小编典典

带有有效负载或表格数据的DELETE请求导致Bad Request

java

我正在使用Java Jersey 2.17构建RESTful Web服务。客户。我正在使用ExtJS 5开发。

我在服务上的课程

Main.java

 public class Main
 {
    public static final String BASE_URI = "http://localhost:8080/app/rest/";
    public static HttpServer startServer() {
        final ResourceConfig rc = new ResourceConfig();

        rc.packages(true, "app");
        rc.register(ResponseCorsFilter.class);

        return GrizzlyHttpServerFactory.createHttpServer(URI.create(Main.BASE_URI), rc);
    }

    public static void main(final String[] args) throws IOException {
        final HttpServer server = Main.startServer();
        System.out.println(String.format("Jersey app started with WADL available at " + "%sapplication.wadl\nHit enter to stop it...",
                Main.BASE_URI));
        System.in.read();
        server.stop();
    }
}

UserRi.java

@Path("/user")
public class UsersRi {
    @DELETE
    @Path("/{id}")
    @Produces(MediaType.APPLICATION_JSON)
    public String deleteUser(@PathParam("id") final String id) {
        final String res = "{\"success\":true,\"msg\":\"User " + id + " successfully deleted.\"}";
        return res;
    }
}

ResponseCorsFilter.java

public class ResponseCorsFilter implements ContainerResponseFilter {

    @Override
    public void filter(final ContainerRequestContext req, final ContainerResponseContext contResp) {

        contResp.getHeaders().add("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept");
        contResp.getHeaders().add("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE, OPTIONS");
        contResp.getHeaders().add("Access-Control-Allow-Origin", "*");

        final String reqHead = req.getHeaderString("Access-Control-Request-Headers");
        if ((null != reqHead) && StringUtils.isNotBlank(reqHead)) {
            contResp.getHeaders().add("Access-Control-Request-Headers", reqHead);
        }

    }

}

目前,我一直坚持删除内容。在客户端上,我从表单面板中获取记录并调用擦除功能。请求/响应看起来像这样:

General:
    Remote Address:127.0.0.1:8080
    Request URL:http://localhost:8080/app/rest/user/user4
    Request Method:DELETE
    Status Code:400 Bad Request

Response Headers
    Connection:close
    Content-Length:0
    Date:Tue, 14 Apr 2015 19:26:05 GMT

Request Headers
    Accept:*/*
    Accept-Encoding:gzip, deflate, sdch
    Accept-Language:de-DE,de;q=0.8,en-US;q=0.6,en;q=0.4
    Connection:keep-alive
    Content-Length:14
    Content-Type:application/json
    Host:localhost:8080
    Origin:http://localhost
    Referer:http://localhost/app/
    User-Agent:Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.118 Safari/537.36
    X-Requested-With:XMLHttpRequest

Request Payload
    {"id":"user4"}

在控制台上,我看到了 XMLHttpRequest cannot load http://localhost:8080/app/rest/user/user4. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost' is therefore not allowed access. The response had HTTP status code 400.

也可以通过以下jQuery.ajax()调用来重现它:
$.ajax({method:'DELETE',url:"http://localhost:8080/app/rest/user/user4",data:{"id":"user4"}})

发送不带表单数据或有效负载的请求正在运行。

还有另一种方法可以解决此问题而不覆盖ExtJS框架中的内容吗?

问候


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2020-11-26

共1个答案

小编典典

DELETE,以及GET请求不应具有有效负载(实体)。我不知道是否在任何地方指定此名称,但是您可以在此处查看讨论。

这就是原因400 Bad Request(对于GET也会发生)。摆脱它,它将起作用。但是无论如何,甚至不需要发送该正文,就像您一样,只有信息是id,该信息已经包含在URL路径中。

如果仅是示例,并且您需要与请求一起发送其他一些任意信息,则使用查询参数,例如

 /app/rest/user/user4?some=value1&other=value2&data=value3

 public String deleteUser(@PathParam("id") final String id,
                          @QueryParam("some") String some,
                          @QueryParam("other") String other,
                          @QueryParam("data") String data) {}

使用jQuery,您可以做到

var params = {
    some:"valeu1",
    other:"value2",
    data:"value3"
}

var encoded = $.param(params);
var url = baseUrl + "?" + encoded;
$.ajax({
    url: url,
    ...
})

更新

因此,经过一些调查,这似乎是一个灰熊问题。我已经对Jetty进行了测试,并且效果很好。

看到类似的问题

  • 在这里 -最后的评论说它是固定的,但是我无法提供一个可行的例子
  • 这里

更新2

因此,如@alexey在下面的评论中所述

没错,默认情况下,Grizzly不允许HTTP方法的有效负载,而HTTP规范对此并未明确说明。像HTTP
GET,DELETE和HEAD。但是您可以通过调用以下方式打开支持:httpServer.getServerConfiguration().setAllowPayloadForUndefinedHttpMethods(true)‌​;请不要在开始之前调用该方法HttpServer

所以解决办法是做类似

public static HttpServer createServer() {
    final ResourceConfig rc = new ResourceConfig();
    rc.packages(true, "app");
    rc.register(ResponseCorsFilter.class);

    HttpServer server = GrizzlyHttpServerFactory.createHttpServer(
                               URI.create(BASE_URI), rc, false);
    server.getServerConfiguration().setAllowPayloadForUndefinedHttpMethods(true);
    return server;
}

public static void main(String[] args) throws IOException {
    final HttpServer server = createServer();
    server.start();
    System.out.println(String.format("Jersey app started with WADL available at "
            + "%sapplication.wadl\nHit enter to stop it...", BASE_URI));
    System.in.read();
    server.stop();
}

经过测试,可以正常工作。

2020-11-26