md5加密

web

# com.pollux.md5.md5.java

package com.pollux.md5;
public interface md5 {
    public String getmd5(String name, String password);
}

# com.pollux.md5.md5impl.java

package com.pollux.md5;
import java.security.MessageDigest;
import org.springframework.stereotype.Service;
@Service("md5")
public class md5impl implements md5 {
    public String getmd5(String name, String password) {
        // TODO Auto-generated method stub
//          long time = System.currentTimeMillis();
            char hexDigits[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };
            try {
                String salt = "Pollux";
                String addsalt = password + name + salt;
                byte[] btinput = addsalt.getBytes();
                MessageDigest mdInst = MessageDigest.getInstance("MD5");
                mdInst.update(btinput);
                byte[] md = mdInst.digest();
                int j = md.length;
                char str[] = new char[j * 2];
                int k = 0;
                for (int i = 0; i < j; i++) {
                    byte byte0 = md[i];
                    str[k++] = hexDigits[byte0 >>> 4 & 0xf];
                    str[k++] = hexDigits[byte0 & 0xf];
                }
//              long timenow = System.currentTimeMillis();
//              System.out.println(timenow-time);
                String result = new String(str);
                String finalstring = result.substring(5,result.length()-3);
                return finalstring;
            } catch (Exception e) {
                e.printStackTrace();
                return null;
            }   
    }
}

# com.pollux.controller.Testmd5

package com.pollux.controller;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import com.pollux.md5.md5;
@Controller
public class Testmd5 {
    @Autowired
    private md5 md5;
    @ResponseBody
    @RequestMapping(value = "/md5")
    public String md5(String username,String password){
        return md5.getmd5(username, password);
    }
}