lean_3/src/main/java/com/fr/plugin/MyGlobalRequestFilter.java

package com.fr.plugin;

import com.fr.decision.authority.data.User;
import com.fr.decision.fun.impl.AbstractGlobalRequestFilterProvider;
import com.fr.decision.webservice.utils.DecisionServiceConstants;
import com.fr.decision.webservice.v10.login.LoginService;
import com.fr.decision.webservice.v10.user.UserService;
import com.fr.log.FineLoggerFactory;
import com.fr.stable.StringUtils;
import com.fr.web.utils.WebUtils;

import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.Base64;

public class MyGlobalRequestFilter extends AbstractGlobalRequestFilterProvider {
    @Override
    public String filterName() {
        return "everyThing";
    }


    @Override
    public String[] urlPatterns() {
        return new String[]{
                "/decision/*"
        };
    }

    @Override
    public void doFilter(HttpServletRequest req, HttpServletResponse res, FilterChain filterChain) {
        try {
            if(!isLogin(req)){
                String my_token = req.getParameter("my_token");
                if (StringUtils.isNotBlank(my_token)) {
                    try {
                        String  userName = new String(Base64.getUrlDecoder().decode(my_token));
                        User user = UserService.getInstance().getUserByUserName(userName);
                        if (user != null) {
                            String token = LoginService.getInstance().login(req, res, userName);
                            req.setAttribute(DecisionServiceConstants.FINE_AUTH_TOKEN_NAME,token);
                        }else{
                            FineLoggerFactory.getLogger().error("登录用户不存在:{}",userName);
                            WebUtils.printAsString(res,"login user not exist :"+userName);
                            return;
                        }
                    } catch (Exception e) {
                        //登录过程中出现异常
                        FineLoggerFactory.getLogger().error("登录过程异常:{}",e);
                        // e.printStackTrace();
                    }
                }
            }

            filterChain.doFilter(req, res);
        } catch (IOException e) {
            e.printStackTrace();
        } catch (ServletException e) {
            e.printStackTrace();
        }
    }

    private boolean isLogin(HttpServletRequest request){
        return LoginService.getInstance().isLogged(request);
    }
}