03_HttpClient_Post请求

【实例1.最最最简洁的POST请求】

@Test
public void test1() throws Exception{
    //1.创建Htpclient实例（可关闭 Closeable）
    CloseableHttpClient httpClient =HttpClients.createDefault();

    //2.创建一个HTTP POST请求的HttpPost实例
    HttpPost httpPost=new HttpPost("http://www.baidu.com");

    //3.执行请求，获得响应的实例
    CloseableHttpResponse response=httpClient.execute(httpPost);

    response.close();
    httpClient.close();
}

【实例2.带Entity的Post请求】

@Test
public void test2() throws Exception{
    //1.创建Htpclient实例（可关闭 Closeable）
    CloseableHttpClient httpClient =HttpClients.createDefault();

    //2.创建一个HTTP POST请求的HttpPost实例
    HttpPost httpPost=new HttpPost("http://www.baidu.com");

    //设置POST请求的参数
    List<NameValuePair> params=new ArrayList<NameValuePair>();
    params.add(new BasicNameValuePair("startDate", "2016-02-10"));
    params.add(new BasicNameValuePair("endDate", "2016-07-04"));
    HttpEntity urlEntity=new UrlEncodedFormEntity(params,"UTF-8");
    //添加参数至Post请求中
    httpPost.setEntity(urlEntity);

    //3.执行请求，获得响应的实例
    CloseableHttpResponse response=httpClient.execute(httpPost);

    response.close();
    httpClient.close();
}

【实例3.设置代理使用Fiddler抓取对应的Entity】

@Test
public void testRequestConfigPost() throws ClientProtocolException, IOException{
    CloseableHttpClient  httpclient=HttpClients.createDefault();

    HttpPost httpPost=new  HttpPost("http://www.baidu.com");

    /**设置请求和传输的超时时间**/
    RequestConfig.Builder builder=RequestConfig.custom()
                                .setConnectionRequestTimeout()
                                .setConnectTimeout()
                                .setSocketTimeout();
    String proxy="127.0.0.1:8888";
    builder.setProxy(HttpHost.create(proxy));  //设置代理
    RequestConfig requestConfig=builder.build();

    httpPost.setConfig(requestConfig);  //将配置requestConfig设置到HttpGet请求中

    //设置POST请求的参数
    List<NameValuePair> params=new ArrayList<NameValuePair>();
    params.add(new BasicNameValuePair("startDate", "2016-02-10"));
    params.add(new BasicNameValuePair("endDate", "2016-07-04"));
    HttpEntity urlEntity=new UrlEncodedFormEntity(params,"UTF-8");
    //添加参数至Post请求中
    httpPost.setEntity(urlEntity);

    CloseableHttpResponse response=httpclient.execute(httpPost);

    response.close();
    httpclient.close();
}

[ 使用Fiddler抓取结果 ]