一、使用maven添加依赖

<dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpclient</artifactId>
            <version>4.5.3</version>
        </dependency>
        <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpmime</artifactId>
            <version>4.5.3</version>
</dependency>

二、使用httpClient调用

import org.apache.http.HttpEntity;
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.conn.ssl.NoopHostnameVerifier;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.conn.ssl.TrustStrategy;
import org.apache.http.entity.mime.MultipartEntityBuilder;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.ssl.SSLContexts;
import org.apache.http.util.EntityUtils;

import javax.net.ssl.*;
import java.io.*;
import java.net.URL;
import java.security.KeyManagementException;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;


public class Main {

    public static void main(String[] args) throws IOException, NoSuchAlgorithmException, KeyStoreException, KeyManagementException {

        String url = "https://128.10.140.221/api/data/qyzs-db/users/organization_api";
        try (CloseableHttpClient httpClient = createHttpClient()) {
            HttpGet httpGet = new HttpGet(url);
            try (CloseableHttpResponse httpResponse = httpClient.execute(httpGet)) {
                HttpEntity entity = httpResponse.getEntity();
                String result = EntityUtils.toString(entity);
                EntityUtils.consume(entity);
                
                System.out.printf(result);
            }
        }
    }


    private static CloseableHttpClient createHttpClient() throws KeyStoreException, NoSuchAlgorithmException, KeyManagementException {
        SSLContext sslcontext = SSLContexts.custom()
                .loadTrustMaterial(null, (chain, authType) -> true)
                .build();

        SSLConnectionSocketFactory sslSf = new SSLConnectionSocketFactory(sslcontext, null, null,
                new NoopHostnameVerifier());

        return HttpClients.custom().setSSLSocketFactory(sslSf).build();
    }
}

三、调用http接口

public String getURLData() throws Exception {
		//内网访问
		//String url = "http://128.10.140.221/api/data/qyzs-db/users/organization_api";
      
        String str = SendGET(url,null);
		return str;
	}