diff --git a/sa-token-core/src/main/java/cn/dev33/satoken/session/SaSession.java b/sa-token-core/src/main/java/cn/dev33/satoken/session/SaSession.java
index 448c3bf2..cd32a021 100644
--- a/sa-token-core/src/main/java/cn/dev33/satoken/session/SaSession.java
+++ b/sa-token-core/src/main/java/cn/dev33/satoken/session/SaSession.java
@@ -283,6 +283,16 @@ public class SaSession implements Serializable {
 			SaTokenManager.getSaTokenDao().updateSessionTimeout(this.id, minTimeout);
 		}
 	}
+
+	/**
+	 * 修改此Session的最大剩余存活时间 (只有在Session的过期时间高于指定的maxTimeout时才会进行修改)
+	 * @param maxTimeout 过期时间 (单位: 秒) 
+	 */
+	public void updateMaxTimeout(long maxTimeout) {
+		if(getTimeout() > maxTimeout) {
+			SaTokenManager.getSaTokenDao().updateSessionTimeout(this.id, maxTimeout);
+		}
+	}
 	
 	
 	
diff --git a/sa-token-core/src/main/java/cn/dev33/satoken/stp/StpLogic.java b/sa-token-core/src/main/java/cn/dev33/satoken/stp/StpLogic.java
index dff30451..c02e7741 100644
--- a/sa-token-core/src/main/java/cn/dev33/satoken/stp/StpLogic.java
+++ b/sa-token-core/src/main/java/cn/dev33/satoken/stp/StpLogic.java
@@ -92,11 +92,19 @@ public class StpLogic {
  	 * @param tokenValue token值 
  	 */
 	public void setTokenValue(String tokenValue, int cookieTimeout){
+		SaTokenConfig config = getConfig();
 		// 将token保存到本次request里  
 		HttpServletRequest request = SaTokenManager.getSaTokenServlet().getRequest();
-		request.setAttribute(splicingKeyJustCreatedSave(), tokenValue);	
+		// 判断是否配置了token前缀 
+		String tokenPrefix = config.getTokenPrefix();
+		if(SaTokenInsideUtil.isEmpty(tokenPrefix)) {
+			request.setAttribute(splicingKeyJustCreatedSave(), tokenValue);	
+		} else {
+			// 如果配置了token前缀，则拼接上前缀一起写入 
+			request.setAttribute(splicingKeyJustCreatedSave(), tokenPrefix + SaTokenConsts.TOKEN_CONNECTOR_CHAT + tokenValue);	
+		}
+		
 		// 注入Cookie 
-		SaTokenConfig config = getConfig();
 		if(config.getIsReadCookie() == true){
 			HttpServletResponse response = SaTokenManager.getSaTokenServlet().getResponse();
 			SaTokenManager.getSaTokenCookie().addCookie(response, getTokenName(), tokenValue, 
@@ -138,9 +146,11 @@ public class StpLogic {
 		// 5. 如果打开了前缀模式
 		String tokenPrefix = getConfig().getTokenPrefix();
 		if(SaTokenInsideUtil.isEmpty(tokenPrefix) == false && SaTokenInsideUtil.isEmpty(tokenValue) == false) {
-			// 如果token以指定的前缀开头, 则裁剪掉它 
-			if(tokenValue.startsWith(tokenPrefix + " ")) {
-				tokenValue = tokenValue.substring(tokenPrefix.length() + 1);
+			// 如果token以指定的前缀开头, 则裁剪掉它, 否则视为未提供token 
+			if(tokenValue.startsWith(tokenPrefix + SaTokenConsts.TOKEN_CONNECTOR_CHAT)) {
+				tokenValue = tokenValue.substring(tokenPrefix.length() + SaTokenConsts.TOKEN_CONNECTOR_CHAT.length());
+			} else {
+				tokenValue = null;
 			}
 		}
 		
diff --git a/sa-token-core/src/main/java/cn/dev33/satoken/util/SaTokenConsts.java b/sa-token-core/src/main/java/cn/dev33/satoken/util/SaTokenConsts.java
index 68cc4ccb..304fb321 100644
--- a/sa-token-core/src/main/java/cn/dev33/satoken/util/SaTokenConsts.java
+++ b/sa-token-core/src/main/java/cn/dev33/satoken/util/SaTokenConsts.java
@@ -42,8 +42,8 @@ public class SaTokenConsts {
 	 * 常量key标记: 在进行临时身份切换时使用的key 
 	 */
 	public static final String SWITCH_TO_SAVE_KEY = "SWITCH_TO_SAVE_KEY_"; 
-	
-	
+
+
 	// =================== token-style 相关 ===================  
 	
 	/**
@@ -75,6 +75,13 @@ public class SaTokenConsts {
 	 * token风格: tik风格 (2_14_16) 
 	 */
 	public static final String TOKEN_STYLE_RANDOM_TIK = "tik"; 
+
 	
+	// =================== 其它 ===================  
+
+	/**
+	 * 连接token前缀和token值的字符 
+	 */
+	public static final String TOKEN_CONNECTOR_CHAT  = " "; 
 	
 }
diff --git a/sa-token-demo-springboot/src/main/java/com/pj/test/TestController.java b/sa-token-demo-springboot/src/main/java/com/pj/test/TestController.java
index 294a6a99..ce27d2b5 100644
--- a/sa-token-demo-springboot/src/main/java/com/pj/test/TestController.java
+++ b/sa-token-demo-springboot/src/main/java/com/pj/test/TestController.java
@@ -248,7 +248,6 @@ public class TestController {
 //				.setIsLastingCookie(true)		// 是否为持久Cookie（临时Cookie在浏览器关闭时会自动删除，持久Cookie在重新打开后依然存在）
 //				.setTimeout(60 * 60 * 24 * 7)	// 指定此次登录token的有效期, 单位:秒 （如未指定，自动取全局配置的timeout值）
 //				);
-		StpUtil.getTokenSession();
 		return AjaxJson.getSuccess("访问成功");
 	}
 	
diff --git a/sa-token-demo-springboot/src/main/resources/application.yml b/sa-token-demo-springboot/src/main/resources/application.yml
index e02a9df0..0ee1952f 100644
--- a/sa-token-demo-springboot/src/main/resources/application.yml
+++ b/sa-token-demo-springboot/src/main/resources/application.yml
@@ -19,7 +19,6 @@ spring:
         token-style: uuid
         
         
-        
     # redis配置 
     redis:
         # Redis数据库索引（默认为0）