JAVA 后台实现 https 请求——POST

需要引入相关的JAR包：

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import org.apache.http.HttpEntity;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.protocol.HttpClientContext;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.impl.client.RedirectLocations;
import org.apache.http.protocol.BasicHttpContext;
import org.apache.http.protocol.HttpContext;
import org.apache.http.util.EntityUtils;
import org.apache.commons.io.FileUtils;
import org.apache.http.entity.mime.MultipartEntityBuilder;
import org.apache.http.entity.mime.content.FileBody;
import org.apache.http.entity.ContentType;

maven 配置：

<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.1</version>
</dependency>
<dependency>
<groupId>bsh</groupId>
<artifactId>bsh</artifactId>
<version>1.3.0</version>
</dependency>
<dependency>
<groupId>net.sf.json-lib</groupId>
<artifactId>json-lib</artifactId>
<version>2.4</version>
<classifier>jdk15</classifier>
</dependency>

<dependency>
<groupId>com.ning</groupId>
<artifactId>async-http-client</artifactId>
<version>1.9.40</version>
</dependency>
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpcore</artifactId>
<version>4.3.2</version>
</dependency>
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
<version>4.3.2</version>
</dependency>
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpmime</artifactId>
<version>4.3.2</version>
</dependency>
<dependency>

具体实现方法，根据服务器需要的json格式

public static JSONObject httpPost(String url, Object data) throws OApiException {
HttpPost httpPost = new HttpPost(url);
CloseableHttpResponse response = null;
CloseableHttpClient httpClient = HttpClients.createDefault();
RequestConfig requestConfig = RequestConfig.custom().
setSocketTimeout(2000).setConnectTimeout(2000).build();
httpPost.setConfig(requestConfig);
httpPost.addHeader("Content-Type", "application/json");
try {
StringEntity requestEntity = new StringEntity(JSON.toJSONString(data), "utf-8");
httpPost.setEntity(requestEntity);
response = httpClient.execute(httpPost, new BasicHttpContext());
if (response.getStatusLine().getStatusCode() != 200) {
System.out.println("request url failed, http code=" + response.getStatusLine().getStatusCode()
+ ", url=" + url);
return null;
}
HttpEntity entity = response.getEntity();
if (entity != null) {
String resultStr = EntityUtils.toString(entity, "utf-8");
JSONObject result = JSON.parseObject(resultStr);
if (result.getInteger("errcode") == 0) {
result.remove("errcode");
result.remove("errmsg");
return result;
} else {
System.out.println("request url=" + url + ",return value=");
System.out.println(resultStr);
int errCode = result.getInteger("errcode");
String errMsg = result.getString("errmsg");
throw new OApiException(errCode, errMsg);
}
}
} catch (IOException e) {
System.out.println("request url=" + url + ", exception, msg=" + e.getMessage());
e.printStackTrace();
} finally {
if (response != null) try {
response.close();
} catch (IOException e) {
e.printStackTrace();
}
}