spring redis 配置子域名共享session (有点坑)

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坑一  :**private String cookieName = "DTL_SESSION_ID";**

坑二 :	

 private String getCookiePath(HttpServletRequest request) {  
	        if (this.cookiePath == null) {  
	            // 此处改为返回根路径  
	            return "/";  
	        }  
	        return this.cookiePath;  
	 }  








redis添加



	Redis配置

	
		
		
		
		
		
	
	
	
		
		
		
		
		
	
	
	
	
		
		
	
	
	
	
		
		
	
    
    
        
    
    
      
    
        
    
    
        
        
        
          
          
      
           
       
          
      
    





web.xml 添加到最前面


	
		springSessionRepositoryFilter
		org.springframework.web.filter.DelegatingFilterProxy
	
	
		springSessionRepositoryFilter
		/*
		REQUEST
		ERROR
	










package cn.com.czw.front.filter;

/*
 * Copyright 2014-2016 the original author or authors.
 *
 * Licensed 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.
 */

import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import javax.servlet.ServletRequest;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.session.web.http.CookieSerializer;

/**
 * The default implementation of {[@link](https://my.oschina.net/u/393) CookieSerializer}.
 *
 * [@author](https://my.oschina.net/arthor) Rob Winch
 * [@since](https://my.oschina.net/u/266547) 1.1
 */
public class CustomerCookiesSerializer implements CookieSerializer {
	private String cookieName = "DTL_SESSION_ID";

	private Boolean useSecureCookie;

	private boolean useHttpOnlyCookie = isServlet3();

	private String cookiePath;

	private int cookieMaxAge = -1;

	private String domainName;

	private Pattern domainNamePattern;

	private String jvmRoute;
	

	/*
	 * (non-Javadoc)
	 *
	 * [@see](https://my.oschina.net/weimingwei) org.springframework.session.web.http.CookieSerializer#readCookieValues(javax.
	 * servlet.http.HttpServletRequest)
	 */
	public List readCookieValues(HttpServletRequest request) {
		Cookie[] cookies = request.getCookies();
		List matchingCookieValues = new ArrayList();
		if (cookies != null) {
			for (Cookie cookie : cookies) {
				if (this.cookieName.equals(cookie.getName())) {
					String sessionId = cookie.getValue();
					if (sessionId == null) {
						continue;
					}
					if (this.jvmRoute != null && sessionId.endsWith(this.jvmRoute)) {
						sessionId = sessionId.substring(0,
								sessionId.length() - this.jvmRoute.length());
					}
					matchingCookieValues.add(sessionId);
				}
			}
		}
		return matchingCookieValues;
	}

	/*
	 * (non-Javadoc)
	 *
	 * [@see](https://my.oschina.net/weimingwei) org.springframework.session.web.http.CookieWriter#writeCookieValue(org.
	 * springframework.session.web.http.CookieWriter.CookieValue)
	 */
	public void writeCookieValue(CookieValue cookieValue) {
		HttpServletRequest request = cookieValue.getRequest();
		HttpServletResponse response = cookieValue.getResponse();

		String requestedCookieValue = cookieValue.getCookieValue();
		String actualCookieValue = this.jvmRoute == null ? requestedCookieValue
				: requestedCookieValue + this.jvmRoute;

		Cookie sessionCookie = new Cookie(this.cookieName, actualCookieValue);
		sessionCookie.setSecure(isSecureCookie(request));
		sessionCookie.setPath(getCookiePath(request));
		String domainName = getDomainName(request);
		if (domainName != null) {
			sessionCookie.setDomain(domainName);
		}

		if (this.useHttpOnlyCookie) {
			sessionCookie.setHttpOnly(true);
		}

		if ("".equals(requestedCookieValue)) {
			sessionCookie.setMaxAge(0);
		}
		else {
			sessionCookie.setMaxAge(this.cookieMaxAge);
		}

		response.addCookie(sessionCookie);
	}

	/**
	 * Sets if a Cookie marked as secure should be used. The default is to use the value
	 * of {@link HttpServletRequest#isSecure()}.
	 *
	 * @param useSecureCookie determines if the cookie should be marked as secure.
	 */
	public void setUseSecureCookie(boolean useSecureCookie) {
		this.useSecureCookie = useSecureCookie;
	}

	/**
	 * Sets if a Cookie marked as HTTP Only should be used. The default is true in Servlet
	 * 3+ environments, else false.
	 *
	 * @param useHttpOnlyCookie determines if the cookie should be marked as HTTP Only.
	 */
	public void setUseHttpOnlyCookie(boolean useHttpOnlyCookie) {
		if (useHttpOnlyCookie && !isServlet3()) {
			throw new IllegalArgumentException(
					"You cannot set useHttpOnlyCookie to true in pre Servlet 3 environment");
		}
		this.useHttpOnlyCookie = useHttpOnlyCookie;
	}

	private boolean isSecureCookie(HttpServletRequest request) {
		if (this.useSecureCookie == null) {
			return request.isSecure();
		}
		return this.useSecureCookie;
	}

