Question

我正试图从一个名为zillow的网站上为我提供API，但我对网络内容很新。他们尝试解释here如何使用它，但它让我失去了所以我看了他们的论坛。有人在那里发布了一个“示例”，但我无法看到他们的代码甚至调用API的位置。基本上我需要一个表格字段，它将是一个地址并发送该信息以获取数据，这里是从这些人的例子中获取的源代码，

<html xml:lang="en" lang="en">
<head>
  <title></title>
</head>
<body>
<h3><font face="Verdana, Arial, Helvetica, sans-serif">Get Property < # >Zestimates 
  from Zillow</a></font></h3>
<form method="post" action="/Real-Estate/Zestimate.php" name="zip_search">
  <table align="center" width="618">
    <tr> 
      <td colspan="2"><font face="verdana, arial, sans-serif">Please specify the 
        Property address. </font></td>

      <td width="205" align="left"> <div align="left"><font face="Verdana, Arial, Helvetica, sans-serif"><#></a></font></div></td>
    </tr>
    <tr> 
      <td colspan="2"><font face="Verdana, Arial, Helvetica, sans-serif">Street</font>: 
        <input id="street2" type="text" maxlength="50" size="50" value="" name="street"/></td>
      <td>&nbsp;</td>
    </tr>
    <tr> 
      <td colspan="2"><font face="verdana, arial, sans-serif">City, State or ZipCode:</font> 
        <input id="citystatezip3" type="text" maxlength="50" size="20" value="" name="citystatezip"/></td>

      <td>&nbsp; </td>
    </tr>

  </table>
  <div align="center">
    <input name="submit" type="submit" value="Get Zestimate">
  </div>
</form>

你可以看到它只是一个简单的表格，自己发布了吗？但是当我点击它时，它会从API中提取数据并显示它，但我不知道如何。我很乐意为您提供任何帮助，谢谢！

Answer 1

基于http://www.zillow.com/howto/api/APIFAQ.htm#devkit，没有JavaScript API。由于这个（以及跨域限制），您必须使用服务器端语言。我将添加一个简单的Java示例。

编辑：好的，这里有。它只需要街道地址和城市/州，并返回格式化的值。错误检查遗漏：

import java.text.NumberFormat;

import org.w3c.dom.*;
import org.xml.sax.*;

import javax.xml.parsers.*;

import javax.xml.transform.*;
import javax.xml.transform.dom.*;
import javax.xml.transform.stream.*;

import java.io.*;

import java.util.Currency;

public class Zillow
{
    private static final DocumentBuilderFactory dbFac;
    private static final DocumentBuilder docBuilder;
    static
    {
        try
        {
            dbFac = DocumentBuilderFactory.newInstance();
            docBuilder = dbFac.newDocumentBuilder();
        }
        catch(ParserConfigurationException e)
        {
            throw new RuntimeException(e);
        }
    }
    private static final String DEEP_URL = "http://www.zillow.com/webservice/GetDeepSearchResults.htm";
    private static final String ZESTIMATE_URL = "http://www.zillow.com/webservice/GetZestimate.htm";

    private static final String ZWSID = ...;

    private static final NumberFormat nf = NumberFormat.getCurrencyInstance();

    // Returns Zestimate value for address.
    public static String getValuation(String address, String cityStateZip) throws SAXException, IOException
    {
        Document deepDoc = docBuilder.parse(DEEP_URL + 
                                        "?zws-id=" + ZWSID + 
                                        "&address=" + address + 
                                        "&citystatezip=" + cityStateZip);
        Element firstResult = (Element)deepDoc.getElementsByTagName("result").item(0);
        String zpid = firstResult.getElementsByTagName("zpid").item(0).getTextContent();
        Document valueDoc = docBuilder.parse(ZESTIMATE_URL + 
                                             "?zws-id=" + ZWSID + 
                                             "&zpid=" + zpid);
        Element zestimate = (Element)valueDoc.getElementsByTagName("zestimate").item(0);
        Element amount = (Element)zestimate.getElementsByTagName("amount").item(0);
        String currency = amount.getAttribute("currency");
        nf.setCurrency(Currency.getInstance(currency));
        return nf.format(Double.parseDouble(amount.getTextContent()));
    }

    public static void main(String[] args) throws Throwable
    {
        String address = args[0];
        String cityStateZip = args[1];
        System.out.println(getValuation(address, cityStateZip));
    }
}

Answer 2

Nahhh ......这种方式更容易:-)

构建两个函数并将它们用于zillow。回复的反应很简单。

string zWsid = "yourZwsid";
// sample API Call
//  http://www.zillow.com/webservice/GetSearchResults.htm?zws-id=<ZWSID>&address=2114+Bigelow+Ave&citystatezip=Seattle%2C+WA

string response = string.Empty;
int iZpid = 0;
int iLotSizeSqFoot = 0;
int iHomeValue = 0;
float estimate = 0;

try {
    response = web_url("http://www.zillow.com/webservice/GetSearchResults.htm?zws-id=" + zWsid + "&address=" + addressTB.Text + "&citystatezip=" + CityStateZipTB.Text);
} catch (Exception ex) {
    MessageBox.Show("Exception occured! " + ex.ToString());
}


// MessageBox.Show(response);
try {
    iZpid = Int32.Parse(parseTag(response, "zpid"));
}


/// you can make a lot of the calls and catch a lot of the values back just like this :-) 

///// Functions///// 

private string parseTag(string response, string tag) {

    XmlDocument doc = new XmlDocument();
    doc.LoadXml(response);
    XmlNodeList elemList = doc.GetElementsByTagName(tag);
    string parsedTag = elemList[0].InnerXml;
    return parsedTag;

}

private string web_url(string url) {

    // Create a request for the URL. 
    WebRequest request = WebRequest.Create(url);

    // If required by the server, set the credentials.
    request.Credentials = CredentialCache.DefaultCredentials;

    // Get the response.
    WebResponse response = request.GetResponse();

    // Display the status.
    // MessageBox.Show(((HttpWebResponse)response).StatusDescription);
    // Get the stream containing content returned by the server.
    Stream dataStream = response.GetResponseStream();

    // Open the stream using a StreamReader for easy access.
    StreamReader reader = new StreamReader(dataStream);

    // Read the content.
    string responseFromServer = reader.ReadToEnd();

    // Display the content.
    // MessageBox.Show(responseFromServer);
    // Clean up the streams and the response.
    reader.Close();
    response.Close();

    return responseFromServer;
}

如何使用zillow.com API将数据发送到API调用并将其取回

2 个答案: