简单使用 HttpClient 工具 | Jalen's Blog = Follow your heart = A happy life

说明：访问远程服务器数据，可以使用 SUN 公司提供的 HttpURLConnection 对象，也可以使用 Apache 的 HttpClient，这里测试的是 HttpClient。

	public static String post(){
	String result = "";
	HttpClient client = new DefaultHttpClient();
	String url = "http://... ...";
	HttpPost post = new HttpPost(url);
	List<NameValuePair> paramList = new ArrayList<>();
	BasicNameValuePair param1 = new BasicNameValuePair("username","jalen");
	BasicNameValuePair param2 = new BasicNameValuePair("password","123456");
	paramList.add(param1);
	paramList.add(param2);

	try {
	post.setEntity(new UrlEncodedFormEntity(paramList,"UTF-8"));
	HttpResponse response = client.execute(post);
	if (response.getStatusLine().getStatusCode()==200){
	result = EntityUtils.toString(response.getEntity());
	System.out.println(result);
	}
	}catch (IOException ioe){
	ioe.printStackTrace();
	}
	return result;
	}

使用 postman 传参，注意当提交参数里带有文件格式的数据，设置 contentType，使用 form-data 进行提交，表单提交的 contentType 一般默认是 x-www-form-urlencoded

	public static String get(){
	String result = "";

	try{
	HttpClient httpClient = new DefaultHttpClient();
	String url = "http://... ...?username=&password=";
	HttpGet httpGet = new HttpGet(url);
	HttpResponse httpResponse = httpClient.execute(httpGet);
	if(httpResponse.getStatusLine().getStatusCode()==200){
	result = EntityUtils.toString(httpResponse.getEntity());
	}
	}catch(IOException ioe){
	ioe.printStackTrace();
	}
	return result;
	}

直接网页访问 url 即可测试