调用第三方接口报错ssl证书相关错误问题解决方案

最新推荐文章于 2025-07-01 08:10:17 发布

小钟鸽鸽

最新推荐文章于 2025-07-01 08:10:17 发布

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分类专栏：接口调用文章标签： ssl https java

本文链接：https://blog.youkuaiyun.com/zxc88546/article/details/122555322

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本文介绍了一种使用HttpClient调用HTTPS接口时遇到的SSL证书错误，并提供了解决方案，包括如何忽略证书验证。

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这是本人开通账号后的第一篇文章，平时上班比较忙没有多余的时间来写博客，今天难得闲下来统计下前两天遇到的一个问题以及我的处理方式。

事情发生在2天前，我使用httpclient调用第三方接口时，没有注意第三方接口是https的，众所周知httpClient是不能直接调用https的，直接调用会报SSL证书相关错误，刚开始呢没注意是我的工具类的问题，提示我没有信任该域名的证书，于是我把域名对应的证书下载下来添加到了本地的jre信任中去，解决了这个问题。可以参考以下的链接：

彻底解决unable to find valid certification path to requested target - 进击的Ace - 博客园

现在问题是解决了，接口也调通了，但新的问题又来了，我是要发布在测试环境进行测试的，测试通过后还要部署在正式环境上去，现在这样操作岂不是两边的服务器我都要添加jre信任才行吗？也是直到这个时候我才发现原来是我的工具类是httpClient调用的原因，附上我的工具类~

如下：

import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.ContentType;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;

import java.io.IOException;

public class HttpClientUtil {

    public static String doPostJson(String url, String json) {
        CloseableHttpClient httpClient = HttpClients.createDefault();
        CloseableHttpResponse response = null;
        String resultString = "";
        try {
            HttpPost httpPost = new HttpPost(url);
            StringEntity entity = new StringEntity(json, ContentType.APPLICATION_JSON);
            httpPost.setEntity(entity);
            response = httpClient.execute(httpPost);
            resultString = EntityUtils.toString(response.getEntity(), "utf-8");
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                response.close();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
        return resultString;
    }
    
}

此时就有了好的解决方案，直接换一个工具类就行，但是如果说我非要使用httpClient工具类调用https的第三方接口该怎么处理呢？是否有相关的代码或者httpClient工具类的工具类让它去调用的时候忽略证书或者是自动添加信任呢？于是开始在网上疯狂找资料向同事大神请教，还真被我找到了.

代码如下：

import org.apache.http.conn.ClientConnectionManager;
import org.apache.http.conn.scheme.Scheme;
import org.apache.http.conn.scheme.SchemeRegistry;
import org.apache.http.conn.ssl.SSLSocketFactory;
import org.apache.http.impl.client.DefaultHttpClient;

import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;

public class SSLClient extends DefaultHttpClient {

    public SSLClient() throws Exception{
        super();
        SSLContext ctx = SSLContext.getInstance("TLS");
        X509TrustManager tm = new X509TrustManager() {
            @Override
            public void checkClientTrusted(X509Certificate[] chain,
                                           String authType) throws CertificateException {
            }
            @Override
            public void checkServerTrusted(X509Certificate[] chain,
                                           String authType) throws CertificateException {
            }
            @Override
            public X509Certificate[] getAcceptedIssuers() {
                return null;
            }
        };
        ctx.init(null, new TrustManager[]{tm}, null);
        SSLSocketFactory ssf = new SSLSocketFactory(ctx,SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER);
        ClientConnectionManager ccm = this.getConnectionManager();
        SchemeRegistry sr = ccm.getSchemeRegistry();
        sr.register(new Scheme("https", 443, ssf));
    }

}

按照我和我同事大神钻(hu)研(shuo)得(ba)出(dao),这个工具类可以让我们使用httpClient工具类调用https接口时忽略证书，或者说不去验证证书。于是我修改了下我的httpClient工具类，附图~

代码如下：

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.ContentType;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicHeader;
import org.apache.http.util.EntityUtils;

import java.io.IOException;

public class HttpClientUtil {

    public static String doPostJson(String url, String json) {
        CloseableHttpClient httpClient = HttpClients.createDefault();
        CloseableHttpResponse response = null;
        String resultString = "";
        try {
            HttpPost httpPost = new HttpPost(url);
            StringEntity entity = new StringEntity(json, ContentType.APPLICATION_JSON);
            httpPost.setEntity(entity);
            response = httpClient.execute(httpPost);
            resultString = EntityUtils.toString(response.getEntity(), "utf-8");
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                response.close();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
        return resultString;
    }
    public static String doPost(String url,String jsonstr){
        HttpClient httpClient = null;
        HttpPost httpPost = null;
        String result = null;
        try{
            httpClient = new SSLClient();
            httpPost = new HttpPost(url);
            httpPost.addHeader("Content-Type", "application/json");
            if(jsonstr != null){
                StringEntity se = new StringEntity(jsonstr);
                se.setContentType("text/json");
                se.setContentEncoding(new BasicHeader("Content-Type", "application/json"));
                httpPost.setEntity(se);
            }
            HttpResponse response = httpClient.execute(httpPost);
            if(response != null){
                HttpEntity resEntity = response.getEntity();
                if(resEntity != null){
                    result = EntityUtils.toString(resEntity,"UTF-8");
                }
            }
        }catch(Exception ex){
            ex.printStackTrace();
        }
        return result;
    }
}

之前调用的是httpclient.doPostJson方法，修改后直接调用.doPost方法，本地测试和在生产环境都没问题，完美解决~

不知道这种方法会不会存在弊端，欢迎各位前辈在评论区指出错误。

PS:这种方法仅适用于强迫症程序员，正常调用还请另使用RestTemplate相关模板~