Fix/chinese encoding

src/main/java/io/github/robothy/sdwebui/sdk/services/DefaultExtraImageService.java

@@ -16,6 +16,7 @@
 import org.apache.hc.core5.http.io.entity.StringEntity;
 
 import java.io.IOException;
+import java.nio.charset.StandardCharsets;
 
 public class DefaultExtraImageService implements ExtraImage {
 
@@ -51,7 +52,7 @@ HttpEntity buildExtraImageRequestEntity(ExtraImageOptions options) {
         try {
             String payload = this.beanContainer.getBean(ObjectMapper.class)
                     .writeValueAsString(options);
-            return new StringEntity(payload);
+            return new StringEntity(payload,StandardCharsets.UTF_8);
         } catch (JsonProcessingException e) {
             throw new RuntimeException(e);
         }

src/main/java/io/github/robothy/sdwebui/sdk/services/DefaultImage2ImageService.java

@@ -16,6 +16,7 @@
 import org.apache.hc.core5.http.io.entity.StringEntity;
 
 import java.io.IOException;
+import java.nio.charset.StandardCharsets;
 
 public class DefaultImage2ImageService implements Image2Image {
 
@@ -40,7 +41,7 @@ public Image2ImageResult img2img(Image2ImageOptions options) {
   ClassicHttpRequest buildRequest(Image2ImageOptions options) {
     String url = container.getBean(SdWebuiOptions.class).getEndpoint() + IMG2IMG_PATH;
     ClassicHttpRequest request = new HttpPost(url);
-    request.setEntity(new StringEntity(JsonUtils.toJson(options)));
+    request.setEntity(new StringEntity(JsonUtils.toJson(options), StandardCharsets.UTF_8));
     request.addHeader(HttpHeaders.CONTENT_TYPE, "application/json");
     return request;
   }

src/main/java/io/github/robothy/sdwebui/sdk/services/DefaultTxt2ImageService.java

@@ -17,6 +17,7 @@
 import org.apache.hc.core5.http.io.entity.StringEntity;
 
 import java.io.IOException;
+import java.nio.charset.StandardCharsets;
 
 public class DefaultTxt2ImageService implements Txt2Image {
 
@@ -52,7 +53,7 @@ HttpEntity buildTxt2ImageRequestEntity(Txt2ImageOptions options) {
     try {
       String payload = this.beanContainer.getBean(ObjectMapper.class)
         .writeValueAsString(options);
-      return new StringEntity(payload);
+      return new StringEntity(payload,StandardCharsets.UTF_8);
     } catch (JsonProcessingException e) {
       throw new RuntimeException(e);
     }