spingboot handlerinterceptor实现用户认证和页面拦截跳转之一 实现HandleInterceptor

1、

自定义类interceptor是实现拦截进行认证验证，

 功能：用户认证和页面拦截跳转

 实现：验证是否有session和cookie信息

 方法：实现spring的HandlerInterceptor接口，handle接口中定义了 三个方法 

方法一：prehandle()是在处理请求之前进行调用，执行controller的任务之前调用，返回true继续执行，返回false放弃执行。

方法二：posthandle()一般是请求处理之后，视图返回渲染之前进行调用，支持在这个方法中对controller处理之后的model view对象进行操作。

方法三：aftercompletion是perhandle方法返回true和渲染对应的视图之后执行，用于资源清理，无需手动加入任何语句就可以实现。

package com.pro.sign.interceptors;

import java.util.Map;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import com.pro.sign.entity.Session;
import com.pro.sign.exception.SignException;
import com.pro.sign.service.ISignService;
import com.pro.tool.util.ToolContextData;
import com.pro.tool.vo.CurrentLoginAccountInfo;
import com.pro.tool.vo.TokenTimesEffect;
/*增加自定义类interceptor是实现拦截进行认证验证，
 * 功能：用户认证和页面拦截跳转
 * 实现：验证是否有session和cookie信息
 * 方法：实现spring的HandlerInterceptor接口，handle接口中定义了
 *           三个方法使用方法和功能如下：
 */
@Component
public class AuthorizationInterceptor implements HandlerInterceptor {

  private static final org.apache.commons.logging.Log log = org.apache.commons.logging.LogFactory.getLog(AuthorizationInterceptor.class);

  @Value("${proconfig.cookies-times-effect}")
  private Long cookiesTimesEffect;

  @javax.annotation.Resource(name = "com.pro.sign.SignService")
  private ISignService signService;
/*方法一：prehandle()是在处理请求之前进行调用，执行controller的任务之前调用，
 * 返回true继续执行，返回false放弃执行*/
  @Override
  public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
    if (log.isInfoEnabled()) {
      log.info("======================= AuthorizationInterceptor preHandle =======================");
    }
    try {
      Map<String, String[]> parameterMap = request.getParameterMap();
      if (parameterMap.containsKey("token")) {
        Long times = System.currentTimeMillis();
        String token = parameterMap.get("token")[0];
        Session session = signService.getSessionByPk(token);
        if (session != null) {
          session.setCurrentTimes(times);
          signService.updateSession(session);
          ToolContextData.removeTokenTimesEffect();
          TokenTimesEffect tokenTimesEffect = new TokenTimesEffect();
          tokenTimesEffect.setToken(token);
          tokenTimesEffect.setCookiesExpireTimes(times + cookiesTimesEffect);
          ToolContextData.setTokenTimesEffect(tokenTimesEffect);
          ToolContextData.removeCurrentLoginAccountInfo();
          CurrentLoginAccountInfo currentLoginAccountInfo = new CurrentLoginAccountInfo();
          currentLoginAccountInfo.setAccountId(session.getAccountId());
          ToolContextData.setCurrentLoginAccountInfo(currentLoginAccountInfo);
        } else {
          response.sendError(401, "token 无效");
          return false;
        }
      } else {
        response.sendError(401, "token 无效");
        return false;
      }
      return true;
    } catch (SignException e) {
      if (log.isErrorEnabled()) {
        log.error(e);
      }
      throw e;
    } catch (Exception e) {
      if (log.isErrorEnabled()) {
        log.error(e.getMessage(), e);
      }
      throw SignException.getException(e, SignException.FW_ERROR, e.getMessage());
    }
  }
/*posthandle()一般是请求处理之后，视图返回渲染之前进行调用
 *支持在这个方法中对controller处理之后的model view对象进行操作。*/
  @Override
  public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
    if (log.isInfoEnabled()) {
      log.info("======================= AuthorizationInterceptor postHandle =======================");
    }
  }
/*aftercompletion是perhandle方法返回true和渲染对应的视图之后执行，
 * 用于资源清理，无需手动加入任何语句就可以实现*/
  @Override
  public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
    if (log.isInfoEnabled()) {
      log.info("======================= AuthorizationInterceptor afterCompletion =======================");
    }
  }

}