diff --git a/docs/content/getting-started/get-started.md b/docs/content/getting-started/get-started.md
index 800d7b9..68622a1 100644
--- a/docs/content/getting-started/get-started.md
+++ b/docs/content/getting-started/get-started.md
@@ -41,7 +41,7 @@ public interface PostService
 ---
 
 ```java
-private final LightCallConfig config = LightCallConfig.create("https://jsonplaceholder.typicode.com");
+private final LightCallConfig config = LightCallConfig.create("http://mockaroo.devlive.org");
 private final PostService service = LightCall.create(PostService.class, config);
 
 List<Post> posts = service.getPosts();
diff --git a/docs/content/getting-started/processor.md b/docs/content/getting-started/processor.md
index 562ec38..d78b8c5 100644
--- a/docs/content/getting-started/processor.md
+++ b/docs/content/getting-started/processor.md
@@ -97,6 +97,6 @@ public class OptionsProcessor
 ### 注册处理器
 
 ```java
-LightCallConfig config = LightCallConfig.create("https://jsonplaceholder.typicode.com")
+LightCallConfig config = LightCallConfig.create("http://mockaroo.devlive.org")
         .addProcessor(OptionsProcessor.class);
 ```
\ No newline at end of file
diff --git a/docs/content/usage/error.md b/docs/content/usage/error.md
index c1d6711..c505d3f 100644
--- a/docs/content/usage/error.md
+++ b/docs/content/usage/error.md
@@ -21,7 +21,7 @@ LightCall 支持错误处理。
 !!!
 
 ```java
-LightCallConfig config = LightCallConfig.create("https://jsonplaceholder.typicode.com")
+LightCallConfig config = LightCallConfig.create("http://mockaroo.devlive.org")
             .addErrorHandler(new DefaultErrorHandler());
 ```
 
diff --git a/docs/content/usage/interceptor.md b/docs/content/usage/interceptor.md
index 7505f14..988d98c 100644
--- a/docs/content/usage/interceptor.md
+++ b/docs/content/usage/interceptor.md
@@ -21,7 +21,7 @@ LightCall 支持拦截器，可以在请求和响应之前做一些操作
 !!!
 
 ```java
-LightCallConfig config = LightCallConfig.create("https://jsonplaceholder.typicode.com")
+LightCallConfig config = LightCallConfig.create("http://mockaroo.devlive.org")
             .addInterceptor(new LoggingInterceptor());
 ```
 
diff --git a/lightcall-core/src/test/java/org/devlive/lightcall/example/PostModel.java b/lightcall-core/src/test/java/org/devlive/lightcall/example/PostModel.java
index bcf1ba8..1daefc6 100644
--- a/lightcall-core/src/test/java/org/devlive/lightcall/example/PostModel.java
+++ b/lightcall-core/src/test/java/org/devlive/lightcall/example/PostModel.java
@@ -1,5 +1,6 @@
 package org.devlive.lightcall.example;
 
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import lombok.Data;
 
@@ -7,6 +8,7 @@
 
 @Data
 @JsonInclude(JsonInclude.Include.NON_NULL)
+@JsonIgnoreProperties(ignoreUnknown = true)
 public class PostModel
         implements Serializable
 {
diff --git a/lightcall-core/src/test/java/org/devlive/lightcall/example/delete/DeleteServiceTest.java b/lightcall-core/src/test/java/org/devlive/lightcall/example/delete/DeleteServiceTest.java
index 3e14adf..fb03f70 100644
--- a/lightcall-core/src/test/java/org/devlive/lightcall/example/delete/DeleteServiceTest.java
+++ b/lightcall-core/src/test/java/org/devlive/lightcall/example/delete/DeleteServiceTest.java
@@ -7,7 +7,7 @@
 
 class DeleteServiceTest
 {
-    private final LightCallConfig config = LightCallConfig.create("https://jsonplaceholder.typicode.com");
+    private final LightCallConfig config = LightCallConfig.create("http://mockaroo.devlive.org");
     private final DeleteService service = LightCall.create(DeleteService.class, config);
 
