Java从Servlet调用带有POST中参数的第三方URL

Question

From my java web application, I want to call a third party site url. 从我的Java Web应用程序中，我想调用第三方站点的URL。 Third party url needs some input parameters that they accept only via post.And these inputs are not from the customer who is using my site. 第三方url需要一些只能通过post接受的输入参数。这些输入不是来自使用我网站的客户。 And finally third party page will be displayed in an iframe of my site. 最后，第三方页面将显示在我网站的iframe中。 I am able to do this with a jsp file which will have those inputs are hidden and have onload form submit as below: 我可以使用一个jsp文件来做到这一点，该文件将隐藏这些输入，并按如下所示提交onload表单：

<body onload="document.form1.submit()">
    <%  
        response.setHeader("Cache-Control","no-cache"); //HTTP 1.1
        response.setHeader("Pragma","no-cache"); //HTTP 1.0
        response.setDateHeader ("Expires", 0);
    %>  
<FORM METHOD="post" ACTION="<%= (String)request.getAttribute("thridpartyurl") %>" id=form1 name=form1>
<table width="100%" border="0" align="center" cellpadding="0" cellspacing="0" class="rightbox"> 
    <tr>
        <td>
        <input type="hidden" name="param1" value="<%= (String)request.getAttribute("param1") %>">
                <input type="hidden" name="param2" value="<%= (String)request.getAttribute("param2") %>">

        </td>
    </tr>
</table>    
</form>
</body>

But I want to avoid this jsp submission. 但我想避免这种jsp提交。 I am looking for a way to do this without the involvement of JSP. 我正在寻找一种无需JSP参与的方法。 Is there any way to do this in java. 有什么办法可以在Java中做到这一点。 From my little search, I understand as response.sendRedirect cannot do a post submission. 通过我的小搜索，我理解为response.sendRedirect无法提交帖子。 And dispatcher.forward(request, response) cannot use for outside project urls. 并且dispatcher.forward(request, response)不能用于外部项目url。

Please help. 请帮忙。

Regards, 问候，

Answer 1

Below is java code to call any http url. 下面是调用任何http网址的Java代码。

    String url = "thirdparty site url";

    URL obj = new URL(url);

    HttpsURLConnection con = (HttpsURLConnection) obj.openConnection();

    //add reuqest header
    con.setRequestMethod("POST");


    String urlParameters = "param1=value1&param2=value2";

    // Send post request
    con.setDoOutput(true);
    DataOutputStream wr = new DataOutputStream(con.getOutputStream());
    wr.writeBytes(urlParameters);
    wr.flush();
    wr.close();

    int responseCode = con.getResponseCode();
    System.out.println("\nSending 'POST' request to URL : " + url);
    System.out.println("Post parameters : " + urlParameters);
    System.out.println("Response Code : " + responseCode);

    BufferedReader in = new BufferedReader(
            new InputStreamReader(con.getInputStream()));
    String inputLine;
    StringBuffer response = new StringBuffer();

    while ((inputLine = in.readLine()) != null) {
        response.append(inputLine);
    }
    in.close();

    //print result
    System.out.println(response.toString());

Java从Servlet调用带有POST中参数的第三方URL

问题描述

1 个解决方案

解决方案1
-1 2015-06-04 07:36:21

Java从Servlet调用带有POST中参数的第三方URL

问题描述

1 个解决方案

解决方案1 -1 2015-06-04 07:36:21

解决方案1
-1 2015-06-04 07:36:21