fix: dynamic routing using cookies

spring-cloud-starter-tencent-polaris-router/src/test/java/com/tencent/cloud/polaris/router/feign/FeignExpressionLabelUtilsTest.java

@@ -149,7 +149,7 @@ public class FeignExpressionLabelUtilsTest {
 		requestTemplate.method(Request.HttpMethod.GET);
 		requestTemplate.target("http://localhost");
 		requestTemplate = requestTemplate.resolve(new HashMap<>());
-		requestTemplate.header("cookie", Collections.singleton("uid=zhangsan"));
+		requestTemplate.header("cookie", Collections.singleton("uid=zhangsan; auth-token=dfhuwshfy77"));
 
 		String labelKey1 = "${http.cookie.uid}";
 		Map<String, String> result = FeignExpressionLabelUtils.resolve(requestTemplate, Stream.of(labelKey1)

spring-cloud-tencent-commons/src/main/java/com/tencent/cloud/common/util/expresstion/ExpressionLabelUtils.java

@@ -184,18 +184,14 @@ public final class ExpressionLabelUtils {
 		}
 
 		for (String value : values) {
-			String[] split = value.split("=");
-			if (split.length == 0) {
-				return StringUtils.EMPTY;
-			}
-			if (StringUtils.isEmpty(split[0]) || StringUtils.isEmpty(split[1])) {
-                return StringUtils.EMPTY;
+			String[] cookieArray = StringUtils.split(value, ";");
+			for (String cookieValue : cookieArray) {
+                String[] cookieKV = StringUtils.split(cookieValue, "=");
+                if (cookieKV != null && cookieKV.length == 2 && StringUtils.equals(cookieKV[0], key)) {
+                    return cookieKV[1];
+                }
             }
-			if (key.equals(split[0])) {
-				return split[1];
-			}
 		}
-
 		return StringUtils.EMPTY;
 	}
 }

spring-cloud-tencent-commons/src/main/java/com/tencent/cloud/common/util/expresstion/SpringWebExpressionLabelUtils.java

@@ -18,11 +18,14 @@
 
 package com.tencent.cloud.common.util.expresstion;
 
+import java.util.Collection;
 import java.util.Collections;
 import java.util.HashMap;
+import java.util.List;
 import java.util.Map;
 import java.util.Set;
 
+import io.netty.handler.codec.http.HttpHeaderNames;
 import org.apache.commons.lang.StringUtils;
 
 import org.springframework.http.HttpCookie;
@@ -110,6 +113,13 @@ public final class SpringWebExpressionLabelUtils {
 				}
 				labels.put(labelKey, getQueryValue(request, queryKey));
 			}
+			else if (ExpressionLabelUtils.isCookieLabel(labelKey)) {
+				String cookieKey = ExpressionLabelUtils.parseCookieKey(labelKey);
+                if (StringUtils.isBlank(cookieKey)) {
+                    continue;
+                }
+                labels.put(labelKey, getCookieValue(request, cookieKey));
+            }
 			else if (ExpressionLabelUtils.isMethodLabel(labelKey)) {
 				labels.put(labelKey, request.getMethodValue());
 			}
@@ -158,4 +168,19 @@ public final class SpringWebExpressionLabelUtils {
 		String query = request.getURI().getQuery();
 		return ExpressionLabelUtils.getQueryValue(query, key);
 	}
+
+	public static String getCookieValue(HttpRequest request, String key) {
+		String first = request.getHeaders().getFirst(HttpHeaders.COOKIE);
+		if (StringUtils.isEmpty(first)) {
+			return StringUtils.EMPTY;
+		}
+		String[] cookieArray = StringUtils.split(first,";");
+		for (String cookieItem : cookieArray) {
+			String[] cookieKv = StringUtils.split(cookieItem, "=");
+			if (cookieKv != null && cookieKv.length == 2 && StringUtils.equals(cookieKv[0], key)) {
+				return cookieKv[1];
+			}
+		}
+		return StringUtils.EMPTY;
+	}
 }

spring-cloud-tencent-commons/src/test/java/com/tencent/cloud/common/util/ExpressionLabelUtilsTest.java

@@ -197,12 +197,13 @@ public class ExpressionLabelUtilsTest {
 		request.setMethod(HttpMethod.GET);
 		request.setURI(URI.create("http://calleeService/user/get?uid=zhangsan"));
 		request.getHeaders().add("uid", "zhangsan");
+		request.getHeaders().add("cookie", "uid=zhangsan; auth-token=hauigdfu8esgf8");
 
 		Map<String, String> result = SpringWebExpressionLabelUtils.resolve(request, labelKeys);
 
 		assertThat(result.get(validLabel1)).isEqualTo("zhangsan");
 		assertThat(result.get(validLabel2)).isEqualTo("zhangsan");
-		assertThat(result.get(validLabel3)).isNull();
+		assertThat(result.get(validLabel3)).isEqualTo("zhangsan");
 		assertThat(result.get(validLabel4)).isEqualTo("GET");
 		assertThat(result.get(validLabel5)).isEqualTo("/user/get");
 		assertThat(result.get(invalidLabel1)).isNull();