1，平臺的服務器整體架構

2，項目結構

3，業務結構

4，技術實現

5，業務舉例

登錄頁：

登錄：

其它的服務只是業務不同，這里省略...

6，應用的啟動過程資源準備

7，json的封裝

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

//構造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);

//構造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解碼出錯!{}", 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解碼出錯!{}", 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的理解和封裝

public class HeadlessServlet extends HttpServlet implements InjectionProxy

里面加了一個對自定以的注解的過濾；

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設計

11，老平臺小結

老平臺采用的架構很簡單，一個Guice+Servlet，簡單的把一個url映射到一個特定的Servlet, 這里借用Guice-servlet，省去了原生的servlet配置文件復雜的嫌疑，簡單的使用Guice容器， 把所需資源按照分類和層級一一放到容器中初始化，簡化了實例化的過程，提高了效率；業 務也不復雜，很容易從其它的游戲平臺移植過來，業務的技術難點有兩個，一個是跟其它服 務器的交互和通信，另外一個是緩存的使用；對于跟其它服務器的交互，主要是基于http 請求，如果對這一部分比較熟悉，只要文檔給的比較規范，開發和調試起來還是完全沒有問 題的；然后是緩存的問題，這里主要使用的Redis，一個key-value數據庫，通過把經常用的 數據從db中查詢出來，放到redis里面，需要的時候從redis里面取得，這大大提升了性能， 如果redis不穩定，可以直接從db里取得，保證了程序的健壯性；暫未進行過并發性測試， 目前能支撐2000w用戶的使用已經算是一個還不錯的架構。

轉載于:https://www.cnblogs.com/snidget/p/3592263.html

總結

以上是生活随笔為你收集整理的老平台已死，整理个文档留下做纪念的全部內容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網站內容還不錯，歡迎將生活随笔推薦給好友。