问题描述

使用RestTemplate发送HTTPS请求的时候，出现了这样的一个问题：

sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target

RestTemplate 默认不支持https协议

解决方案：

        第一种是忽略认证

        第二种是导入证书，比较复杂（比第一种安全） 

---

解决方案：

这里说一下第一种解决方案，忽略认证

RestTemplateConfig

package com.test.config;import java.nio.charset.Charset;
import java.util.List;import javax.net.ssl.SSLContext;import org.apache.http.conn.ssl.NoopHostnameVerifier;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.ssl.SSLContexts;
import org.apache.http.ssl.TrustStrategy;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.client.HttpComponentsClientHttpRequestFactory;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.StringHttpMessageConverter;
import org.springframework.web.client.RestTemplate;@Configuration
public class RestTemplateConfig{@Bean("restTemplate")public RestTemplate RestTemplate() {HttpComponentsClientHttpRequestFactory httpRequestFactory = new HttpComponentsClientHttpRequestFactory();httpRequestFactory.setConnectionRequestTimeout(30000);httpRequestFactory.setConnectTimeout(30000);httpRequestFactory.setReadTimeout(30000);return new RestTemplate(httpRequestFactory);}/*** 用于https请求，忽略认证* @return	unSSLRestTemplate*/@Bean("unSSLRestTemplate")public RestTemplate restTemplateHttps()  {RestTemplate restTemplate = null;try {TrustStrategy acceptingTrustStrategy = (chain, authType) -> true;SSLContext sslContext = SSLContexts.custom().loadTrustMaterial(null, acceptingTrustStrategy).build();SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(sslContext, NoopHostnameVerifier.INSTANCE);HttpClientBuilder clientBuilder = HttpClients.custom();CloseableHttpClient httpClient = clientBuilder.setSSLSocketFactory(sslsf).build();HttpComponentsClientHttpRequestFactory httpRequestFactory = new HttpComponentsClientHttpRequestFactory();httpRequestFactory.setConnectionRequestTimeout(30000);httpRequestFactory.setConnectTimeout(30000);httpRequestFactory.setReadTimeout(30000);httpRequestFactory.setHttpClient(httpClient);restTemplate = new RestTemplate(httpRequestFactory);//解决乱码List<HttpMessageConverter<?>> httpMessageConverters = restTemplate.getMessageConverters();httpMessageConverters.stream().forEach(httpMessageConverter ->{if(httpMessageConverter instanceof StringHttpMessageConverter){StringHttpMessageConverter messageConverter = (StringHttpMessageConverter)httpMessageConverter;messageConverter.setDefaultCharset(Charset.forName("UTF-8"));}});} catch (Exception e) {e.printStackTrace();}return restTemplate;}
}

测试代码

package com.test.service;import javax.annotation.Resource;import org.springframework.http.HttpEntity;
import org.springframework.http.HttpHeaders;
import org.springframework.http.MediaType;
import org.springframework.stereotype.Service;
import org.springframework.web.client.RestTemplate;import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;/*** http请求&https请求*/
@Service
public class TestService {//http请求@Resource(name = "restTemplate")private RestTemplate restTemplate;//https请求@Resource(name = "unSSLRestTemplate")private RestTemplate unSSLRestTemplate;/*** http请求*/public void interfaceHttp(JSONObject params) {//参数String json = params.toJSONString();//请求头HttpHeaders headers = new HttpHeaders();headers.add("Content-Type", MediaType.APPLICATION_JSON_VALUE);HttpEntity<String> formEntity = new HttpEntity<String>(json, headers);restTemplate.postForObject(URL, formEntity, String.class);}/*** https请求*/public void interfaceHttps(JSONObject params) {//参数String json = params.toJSONString();//请求头HttpHeaders headers = new HttpHeaders();headers.add("Content-Type", MediaType.APPLICATION_JSON_VALUE);HttpEntity<String> formEntity = new HttpEntity<String>(json, headers);unSSLRestTemplate.postForObject(URL, formEntity, String.class);}
}

说明：这里兼容http和https请求，只需要指定名称即可