tomcat对sessionId的处理分析
tomcat 7对sessionId的处理：
首先解析request请求中的sessionID：
从AjpProcessor.java的process(SocketWrapper<Socket> socket)调用CoyoteAdapter.process里面有的postParseRequest(org.apache.coyote.Request req, Request request,org.apache.coyote.Response res,
Response response) 就有解析获取sessionid的过程
/** * Special method for adding a session cookie as we should be overriding * any previous * @param cookie */ public void addSessionCookieInternal(final Cookie cookie) { if (isCommitted()) { return; } String name = cookie.getName(); final String headername = "Set-Cookie"; final String startsWith = name + "="; final StringBuffer sb = generateCookieString(cookie); boolean set = false; MimeHeaders headers = coyoteResponse.getMimeHeaders(); int n = headers.size(); for (int i = 0; i < n; i++) { if (headers.getName(i).toString().equals(headername)) { if (headers.getValue(i).toString().startsWith(startsWith)) { headers.getValue(i).setString(sb.toString()); set = true; } } } if (!set) { addHeader(headername, sb.toString()); } }