feat(oss): 实现文件上传功能并集成Feign调用

- 新增文件上传接口，支持multipart/form-data格式
- 配置Spring Servlet multipart参数，设置文件大小限制
- 添加Feign客户端配置，支持表单提交
- 实现Feign请求拦截器，传递用户上下文信息
- 创建OSS服务API接口，用于文件上传
- 在用户服务中集成OSS RPC调用，实现头像和背景图上传
- 添加上传失败的业务异常处理
- 更新pom.xml依赖，引入OpenFeign、负载均衡及Feign表单相关组件
- 定义API常量和服务名称
- 启用Feign客户端扫描，支持跨服务调用

hanserwei-framework/hanserwei-spring-boot-starter-biz-context/src/main/java/com/hanserwei/framework/biz/context/config/FeignContextAutoConfiguration.java

@@ -0,0 +1,14 @@
+package com.hanserwei.framework.biz.context.config;
+
+import com.hanserwei.framework.biz.context.interceptor.FeignRequestInterceptor;
+import org.springframework.boot.autoconfigure.AutoConfiguration;
+import org.springframework.context.annotation.Bean;
+
+@AutoConfiguration
+public class FeignContextAutoConfiguration {
+
+    @Bean
+    public FeignRequestInterceptor feignRequestInterceptor() {
+        return new FeignRequestInterceptor();
+    }
+}

hanserwei-framework/hanserwei-spring-boot-starter-biz-context/src/main/java/com/hanserwei/framework/biz/context/interceptor/FeignRequestInterceptor.java

@@ -0,0 +1,25 @@
+package com.hanserwei.framework.biz.context.interceptor;
+
+import com.hanserwei.framework.biz.context.holder.LoginUserContextHolder;
+import com.hanserwei.framework.common.constant.GlobalConstants;
+import feign.RequestInterceptor;
+import feign.RequestTemplate;
+import lombok.extern.slf4j.Slf4j;
+
+import java.util.Objects;
+
+@Slf4j
+public class FeignRequestInterceptor implements RequestInterceptor {
+
+    @Override
+    public void apply(RequestTemplate requestTemplate) {
+        // 获取当前上下文中的用户 ID
+        Long userId = LoginUserContextHolder.getUserId();
+
+        // 若不为空，则添加到请求头中
+        if (Objects.nonNull(userId)) {
+            requestTemplate.header(GlobalConstants.USER_ID, String.valueOf(userId));
+            log.info("########## feign 请求设置请求头 userId: {}", userId);
+        }
+    }
+}

hanserwei-framework/hanserwei-spring-boot-starter-biz-context/src/main/resources/META-INF/spring/org.springframework.boot.autoconfigure.AutoConfiguration.imports

@@ -1 +1,2 @@
-com.hanserwei.framework.biz.context.config.ContextAutoConfiguration
+com.hanserwei.framework.biz.context.config.ContextAutoConfiguration
+com.hanserwei.framework.biz.context.config.FeignContextAutoConfiguration