XML错误，org.xmlpull.v1.XmlPullParserException

Question

我试着用Android做一个应用程序聊天机器人。我使用Pandorabots作为聊天机器人服务器。要在Android设备与服务器之间连接。我使用pandorabot，我使用来自android-xmlrpc的xml库。所以这是我的代码：

public class MainActivity extends Activity {
private EditText editOne;
private TextView textOne;
private Button ButtonOne;
private XMLRPCClient server;
private URI uri;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    if (android.os.Build.VERSION.SDK_INT > 9) {
        StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
        StrictMode.setThreadPolicy(policy);
    }

    uri = URI.create("http://www.pandorabots.com/pandora/talk-xml?botid=e80e92407e341007");
    server = new XMLRPCClient(uri);
    editOne = (EditText) findViewById(R.id.editText1);
    textOne = (TextView) findViewById(R.id.textView1);
    ButtonOne = (Button) findViewById(R.id.button1);

    textSatu.setText(getDataMethod("hi"));
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
}


private String getDataMethod(String num) {
    String text = "";
    try {
        Log.w("Running server.call", "prosess");
        Object[] data = (Object[]) server.call("input", num);
        Log.w("server.call Run", "finish");
        Log.w("Run HashMap", "prosess");
        for(Object o: data) {
            HashMap map = (HashMap) o;
            Log.w("HashMap Berjalan", "Error");
            text = text + "'that' => " + map.get("that") + "\n\n";
        }
    } catch (XMLRPCException e) {
        Log.w("XMLRPC Test", "Error", e);
        text = "XMLRPC error";
    }       
    return text;
}


 }

但我错了。例如:org.xmlpull.v1.XmlPullParserException: expected: START_TAG {null}methodResponse (java.io.InputStreamReader@41174280中的position:START_TAG @1:45 )

有谁可以帮我？请。

Answer 1

这里有一个不需要XMLRPCClient的解决方案。重要的是在与bot的第一次交互中捕获客户ID，然后将custid的值与每个后续事务一起发回。bot使用custid来记住与会话线程相关的局部变量，如名称、年龄、性别、主题等。

import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.URI;
import java.net.URLEncoder;
public class PandorabotsTalkAPI {
    public String defaultCustid = "0";
    public String custid = defaultCustid;
    public String responseFailed = "RESPONSE FAILED";
    public String defaultBotId = "f5d922d97e345aa1";
    public String defaultHost = "www.pandorabots.com";
    public String askPandorabots(String input) {
        return askPandorabots(input, defaultHost, defaultBotId);
    }
    public String askPandorabots(String input, String host, String botid) {
        //System.out.println("Entering askPandorabots with input="+input+" host ="+host+" botid="+botid);
        String responseContent = pandorabotsRequest(input, host, botid);
        if (responseContent == null) return responseFailed;
        else return pandorabotsResponse(responseContent, host, botid);
    }
    public String responseContent(String url) throws Exception {
        HttpClient client = new DefaultHttpClient();
        HttpGet request = new HttpGet();
        request.setURI(new URI(url));
        InputStream is = client.execute(request).getEntity().getContent();
        BufferedReader inb = new BufferedReader(new InputStreamReader(is));
        StringBuilder sb = new StringBuilder("");
        String line;
        String NL = System.getProperty("line.separator");
        while ((line = inb.readLine()) != null) {
            sb.append(line).append(NL);
        }
        inb.close();
        return sb.toString();
    }


    public String spec(String host, String botid, String custid, String input) {
        //System.out.println("--> custid = "+custid);
        String spec = "";
        try {
            if (custid.equals("0"))      // get custid on first transaction with Pandorabots
                spec =    String.format("%s?botid=%s&input=%s",
                        "http://" + host + "/pandora/talk-xml",
                        botid,
                        URLEncoder.encode(input, "UTF-8"));
            else spec =                 // re-use custid on each subsequent interaction
                    String.format("%s?botid=%s&custid=%s&input=%s",
                            "http://" + host + "/pandora/talk-xml",
                            botid,
                            custid,
                            URLEncoder.encode(input, "UTF-8"));
        } catch (Exception ex) {
            ex.printStackTrace();
        }
        //System.out.println(spec);
        return spec;
    }

    public String pandorabotsRequest(String input, String host, String botid) {
        try {

            String spec = spec(host, botid, custid, input);
            //System.out.println("Spec = "+spec);
            String responseContent = responseContent(spec);
            return responseContent;
        } catch (Exception ex) {
            ex.printStackTrace();
            return null;
        }
    }
    public String pandorabotsResponse (String xmlRpcResponse, String host, String botid) {
        String botResponse = responseFailed;
        try {
            int n1 = xmlRpcResponse.indexOf("<that>");
            int n2 = xmlRpcResponse.indexOf("</that>");

            if (n2 > n1)
                botResponse = xmlRpcResponse.substring(n1+"<that>".length(), n2);
            n1 = xmlRpcResponse.indexOf("custid=");
            if (n1 > 0) {
                custid = xmlRpcResponse.substring(n1+"custid=\"".length(), xmlRpcResponse.length());
                n2 = custid.indexOf("\"");
                if (n2 > 0) custid = custid.substring(0, n2);
                else custid = defaultCustid;
                }
            if (botResponse.endsWith(".")) botResponse = botResponse.substring(0, botResponse.length()-1);   // snnoying Pandorabots extra "."
        } catch (Exception ex) {
            ex.printStackTrace();
        }
        return botResponse;
    }

}