miduo_login/src/main/java/com/ljsd/controller/GetUserController.java

package com.ljsd.controller;

import com.ljsd.redis.RedisKey;
import com.ljsd.util.BaseGlobal;
import com.mongodb.BasicDBObject;
import com.mongodb.DBObject;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.List;
import java.util.Random;

public class GetUserController extends HttpServlet {
    private final static String _COLLECTION_NAME = "user_info";

    public GetUserController() {
        super();
    }

    public void destroy() {
        super.destroy();
    }


    public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        String openId = request.getParameter("openId");
        if (openId == null || openId.isEmpty()) {
            response.sendError(400, "openId is empety");
            return;
        }
        String serverId = request.getParameter("serverId");
        if (serverId == null || serverId.isEmpty()) {
            response.sendError(400, "serverId is empety");
            return;
        }
        DBObject dbObject = new BasicDBObject();
        dbObject.put("openId", openId);
        dbObject.put("serverId", serverId);
        try {
            int uid = 0;
            List<DBObject> userInfos = BaseGlobal.getInstance().mongoDBPool.find(_COLLECTION_NAME, dbObject);
            DBObject res = new BasicDBObject();
            if (userInfos.size() == 0) {
                uid = BaseGlobal.getInstance().mongoDBPool.inc("uid") + 10000000;
                dbObject.put("uid", uid);
                dbObject.put("_id", uid);
                userInfos.add(dbObject);
                BaseGlobal.getInstance().mongoDBPool.save(_COLLECTION_NAME, dbObject);
            }
            Random random = new Random();
            int token = Math.abs(random.nextInt());
            uid = (int) userInfos.get(0).get("uid");
            res.put("uid", uid);
            res.put("token", token);
            BaseGlobal.getInstance().redisApp.set(RedisKey.TOKEN, String.valueOf(uid), token, -1, false);
            PrintWriter out = response.getWriter();
            out.print(res);
            out.flush();
            out.close();
        } catch (Exception e) {
            e.printStackTrace();
        }


    }

    public void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        this.doGet(request, response);
    }

}