Cors 正在阻止客户端访问本地 vertx-server

Question

我运行遇到了麻烦，CORS 在通过 jquery 获取 JSON 对象时阻止我的客户端访问 vertx 服务器。我发现作为解决方案，但我似乎在我的实施中做错了什么。

我正在测试的是 get-invokation，但我认为同样的问题适用于所有 api。

@Override
public void start() {

    Router router = Router.router(vertx);

    router.route().handler(CorsHandler.create(".*.")
            .allowedMethod(io.vertx.core.http.HttpMethod.GET)
            .allowedMethod(io.vertx.core.http.HttpMethod.POST)
            .allowedMethod(io.vertx.core.http.HttpMethod.OPTIONS)
            .allowedHeader("Access-Control-Request-Method")
            .allowedHeader("Access-Control-Allow-Credentials")
            .allowedHeader("Access-Control-Allow-Origin")
            .allowedHeader("Access-Control-Allow-Headers")
            .allowedHeader("Content-Type"));

    router.route("/api/diagrams*").handler(BodyHandler.create());
    router.post("/api/diagrams").handler(this::insert);
    router.delete("/api/diagrams/delete/:id").handler(this::delete);
    router.get("/api/diagrams/get/:id").handler(this::get);
    router.get("/api/diagrams/get/user/:username").handler(this::getByUser);

    vertx.createHttpServer()
            .requestHandler(router::accept)
            .listen(7070);
}

private void get(RoutingContext rc) {
    final String id = rc.request().getParam("id");
    if (id == null) {
        rc.response().setStatusCode(400).end();
    } else {
        UserDiagram diagram = userDiagramDao.get(id);
        if (diagram == null) {
            rc.response().setStatusCode(404).end();
        } else {
            rc.response()
                    .putHeader("content-type", "application/json; charset=utf-8")
                    // Are these necessary?
                    .putHeader("Access-Control-Allow-Origin", "*")
                    .putHeader("Access-Control-Allow-Methods", "POST, GET")
                    .putHeader("Custom-Header", "Own-Data")
                    .putHeader("Access-Control-Expose-Headers", "Custom-Header")
                    //
                    .end(Json.encodePrettily(diagram));
        }
    }
}

从 f12 看到的 Cors 错误：

jquery.min.js:4 Access to XMLHttpRequest at 'localhost:7070/api/diagrams/get/5db07cfd5e189c7a093bf920' from origin 'http://localhost:8080' has been blocked by CORS policy: Cross origin requests are only supported for protocol schemes: http, data, chrome, chrome-extension, https. send @ jquery.min.js:4 ajax @ jquery.min.js:4 (anonymous) @ chart.xhtml:21 chart.xhtml:12 Cross-Origin Read Blocking (CORB) blocked cross-origin response http://registry.npmjs.org/node-fetch with MIME type application/json. See https://www.chromestatus.com/feature/5629709824032768 for more details. jquery.min.js:4 [Violation] 'error' handler took 1376ms

查询从客户端测试如下：

    var result_data;
    $.ajax({
        url: "localhost:7070/api/diagrams/get/5db07cfd5e189c7a093bf920",
        type: "GET",
        //contentType: "application/json",
        //  dataType: 'json',
        data: diagram_data,
        success: function(res) {
            result_data = res;
            alert("Success!!");
        },
        error: function(xhr, textStatus, errorThrown) {
            alert("Query failed");
        }
    });

我也不清楚问题出在客户端还是服务器端。

Answer 1

尝试将 http:// 放入请求 url 中。

如错误所述，请求仅支持 http、https 等协议...

Cors 正在阻止客户端访问本地 vertx-server

Cors is blocking client access to local vertx-server

javascript

java

jquery

cors

vert.x