diff --git a/ess/ess-api/src/main/java/cn/axzo/nanopart/ess/api/enums/MQEvent.java b/ess/ess-api/src/main/java/cn/axzo/nanopart/ess/api/enums/MQEvent.java
index 56f35c6c..f1c1b673 100644
--- a/ess/ess-api/src/main/java/cn/axzo/nanopart/ess/api/enums/MQEvent.java
+++ b/ess/ess-api/src/main/java/cn/axzo/nanopart/ess/api/enums/MQEvent.java
@@ -1,11 +1,11 @@
 
 package cn.axzo.nanopart.ess.api.enums;
 
+import java.util.Arrays;
+
 import cn.axzo.framework.rocketmq.Event;
 import lombok.Getter;
 
-import java.util.Arrays;
-
 /**
  * @Author zr
  * @Date 2024/3/19 18:01
@@ -15,7 +15,6 @@ import java.util.Arrays;
 public enum MQEvent {
 
 	ESS_CONTRACT_STATE_CHANGE("nanopart", "ess-contract-state-change", "腾讯电子签合同状态变化"),
-	ESS_CONTRACT_DOWNLOAD_PDF("nanopart", "ess-contract-download-pdf", "腾讯电子签合同下载PDF"),
 
 	;
 	private final String model;
diff --git a/ess/ess-server/src/main/java/cn/axzo/nanopart/ess/server/ess/EssService.java b/ess/ess-server/src/main/java/cn/axzo/nanopart/ess/server/ess/EssService.java
index 5877a94a..1b336db0 100644
--- a/ess/ess-server/src/main/java/cn/axzo/nanopart/ess/server/ess/EssService.java
+++ b/ess/ess-server/src/main/java/cn/axzo/nanopart/ess/server/ess/EssService.java
@@ -183,6 +183,10 @@ public class EssService {
 	public void saveContractSnapshot(SaveContractSnapshotRequest request) {
 		essLogDao.logRequest("saveContractSnapshot", request.getEssContractId(), request);
 		EssContract contract = essContractDao.getOrThrow(request.getEssContractId());
+		if (contract.isSavedOnOss() && !request.isRetryDownload()) {
+			log.info("合同已保存快照, contract={}", contract);
+			return;
+		}
 		contract.getOrCreateExt().setSaveContractSnapshotArbitrarily(true);
 		essContractDao.updateExt(contract);
 		maybeScheduleDownloadContractPDF(contract, request.isRetryDownload());
diff --git a/ess/ess-server/src/main/java/cn/axzo/nanopart/ess/server/ess/mq/DownloadContractHandler.java b/ess/ess-server/src/main/java/cn/axzo/nanopart/ess/server/ess/mq/DownloadContractHandler.java
index 3bfa4f22..75b7e896 100644
--- a/ess/ess-server/src/main/java/cn/axzo/nanopart/ess/server/ess/mq/DownloadContractHandler.java
+++ b/ess/ess-server/src/main/java/cn/axzo/nanopart/ess/server/ess/mq/DownloadContractHandler.java
@@ -1,21 +1,20 @@
 
 package cn.axzo.nanopart.ess.server.ess.mq;
 
+import org.springframework.beans.factory.InitializingBean;
+import org.springframework.stereotype.Component;
+
+import com.alibaba.fastjson.JSON;
+
 import cn.axzo.framework.rocketmq.Event;
 import cn.axzo.framework.rocketmq.EventConsumer;
 import cn.axzo.framework.rocketmq.EventHandler;
-import cn.axzo.nanopart.ess.api.enums.MQEvent;
 import cn.axzo.nanopart.ess.api.mq.EssContractDownloadPDFEvent;
 import cn.axzo.nanopart.ess.server.dao.EssContractDao;
 import cn.axzo.nanopart.ess.server.entity.EssContract;
 import cn.axzo.nanopart.ess.server.ess.EssService;
-import com.alibaba.fastjson.JSON;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
-import org.springframework.beans.factory.InitializingBean;
-import org.springframework.stereotype.Component;
-
-import java.util.Collections;
 
 /**
  *
@@ -45,8 +44,7 @@ public class DownloadContractHandler implements EventHandler, InitializingBean {
 
