edu.utk.gsda.CalaisHttpClient.java Source code

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Here is the source code for edu.utk.gsda.CalaisHttpClient.java

Source

package edu.utk.gsda;

import java.io.BufferedReader;
import java.io.InputStreamReader;

import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpStatus;
import org.apache.commons.httpclient.methods.PostMethod;
import org.apache.commons.httpclient.methods.StringRequestEntity;

public class CalaisHttpClient {
    private final String CALAIS_URL = "https://api.thomsonreuters.com/permid/calais"; //"http://api.opencalais.com/tag/rs/enrich";
    private HttpClient client;
    private PostMethod method;

    public void initMethod() {

        method = new PostMethod(CALAIS_URL);

        // Set mandatory parameters
        // method.setRequestHeader("x-calais-licenseID", "gffvtc7epu3tn7xkyrhbtdvk");
        method.setRequestHeader("x-ag-access-token", "5CSCGy1jw4x7vY0FtLERrHZHDaRwynKq");

        // Set input content type
        method.setRequestHeader("Content-Type", "TEXT/RAW; charset=UTF-8");
        //method.setRequestHeader("Content-Type", "text/html; charset=UTF-8");
        //method.setRequestHeader("Content-Type", "text/raw; charset=UTF-8");
        method.setRequestHeader("omitOutputtingOriginalText", "true");

        // Set response/output format
        // method.setRequestHeader("Accept", "text/simple");
        method.setRequestHeader("outputFormat", "application/json");

        // Enable Social Tags processing
        // method.setRequestHeader("enableMetadataType", "SocialTags");
        method.setRequestHeader("x-calais-selectiveTags", "socialtags");

    }

    public String getAnnotatedResult(String originString) {
        try {
            client = new HttpClient();
            client.getParams().setParameter("http.useragent", "Calais Rest Client");

            initMethod();

            method.setRequestEntity(new StringRequestEntity(originString, null, null));
            int returnCode = client.executeMethod(method);

            if (returnCode == HttpStatus.SC_OK) {
                BufferedReader reader = new BufferedReader(
                        new InputStreamReader(method.getResponseBodyAsStream(), "UTF-8"));

                StringBuffer stringBuffer = new StringBuffer();
                String line;
                while ((line = reader.readLine()) != null) {
                    stringBuffer.append(line);
                }

                reader.close();
                return stringBuffer.toString();
            } else {
                System.err.println("request failed: ");
                System.err.println("Got code: " + returnCode);
                return null;
            }

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

        return null;

    }

}