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我在 2 个程序中使用完全相同的代码,除了存储 POST 数据。在第一种方法(有效的方法)中,我使用 NameValuePair,在另一种方法中,我使用 StringEntity(不起作用,但我也不使用任何编码)。我不使用编码的原因是因为它完全弄乱了我的字符串。不过,带有 StringEntity 的代码将不起作用......这是代码:

public static String sendNamePostRequest(String urlString, String nameField) {

    HttpClient client = new DefaultHttpClient();

    HttpPost post = new HttpPost(urlString);

    StringBuffer sb = new StringBuffer();

    try {

        post.setEntity(new StringEntity(
                "__EVENTTARGET=&__EVENTARGUMENT=&__VIEWSTATE=%2FwEPDwULLTE3NDM5MzMwMzRkZA%3D%3D&__EVENTVALIDATION=%2FwEWBAL%2B%2B4CfBgK52%2BLYCQK1gpH7BAL0w%2FPHAQ%3D%3D&_nameTextBox=John&_zoekButton=Zoek&numberOfLettersField=3"));

        HttpResponse response = client.execute(post);
        HttpEntity entity = response.getEntity();

        BufferedReader br = new BufferedReader(new InputStreamReader(
                entity.getContent()));
        String in = "";

        while ((in = br.readLine()) != null) {
            sb.append(in + "\n");
        }

        br.close();

    } catch (Exception e) {
        e.printStackTrace();
    }

    return sb.toString();
}

此代码确实发送了请求(用wireshark 嗅探以检查),但不返回适当的HTML 数据。这可能是什么原因?

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1 回答 1

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而不是使用:

HttpResponse response = client.execute(post);
HttpEntity entity = response.getEntity();

BufferedReader br = new BufferedReader(new InputStreamReader(
                entity.getContent()));

删除HttpEntity entity = response.getEntity();并执行以下操作:

HttpResponse response = client.execute(post);
BufferedReader br = new BufferedReader(new InputStreamReader(
                response.getEntity().getContent(), "UTF-8"));

对于 NameValuePair,请查看此链接

于 2012-04-04T23:55:08.087 回答