Jaspersoft：如何使用代理服务器调用可视化 js（外部到内部）

Question

我们正在使用 Jaspersoft 生成和检索报告。此服务器在内部网络中运行（私有 IP 地址）。我们在 Web Api 中有一个代理服务器（外部服务器）来接收可视化 js 和所有其他请求。然后我们将这个请求转发给 Jaspersoft 服务器。我们的做法如下：

protected override async Task<HttpResponseMessage> SendAsync(
            HttpRequestMessage request, CancellationToken cancellationToken) {
    var uriBuilder = new UriBuilder(request.RequestUri);
    uriBuilder.Host = "internal address";

    request.RequestUri = uriBuilder.Uri;
    if (request.Method == HttpMethod.Get) {
        request.Content = null;
    }

    var response = await new HttpClient().SendAsync(request,
            HttpCompletionOption.ResponseHeadersRead, cancellationToken);
    return response;
}

此方法可以成功下载 visualize.js，但是当我们从 visualize.js 调用 visualize() 方法时，对于某些请求，jaspersoft 服务器返回 404-Not Found。

Answer 1

我不确定为什么会出现错误。但我希望问题是您正在为每个请求创建 HttpClient 对象。您应该创建一次该对象并使用该对象。试试这个

//Initiate HttpClient object here
private HttpClient _client = new HttpClient();

protected override async Task<HttpResponseMessage> SendAsync(
            HttpRequestMessage request, CancellationToken cancellationToken) {
    var uriBuilder = new UriBuilder(request.RequestUri);
    uriBuilder.Host = "internal address";

    request.RequestUri = uriBuilder.Uri;
    if (request.Method == HttpMethod.Get) {
        request.Content = null;
    }

    var response = await _client.SendAsync(request,
            HttpCompletionOption.ResponseHeadersRead, cancellationToken);
    return response;
}

Jaspersoft：如何使用代理服务器调用可视化 js（外部到内部）

Jaspersoft : how to call visualize js using proxy server (external to internal)

jasperserver

asp.net-web-api2