HttpClient 初步——总结_uribuilder.setpath-优快云博客

本文提供了一个使用Java的HttpClient库发起GET请求的具体示例代码，展示了如何构建URL、设置参数并获取响应。此外还介绍了HttpGet类与其他相关类的关系。

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1.基本的代码框架

CloseableHttpClient httpClient = HttpClients.createDefault();
URI uri = null;
HttpGet httpGet = null;
CloseableHttpResponse response= null;
try {

uri = new URIBuilder().setScheme("http")

.setHost("www.google.com.hk")

.setPath("/search")

.setParameter("q", "httpclient")

.setParameter("btnG", "Google Search")

.setParameter("aq", "f")

.setParameter("oq", "")

.build();

httpGet = new HttpGet(uri);

response = httpClient.execute(httpGet);

HttpEntity entity = response.getEntity();

String html = EntityUtils.toString(

entity,

ContentType.getOrDefault(entity).getCharset().toString());

Logger.println(html);

} catch (ClientProtocolException e) {

e.printStackTrace();

} catch (IOException e) {

e.printStackTrace();

} catch (URISyntaxException e) {

e.printStackTrace();

} finally {

try {

response.close();

} catch (IOException e) {

e.printStackTrace();

}

}

2.基本的类之间的关系

/*上图中的MethodObject指的是HttpGet，HttpPost等类的对象，在HttpClient中http方法已经做了抽象，如果想进一步了解HttpClient的知识，请看我转载的这篇文章http://blog.youkuaiyun.com/coming_chen/article/details/24475227#t3*/