PostMethod HttpPost HttpClient - 使用 url 参数发布 xml

Question

在 java 中有没有一种方法可以使用 PostMethod 或 HttpPost 以及 url 参数来发布 XML？我正在做类似下面的事情，但它不起作用。

URL - https://mytest.com?z=123&b=abc&c=%10

xml - <test>
        <data> This is test XML </data>
      </test>

public String getResponse(String xml) {

HttpClient client = new HttpClient();
// "https://mytest.com?z=123&b=abc&c=%10"
String url="https://mytest.com";
PostMethod pMethod = new pMethod(url);
pMethod.addParameter("z","123");
pMethod.addParameter("b","abc");
pMethod.addParameter("c","%10");
post.setRequestEntity(new StringRequestEntity(xml, "application/xml", "UTF-8"));
client.executeMethod(pMethod);
}

Answer 1

我建议您使用 REST 客户端来执行 HTTP POST。此外，您应该在 POST 的正文中传递您的 XML，而不是作为 URL 参数（URL 编码问题）。

可以找到一个简单的 POST JSON 示例here

Answer 2

我想我第一次误解了你的问题。您想将 XML 作为 URL 参数传递，但通过 POST 而不是直接在 URL 中包含 XML？你可以这样做：

import java.net.URL;
import java.net.HttpURLConnection;
import java.net.URLEncoder;
import java.io.BufferedWriter;
import java.io.OutputStreamWriter;

public class XMLPoster {
    public static void main(String[] argv) {
        try {
            String XMLData = argv[0];
            URL url = new URL("http://posttestserver.com/post.php");
            String myParam = "myparam=" + URLEncoder.encode(XMLData, "UTF-8");
            HttpURLConnection httpConn = (HttpURLConnection)url.openConnection();
            httpConn.setRequestMethod("POST");
            httpConn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
            httpConn.setRequestProperty("Content-Length", Integer.toString(myParam.length()));
            httpConn.setDoOutput(true);

            BufferedWriter writer = new BufferedWriter(new OutputStreamWriter((httpConn.getOutputStream())));
            writer.write(myParam, 0, myParam.length());
            writer.flush();
            writer.close();

            System.out.println(httpConn.getResponseCode());
        } catch (Exception e) {
            e.printStackTrace();
        }

    }
}

如果你运行这个：

$ java -cp . XMLPoster '<ThisXMLisFake>But how do you know?</ThisXMLisFake>'
200

并在 posttestserver.com 上找到相应的文件，它应该包含这个，希望这是你想要的：

Post Params:
key: 'myparam' value: '<ThisXMLisFake>But how do you know?</ThisXMLisFake>'
Empty post body.

Upload contains PUT data:
myparam=%3CThisXMLisFake%3EBut+how+do+you+know%3F%3C%2FThisXMLisFake%3E

Answer 3

你可以使用内置的 Java 东西来做到这一点：

import java.net.URL;
import java.net.HttpURLConnection;
import java.io.BufferedWriter;
import java.io.OutputStreamWriter;

public class XMLPoster {
    public static void main(String[] argv) {
        try {
            String XMLData = argv[0];
            URL url = new URL("http://posttestserver.com/post.php");
            HttpURLConnection httpConn = (HttpURLConnection)url.openConnection();
            httpConn.setRequestMethod("POST");
            httpConn.setRequestProperty("Content-Type", "application/xml; charset=utf-8");
            httpConn.setRequestProperty("Content-Length", Integer.toString(XMLData.length()));
            httpConn.setDoOutput(true);

            BufferedWriter writer = new BufferedWriter(new OutputStreamWriter((httpConn.getOutputStream())));
            writer.write(XMLData, 0, XMLData.length());
            writer.flush();
            writer.close();

            System.out.println(httpConn.getResponseCode());
        } catch (Exception e) {
            e.printStackTrace();
        }

    }
}

这个代码当然只是一个例子，并没有做错误检查等。