 	@Override
 	public void afterPropertiesSet() {
-		eventConsumer.registerHandlers(Collections.singletonList(MQEvent.ESS_CONTRACT_DOWNLOAD_PDF.getEventCode()),
-			this);
+		eventConsumer.registerHandler(InternalMQEvent.ESS_CONTRACT_DOWNLOAD_PDF.getEventCode(), this);
 	}
 
 }
diff --git a/ess/ess-server/src/main/java/cn/axzo/nanopart/ess/server/ess/mq/EssBroadcaster.java b/ess/ess-server/src/main/java/cn/axzo/nanopart/ess/server/ess/mq/EssBroadcaster.java
index d6f0c9e3..2669fb30 100644
--- a/ess/ess-server/src/main/java/cn/axzo/nanopart/ess/server/ess/mq/EssBroadcaster.java
+++ b/ess/ess-server/src/main/java/cn/axzo/nanopart/ess/server/ess/mq/EssBroadcaster.java
@@ -47,7 +47,7 @@ public class EssBroadcaster {
 		message.setRetryDownload(retryDownload);
 		// @formatter:off
 		eventProducer.send(Event.builder()
-				.eventCode(MQEvent.ESS_CONTRACT_DOWNLOAD_PDF.getEventCode())
+				.eventCode(InternalMQEvent.ESS_CONTRACT_DOWNLOAD_PDF.getEventCode())
 				.shardingKey(contract.getEssContractId())
 				.targetId(contract.getEssContractId())
 				.targetType("ess-contract")
diff --git a/ess/ess-server/src/main/java/cn/axzo/nanopart/ess/server/ess/mq/InternalMQEvent.java b/ess/ess-server/src/main/java/cn/axzo/nanopart/ess/server/ess/mq/InternalMQEvent.java
new file mode 100644
index 00000000..5045b7fd
--- /dev/null
+++ b/ess/ess-server/src/main/java/cn/axzo/nanopart/ess/server/ess/mq/InternalMQEvent.java
@@ -0,0 +1,35 @@
+
+package cn.axzo.nanopart.ess.server.ess.mq;
+
+import java.util.Arrays;
+
+import cn.axzo.framework.rocketmq.Event;
+import lombok.Getter;
+
+/**
+ * @Author zr
+ * @Date 2024/3/19 18:01
+ * @Description
+ **/
+@Getter
+public enum InternalMQEvent {
+
+	ESS_CONTRACT_DOWNLOAD_PDF("nanopart", "ess-contract-download-pdf", "腾讯电子签合同下载PDF"),
+
+	;
+	private final String model;
+	private final String tag;
+	private final String desc;
+	private final Event.EventCode eventCode;
+
+	InternalMQEvent(String model, String tag, String desc) {
+		this.eventCode = Event.EventCode.builder().module(model).name(tag).build();
+		this.model = model;
+		this.tag = tag;
+		this.desc = desc;
+	}
+
+	public static InternalMQEvent getByName(String name) {
+		return Arrays.stream(InternalMQEvent.values()).filter(item -> item.name().equals(name)).findFirst().orElse(null);
+	}
+}
diff --git a/ess/ess-server/src/main/java/cn/axzo/nanopart/ess/server/ess/mq/PersonResignHandler.java b/ess/ess-server/src/main/java/cn/axzo/nanopart/ess/server/ess/mq/PersonResignHandler.java
index a79215c5..d1d1436a 100644
--- a/ess/ess-server/src/main/java/cn/axzo/nanopart/ess/server/ess/mq/PersonResignHandler.java
+++ b/ess/ess-server/src/main/java/cn/axzo/nanopart/ess/server/ess/mq/PersonResignHandler.java
@@ -1,8 +1,6 @@
 
 package cn.axzo.nanopart.ess.server.ess.mq;
 
-import java.util.Collections;
-
 import org.springframework.beans.factory.InitializingBean;
 import org.springframework.stereotype.Component;
 
@@ -76,7 +74,6 @@ public class PersonResignHandler implements EventHandler, InitializingBean {
 
 	@Override
 	public void afterPropertiesSet() {
-		eventConsumer.registerHandlers(Collections.singletonList(Event.EventCode.from("org-user:org-user-movement")),
-			this);
+		eventConsumer.registerHandler(Event.EventCode.from("org-user:org-user-movement"), this);
 	}
 }