Question

有没有骆驼的宁静的Web服务示例来提供文件下载，如下api

@GET
@Path("/jar")
@Produces(MediaType.APPLICATION_OCTET_STREAM)
public Response downloadFile() {
    File file = new File("/home/user/Downloads/classes.jar");
    ResponseBuilder response = Response.ok((Object) file);
    response.header("Content-Disposition", "attachment;filename=classes.jar");
    return response.build();
}

Answer 1

您可以结合使用Camel REST DSL和Content Enricher（特别是pub trait Event { fn event(&self); } pub struct Property { message: String, } impl Property { pub fn new(message: String) -> Property { Property { message } } } impl Event for Property { fn event(&self) { println!("{}", &self.message); } } pub struct Utility { message: String, } impl Utility { pub fn new(message: String) -> Utility { Utility { message } } } impl Event for Utility { fn event(&self) { println!("{}", &self.message); } } pub struct Game { pub spaces: Vec<Box<Event>>, } fn main () { let game = Game{ spaces: vec![ Box::new(Utility::new(String::from("Water works"))), Box::new(Property::new(String::from("Fleet Street"))), Box::new(Utility::new(String::from("Electric company"))), Box::new(Property::new(String::from("Bond Street"))), ] }; for space in game.spaces { space.event(); } } // Water works // Fleet Street // Electric company // Bond Street）。

您的案例的示例实现如下所示：

pollEnrich

请注意，如果在指定的路径中找不到文件，则// you can configure it as you want, it's just an example restConfiguration().component("restlet").host("localhost").port(8081); rest("/jar") .get() .produces(MediaType.APPLICATION_OCTET_STREAM_VALUE) .route() .routeId("downloadFile") .pollEnrich("file:/home/user/Downloads?fileName=classes.jar&noop=true") .setHeader("Content-Disposition", simple("attachment;filename=classes.jar"));将一直阻塞，直到文件到达为止。您可以通过为调用pollEnrich提供第二个类型为long的参数来设置超时（以毫秒为单位）。

骆驼其余API用于文件下载

1 个答案: