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既然这篇文章用的是nodejs和Java访问远程服务器的服务，那么咱们先用另一门编程语言，SAP的ABAP（我日常工作使用得最多的编程语言）来开发一个服务吧。
这是我用ABAP编程语言实现服务的类：ZCL_DIS_HTTP_HANDLER
看下nodejs代码。
下面的代码传入Buffer的WANGJER为我的用户名，123456为密码。使用的登录方式是Basic Authentication。
var request = require('request'); var getTokenOptions = { url: "https://<此处填入您的远程服务器上的服务地址url", method: "GET", headers: { 'Authorization': 'Basic ' + new Buffer("WANGJER:123456").toString('base64') } }; function getToken() { return new Promise(function(resolve,reject){ var requestC = request.defaults({jar: true}); console.time("Remote"); requestC(getTokenOptions,function(error,response,body){ console.log("response body: " + body); console.timeEnd("Remote"); resolve(response); }); }); } getToken().then(function(response) { });
java
下面代码的WANGJER为我的用户名，123456为密码。使用的登录方式是Basic Authentication。
package connectivity; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import org.apache.commons.codec.binary.Base64; import java.util.stream.Collectors; import org.apache.http.HttpResponse; import org.apache.http.client.ClientProtocolException; import org.apache.http.client.HttpClient; import org.apache.http.client.methods.HttpGet; import org.apache.http.impl.client.HttpClientBuilder; public class OPSystemConnectivity { static public void main(String[] arg){ final HttpGet get = new HttpGet("https://<您远程服务器的url"); HttpClient httpClient = HttpClientBuilder.create().build(); String raw = "WANGJER:123456"; String encoded = Base64.encodeBase64String(raw.getBytes()); get.setHeader("Authorization", "Basic " + encoded); HttpResponse response; try { long start = System.currentTimeMillis(); response = httpClient.execute(get); InputStream stream = response.getEntity().getContent(); String result = new BufferedReader(new InputStreamReader(stream)).lines() .parallel().collect(Collectors.joining(" ")); System.out.println("response: " + result); stream.close(); long end = System.currentTimeMillis() - start; System.out.println("time consumed: " + end ); } catch (ClientProtocolException e) { e.printStackTrace(); } catch (IOException | UnsupportedOperationException e) { e.printStackTrace(); } } }
