简单的MD5加密

1.MD5加密的工具类

public final class MD5Encode {

    public static String getMD5(String source){

        return getMD5(source.getBytes());

    }

public  static String getMD5(byte[] in) {

    String result =null;

    try {

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

        StringBuilder sbu =new StringBuilder();

        byte[] out = md5.digest(in);

        for (byte b : out) {

            int o = b &0xFF;

            if (o <16) {

                sbu.append("0");

            }

            sbu.append(Integer.toHexString(o));

        }

    result = sbu.toString().toUpperCase();

    }catch (NoSuchAlgorithmException e) {

        e.printStackTrace();

    }

    return result;

    }

}

2.Controller类

@Controller

public class IndexController {

    @RequestMapping("md5encode")

    public String toIndex(){

        return "encode";

    }

@GetMapping("encode")

@ResponseBody

    public String  encode(HttpServletRequest request){

        String s=request.getParameter("input");

        String result= MD5Encode.getMD5(s);

        return result;

    }

}

3.jsp文件（encode.jsp）

<%@ page contentType="text/html;charset=UTF-8" language="java" %>

加密

4.结果