fix: restore response fallback and secure dependencies

pom.xml

@@ -45,8 +45,8 @@
         <!-- Dependency versions -->
         <commons-lang3.version>3.20.0</commons-lang3.version>
         <fastjson.version>2.0.62</fastjson.version>
-        <guava.version>31.0.1-jre</guava.version>
-        <jackson.version>2.17.2</jackson.version>
+        <guava.version>33.8.0-jre</guava.version>
+        <jackson.version>2.18.12</jackson.version>
         <junit-jupiter.version>6.1.0</junit-jupiter.version>
         <lombok.version>1.18.46</lombok.version>
         <okhttp.version>4.9.3</okhttp.version>
@@ -111,6 +111,7 @@
 
     <!-- 项目依赖（dependencies） -->
     <dependencies>
+        <dependency><groupId>org.junit.jupiter</groupId><artifactId>junit-jupiter</artifactId><version>${junit-jupiter.version}</version><scope>test</scope></dependency>
         <!-- For Lombok -->
         <dependency>
             <groupId>org.projectlombok</groupId>

src/main/java/com/faceplusplus/spring/boot/FaceppOkHttp3Template.java

@@ -862,6 +862,6 @@ public ObjectMapper getObjectMapper() {
 	}
 
     private <T> T safeInstantiate(Class<T> cls) {
-        try { return safeInstantiate(cls); } catch (Exception e) { return null; }
+        try { return cls.getDeclaredConstructor().newInstance(); } catch (ReflectiveOperationException | SecurityException e) { return null; }
     }
 }

src/test/java/com/faceplusplus/spring/boot/FaceppOkHttp3TemplateTest.java

@@ -147,11 +147,9 @@ void shouldReadValueFromJson() {
     }
 
     @Test
-    void shouldThrowOnInvalidJsonDueToRecursiveSafeInstantiate() {
+    void shouldReturnDefaultResponseOnInvalidJson() {
         String json = "invalid json";
-        assertThrows(StackOverflowError.class, () -> {
-            template.readValue(json, FaceppResponse.class);
-        });
+        assertNotNull(template.readValue(json, FaceppResponse.class));
     }
 
     // Test various doRequest overloads

src/test/java/com/faceplusplus/spring/boot/ResponseFallbackTest.java

@@ -0,0 +1,33 @@
+package com.faceplusplus.spring.boot;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.faceplusplus.spring.boot.resp.FaceppResponse;
+import okhttp3.*;
+import org.junit.jupiter.api.Test;
+import static org.junit.jupiter.api.Assertions.*;
+class ResponseFallbackTest {
+ private FaceppOkHttp3Template template(int code, String body) {
+  OkHttpClient client = new OkHttpClient.Builder().addInterceptor(chain -> new Response.Builder()
+   .request(chain.request()).protocol(Protocol.HTTP_1_1).code(code).message("test")
+   .body(ResponseBody.create(MediaType.parse("application/json"), body)).build()).build();
+  return new FaceppOkHttp3Template(client, new ObjectMapper(), new FaceppProperties());
+ }
+ @Test void invalidJsonReturnsDefaultResponse() throws Exception {
+  FaceppResponse result = template(200,"invalid json").get("http://localhost/test",FaceppResponse.class);
+  assertNotNull(result); assertEquals(200,result.getCode());
+ }
+ @Test void unsuccessfulHttpReturnsStatus() throws Exception {
+  FaceppResponse result = template(503,"unavailable").get("http://localhost/test",FaceppResponse.class);
+  assertNotNull(result); assertEquals(503,result.getCode());
+ }
+ @Test void successfulResponsePreservesFields() throws Exception {
+  FaceppResponse result = template(200,"{\"request_id\":\"local-test\"}").get("http://localhost/test",FaceppResponse.class);
+  assertEquals(200,result.getCode()); assertEquals("local-test",result.getRequestId());
+ }
+ public abstract static class AbstractResponse extends FaceppResponse {}
+ public static class NoDefaultResponse extends FaceppResponse { public NoDefaultResponse(String value) {} }
+ @Test void unconstructibleResponsesReturnNull() throws Exception {
+  assertNull(template(503,"bad").get("http://localhost/test",AbstractResponse.class));
+  assertNull(template(503,"bad").get("http://localhost/test",NoDefaultResponse.class));
+  assertNull(template(200,"bad").readValue("bad",AbstractResponse.class));
+ }
+}