     @Test
diff --git a/lightcall-core/src/test/java/org/devlive/lightcall/example/get/GetServiceTest.java b/lightcall-core/src/test/java/org/devlive/lightcall/example/get/GetServiceTest.java
index fd7818e..90ae69c 100644
--- a/lightcall-core/src/test/java/org/devlive/lightcall/example/get/GetServiceTest.java
+++ b/lightcall-core/src/test/java/org/devlive/lightcall/example/get/GetServiceTest.java
@@ -7,7 +7,7 @@
 
 class GetServiceTest
 {
-    private final LightCallConfig config = LightCallConfig.create("https://jsonplaceholder.typicode.com");
+    private final LightCallConfig config = LightCallConfig.create("http://mockaroo.devlive.org");
     private final GetService service = LightCall.create(GetService.class, config);
 
     @Test
diff --git a/lightcall-core/src/test/java/org/devlive/lightcall/example/head/HeadServiceTest.java b/lightcall-core/src/test/java/org/devlive/lightcall/example/head/HeadServiceTest.java
index 2210d36..b47c1e9 100644
--- a/lightcall-core/src/test/java/org/devlive/lightcall/example/head/HeadServiceTest.java
+++ b/lightcall-core/src/test/java/org/devlive/lightcall/example/head/HeadServiceTest.java
@@ -7,7 +7,7 @@
 
 class HeadServiceTest
 {
-    private final LightCallConfig config = LightCallConfig.create("https://jsonplaceholder.typicode.com");
+    private final LightCallConfig config = LightCallConfig.create("http://mockaroo.devlive.org");
     private final HeadService service = LightCall.create(HeadService.class, config);
 
     @Test
diff --git a/lightcall-core/src/test/java/org/devlive/lightcall/example/interceptor/LightCallInterceptorTest.java b/lightcall-core/src/test/java/org/devlive/lightcall/example/interceptor/LightCallInterceptorTest.java
index 3a17a57..6c2ce66 100644
--- a/lightcall-core/src/test/java/org/devlive/lightcall/example/interceptor/LightCallInterceptorTest.java
+++ b/lightcall-core/src/test/java/org/devlive/lightcall/example/interceptor/LightCallInterceptorTest.java
@@ -8,7 +8,7 @@
 
 class LightCallInterceptorTest
 {
-    private final LightCallConfig config = LightCallConfig.create("https://jsonplaceholder.typicode.com")
+    private final LightCallConfig config = LightCallConfig.create("http://mockaroo.devlive.org")
             .addInterceptor(new LoggingInterceptor());
     private final GetService service = LightCall.create(GetService.class, config);
 
diff --git a/lightcall-core/src/test/java/org/devlive/lightcall/example/options/OptionsServiceTest.java b/lightcall-core/src/test/java/org/devlive/lightcall/example/options/OptionsServiceTest.java
index 08103cb..50db433 100644
--- a/lightcall-core/src/test/java/org/devlive/lightcall/example/options/OptionsServiceTest.java
+++ b/lightcall-core/src/test/java/org/devlive/lightcall/example/options/OptionsServiceTest.java
@@ -7,7 +7,7 @@
 
 class OptionsServiceTest
 {
-    private final LightCallConfig config = LightCallConfig.create("https://jsonplaceholder.typicode.com");
+    private final LightCallConfig config = LightCallConfig.create("http://mockaroo.devlive.org");
     private final OptionsService service = LightCall.create(OptionsService.class, config);
 
     @Test
diff --git a/lightcall-core/src/test/java/org/devlive/lightcall/example/part/PartService.java b/lightcall-core/src/test/java/org/devlive/lightcall/example/part/PartService.java
index 4f6e359..5ba2b11 100644
--- a/lightcall-core/src/test/java/org/devlive/lightcall/example/part/PartService.java
+++ b/lightcall-core/src/test/java/org/devlive/lightcall/example/part/PartService.java
