fix: update README.

README.md

@@ -24,6 +24,80 @@ Install-Package Aeex.LLMService.Baidu.ErnieVilg
 
 ## 使用
 
+1. 在`ConfigureService`方法中添加依赖注入
+
+```
+public void ConfigureServices(IServiceCollection services, IConfiguration config){
+    //....
+    
+    // Ensure HttpContext injected. It will be accessed in Chat service.
+    services.AddHttpContextAccessor();
+
+    // inject image storage provider
+    services.AddTransient<IImageStorageProvider, LocalImageStorageProvider>();
+    // inject chat data provider
+    services.AddTransient<IChatDataProvider<BaiduWenxinMessage>, ChatDataProvider<BaiduWenxinMessage>>();
+    
+    // inject baidu api service
+    services.AddWenxinworkshop(config);
+    services.AddErnieVilg(config);
+
+    //...
+}
+```
+
+2. Have fun! 
+
+```
+
+    /// <summary>
+    /// 集成百度AI类api
+    /// </summary>
+    [ApiVersion("1.0")]
+    [ApiController]
+    [Route("api/v{version:apiVersion}/baidu")]
+    [ApiExplorerSettings(GroupName = "百度大模型")]
+    public class BaiduApiController(
+        IAIChatApiService<ChatRequest, ChatApiResponse> baiduApiService,
+        IAIPaintApiService<PaintApplyRequest, PaintResultResponse> ernieVilgApiService) : ControllerBase
+    {
+        private readonly IAIChatApiService<ChatRequest, ChatApiResponse> _apiService = baiduApiService;
+        private readonly IAIPaintApiService<PaintApplyRequest, PaintResultResponse> _ernieVilgApiService = ernieVilgApiService;
+
+        /// <summary>
+        /// 发起文心一言大模型对话
+        /// </summary>
+        /// <param name="request">The request.</param>
+        /// <returns></returns>
+        [HttpPost("chat")]
+        [ProducesResponseType(typeof(string), 200)]
+        [ProducesResponseType(typeof(ChatApiResponse), 200)]
+        [AppExceptionInterceptor(ReturnCode = -100001, ApiVersion = "1.0")]
+        public async Task Chat(ChatRequest request)
+        {
+            await _apiService.Chat(request);
+        }
+
+        /// <summary>
+        /// 文生图
+        /// <para>封装文生图api以及回调获取生成图片api</para>
+        /// </summary>
+        /// <param name="request">The request.</param>
+        /// <returns></returns>
+        [HttpPost("text2img")]
+        [ProducesResponseType(typeof(PaintResultResponse), 200)]
+        public async Task<IActionResult> ApplyText2Img(PaintApplyRequest request)
+        {
+            var result = await _ernieVilgApiService.Text2Image(request);
+            Response.BuildAIGeneratedResponseFeature();
+            return Ok(result);
+        }
+    }
+
+```
+
+
+
 ## 支持的模型
 
 `LLMService` 支持的语言模型列表如下：

src/LLMServiceHub/Startup.cs

@@ -88,6 +88,8 @@ public void ConfigureServices(IServiceCollection services)
                         ));
             });
 
+
+            // Ensure HttpContext injected. It will be accessed in Chat service.
             services.AddHttpContextAccessor();