如何在apache camel中将文件内容作为响应发送回？

from("file:/path/to/directory")
    .process(new Processor() {
        public void process(Exchange exchange) throws Exception {
            // 读取文件内容
            File file = exchange.getIn().getBody(File.class);
            String content = FileUtils.readFileToString(file, "UTF-8");
            
            // 将文件内容设置为响应
            exchange.getOut().setBody(content);
        }
    });

from("direct:start")
    .enrich("file:/path/to/directory", new AggregationStrategy() {
        public Exchange aggregate(Exchange original, Exchange resource) {
            // 获取文件内容
            String content = resource.getIn().getBody(String.class);
            
            // 将文件内容设置为响应
            original.getOut().setBody(content);
            
            return original;
        }
    })
    .to("direct:response");