windows 環境下nginx + tomcat群 + redis 實現session共用，nginxredis
本例採用的是
nginx 1.9.13
tomcat 7.0.64
redis 2.8
操作步驟：
① 準備兩個tomcat，並修改連接埠，修改tomcat/webapps/ROOT中index.jsp內容為：
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%><% String username = request.getParameter("username"); System.out.println("username:"+username); if(username!=null){ session.setAttribute("userSession", username); System.out.println("value in session is :" + session.getAttribute("userSession")); }%><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>ngix+tomcat+redis session共用驗證</title></head><body><form action="index.jsp"> <input type="text" name="username" value=""/> <br/> <input type="submit" value="儲存資訊到session"/></form><hr/><!-- 不同tomcat請使用不同mark 以便識別 -->你訪問的tomcat 連接埠為:8898 tomcat001<br/>session值為： <%=session.getAttribute("userSession") %></body></html>
並保證兩個tomcat都能正常啟動，並能正常訪問
② 下載ngix並修改conf檔案如下
#Nginx所用使用者和組#user niumd niumd;#工作的子進程數量（通常等於CPU數量或者2倍於CPU）worker_processes 1;#錯誤記錄檔存放路徑#error_log logs/error.log;#error_log logs/error.log notice;error_log logs/error.log info;#指定pid存放檔案pid logs/nginx.pid;events { #使用網路IO模型linux建議epoll，FreeBSD建議採用kqueue #use epoll; #允許最大串連數 worker_connections 1024;}http { include mime.types; default_type application/octet-stream; #定義日誌格式 #log_format main '$remote_addr - $remote_user [$time_local] $request ' # '"$status" $body_bytes_sent "$http_referer" ' # '"$http_user_agent" "$http_x_forwarded_for"'; #access_log off; access_log logs/access.log; client_header_timeout 3m; client_body_timeout 3m; send_timeout 3m; client_header_buffer_size 1k; large_client_header_buffers 4 4k; sendfile on; tcp_nopush on; tcp_nodelay on; #keepalive_timeout 75 20; include gzip.conf; upstream localhost { #ip_hash #ip_hash; #測試時請不要開啟ip_hash 否則不會在不同server間跳轉，第一次訪問的哪一個就會一直訪問哪一個server #下面為配置的server列表，weight表示權重，值越大分配到的請求就越多，預設為1. server localhost:8898 weight=1; server localhost:8899 weight=1; } server { listen 8888; #8888為監聽的連接埠，所以訪問時就要通過 ip:8888來訪問 server_name localhost; location / { proxy_connect_timeout 3; proxy_send_timeout 30; proxy_read_timeout 30; proxy_pass http://localhost; #這裡的名字要和上面upstream後面跟的名字一致 } }}View Code
③ cmd視窗中啟動nginx 停止用nginx -s stop命令
④下載redis並在cmd中執行server.exe啟動，可根據需要修改redis.conf中的連接埠 port 6379 ，預設連接埠為6379 停止使用 redis-cli shutdown
⑤ 建立maven工程並選擇和本地java_home版本一致的jdk，將https://github.com/jcoleman/tomcat-redis-session-manager 代碼加入依賴並打包
⑥ 修改tomcat/conf下context.xml為
<?xml version='1.0' encoding='utf-8'?><!-- Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file to You under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.--><!-- The contents of this file will be loaded for each web application --><Context> <!-- Default set of monitored resources --> <WatchedResource>WEB-INF/web.xml</WatchedResource> <!-- Uncomment this to disable session persistence across Tomcat restarts --> <!-- <Manager pathname="" /> --> <!-- Uncomment this to enable Comet connection tacking (provides events on session expiration as well as webapp lifecycle) --> <!-- <Valve className="org.apache.catalina.valves.CometConnectionManagerValve" /> --> <Valve className="com.orangefunction.tomcat.redissessions.RedisSessionHandlerValve" /> <Manager className="com.orangefunction.tomcat.redissessions.RedisSessionManager" host="localhost" port="6379" database="0" maxInactiveInterval="60" /></Context>View Code
⑦修改tomcat/conf/server.xml中engine資訊 增加jvmRoute 標示
<Engine name="Catalina" defaultHost="localhost" jvmRoute="jvm8899">
⑧ 拷貝第⑤步打好的jar包以及依賴的jedis-2.7.2.jar commons-pool2-2.4.1.jar到每個tomcat的lib目錄下
⑨ 先啟動redis，再啟動所有tomcat，最後啟動nginx 輸入nginx監聽的連接埠進行訪問，結果如下：
最開始沒有輸入session資訊時，多次重新整理將顯示訪問到了兩個不同的tomcat
在輸入框中輸入資訊並儲存，再不斷重新整理
在執行過程中，也會看見redis控制台不停的有相應資訊輸出
後期我會將所有的執行個體代碼及設定檔全部放到我的網盤，歡迎下載驗證，相互交流
： http://pan.baidu.com/s/1pK7GIbp
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