如何使用RestTemplte发送https请求

最新推荐文章于 2025-08-07 17:10:14 发布

原创最新推荐文章于 2025-08-07 17:10:14 发布 · 1.2k 阅读

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#http #java #网络协议

本文介绍了如何在Spring中利用RestTemplate发送HTTPS请求。通过设置一个跳过HTTPS证书验证的工厂类，可以避免导入额外的依赖。只需在创建RestTemplate实例时应用此配置，之后的请求操作与HTTP相同。

RestTemplte是spring自带的一个http请求工具类,在用RestTemplte之前我也用过HttpCilent,okhttp和Hutool的http工具类,但这些都需要额外导包,如果只是简单需求的话完全可以使用spring自带的RestTemplte.默认RestTemplte只能发起http请求,想要实现https还需要做点配置:

首先你需要一个跳过https证书验证的工厂类,下面这个工厂类是我一开始接触后端请求http时在博客找到的,我自己也在用,也可以根据自己的业务需求修改

import com.alibaba.fastjson.JSONObject;
import com.longersoftware.logging.LogbackLogger;
import com.longersoftware.logging.LogbackLoggerFactory;
import org.springframework.http.client.SimpleClientHttpRequestFactory;

import javax.net.ssl.*;
import java.net.HttpURLConnection;
import java.security.cert.X509Certificate;
//简单封装一下对https的支持
public class HttpsClientRequestFactory extends SimpleClientHttpRequestFactory {
    private static final LogbackLogger logger = LogbackLoggerFactory.getLogger(SimpleClientHttpRequestFactory.class);

    @Override
    protected void prepareConnection(HttpURLConnection connection, String httpMethod) {
        try {
            //判断是否是https请求,是则进行如下配置,不是则使用http连接
            if (connection instanceof HttpsURLConnection){
                SSLContext sc = SSLContext.getInstance("SSL");
                sc.init(null, new TrustManager[] { new TrustAnyTrustManager() }, new java.security.SecureRandom());
                HttpsURLConnection conn = (HttpsURLConnection) connection;
                conn.setRequestProperty("accept", "*/*");
                conn.setRequestProperty("connection", "Keep-Alive");
                conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
                conn.setRequestProperty("Accept-Charset", "utf-8");
                conn.setRequestProperty("contentType", "utf-8");
                conn.setDoOutput(true);
                conn.setDoInput(true);
                conn.setSSLSocketFactory(sc.getSocketFactory());
                conn.setHostnameVerifier(new TrustAnyHostnameVerifier());
            }else {
                super.prepareConnection(connection, httpMethod);
            }
        } catch (Exception e) {
            logger.error(JSONObject.toJSONString(e).substring(0,300));
        }
    }
    //跳过证书验证
    private static class TrustAnyHostnameVerifier implements HostnameVerifier
    {
        @Override
        public boolean verify(String hostname, SSLSession session)
        {
            return true;
        }
    }
    private static class TrustAnyTrustManager implements X509TrustManager
    {
        @Override
        public void checkClientTrusted(X509Certificate[] chain, String authType)
        {
        }

        @Override
        public void checkServerTrusted(X509Certificate[] chain, String authType)
        {
        }

        @Override
        public X509Certificate[] getAcceptedIssuers()
        {
            return new X509Certificate[] {};
        }
    }
}

然后在创建RestTemplate对象的时候以这种方式创建即可

RestTemplate restTemplates = new RestTemplate(new HttpsClientRequestFactory());

其他的操作都是和http请求一样的,这里就不具体介绍RestTemplate 的使用方法了,博客上的其他大佬已经写的详细了.