HttpClient远程RPC调用

1、pom.xml依赖

    <dependency>
      <groupId>org.apache.httpcomponents</groupId>
      <artifactId>httpcore</artifactId>
      <version>4.4</version>
    </dependency>
 
    <dependency>
      <groupId>org.apache.httpcomponents</groupId>
      <artifactId>httpclient</artifactId>
      <version>4.5.2</version>
    </dependency>

2、post调用，JSON参数

/**
* HttpClient Json 请求接口
* @return json
*/
public static JSONObject request(String url,JSONObject json) {
RequestConfig config = RequestConfig.custom()
.setConnectTimeout(8 * 1000) //设置连接超时时间，单位毫秒
.setSocketTimeout(8 * 1000) //请求获取数据的超时时间，单位毫秒
.build();
CloseableHttpClient httpclient = HttpClientBuilder.create().setDefaultRequestConfig(config).build();
HttpPost post = new HttpPost(url);
StringEntity params = new StringEntity(json.toString(), "utf-8");
params.setContentType("text/html;charset=UTF-8");
params.setContentEncoding("UTF-8");
post.setEntity(params);
JSONObject response = null;
try {
HttpResponse res = httpclient.execute(post);
if(res.getStatusLine().getStatusCode() == HttpStatus.SC_OK){
String result = EntityUtils.toString(res.getEntity());// 返回json格式：
response = JSONObject.parseObject(result);
}else{
System.out.println(res.getStatusLine().getStatusCode());
}

} catch (Exception e) {
e.printStackTrace();
}

return response;
}