要在Apache Camel中使用Swagger UI而不使用Spring Boot，可以按照以下步骤进行操作：

步骤1：添加Swagger依赖

首先，您需要添加所需的Swagger依赖项。在您的pom.xml文件中，添加以下依赖项：

    org.apache.camel
    camel-swagger-java
    ${camel.version}



    org.apache.camel
    camel-swagger-java
    ${camel.version}

步骤2：配置Swagger

接下来，您需要配置Swagger。创建一个Java类来配置Swagger，例如SwaggerConfig.java。

import org.apache.camel.component.swagger.DefaultCamelSwaggerServlet;
import org.apache.camel.component.swagger.ServletCamelSwaggerServlet;
import org.apache.camel.component.swagger.SwaggerComponent;
import org.apache.camel.component.swagger.SwaggerComponentServlet;
import org.apache.camel.component.swagger.SwaggerEndpointServlet;
import org.apache.camel.component.swagger.SwaggerRestApiContext;
import org.apache.camel.component.swagger.RestSwaggerReader;
import org.apache.camel.component.swagger.SwaggerReader;
import org.apache.camel.component.swagger.RestSwaggerReader;

import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

public class SwaggerConfig extends HttpServlet {

    private static final long serialVersionUID = 1L;

    private DefaultCamelSwaggerServlet servlet;

    @Override
    public void init(ServletConfig config) throws ServletException {
        super.init(config);
        servlet = new DefaultCamelSwaggerServlet();
        servlet.setSwaggerReader(new RestSwaggerReader());
        servlet.setCamelContextId("camelContext");
        servlet.init(config);
    }

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        servlet.doGet(req, resp);
    }
}

步骤3：配置Camel组件

在您的Camel路由中，添加以下配置来启用Swagger：

import org.apache.camel.builder.RouteBuilder;
import org.apache.camel.component.servlet.CamelHttpTransportServlet;
import org.apache.camel.component.swagger.DefaultCamelSwaggerServlet;
import org.apache.camel.component.swagger.SwaggerComponent;
import org.apache.camel.component.swagger.SwaggerRestApiContext;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.context.embedded.ServletRegistrationBean;
import org.springframework.context.annotation.Bean;

@SpringBootApplication
public class CamelApplication {

    @Bean
    public ServletRegistrationBean servletRegistrationBean() {
        ServletRegistrationBean registration = new ServletRegistrationBean(new CamelHttpTransportServlet(), "/camel/*");
        registration.setName("CamelServlet");
        return registration;
    }

    @Bean
    public ServletRegistrationBean camelSwaggerServletRegistrationBean() {
        ServletRegistrationBean registration = new ServletRegistrationBean(new SwaggerConfig(), "/camel/api-docs");
        registration.setName("SwaggerServlet");
        return registration;
    }

    @Bean
    public SwaggerComponent swaggerComponent() {
        SwaggerComponent component = new SwaggerComponent();
        component.setBasePath("/camel");
        return component;
    }

    @Bean(name = "camelContext")
    public SwaggerRestApiContext camelContext() {
        SwaggerRestApiContext camelContext = new SwaggerRestApiContext();
        camelContext.setApiContextIdPattern("api-docs");
        camelContext.setBasePath("/camel");
        return camelContext;
    }

    public static void main(String[] args) {
        SpringApplication.run(CamelApplication.class, args);
    }
}

步骤4：启动Camel应用程序

现在，您可以启动您的Camel应用程序，并访问Swagger UI。Swagger UI将在http://localhost:8080/camel/api-docs上可用。

这样，您就可以在不使用Spring Boot的情况下在Apache Camel中使用Swagger UI了。