false;

}

}

```