feat(server): Add FLOAT and DOUBLE types to JsonSchemaDataType and implement fromJavaType method for type conversion

Author: codeboyzhou

src/main/java/com/github/codeboyzhou/mcp/declarative/enums/JsonSchemaDataType.java

@@ -3,6 +3,8 @@
 public enum JsonSchemaDataType {
   STRING("string"),
   NUMBER("number"),
+  FLOAT("number"),
+  DOUBLE("number"),
   INTEGER("integer"),
   BOOLEAN("boolean"),
   OBJECT("object"),
@@ -17,4 +19,14 @@ public enum JsonSchemaDataType {
   public String getType() {
     return type;
   }
+
+  public static JsonSchemaDataType fromJavaType(Class<?> javaType) {
+    JsonSchemaDataType[] values = values();
+    for (JsonSchemaDataType dataType : values) {
+      if (dataType.name().equalsIgnoreCase(javaType.getSimpleName())) {
+        return dataType;
+      }
+    }
+    return STRING;
+  }
 }

src/main/java/com/github/codeboyzhou/mcp/declarative/server/component/McpServerToolFactory.java

@@ -130,7 +130,7 @@ private Map<String, Object> createJsonSchemaDefinition(Class<?> definitionClass)
       }
 
       Map<String, Object> fieldProperties = new HashMap<>();
-      fieldProperties.put("type", field.getType().getSimpleName().toLowerCase());
+      fieldProperties.put("type", JsonSchemaDataType.fromJavaType(field.getType()).getType());
       fieldProperties.put("description", resolveComponentAttributeValue(property.description()));
 
       final String fieldName = Strings.defaultIfBlank(property.name(), field.getName());