[Improvement]Support multiple receivers.

common/src/main/java/org/apache/hertzbeat/common/entity/manager/JsonLongListAttributeConverter.java

@@ -0,0 +1,32 @@
+package org.apache.hertzbeat.common.entity.manager;
+
+import com.fasterxml.jackson.core.type.TypeReference;
+import jakarta.persistence.AttributeConverter;
+import org.apache.commons.lang3.StringUtils;
+import org.apache.hertzbeat.common.util.JsonUtil;
+import java.util.List;
+
+
+/**
+ * json str to id list
+ */
+
+public class JsonLongListAttributeConverter implements AttributeConverter<List<Long>, String> {
+    @Override
+    public String convertToDatabaseColumn(List<Long> attribute) {
+        return JsonUtil.toJson(attribute);
+
+    }
+
+    @Override
+    public List<Long> convertToEntityAttribute(String dbData) {
+        TypeReference<List<Long>> typeReference = new TypeReference<>() {};
+        List<Long> longList = JsonUtil.fromJson(dbData, typeReference);
+        if (longList == null && !dbData.isEmpty()) {
+            if (StringUtils.isNumeric(dbData)){
+                return List.of(Long.parseLong(dbData));
+            }
+            else throw new NumberFormatException("String convert to Long error");
+        }else return longList;
+    }
+}

common/src/main/java/org/apache/hertzbeat/common/entity/manager/JsonStringListAttributeConverter.java

@@ -0,0 +1,28 @@
+package org.apache.hertzbeat.common.entity.manager;
+
+import com.fasterxml.jackson.core.type.TypeReference;
+import jakarta.persistence.AttributeConverter;
+import org.apache.hertzbeat.common.util.JsonUtil;
+
+import java.util.List;
+
+
+/**
+ * Convert the list of strings to a JSON string
+ */
+public class JsonStringListAttributeConverter implements AttributeConverter<List<String>, String> {
+    @Override
+    public String convertToDatabaseColumn(List<String> attribute) {
+        return JsonUtil.toJson(attribute);
+
+    }
+
+    @Override
+    public List<String> convertToEntityAttribute(String dbData) {
+        TypeReference<List<String>> typeReference = new TypeReference<>() {};
+        List<String> stringList = JsonUtil.fromJson(dbData, typeReference);
+        if (stringList == null && !dbData.isEmpty()) {
+            return List.of(dbData);
+        }else return stringList;
+    }
+}

common/src/main/java/org/apache/hertzbeat/common/entity/manager/JsonTagListAttributeConverter.java

@@ -37,18 +37,19 @@ public String convertToDatabaseColumn(List<TagItem> attribute) {
 
     @Override
     public List<TagItem> convertToEntityAttribute(String dbData) {
-        try {
-            TypeReference<List<TagItem>> typeReference = new TypeReference<>() {};
-            return JsonUtil.fromJson(dbData, typeReference);
-        } catch (Exception e) {
-            // history data handler
-            TypeReference<Map<String, String>> typeReference = new TypeReference<>() {};
-            Map<String, String> map = JsonUtil.fromJson(dbData, typeReference);
+        TypeReference<List<TagItem>> typeReference = new TypeReference<>() {};
+        List<TagItem> tagItems = JsonUtil.fromJson(dbData, typeReference);
+        if (tagItems == null) {
+            TypeReference<Map<String, String>> mapTypeReference = new TypeReference<>() {};
+            Map<String, String> map = JsonUtil.fromJson(dbData, mapTypeReference);
             if (map != null) {
                 return map.entrySet().stream().map(entry -> new TagItem(entry.getKey(), entry.getValue())).collect(Collectors.toList());
             } else {
                 return null;
             }
+        } else {
+            return tagItems;
         }
+
     }
 }

common/src/main/java/org/apache/hertzbeat/common/entity/manager/NoticeRule.java

@@ -69,14 +69,14 @@ public class NoticeRule {
             description = "接收人ID",
             example = "4324324", accessMode = READ_WRITE)
     @NotNull
-    private Long receiverId;
+    @Convert(converter = JsonLongListAttributeConverter.class)
+    private List<Long> receiverId;
 
     @Schema(title = "Recipient identification",
             description = "接收人标识",
             example = "tom", accessMode = READ_WRITE)
-    @Length(max = 100)
-    @NotNull
-    private String receiverName;
+    @Convert(converter = JsonStringListAttributeConverter.class)
+    private List<String> receiverName;
 
     @Schema(title = "Template ID",
             description = "模板ID",