如何使用java发送表单？ [英] How to send post form with java?

问题描述

我想在网站上发送一个包含java的帖子。我想出了这个，但我不知道下一步该怎么做，或者如果这是正确的方式。

I would like to send a post form with java on a website. I came up with this, but I dont what to do next or if this is even the right way.

URL url = new URL("http://127.0.0.1");
URLConnection conn=url.openConnection();
conn.setDoOutput(true);
OutputStreamWriter wr = new OutputStreamWriter(conn.getOutputStream());
wr.write(data);

发布表单看起来像这样。

the post form looks like this.

<form action="prikaz4.php" method="post">
    <select name="igralec"/>
    <option value="Kobe Bryant">Kobe Bryant</option>
    <option value="Dwayne Wade">Dwayne Wade</option>
    <input type="submit" />
</form>

推荐答案

您可以编写类似下面的代码：

You can write code similar to this :

 import org.apache.commons.httpclient.HttpClient;
 import org.apache.commons.httpclient.HttpException;
 import org.apache.commons.httpclient.HttpStatus;
 import org.apache.commons.httpclient.methods.PostMethod;
 import org.apache.http.impl.client.HttpClients;

public class PostReqEx {

  public void sendReq(String url,String email,String fname){
    HttpClient httpClient = HttpClients.createDefault();
    PostMethod postMethod = new PostMethod(url);
    postMethod.addParameter("Email", email);
    postMethod.addParameter("fname", fname);
    try {
        httpClient.executeMethod(postMethod);
    } catch (HttpException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }

    if (postMethod.getStatusCode() == HttpStatus.SC_OK) {
        String resp = postMethod.getResponseBodyAsString();
    } else {
         //...postMethod.getStatusLine();
    }
  }
}

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