使用java代码连接ABAP Netweaver系统

2014-11-22

package com.sap.test;

import java.io.FileNotFoundException;
import java.io.IOException;
import org.apache.commons.codec.binary.Base64;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.mime.HttpMultipartMode;
import org.apache.http.entity.mime.MultipartEntityBuilder;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;
@SuppressWarnings("deprecation")
public class test
{
     final private static String POST_PREFIX = "https://ldai2ag3.wdf.sap.corp:44356/sap/crm/zajax?sap-client=001&query=";
     private static String getRequestURL(String str) {
     String url = POST_PREFIX + str;
      url = url + "&sid=" + Math.random();
     return url;
     }
     private static void sendHTTPPostRequest(String str) throws FileNotFoundException {
          HttpClient httpclient = new DefaultHttpClient();
          String raw = "WANGJER:Saptest1";
          String encoded = Base64.encodeBase64String(raw.getBytes());
          HttpPost httppost = new HttpPost(getRequestURL(str));
          MultipartEntityBuilder builder = MultipartEntityBuilder.create();
          builder.setMode(HttpMultipartMode.BROWSER_COMPATIBLE);

          builder.addTextBody("firstName", "Jerry");
          builder.addTextBody("lastName", "Wang");
          try {
                    httppost.addHeader("Content-Type","multipart/form-data; boundary=assdsfdffafasf");
                    httppost.addHeader("User-Agent","Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)");
                    httppost.addHeader("Authorization", "Basic " + encoded);

                    HttpResponse httpresponse = httpclient.execute(httppost);
                    HttpEntity resEntity = httpresponse.getEntity();
                    String response = EntityUtils.toString(resEntity);
                    System.out.println(response);
            }
            catch (IOException e) {
                    System.out.println(e.getLocalizedMessage());
                    e.printStackTrace();
                    System.out.println("error!");
                    }
              }
       public static void main(String[] args) throws ClientProtocolException, IOException {
              sendHTTPPostRequest("a");
       }
}

错误callstack 如下：

sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target at sun.security.ssl.Alerts.getSSLException(Unknown Source) at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source) at sun.security.ssl.Handshaker.fatalSE(Unknown Source) at sun.security.ssl.Handshaker.fatalSE(Unknown Source) at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source) at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source) at sun.security.ssl.Handshaker.processLoop(Unknown Source) at sun.security.ssl.Handshaker.process_record(Unknown Source) at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source) at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source) at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source) at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source) at org.apache.http.conn.ssl.SSLSocketFactory.connectSocket(SSLSocketFactory.java:535) at org.apache.http.conn.ssl.SSLSocketFactory.connectSocket(SSLSocketFactory.java:403) at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:177) at org.apache.http.impl.conn.ManagedClientConnectionImpl.open(ManagedClientConnectionImpl.java:304) at org.apache.http.impl.client.DefaultRequestDirector.tryConnect(DefaultRequestDirector.java:611) at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:446) at org.apache.http.impl.client.AbstractHttpClient.doExecute(AbstractHttpClient.java:863) at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:82) at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:106) at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:57) at multipleForm.sendHTTPPostRequest(multipleForm.java:95) at multipleForm.main(multipleForm.java:110) Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target at sun.security.validator.PKIXValidator.doBuild(Unknown Source) at sun.security.validator.PKIXValidator.engineValidate(Unknown Source) at sun.security.validator.Validator.validate(Unknown Source) at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source) at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source) at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source) … 20 more Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source) at java.security.cert.CertPathBuilder.build(Unknown Source) … 26 more error!

使用link http://code.naishe.in/2011/07/looks-like-article-no-more-unable-to.html 里介绍的方法之后，

问题消失

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solution

No more ‘unable to find valid certification path to requested target’.pdf