刚刚使用HttpClient想稍微的总结一下。
发现引入最新版本4.5，DefaultHttpClient等老版本常用的类已经过时了，不推荐使用了；去官网看了一下在4.3之后就抛弃了。官方推荐使用 DefaultHttpClient --> CloseableHttpClient，HttpResponse --> CloseableHttpResponse 。
public static void main(String[] args) {
CloseableHttpClient httpClient =
null;
CloseableHttpResponse response =
null;
//实例化CloseableHttpClient，并设置请求头
httpClient = HttpClients.
custom().addInterceptorLast(
new HttpRequestInterceptor() {
@Override
public void process(HttpRequest request
, HttpContext context)
throws HttpException
, IOException {
}
}).build()
;
//使用Get请求方式，Post的话使用HttpPost
HttpGet httpGet =
new HttpGet(
"http://apis.baidu.com/netpopo/weather/city?apikey=9cb67c01a7268662e9347952e7e11978")
;
//设置请求的参数，如请求的超时时间和客户端响应的时间
RequestConfig requestConfig= RequestConfig.
custom().setConnectTimeout(
2000).setSocketTimeout(
2000).build()
;
//把RequestConfig实例设置到httpget中
httpGet.setConfig(requestConfig)
;
try {
//发起请求
response = httpClient.execute(httpGet)
;
//判断请求状态是否成功
if( response.getStatusLine().getStatusCode() == HttpStatus.
SC_OK ){
//获取返回的结果
HttpEntity httpEntity = response.getEntity()
;
//EntityUtils.toString把返回结果抓换为字符串
System.
out.println(
"response:"+ EntityUtils.
toString(httpEntity))
;
}
}
catch (IOException e) {
e.printStackTrace()
;
}
}
}
