com.rest.samples.getReportFromJasperServerWithSeparateAuthFormatURL.java Source code

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Here is the source code for com.rest.samples.getReportFromJasperServerWithSeparateAuthFormatURL.java

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package com.rest.samples;

import java.awt.Desktop;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.HashMap;
import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.apache.http.HttpResponse;
import org.apache.http.auth.AuthScope;
import org.apache.http.auth.UsernamePasswordCredentials;
import org.apache.http.client.CredentialsProvider;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.BasicCredentialsProvider;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClientBuilder;
import samples.use.httpclient.SamplesUseHttpclient;
import org.apache.commons.lang3.text.StrSubstitutor;

/**
 *
 * @author cuahutli
 * genera una conexin con jasperserver y obtine un reporte que almacena en disco realizando con un CredentialsProvider 
 * y formateando la url con la libreria StrSubstitutor
 */
public class getReportFromJasperServerWithSeparateAuthFormatURL {
    public static void main(String[] args) {
        // TODO code application logic here
        Map<String, String> params = new HashMap<String, String>();
        params.put("host", "10.49.28.3");
        params.put("port", "8081");
        params.put("reportName", "vencimientos");
        params.put("parametros", "feini=2016-09-30&fefin=2016-09-30");
        StrSubstitutor sub = new StrSubstitutor(params, "{", "}");
        String urlTemplate = "http://{host}:{port}/jasperserver/rest_v2/reports/Reportes/{reportName}.pdf?{parametros}";
        String url = sub.replace(urlTemplate);

        try {
            CredentialsProvider cp = new BasicCredentialsProvider();
            cp.setCredentials(AuthScope.ANY, new UsernamePasswordCredentials("jasperadmin", "jasperadmin"));
            CloseableHttpClient hc = HttpClientBuilder.create().setDefaultCredentialsProvider(cp).build();

            HttpGet getMethod = new HttpGet(url);
            getMethod.addHeader("accept", "application/pdf");
            HttpResponse res = hc.execute(getMethod);
            if (res.getStatusLine().getStatusCode() != 200) {
                throw new RuntimeException("Failed : HTTP eror code: " + res.getStatusLine().getStatusCode());
            }

            InputStream is = res.getEntity().getContent();
            OutputStream os = new FileOutputStream(new File("vencimientos.pdf"));
            int read = 0;
            byte[] bytes = new byte[2048];

            while ((read = is.read(bytes)) != -1) {
                os.write(bytes, 0, read);
            }
            is.close();
            os.close();

            if (Desktop.isDesktopSupported()) {
                File pdfFile = new File("vencimientos.pdf");
                Desktop.getDesktop().open(pdfFile);
            }

        } catch (IOException ex) {
            Logger.getLogger(SamplesUseHttpclient.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

}