Java

Question

在这方面找不到任何帮助，但我一直在尝试使用 HtmlUnit 发送 post 请求。我的代码是：

final WebClient webClient = new WebClient();

// Instead of requesting the page directly we create a WebRequestSettings object
WebRequest requestSettings = new WebRequest(
  new URL("www.URLHERE.com"), HttpMethod.POST);

// Then we set the request parameters
requestSettings.setRequestParameters(new ArrayList());
requestSettings.getRequestParameters().add(new NameValuePair("name", "value"));
// Finally, we can get the page
HtmlPage page = webClient.getPage(requestSettings);

有没有更简单的方法可以执行 POST 请求？

Answer 1

有 n 个可能的库，您可以使用它们来调用其余 Web 服务。

1) Apache Http 客户端 2) 从 Square 改造 3) 来自 google

的截击

我用过Http Apache 客户端和Retrofit。两个都很棒。

这是 Apache HTTP 客户端发送 Post 请求的代码示例

String token = null;

    HttpClient httpClient = HttpClientBuilder.create().build();
    HttpPost postRequest = new HttpPost(LOGIN_URL);
    StringBuilder sb = new StringBuilder();
    sb.append("{\"userName\":\"").append(user).append("\",").append("\"password\":\"").append(password).append("\"}");
    String content = sb.toString();
    StringEntity input = new StringEntity(content);
    input.setContentType("application/json");
    postRequest.setHeader("Content-Type", "application/json");
    postRequest.setHeader("Accept", "application/json");

    postRequest.setEntity(input);

    HttpResponse response = httpClient.execute(postRequest);

    if (response.getStatusLine().getStatusCode() != 201)
    {
        throw new RuntimeException("Failed : HTTP error code : " + response.getStatusLine().getStatusCode());
    }

    Header[] headers = response.getHeaders("X-Auth-Token");

    if (headers != null && headers.length > 0)
    {
        token = headers[0].getValue();
    }

    return token;

Answer 2

这是怎么做的

public void post() throws Exception
{

    URL url = new URL("YOURURL");
    WebRequest requestSettings = new WebRequest(url, HttpMethod.POST);

    requestSettings.setAdditionalHeader("Accept", "*/*");
    requestSettings.setAdditionalHeader("Content-Type", "application/x-www-form-urlencoded; charset=UTF-8");
    requestSettings.setAdditionalHeader("Referer", "REFURLHERE");
    requestSettings.setAdditionalHeader("Accept-Language", "en-US,en;q=0.8");
    requestSettings.setAdditionalHeader("Accept-Encoding", "gzip,deflate,sdch");
    requestSettings.setAdditionalHeader("Accept-Charset", "ISO-8859-1,utf-8;q=0.7,*;q=0.3");
    requestSettings.setAdditionalHeader("X-Requested-With", "XMLHttpRequest");
    requestSettings.setAdditionalHeader("Cache-Control", "no-cache");
    requestSettings.setAdditionalHeader("Pragma", "no-cache");
    requestSettings.setAdditionalHeader("Origin", "https://YOURHOST");

    requestSettings.setRequestBody("REQUESTBODY");

    Page redirectPage = webClient.getPage(requestSettings);
}

您可以根据需要对其进行自定义。 Add/remove headers, add/remove 请求 body, 等等...

Java - 使用 HtmlUnit 发送 post 请求

Java - Sending a post request with HtmlUnit

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