feat: SimpleResAdvice 设置统一的 Content-Type

Author: cadecode

src/main/java/info/cadecode/simple/common/response/SimpleResAdvice.java

@@ -1,6 +1,7 @@
 package info.cadecode.simple.common.response;
 
 import org.springframework.core.MethodParameter;
+import org.springframework.http.HttpHeaders;
 import org.springframework.http.MediaType;
 import org.springframework.http.server.ServerHttpRequest;
 import org.springframework.http.server.ServerHttpResponse;
@@ -23,6 +24,10 @@ public boolean supports(MethodParameter returnType, Class converterType) {
     public Object beforeBodyWrite(Object body, MethodParameter returnType, MediaType selectedContentType,
                                   Class selectedConverterType, ServerHttpRequest request, ServerHttpResponse response) {
 
+        // 设置统一的 Content-Type
+        HttpHeaders headers = response.getHeaders();
+        headers.setContentType(MediaType.APPLICATION_JSON);
+
         if (body instanceof SimpleRes.ResBuilder) {
             return body;
         }