fix thread-unsafe about SimpleDateFormat

spring-cloud-alibaba-nacos-config/src/main/java/org/springframework/cloud/alibaba/nacos/endpoint/NacosConfigEndpoint.java

@@ -41,7 +41,12 @@ public class NacosConfigEndpoint {
 
 	private final NacosRefreshHistory refreshHistory;
 
-	private DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
+	private ThreadLocal<DateFormat> dateFormat = new ThreadLocal<DateFormat>(){
+		@Override
+		protected DateFormat initialValue() {
+			return new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
+		}
+	};
 
 	public NacosConfigEndpoint(NacosConfigProperties properties,
 			NacosRefreshHistory refreshHistory) {
@@ -60,7 +65,7 @@ public class NacosConfigEndpoint {
 		for (NacosPropertySource ps : all) {
 			Map<String, Object> source = new HashMap<>(16);
 			source.put("dataId", ps.getDataId());
-			source.put("lastSynced", dateFormat.format(ps.getTimestamp()));
+			source.put("lastSynced", dateFormat.get().format(ps.getTimestamp()));
 			sources.add(source);
 		}
 		result.put("Sources", sources);

spring-cloud-alicloud-acm/src/main/java/org/springframework/cloud/alicloud/acm/endpoint/AcmEndpoint.java

@@ -44,7 +44,12 @@ public class AcmEndpoint {
 
 	private final AcmPropertySourceRepository propertySourceRepository;
 
-	private DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
+	private ThreadLocal<DateFormat> dateFormat = new ThreadLocal<DateFormat>(){
+		@Override
+		protected DateFormat initialValue() {
+			return new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
+		}
+	};
 
 	public AcmEndpoint(AcmProperties properties, AcmRefreshHistory refreshHistory,
 			AcmPropertySourceRepository propertySourceRepository) {
@@ -65,7 +70,7 @@ public class AcmEndpoint {
 		for (AcmPropertySource ps : all) {
 			Map<String, Object> source = new HashMap<>();
 			source.put("dataId", ps.getDataId());
-			source.put("lastSynced", dateFormat.format(ps.getTimestamp()));
+			source.put("lastSynced", dateFormat.get().format(ps.getTimestamp()));
 			sources.add(source);
 		}
 		runtime.put("sources", sources);

spring-cloud-alicloud-acm/src/main/java/org/springframework/cloud/alicloud/acm/refresh/AcmRefreshHistory.java

@@ -30,10 +30,15 @@ public class AcmRefreshHistory {
 
 	private LinkedList<Record> records = new LinkedList<>();
 
-	private DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
+	private ThreadLocal<DateFormat> dateFormat = new ThreadLocal<DateFormat>(){
+		@Override
+		protected DateFormat initialValue() {
+			return new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
+		}
+	};
 
 	public void add(String dataId, String md5) {
-		records.addFirst(new Record(dateFormat.format(new Date()), dataId, md5));
+		records.addFirst(new Record(dateFormat.get().format(new Date()), dataId, md5));
 		if (records.size() > MAX_SIZE) {
 			records.removeLast();
 		}

spring-cloud-alicloud-sms/src/main/java/org/springframework/cloud/alicloud/sms/base/DefaultAlicomMessagePuller.java

@@ -15,6 +15,7 @@
  */
 package org.springframework.cloud.alicloud.sms.base;
 
+import java.text.DateFormat;
 import java.text.ParseException;
 import java.text.SimpleDateFormat;
 import java.util.Date;
@@ -158,11 +159,15 @@ public class DefaultAlicomMessagePuller {
 					if (!polling) {
 						popMsg = queue.popMessage();
 						if (debugLogOpen) {
-							SimpleDateFormat format = new SimpleDateFormat(
+							ThreadLocal<DateFormat> format = new ThreadLocal<DateFormat>(){
-									"yyyy-MM-dd HH:mm:ss");
+								@Override
+								protected DateFormat initialValue() {
+									return new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
+								}
+							};
 							log.info("PullMessageTask_popMessage:"
 									+ Thread.currentThread().getName() + "-popDone at "
-									+ "," + format.format(new Date()) + " msgSize="
+									+ "," + format.get().format(new Date()) + " msgSize="
 									+ (popMsg == null ? 0 : popMsg.getMessageId()));
 						}
 						if (popMsg == null) {

spring-cloud-alicloud-sms/src/main/java/org/springframework/cloud/alicloud/sms/base/TokenGetterForAlicom.java

@@ -77,7 +77,7 @@ public class TokenGetterForAlicom {
 	}
 
 	private TokenForAlicom getTokenFromRemote(String messageType)
-			throws ServerException, ClientException, ParseException {
+			throws ClientException, ParseException {
 		SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
 		df.setTimeZone(TimeZone.getTimeZone("Asia/Shanghai"));
 		QueryTokenForMnsQueueRequest request = new QueryTokenForMnsQueueRequest();
@@ -109,7 +109,7 @@ public class TokenGetterForAlicom {
 
 	public TokenForAlicom getTokenByMessageType(String messageType, String queueName,
 			String mnsAccountEndpoint)
-			throws ServerException, ClientException, ParseException {
+			throws ClientException, ParseException {
 		TokenForAlicom token = tokenMap.get(messageType);
 		Long now = System.currentTimeMillis();
 		if (token == null || (token.getExpireTime() - now) < bufferTime) {// 过期时间小于2分钟则重新获取，防止服务器时间误差