使用httpclient 调用selenium webdriver

2021-09-21 20:41:58

结合上次研究的selenium webdriver potocol ，自己写http request调用remote driver代替selenium API

selenium web driver Json protocol 相关请看 http://www.cnblogs.com/tobecrazy/p/5020741.html

我这里使用的是Gson 和 httpclient

首先，起一个remote sever

 java -Dwebdriver.ie.driver="IEDriverServer.exe"   -Dwebdriver.chrome.driver="chromedriver.exe"  -jar selenium-server-standalone-2.48.0.jar

这里要用到httpclient的Post 和delete method

创建一个httpclient对象

    HttpClient httpClient = HttpClients.createDefault();

创建一个post请求

    JsonObject setCapability = new JsonObject();

        setCapability.addProperty("browserName","firefox");

        JsonObject capability = new JsonObject();

        capability.add("desiredCapabilities",setCapability);

        HttpPost httpPost = new HttpPost(base);

创建一个delete 请求

     url = base + sessionId ;

         HttpDelete httpDelete = new HttpDelete(url);

从respose 中获取session ID

HttpResponse response = httpClient.execute(httpPost);

		try {

			HttpEntity entity = response.getEntity();

			if (entity != null) {

				System.out.println("Response content length: "

						+ entity.getContentLength());

				String resultEntity = EntityUtils.toString(entity);

				System.out.println("Response content: " + resultEntity);

		        JsonObject result= new JsonParser().parse(resultEntity).getAsJsonObject();

		        JsonElement  sessionIdJson = result.get("sessionId");

		        if(!sessionIdJson.isJsonNull())

		        sessionId =sessionIdJson.getAsString();

		        JsonElement  valueJson = result.get("value");

				if(!valueJson.isJsonNull())

				{

					JsonObject tm=valueJson.getAsJsonObject();

					JsonElement elementIdJson = tm.get("ELEMENT");

					if(elementIdJson!=null)

					elementId=elementIdJson.getAsString();

				}

			}

		} finally {

			((Closeable) response).close();

		}

全部代码如下：

import java.io.Closeable;

import java.io.IOException;

import java.io.UnsupportedEncodingException;

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.HttpDelete;

import org.apache.http.client.methods.HttpPost;

import org.apache.http.entity.StringEntity;

import org.apache.http.impl.client.HttpClients;

import org.apache.http.message.BasicHeader;

import org.apache.http.protocol.HTTP;

import org.apache.http.util.EntityUtils;

import com.google.gson.JsonElement;

import com.google.gson.JsonObject;

import com.google.gson.JsonParser;

public class webDriverJson {

    private static String base = "http://127.0.0.1:4444/wd/hub/session/";

    private static String elementId;

    static String sessionId = "";

    public static void main(String[] args) throws Exception, IOException {

        HttpClient httpClient = HttpClients.createDefault();

        JsonObject setCapability = new JsonObject();

        setCapability.addProperty("browserName","firefox");

        JsonObject capability = new JsonObject();

        capability.add("desiredCapabilities",setCapability);

        HttpPost httpPost = new HttpPost(base);

        //create session

        postExecutor(httpClient, httpPost, capability);

        String url = base + sessionId + "/url";

         httpPost = new HttpPost(url);

        JsonObject getUrl = new JsonObject();

        getUrl.addProperty("url", "http://www.baidu.com");

        postExecutor(httpClient, httpPost, getUrl);

        //find input box

        url = base + sessionId + "/element";

        httpPost = new HttpPost(url);

        JsonObject findElement = new JsonObject();

        findElement.addProperty("using", "id");

        findElement.addProperty("value", "kw");

        postExecutor(httpClient, httpPost, findElement);

        System.out.println(elementId);

        url = base + sessionId + "/element/"+elementId+"/value";

        httpPost = new HttpPost(url);

        JsonObject typeElement = new JsonObject();

        String json = "{\"value\":[\"webdriver\"]}";

        JsonParser jp = new JsonParser();

        typeElement = (JsonObject) jp.parse(json);

        postExecutor(httpClient, httpPost, typeElement);

