HttpClient在HTTP协议接口测试中的使用

HTTP协议的接口测试中，使用到最多的就是GET请求与POST请求，其中POST请求有FORM参数提交请求与RAW请求，下面我将结合HttpClient来实现一下这三种形式：

一.GET请求: GET请求时，参数一般是写在链接上的，代码如下：

　　　　 public void get(String url){
		CloseableHttpClient httpClient = null;
		HttpGet httpGet = null;
	    try {
	    	httpClient = HttpClients.createDefault();
	    	RequestConfig requestConfig = RequestConfig.custom().setSocketTimeout(20000).setConnectTimeout(20000).build();      
	    	httpGet = new HttpGet(url);
	    	httpGet.setConfig(requestConfig);
			CloseableHttpResponse response = httpClient.execute(httpGet);
			HttpEntity httpEntity = response.getEntity();
			System.out.println(EntityUtils.toString(httpEntity,"utf-8"));
		} catch (ClientProtocolException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}finally{
			try {
				if(httpGet!=null){
					httpGet.releaseConnection();
				}
				if(httpClient!=null){
					httpClient.close();
				}
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
	}

 如果想把参数不写在链接上，单独的传进去，则可以这样：

	public void get(String url, Map<String, String> params){
		CloseableHttpClient httpClient = null;
		HttpGet httpGet = null;
	    try {
	    	httpClient = HttpClients.createDefault();
	    	RequestConfig requestConfig = RequestConfig.custom().setSocketTimeout(20000).setConnectTimeout(20000).build(); 
	    	String ps = "";
	    	for (String pKey : params.keySet()) {
	    		if(!"".equals(ps)){
	    			ps = ps + "&";
	    		}
				ps = pKey+"="+params.get(pKey);
			}
	    	if(!"".equals(ps)){
	    		url = url + "?" + ps;
	    	}
	    	httpGet = new HttpGet(url);
	    	httpGet.setConfig(requestConfig);
	    	CloseableHttpResponse response = httpClient.execute(httpGet);
			HttpEntity httpEntity = response.getEntity();
			System.out.println(EntityUtils.toString(httpEntity,"utf-8"));
		} catch (ClientProtocolException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}finally{
			try {
				if(httpGet!=null){
					httpGet.releaseConnection();
				}
				if(httpClient!=null){
					httpClient.close();
				}
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
	}

 二. POST请求的表单提交方式,代码如下:

	public void post(String url, Map<String, String> params){
		CloseableHttpClient httpClient = null;
		HttpPost httpPost = null;
	    try {
	    	httpClient = HttpClients.createDefault();
	    	RequestConfig requestConfig = RequestConfig.custom().setSocketTimeout(20000).setConnectTimeout(20000).build(); 
	    	httpPost = new HttpPost(url);
	    	httpPost.setConfig(requestConfig);
	    	List<NameValuePair> ps = new ArrayList<NameValuePair>();
	    	for (String pKey : params.keySet()) {
	    		ps.add(new BasicNameValuePair(pKey, params.get(pKey)));
			}
	    	httpPost.setEntity(new UrlEncodedFormEntity(ps));
	    	CloseableHttpResponse response = httpClient.execute(httpPost);
			HttpEntity httpEntity = response.getEntity();
			System.out.println(EntityUtils.toString(httpEntity,"utf-8"));
		} catch (ClientProtocolException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}finally{
			try {
				if(httpPost!=null){
					httpPost.releaseConnection();
				}
				if(httpClient!=null){
					httpClient.close();
				}
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
	}

 三. POST请求的RAW参数传递:

	public void post(String url, String body){
		CloseableHttpClient httpClient = null;
		HttpPost httpPost = null;
	    try {
	    	httpClient = HttpClients.createDefault();
	    	RequestConfig requestConfig = RequestConfig.custom().setSocketTimeout(20000).setConnectTimeout(20000).build(); 
	    	httpPost = new HttpPost(url);
	    	httpPost.setConfig(requestConfig);
	    	httpPost.setEntity(new StringEntity(body));
	    	CloseableHttpResponse response = httpClient.execute(httpPost);
			HttpEntity httpEntity = response.getEntity();
			System.out.println(EntityUtils.toString(httpEntity,"utf-8"));
		} catch (ClientProtocolException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}finally{
			try {
				if(httpPost!=null){
					httpPost.releaseConnection();
				}
				if(httpClient!=null){
					httpClient.close();
				}
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
	}