@@ -8,5 +8,5 @@
 public interface PartService
 {
     @Post("/upload")
-    String apply(@Part("file") File file);
+    Object apply(@Part("file") File file);
 }
diff --git a/lightcall-core/src/test/java/org/devlive/lightcall/example/part/PartServiceTest.java b/lightcall-core/src/test/java/org/devlive/lightcall/example/part/PartServiceTest.java
index a6667f0..c120862 100644
--- a/lightcall-core/src/test/java/org/devlive/lightcall/example/part/PartServiceTest.java
+++ b/lightcall-core/src/test/java/org/devlive/lightcall/example/part/PartServiceTest.java
@@ -12,7 +12,7 @@
 class PartServiceTest
 {
     // 使用一个支持文件上传的测试服务
-    private final LightCallConfig config = LightCallConfig.create("https://httpbin.org");
+    private final LightCallConfig config = LightCallConfig.create("http://mockaroo.devlive.org");
     private final PartService service = LightCall.create(PartService.class, config);
 
     @Test
@@ -24,7 +24,7 @@ void testFileUpload(@TempDir Path tempDir)
         testFile.createNewFile();
 
         // 测试文件上传
-        String response = service.apply(testFile);
+        Object response = service.apply(testFile);
         Assertions.assertNotNull(response);
     }
 }
\ No newline at end of file
diff --git a/lightcall-core/src/test/java/org/devlive/lightcall/example/patch/PatchServiceTest.java b/lightcall-core/src/test/java/org/devlive/lightcall/example/patch/PatchServiceTest.java
index a4ec226..b04c9af 100644
--- a/lightcall-core/src/test/java/org/devlive/lightcall/example/patch/PatchServiceTest.java
+++ b/lightcall-core/src/test/java/org/devlive/lightcall/example/patch/PatchServiceTest.java
@@ -8,7 +8,7 @@
 
 class PatchServiceTest
 {
-    private final LightCallConfig config = LightCallConfig.create("https://jsonplaceholder.typicode.com");
+    private final LightCallConfig config = LightCallConfig.create("http://mockaroo.devlive.org");
     private final PatchService service = LightCall.create(PatchService.class, config);
 
     @Test
diff --git a/lightcall-core/src/test/java/org/devlive/lightcall/example/post/PostServiceTest.java b/lightcall-core/src/test/java/org/devlive/lightcall/example/post/PostServiceTest.java
index 699f6dc..6ccbd7d 100644
--- a/lightcall-core/src/test/java/org/devlive/lightcall/example/post/PostServiceTest.java
+++ b/lightcall-core/src/test/java/org/devlive/lightcall/example/post/PostServiceTest.java
@@ -8,7 +8,7 @@
 
 class PostServiceTest
 {
-    private final LightCallConfig config = LightCallConfig.create("https://jsonplaceholder.typicode.com");
+    private final LightCallConfig config = LightCallConfig.create("http://mockaroo.devlive.org");
     private final PostService service = LightCall.create(PostService.class, config);
 
     @Test
diff --git a/lightcall-core/src/test/java/org/devlive/lightcall/example/put/PutServiceTest.java b/lightcall-core/src/test/java/org/devlive/lightcall/example/put/PutServiceTest.java
index 2a51c8a..4475083 100644
--- a/lightcall-core/src/test/java/org/devlive/lightcall/example/put/PutServiceTest.java
+++ b/lightcall-core/src/test/java/org/devlive/lightcall/example/put/PutServiceTest.java
@@ -8,7 +8,7 @@
 
 class PutServiceTest
 {
-    private final LightCallConfig config = LightCallConfig.create("https://jsonplaceholder.typicode.com");
+    private final LightCallConfig config = LightCallConfig.create("http://mockaroo.devlive.org");
     private final PutService service = LightCall.create(PutService.class, config);
 
     @Test