Package com.github.ebnew.ki4so.web.action

Source Code of com.github.ebnew.ki4so.web.action.AbstractPreAndPostProcessingCredentialResolver

package com.github.ebnew.ki4so.web.action;

import javax.servlet.http.HttpServletRequest;

import com.github.ebnew.ki4so.core.authentication.Credential;

/**
* 提供凭据解析前和后处理方法的抽象解析器类。
* @author burgess yang
*
*/
public abstract class AbstractPreAndPostProcessingCredentialResolver implements CredentialResolver{
 
 
  @Override
  public Credential resolveCredential(HttpServletRequest request) {
    //解析钱处理。
    this.preResolveCredential(request);
    //进行解析。
    Credential credential = this.doResolveCredential(request);
    //解析后的处理。
    return this.postResolveCredential(request, credential);
  }
 
  /**
   * 凭据解析之前的处理。
   * @param request 请求参数对象。
   * @param credential 解析后的凭据信息,要基于该凭据上增加属性值。
   * @return 处理后的凭据解析器。
   */
  protected void preResolveCredential(HttpServletRequest request){
   
  }
 
  /**
   * 抽象方法,实现真正的凭据解析处理。
   * @param request 请求参数对象。
   * @return 解析后的凭据信息。
   */
  protected abstract Credential doResolveCredential(HttpServletRequest request);
 
  /**
   * 凭据解析后处理。
   * @param request 请求参数对象。
   * @param credential 解析后的凭据信息,要基于该凭据上增加属性值。
   * @return 处理后的凭据解析器。
   */
  protected Credential postResolveCredential(HttpServletRequest request, Credential credential){
    return credential;
  }

}
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