WebService的用户控制方式与加密算法分类的整理

@service 
@transactional 
@webservice(endpointinterface = "com.mycompany.sms.ws.smsservice", targetnamespace = "http://www.mycompany.cn/sms", servicename = "serviceinstance") 
public class smsserviceimpl implements smsservice { 
 
  private secretkey secretkey; 
 
  @autowired 
  private sessionmanager sessionmanager; 
 
  // 将十六进制数字字符串转成字节流【保持16位】 
  private string hexstr = "3243456789123459"; 
 
  public smsserviceimpl() { 
    byte[] hex = securityhelper.hexstrtobyte(hexstr); 
    secretkey = new secretkeyspec(hex, "des"); 
  } 
 
  @override 
  public string login(string account, string password) { 
    user user = sessionmanager.login(secretkey, account, password); 
    return user.getsessionid(); 
  } 
 
  @override 
  public void logoff(string sessionid) { 
    sessionmanager.logoff(sessionid); 
  } 
 
  @override 
  public boolean sendmessage(string sessionid, string msgnumber, 
      string msgcontent) { 
    sessionmanager.getuser(secretkey, sessionid); 
    do something...; 
    return true; 
  } 
} 

@component 
public class sessionmanager { 
 
  @autowired 
  private cacheprovider cacheprovider; 
 
  public user login(secretkey secretkey, string account, string password) { 
    securityhelper securityhelper = new securityhelper(secretkey); 
    string password2; 
    try { 
      password2 = securityhelper.bytetohexstr(securityhelper 
          .encode(account.getbytes("utf-8"))); 
    } catch (unsupportedencodingexception e) { 
      throw new loginexception(e); 
    } 
    if (password2.equals(password)) { 
      user user = new user(account); 
      user.setsecretkey(secretkey.getencoded()); 
      addsession(user); 
      return user; 
    } else { 
      throw new loginexception("登录失败"); 
    } 
  } 
 
  public void logoff(string sessionid) { 
    removesession(sessionid); 
  } 
 
  private void addsession(user user) { 
    cacheprovider.put("webservice-session-" + user.getsessionid(), user); 
  } 
 
  private void removesession(string sessionid) { 
    cacheprovider.remove("webservice-session-" + sessionid); 
  } 
 
  public user getuser(secretkey secretkey, string sessionid) { 
    user user = (user) cacheprovider.get("webservice-session-" + sessionid); 
    if (user == null) { 
      throw new wsexception("用户未登录或登录超时"); 
    } else if (!bytesequals(secretkey.getencoded(), user.getsecretkey())) { 
      throw new wsexception("没有调用本接口的权限"); 
    } else { 
      return user; 
    } 
  } 
 
  private boolean bytesequals(byte[] bytes1, byte[] bytes2) { 
    for (int i = 0; i < bytes1.length; i++) { 
      if (bytes1[i] != bytes2[i]) { 
        return false; 
      } 
    } 
    return true; 
  } 
 
}