Java RestTemplate使用TLS1.0(关闭SSL验证)

1. 问题

使用RestTemplate调用Http API时，服务器是TLS1.0，但是客户端Java默认禁止TLS1.0，会报错：org.springframework.web.client.ResourceAccessException: I/O error on POST request for "https://10.255.200.114/health": The server selected protocol version TLS10 is not accepted by client preferences $TLS13, TLS12$ ; nested exception is javax.net.ssl.SSLHandshakeException: The server selected protocol version TLS10 is not accepted by client preferences $TLS13, TLS12$

2. 解决

修改java.security文件

bash 复制代码

# 以MacOS为例
vi /Library/Java/JavaVirtualMachines/zulu-11.jdk/Contents/Home/conf/security/java.security
# 将TLSv1.0 从jdk.tls.disabledAlgorithms中删除
jdk.tls.disabledAlgorithms=SSLv3, TLSv1.1, RC4, DES, MD5withRSA, \
DH keySize < 1024, EC keySize < 224, 3DES_EDE_CBC, anon, NULL, \
include jdk.disabled.namedCurves

RestTemplate代码

java 复制代码

public RestTemplate restTemplate() {
    SSLConnectionSocketFactory scsf = null;
    try {
        scsf = new SSLConnectionSocketFactory(
                SSLContexts.custom().loadTrustMaterial(null, new TrustSelfSignedStrategy()).build(),
                NoopHostnameVerifier.INSTANCE);
    } catch (NoSuchAlgorithmException e) {
        throw new RuntimeException(e);
    } catch (KeyManagementException e) {
        throw new RuntimeException(e);
    } catch (KeyStoreException e) {
        throw new RuntimeException(e);
    }
    Registry<ConnectionSocketFactory> registry = RegistryBuilder.<ConnectionSocketFactory>create()
            .register("http", PlainConnectionSocketFactory.getSocketFactory())
            .register("https", scsf)
            .build();
    PoolingHttpClientConnectionManager connectionManager = new PoolingHttpClientConnectionManager(registry);
    connectionManager.setMaxTotal(200);
    connectionManager.setDefaultMaxPerRoute(100);
    connectionManager.setValidateAfterInactivity(1000);
    RequestConfig requestConfig = RequestConfig.custom()
            .setSocketTimeout(45000)
            .setConnectTimeout(45000)
            // Timeout waiting for connection from pool
            .setConnectionRequestTimeout(45000)
            .build();

    ClientHttpRequestFactory factory = new HttpComponentsClientHttpRequestFactory(HttpClientBuilder.create()
            .setDefaultRequestConfig(requestConfig)
            .setConnectionManager(connectionManager)
            .build());
    return new RestTemplate(factory);
}