老平台已死,整理个文档留下做纪念

1,平台的服务器整体架构

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2,项目结构

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3,业务结构

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4,技术实现

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5,业务举例

登录页:

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登录:

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其它的服务只是业务不同,这里省略...

6,应用的启动过程资源准备

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7,json的封装

public static void CrossDomain2(HttpServletResponse response, HttpServletRequest request, Object msg) throws IOException {

        response.setContentType("application/json");

        final String call = request.getParameter("callBack");

        final ObjectMapper mapper = new ObjectMapper();

        String resp = mapper.writeValueAsString(msg);

        if (!Strings.isNullOrEmpty(call)) {resp = call + "(" + resp + ")";}

        PrintWriter out = response.getWriter();

        out.write(resp);

        out.flush();

        out.close(); }

8,cookie域的算法

//构造cookie

final long time = System.currentTimeMillis();

        String userId = String.valueOf(uid);

        String USERINFO = userId + "," + userName + "," + time;

        String u = Base64.encode(USERINFO + "," +

                buildUserInfoSign(String.valueOf(userId), userName, String.valueOf(time)));

        u = URLEncoder.encode(u, "utf-8");

        String key = URLEncoder.encode(Base64.encode("USERINFO"), "UTF-8");

        Cookie cookie = new Cookie(key, u);

//构造cookie加密部分

    public static String buildUserInfoSign(String id, String name, String time) {

        String userInfoSrc = id + name + time;

        String key = ConfigurationUtils.get("login.cookieKey");

        String userInfo = userInfoSrc + key;

        String md5UserInfo = MD5Utils.digestAsHex(userInfo);

        return md5UserInfo;

    }

//解析cookie

public static int getUserId(HttpServletRequest request) {

        int userId = 0;

        String value = getCookieValueByKey(request);

        if (!Strings.isNullOrEmpty(value)) {

            String val[] = value.split(",");

            userId = Integer.parseInt(val[0]);

        }

        return userId;

}

public static String getCookieValueByKey(HttpServletRequest request) {

        String value = "";

        Cookie[] cookies = request.getCookies();

        String name = "USERINFO";

        try {

            name = Base64.encode(name);

            name = URLEncoder.encode(name, "utf-8");

        } catch (Exception e) {

            log.error("USERINFO解码出错!{}", e.getMessage());

        }

        if (cookies != null && cookies.length > 0) {

            for (Cookie cookie : cookies) {

                String nameStr = cookie.getName();

                if (nameStr.equals(name)) {

                    value = cookie.getValue();

                    break;

                }

            }

        }

        if (!Strings.isNullOrEmpty(value)) {

            try {

                value = URLDecoder.decode(value, "UTF-8");

                value = Base64.decode2Str(value);

            } catch (Exception e) {

                log.error("URL解码出错!{}", e.getMessage());

            }

            String val[] = value.split(",");

            String sign = buildUserInfoSign(val[0], val[1], val[2]);

            if (!Strings.isNullOrEmpty(sign) && !Strings.isNullOrEmpty(val[3]) && sign.equals(val[3])) {

                return value;

            } else {

                return "";}

        }

        return "";

    }

9,http的理解和封装

public class HeadlessServlet extends HttpServlet implements InjectionProxy

里面加了一个对自定以的注解的过滤;

protected boolean filters(final HeadlessServletRequest request, final HeadlessServletResponse response) throws ServletException, IOException {

        final Parameter parameter = this.getClass().getAnnotation(Parameter.class);

        if (null == parameter)

            return true;// filter methods

if (!Strings.isNullOrEmpty(parameter.method()) && !request.getMethod().equalsIgnoreCase(parameter.method())) {

            notFound(response);

            return false;

        }

        // filter parameters

        boolean flag = true, emptyCheck = false;

        try {

            final Map<String, String[]> parameterMap = request.getParameterMap();

            for (String name : parameter.value()) {

                if (name.endsWith(":")) {

                    name = name.substring(0, name.length() - 1);

                    emptyCheck = true;

                }

                flag = parameterMap.containsKey(name);

                if (emptyCheck) {

                    // must has parameter.

                    flag = flag && parameterMap.get(name) != null;

                    flag = flag && parameterMap.get(name).length > 0;

                    flag = flag && !Strings.isNullOrEmpty(parameterMap.get(name)[0]);

                }

                if (!flag)

                    break;

                emptyCheck = false;

            }

            return flag;

        } finally {

            if (!flag) {

                response.sendInvalidParameters();

            }

        }

    }

10,db设计

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11,老平台小结

老平台采用的架构很简单,一个Guice+Servlet,简单的把一个url映射到一个特定的Servlet,

这里借用Guice-servlet,省去了原生的servlet配置文件复杂的嫌疑,简单的使用Guice容器,

把所需资源按照分类和层级一一放到容器中初始化,简化了实例化的过程,提高了效率;业

务也不复杂,很容易从其它的游戏平台移植过来,业务的技术难点有两个,一个是跟其它服

务器的交互和通信,另外一个是缓存的使用;对于跟其它服务器的交互,主要是基于http

请求,如果对这一部分比较熟悉,只要文档给的比较规范,开发和调试起来还是完全没有问

题的;然后是缓存的问题,这里主要使用的Redis,一个key-value数据库,通过把经常用的

数据从db中查询出来,放到redis里面,需要的时候从redis里面取得,这大大提升了性能,

如果redis不稳定,可以直接从db里取得,保证了程序的健壮性;暂未进行过并发性测试,

目前能支撑2000w用户的使用已经算是一个还不错的架构。

posted @ 2014-03-10 17:36  李福春  阅读(565)  评论(0编辑  收藏  举报