	/**
	 * Sets the path of the Cookie. The default is to use the context path from the
	 * {@link HttpServletRequest}.
	 *
	 * @param cookiePath the path of the Cookie. If null, the default of the context path
	 * will be used.
	 */
	public void setCookiePath(String cookiePath) {
		this.cookiePath = cookiePath;
	}

	public void setCookieName(String cookieName) {
		if (cookieName == null) {
			throw new IllegalArgumentException("cookieName cannot be null");
		}
		this.cookieName = cookieName;
	}

	/**
	 * Sets the maxAge property of the Cookie. The default is -1 which signals to delete
	 * the cookie when the browser is closed.
	 *
	 * @param cookieMaxAge the maxAge property of the Cookie
	 */
	public void setCookieMaxAge(int cookieMaxAge) {
		this.cookieMaxAge = cookieMaxAge;
	}

	/**
	 * Sets an explicit Domain Name. This allow the domain of "example.com" to be used
	 * when the request comes from www.example.com. This allows for sharing the cookie
	 * across subdomains. The default is to use the current domain.
	 *
	 * @param domainName the name of the domain to use. (i.e. "example.com")
	 * @throws IllegalStateException if the domainNamePattern is also set
	 */
	public void setDomainName(String domainName) {
		if (this.domainNamePattern != null) {
			throw new IllegalStateException(
					"Cannot set both domainName and domainNamePattern");
		}
		this.domainName = domainName;
	}

	/**
	 * 

* Sets a case insensitive pattern used to extract the domain name from the * {@link HttpServletRequest#getServerName()}. The pattern should provide a single * grouping that defines what the value is that should be matched. User's should be * careful not to output malicious characters like new lines to prevent from things * like HTTP * Response Splitting. *

* *

* If the pattern does not match, then no domain will be set. This is useful to ensure * the domain is not set during development when localhost might be used. *

*

* An example value might be "^.+?\\.(\\w+\\.[a-z]+)$". For the given input, it would * provide the following explicit domain (null means no domain name is set): *

* *
    *
  • example.com - null
  • *
  • child.sub.example.com - example.com
  • *
  • localhost - null
  • *
  • 127.0.1.1 - null
  • *
* * @param domainNamePattern the case insensitive pattern to extract the domain name * with * @throws IllegalStateException if the domainName is also set */ public void setDomainNamePattern(String domainNamePattern) { if (this.domainName != null) { throw new IllegalStateException( "Cannot set both domainName and domainNamePattern"); } this.domainNamePattern = Pattern.compile(domainNamePattern, Pattern.CASE_INSENSITIVE); } /** *

* Used to identify which JVM to route to for session affinity. With some * implementations (i.e. Redis) this provides no performance benefit. However, this * can help with tracing logs of a particular user. This will ensure that the value of * the cookie is formatted as *

* * sessionId + "." jvmRoute * *

* To use set a custom route on each JVM instance and setup a frontend proxy to * forward all requests to the JVM based on the route. *

* * @param jvmRoute the JVM Route to use (i.e. "node01jvmA", "n01ja", etc) */ public void setJvmRoute(String jvmRoute) { this.jvmRoute = "." + jvmRoute; } private String getDomainName(HttpServletRequest request) { if (this.domainName != null) { return this.domainName; } if (this.domainNamePattern != null) { Matcher matcher = this.domainNamePattern.matcher(request.getServerName()); if (matcher.matches()) { return matcher.group(1); } } return null; } private String getCookiePath(HttpServletRequest request) { if (this.cookiePath == null) { // 此处改为返回根路径 return "/"; } return this.cookiePath; } /** * Returns true if the Servlet 3 APIs are detected. * * @return whether the Servlet 3 APIs are detected */ private boolean isServlet3() { try { ServletRequest.class.getMethod("startAsync"); return true; } catch (NoSuchMethodException e) { } return false; } } package cn.com.czw.front.filter; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.session.data.redis.config.annotation.web.http.EnableRedisHttpSession; import org.springframework.session.web.http.CookieHttpSessionStrategy; @Configuration @EnableRedisHttpSession public class HttpSessionConfig { @Bean public CookieHttpSessionStrategy cookieHttpSessionStrategy() { CookieHttpSessionStrategy strategy = new CookieHttpSessionStrategy(); strategy.setCookieSerializer(new CustomerCookiesSerializer()); return strategy; } }

转载于:https://my.oschina.net/u/1052192/blog/1023394

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