add additional spring configuration metadata

spring-cloud-alibaba-nacos-config/pom.xml

@@ -45,7 +45,12 @@
             <scope>provided</scope>
             <optional>true</optional>
         </dependency>
-
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-configuration-processor</artifactId>
+            <scope>provided</scope>
+            <optional>true</optional>
+        </dependency>
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot</artifactId>

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

@@ -35,12 +35,12 @@ public class NacosConfigProperties {
 	private String serverAddr;
 
 	/**
-	 * nacos config encode
+	 * encode for nacos config content.
 	 */
 	private String encode;
 
 	/**
-	 * nacos config group
+	 * nacos config group, group is config data meta info.
 	 */
 	private String group = "DEFAULT_GROUP";
 
@@ -49,37 +49,37 @@ public class NacosConfigProperties {
 	 */
 	private String prefix;
 	/**
-	 * nacos config dataId contentType
+	 * the content type of nacos config content.
 	 */
 	private String contentType = "properties";
 
 	/**
-	 * timeout to get configuration
+	 * timeout for get config from nacos.
 	 */
 	private int timeout = 3000;
 
 	/**
-	 *  endpoint for Nacos
+	 *  endpoint for Nacos, the domain name of a service, through which the server address can be dynamically obtained.
 	 */
 	private String endpoint;
 
 	/**
-	 * Nacos namespace
+	 * namespace, separation configuration of different environments.
 	 */
 	private String namespace;
 
 	/**
-	 * Nacos access key
+	 * access key for namespace.
 	 */
 	private String accessKey;
 
 	/**
-	 * Nacos secret key
+	 * secret key for namespace.
 	 */
 	private String secretKey;
 
 	/**
-	 * nacos config context path
+	 * context path for nacos config server.
 	 */
 	private String contextPath;
 

spring-cloud-alibaba-nacos-config/src/main/resources/META-INF/additional-spring-configuration-metadata.json

@@ -1,32 +1,20 @@
-{
-  "properties": [
-    {
-      "name": "spring.cloud.nacos.config.server-addr",
-      "type": "java.lang.String",
-      "defaultValue": "",
-      "description": "nacos config server address."
-    },
-    {
-      "name": "spring.cloud.nacos.config.timeout",
-      "type": "java.lang.Long",
-      "defaultValue": 3000,
-      "description": "sentinel api port."
-    },
-    {
-      "name": "spring.cloud.sentinel.dashboard",
-      "type": "java.lang.String",
-      "description": "sentinel dashboard address, won't try to connect dashboard when address is empty."
-    },
-    {
-      "name": "spring.cloud.sentinel.filter.order",
-      "type": "java.lang.Integer",
-      "defaultValue": "Integer.MIN_VALUE",
-      "description": "Sentinel filter chain order, will be set to FilterRegistrationBean."
-    },
-    {
-      "name": "spring.cloud.sentinel.filter.urlPatterns",
-      "type": "java.util.List",
-      "description": "URL pattern for Sentinel filter, default contains '/*'."
-    }
-  ]
-}
+{"properties": [
+  {
+    "name": "spring.cloud.nacos.config.encode",
+    "type": "java.lang.String",
+    "defaultValue": "UTF-8",
+    "description": "default encode for nacos config content."
+  },
+  {
+    "name": "spring.cloud.nacos.config.prefix",
+    "type": "java.lang.String",
+    "defaultValue": "${spring.application.name}",
+    "description": "the prefix of dataId, nacos config data meta info. dataId = prefix + '-' + ${spring.active.profile} + `-` + ${spring.cloud.nacos.config.content-type}."
+  },
+  {
+    "name": "spring.cloud.nacos.config.content-type",
+    "type": "java.lang.String",
+    "defaultValue": "properties",
+    "description": "the content type of nacos config content, only support properties now."
+  }
+]}