不同系统中接口之间的发送和接收数据:这个需求可以使用Httpclient这种方法进行调用,下边这个工具类包含了get和post两种方法,post发送的是json格式的字符串,get获得的是String字符串,可以使用json解析成 json格式的字符串
package com.englishcode.test3.utils;
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.SSLConnectionSocketFactory;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.ssl.SSLContextBuilder;
import org.apache.http.ssl.TrustStrategy;
import org.apache.http.util.EntityUtils;
import javax.net.ssl.SSLContext;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
public class HttpUtils {
/*
Http协议GET请求
*/
public static String httpGet(String url) throws Exception{
//初始化HttpClient
CloseableHttpClient httpClient = HttpClients.createDefault();
//创建HttpGet
HttpGet httpGet = new HttpGet(url);
//发起请求,获取response对象
CloseableHttpResponse response = httpClient.execute(httpGet);
//获取请求状态码
//response.getStatusLine().getStatusCode();
//获取返回数据实体对象
HttpEntity entity = response.getEntity();
//转为字符串
String result = EntityUtils.toString(entity,"UTF-8");
return result;
}
/*
Http协议Post请求
*/
public static String httpPost (String url,String json) throws Exception{
//初始HttpClient
CloseableHttpClient httpClient = HttpClients.createDefault();
//创建Post对象
HttpPost httpPost = new HttpPost(url);
//设置Content-Type
httpPost.setHeader("Content-Type","application/json");
//写入JSON数据
httpPost.setEntity(new StringEntity(json));
//发起请求,获取response对象
CloseableHttpResponse response = httpClient.execute(httpPost);
//获取请求码
//response.getStatusLine().getStatusCode();
//获取返回数据实体对象
HttpEntity entity = response.getEntity();
//转为字符串
String result = EntityUtils.toString(entity,"UTF-8");
return result;
}
public static String httpsGet(String url) throws Exception{
CloseableHttpClient hp = createSSLClientDefault();
HttpGet hg = new HttpGet(url);
CloseableHttpResponse response = hp.execute(hg);
HttpEntity entity = response.getEntity();
String content = EntityUtils.toString(entity,"UTF-8");
hp.close();
return content;
}
public static String httpsPost(String url, String json) throws Exception{
CloseableHttpClient hp = createSSLClientDefault();
HttpPost httpPost = new HttpPost(url);
httpPost.setHeader("Content-Type","application/json");
httpPost.setEntity(new StringEntity(json));
CloseableHttpResponse response = hp.execute(httpPost);
HttpEntity entity = response.getEntity();
String content = EntityUtils.toString(entity,"UTF-8");
hp.close();
return content;
}
public static CloseableHttpClient createSSLClientDefault() throws Exception{
SSLContext sslContext = new SSLContextBuilder().loadTrustMaterial(null, new TrustStrategy(){
//信任所有
public boolean isTrusted(X509Certificate[] chain, String authType) throws CertificateException {
return true;
}
}).build();
SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(sslContext);
return HttpClients.custom().setSSLSocketFactory(sslsf).build();
}
}