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（

post请求时有一个选项是form-data，或者raw，使用raw可以请求成功，from-data不知道怎么组装key和value所以一直失败。非常不明白raw是什么意思，google百度都没有相关的解释。后来研究发现，其实raw方式使用的是纯字符串的数据上传方式，所以在POST之前，可能需要手工的把一些json/text/xml格式的数据转换成字符串，是一种post原始请求，区别于form-data这种常用的key-value方式

），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
       
         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
        
          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
         
           ps = new ArrayList
          
           ();        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();        }    }}