        //find search button

        url = base + sessionId + "/element";

        httpPost = new HttpPost(url);

        JsonObject findSearchButton = new JsonObject();

        findSearchButton.addProperty("using", "id");

        findSearchButton.addProperty("value", "su");

        postExecutor(httpClient, httpPost, findSearchButton);

        System.out.println(elementId);

        url = base + sessionId + "/element/"+elementId+"/click";

        httpPost = new HttpPost(url);

        postExecutor(httpClient, httpPost,null);

        //delete session

         url = base + sessionId ;

         HttpDelete httpDelete = new HttpDelete(url);

        deleteExecutor(httpClient, httpDelete);

    }

    /**

     * @author Young

     * @param httpClient

     * @param httpPost

     * @param jo

     * @throws UnsupportedEncodingException

     * @throws IOException

     * @throws ClientProtocolException

     */

    public static void postExecutor(HttpClient httpClient, HttpPost httpPost,

            JsonObject jo) throws UnsupportedEncodingException, IOException,

            ClientProtocolException {

        if(jo!=null)

        {

            StringEntity input = new StringEntity(jo.toString());

            input.setContentEncoding("UTF-8");

            input.setContentEncoding(new BasicHeader(HTTP.CONTENT_TYPE,

                    "application/json"));

            httpPost.setEntity(input);

        }

        HttpResponse response = httpClient.execute(httpPost);

        try {

            HttpEntity entity = response.getEntity();

            if (entity != null) {

                System.out.println("Response content length: "

                        + entity.getContentLength());

                String resultEntity = EntityUtils.toString(entity);

                System.out.println("Response content: " + resultEntity);

                JsonObject result= new JsonParser().parse(resultEntity).getAsJsonObject();

                JsonElement  sessionIdJson = result.get("sessionId");

                if(!sessionIdJson.isJsonNull())

                sessionId =sessionIdJson.getAsString();

                JsonElement  valueJson = result.get("value");

                if(!valueJson.isJsonNull())

                {

                    JsonObject tm=valueJson.getAsJsonObject();

                    JsonElement elementIdJson = tm.get("ELEMENT");

                    if(elementIdJson!=null)

                    elementId=elementIdJson.getAsString();

                }

            }

        } finally {

            ((Closeable) response).close();

        }

    }

    /**

     * @author Young

     * @param httpClient

     * @param delete

     * @throws UnsupportedEncodingException

     * @throws IOException

     * @throws ClientProtocolException

     */

    public static void deleteExecutor(HttpClient httpClient, HttpDelete delete) throws UnsupportedEncodingException, IOException,

            ClientProtocolException {

        HttpResponse response = httpClient.execute(delete);

        try {

            HttpEntity entity = response.getEntity();

            if (entity != null) {

                System.out.println("Response content length: "

                        + entity.getContentLength());

                String resultEntity = EntityUtils.toString(entity);

                System.out.println("Response content: " + resultEntity);

                JsonObject result= new JsonParser().parse(resultEntity).getAsJsonObject();

                JsonElement  sessionIdJson = result.get("sessionId");

                if(!sessionIdJson.isJsonNull())

                sessionId =sessionIdJson.getAsString();

                JsonElement  valueJson = result.get("value");

                if(!valueJson.isJsonNull())

                {

                    JsonObject tm=valueJson.getAsJsonObject();

                    JsonElement elementIdJson = tm.get("ELEMENT");

                    if(elementIdJson!=null)

                    elementId=elementIdJson.getAsString();

                }

            }

        } finally {

            ((Closeable) response).close();

        }

    }

}

运行效果：

了解selenium 原理究竟有什么意义？

大多数人都会使用selenium去做自动化，但是不是每个人都了解selenium的原理，如果能掌握selenium原理

可以改造selenium API，使用webdriver protocol去做一些能够完善自动化测试框架的事情。、

比如，也许你在selenium自动化过程中会遇到get打开页面打不开，为了保证你脚本的健壮性，这时候你可以加入一段httprequest去获取

response的的关键值判断，如果不是2开头的可以设置refresh，再比如需要做一些准备性工作，比如环境配置也可以使用

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