diff --git a/rest-proxy-core/src/main/java/group/flyfish/rest/constants/RestConstants.java b/rest-proxy-core/src/main/java/group/flyfish/rest/constants/RestConstants.java
index 7161203..dba8d41 100644
--- a/rest-proxy-core/src/main/java/group/flyfish/rest/constants/RestConstants.java
+++ b/rest-proxy-core/src/main/java/group/flyfish/rest/constants/RestConstants.java
@@ -4,6 +4,7 @@ import group.flyfish.rest.core.ThreadPoolManager;
 import group.flyfish.rest.core.builder.TypedMapBuilder;
 import group.flyfish.rest.core.resolver.*;
 import group.flyfish.rest.enums.HttpMethod;
+import group.flyfish.rest.enums.ResponseType;
 import org.apache.http.client.config.RequestConfig;
 
 import java.util.Map;
@@ -206,4 +207,11 @@ public interface RestConstants {
     static TypedMapBuilder<HttpMethod, HttpMethodResolver> resolverBuilder() {
         return TypedMapBuilder.builder();
     }
+
+    // 响应类型映射
+    Map<String, ResponseType> RESPONSE_TYPE_MAP = TypedMapBuilder.<String, ResponseType>builder()
+            .with(TypeConstants.STRING, ResponseType.TEXT)
+            .with(TypeConstants.BYTE_ARRAY, ResponseType.BINARY)
+            .build();
+
 }
diff --git a/rest-proxy-core/src/main/java/group/flyfish/rest/constants/TypeConstants.java b/rest-proxy-core/src/main/java/group/flyfish/rest/constants/TypeConstants.java
new file mode 100644
index 0000000..32fa32a
--- /dev/null
+++ b/rest-proxy-core/src/main/java/group/flyfish/rest/constants/TypeConstants.java
@@ -0,0 +1,13 @@
+package group.flyfish.rest.constants;
+
+/**
+ * 类型常量
+ *
+ * @author wangyu
+ */
+public interface TypeConstants {
+
+    String STRING = "java.lang.String";
+
+    String BYTE_ARRAY = "[B";
+}
diff --git a/rest-proxy-core/src/main/java/group/flyfish/rest/core/client/DefaultRestClient.java b/rest-proxy-core/src/main/java/group/flyfish/rest/core/client/DefaultRestClient.java
index 04ca93c..e8771f1 100644
--- a/rest-proxy-core/src/main/java/group/flyfish/rest/core/client/DefaultRestClient.java
+++ b/rest-proxy-core/src/main/java/group/flyfish/rest/core/client/DefaultRestClient.java
@@ -2,6 +2,7 @@ package group.flyfish.rest.core.client;
 
 import com.fasterxml.jackson.core.type.TypeReference;
 import com.fasterxml.jackson.databind.JavaType;
+import group.flyfish.rest.constants.RestConstants;
 import group.flyfish.rest.core.exception.RestClientException;
 import group.flyfish.rest.core.factory.HttpClientFactoryBean;
 import group.flyfish.rest.core.factory.HttpClientProvider;
@@ -214,7 +215,7 @@ final class DefaultRestClient implements RestClient {
     @Nullable
     @Override
     public <T> T execute(Class<T> clazz) {
-        this.responseType = ResponseType.OBJECT;
+        this.responseType = resolveType(clazz);
         this.resultClass = clazz;
         try {
             return innerExecute();
@@ -234,7 +235,7 @@ final class DefaultRestClient implements RestClient {
     @Nullable
     @Override
     public <T> T execute(JavaType type) {
-        this.responseType = ResponseType.OBJECT;
+        this.responseType = resolveType(type.getRawClass());
         this.resultType = type;
         try {
             return innerExecute();
@@ -289,6 +290,7 @@ final class DefaultRestClient implements RestClient {
                 HttpEntity entity = response.getEntity();
                 if (consumer != null) {
                     consumer.accept(entity);
+                    return null;
                 }
                 return resolveResponse(entity);
             } else {
@@ -305,6 +307,16 @@ final class DefaultRestClient implements RestClient {
         return null;
     }
 
+    /**
+     * 解析目标类型
+     *
+     * @param clazz 简单类型
+     * @return 响应类型
+     */
+    private ResponseType resolveType(Class<?> clazz) {
+        return RestConstants.RESPONSE_TYPE_MAP.getOrDefault(clazz.getName(), ResponseType.OBJECT);
+    }
+
     /**
      * 解析结果
      *
diff --git a/rest-proxy-core/src/main/java/group/flyfish/rest/utils/JacksonUtil.java b/rest-proxy-core/src/main/java/group/flyfish/rest/utils/JacksonUtil.java
index 3fe00e8..5e8c1e1 100644
--- a/rest-proxy-core/src/main/java/group/flyfish/rest/utils/JacksonUtil.java
+++ b/rest-proxy-core/src/main/java/group/flyfish/rest/utils/JacksonUtil.java
@@ -77,9 +77,6 @@ public final class JacksonUtil {
         if (null == json || "".equals(json)) {
             return null;
         }
-        if (String.class.isAssignableFrom(clazz)) {
-            return DataUtils.cast(json);
-        }
         try {
             return mapper.readValue(json, clazz);
         } catch (IOException e) {
@@ -89,9 +86,6 @@ public final class JacksonUtil {
     }
 
     public static <T> T fromJson(final String json, JavaType type) {
-        if (type.isTypeOrSubTypeOf(String.class)) {
-            return DataUtils.cast(json);
-        }
         if (null == json || "".equals(json)) {
             return null;
         }
diff --git a/rest-proxy-core/src/test/java/group/flyfish/rest/MultipartTest.java b/rest-proxy-core/src/test/java/group/flyfish/rest/MultipartTest.java
index 432c681..82dd7c2 100644
--- a/rest-proxy-core/src/test/java/group/flyfish/rest/MultipartTest.java
+++ b/rest-proxy-core/src/test/java/group/flyfish/rest/MultipartTest.java
@@ -48,6 +48,12 @@ public class MultipartTest {
         }
     }
 
+    @Test
+    public void download() {
+        byte[] data = testRestService.downloadByte();
+        System.out.println(data.length);
+    }
+
     @RestService(baseUrl = "http://localhost:8999", timeout = 500)
     public interface TestRestService {
 
@@ -56,5 +62,8 @@ public class MultipartTest {
 
         @RestApi(uri = "/files", method = HttpMethod.POST)
         String uploadAnno(@RestPart("fbl") InputStream file, @RestPart.Filename("fbl") String name);
+
+        @RestApi(uri = "/files")
+        byte[] downloadByte();
     }
 }