使用HttpClient工具类测试WebService接口(Soap)与Http接口，这里测试WebService接口，测试http接口实现方式类似

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Iterator;
import java.util.Map;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.InputStreamEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;
import org.testng.annotations.DataProvider;
import org.testng.annotations.Test;

public class HttpClientTest {
    // 使用Excel数据驱动取数据，TestNG的DataProvider注解提供数据非常方便，实现原理不必深究，它会自动调用ExcelDataProvider并返回一个Map给测试方法，如果使用DataProvider的Excel做数据驱动，应将测试方法的参数指定为Map
    @DataProvider(name = "datapro")
    public Iterator<Object[]> Data() {
        return new ExcelDataProvider("SoapTest", "testSoap");
    }

@Test(dataProvider = "datapro")
    public void httpPost(Map<String, String> data) throws IOException {
        // 对传输数据进行加密,这里使用SHA-1算法加密
        SoapKey soapKey = new SoapKey();
        String key = soapKey.getMessageDigest(data.get("data"), "SHA-1");
        // 将请求XML主体数据的"<"与">"替换成"&lt;"与"&gt;"
        String strData = new String(data.get("data").replace("<", "&lt;")).replace(">", "&gt;");
        // 请求的XML数据
        String soapReuqest = "<soapenv:Envelope xmlns:soapenv=\"http://schemas.xmlsoap.org/soap/envelope/\" xmlns:ser=\"http://service.ws.gpo.yy.com/\">"
                + "<soapenv:Header/>" + "<soapenv:Body><ser:sendRecv4Supplier><!--Optional:--><sUser>"
                + data.get("user") + "</sUser><!--Optional:--><sPwd>" + data.get("passwd")
                + "</sPwd><!--Optional:--><sJgbm>" + data.get("jgbm")
                + "</sJgbm><!--Optional:--><sVersion>1.0.0.0</sVersion><!--Optional:--><sXxlx>" + data.get("msgType")
                + "</sXxlx><!--Optional:--><sSign>" + key + "</sSign><!--Optional:-->" + "<xmlData>" + strData
                + "</xmlData>" + "</ser:sendRecv4Supplier></soapenv:Body></soapenv:Envelope>";
        // 1.创建httpClient客户端
        CloseableHttpClient httpclient = HttpClients.createDefault();

// 2.获取http post
        HttpPost httppost = new HttpPost(data.get("urlStr"));
        // 3.设置发送请求的字符集编码，如果不指定，就会默认以16进制的字符集编码发送，返回的响应结果就会乱码
        httppost.addHeader("Content-Type", "application/x-www-form-urlencoded; charset=" + "utf-8");
        // 4.把SOAP请求数据添加到http post方法中
        byte[] by = soapReuqest.getBytes("utf-8");
        InputStream inputStream = new ByteArrayInputStream(by, 0, by.length);
        InputStreamEntity reqEntity = new InputStreamEntity(inputStream, by.length);
        httppost.setEntity(reqEntity);

// 5.执行http post请求
        HttpResponse response = httpclient.execute(httppost);
        // 6.获取服务端返回的状态码
        int statuscode = response.getStatusLine().getStatusCode();
        // 7.获取服务器的返回实体
        HttpEntity entity = response.getEntity();

//8.将服务器返回的实体转化成字符串(请求响应结果)　　
        String responseMsg = EntityUtils.toString(entity);
        System.out.println("接口:" + data.get("msgType") + ":返回的状态码与响应结果:" + statuscode + ":" + responseMsg);
    }
}