Merge branch 'master' into jfinal-java8

src/main/java/com/jfinal/ext/interceptor/SessionInViewInterceptor.java

@@ -137,6 +137,10 @@ class JFinalSession extends HashMap implements HttpSession {
 	public void setMaxInactiveInterval(int maxInactiveInterval) {
 		session.setMaxInactiveInterval(maxInactiveInterval);
 	}
+	
+	public String toString() {
+		return session != null ? session.toString() : "null";
+	}
 }
 
 /*

src/main/java/com/jfinal/template/ext/spring/JFinalView.java

@@ -155,6 +155,10 @@ class InnerSession extends HashMap<Object, Object> implements HttpSession {
 	public void setMaxInactiveInterval(int maxInactiveInterval) {
 		session.setMaxInactiveInterval(maxInactiveInterval);
 	}
+	
+	public String toString() {
+		return session != null ? session.toString() : "null";
+	}
 }