客户端编程工具httpClient建立

最新推荐文章于 2025-06-04 08:51:58 发布

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最新推荐文章于 2025-06-04 08:51:58 发布

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这篇博客介绍了如何使用HttpClient工具在客户端进行HTTP请求。首先创建HttpClient对象，然后构建URI，添加参数，接着创建HttpGet请求并发送，最后处理响应并读取结果。

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CloseableHttpClient httpClient = null;
CloseableHttpResponse response = null;
String result = null;

try {
//1.创建HttpClient对象

httpClient = HttpClients.createDefault();

//2.创建uri
URIBuilder uriBuilder = new URIBuilder(url);
if(paramMap!=null && !paramMap.isEmpty()) {
for(String key:paramMap.keySet()) {
uriBuilder.addParameter(key, paramMap.get(key));
}
}
URI uri = uriBuilder.build();

//3.创建httpGet

HttpGet httpGet = new HttpGet(uri);

//4.发送http请求
response = httpClient.execute(httpGet);

//相应返回值
if(response !=null && response.getStatusLine().getStatusCode() == 200) {
result = EntityUtils.toString(response.getEntity(),"utf-8");
}

} catch (Exception e) {
e.printStackTrace();
}finally {
try {
httpClient.close();
if(response!=null) {
response.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}

return result;