解决Java REST客户端SSL握手异常：绕过证书与主机名验证

<dependency>
    <groupId>org.apache.httpcomponents</groupId>
    <artifactId>httpclient</artifactId>
    <version>4.5.13</version> <!-- 请使用最新稳定版本 -->
</dependency>
<dependency>
    <groupId>org.apache.httpcomponents</groupId>
    <artifactId>httpcore</artifactId>
    <version>4.4.13</version> <!-- 与httpclient版本匹配 -->
</dependency>

import org.apache.http.auth.AuthenticationException;
import org.apache.http.auth.UsernamePasswordCredentials;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.config.Registry;
import org.apache.http.config.RegistryBuilder;
import org.apache.http.conn.socket.ConnectionSocketFactory;
import org.apache.http.conn.socket.PlainConnectionSocketFactory;
import org.apache.http.conn.ssl.NoopHostnameVerifier;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.conn.ssl.TrustSelfSignedStrategy;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.auth.BasicScheme;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
import org.apache.http.ssl.SSLContextBuilder;
import org.apache.http.protocol.HTTP; // For HTTP.UTF_8

import javax.net.ssl.SSLContext;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.security.KeyManagementException;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;

public class RestClientWithCustomSSL {

    public static void main(String[] args) throws NoSuchAlgorithmException, KeyStoreException, KeyManagementException, AuthenticationException, ClientProtocolException, IOException {

        String requestBody = "{\"key\": \"value\"}"; // 示例JSON请求体
        String targetUrl = "https://xxx.xx.xxx.xx:port/restService"; // 目标URL
        String username = "USERNAME";
        String password = "PASSWORD";

        // 1. 构建SSLContext，信任所有自签名证书
        SSLContext sslContext = SSLContextBuilder.create()
                .loadTrustMaterial(null, new TrustSelfSignedStrategy()) // 信任自签名证书策略
                .build();

        // 2. 创建SSLConnectionSocketFactory，禁用主机名验证
        SSLConnectionSocketFactory sslConnectionSocketFactory = new SSLConnectionSocketFactory(
                sslContext,
                NoopHostnameVerifier.INSTANCE // 禁用主机名验证
        );

        // 3. 注册HTTP和HTTPS连接工厂
        Registry<ConnectionSocketFactory> socketFactoryRegistry = RegistryBuilder.<ConnectionSocketFactory>create()
                .register("http", PlainConnectionSocketFactory.getSocketFactory())
                .register("https", sslConnectionSocketFactory)
                .build();

        // 4. 使用连接管理器创建HttpClient
        PoolingHttpClientConnectionManager cm = new PoolingHttpClientConnectionManager(socketFactoryRegistry);
        cm.setMaxTotal(100); // 设置最大连接数
        cm.setDefaultMaxPerRoute(20); // 设置每个路由的最大连接数

        CloseableHttpClient client = HttpClients.custom()
                .setSSLSocketFactory(sslConnectionSocketFactory) // 应用自定义的SSL Socket Factory
                .setConnectionManager(cm)
                .build();

        try {
            // 5. 创建POST请求
            HttpPost request = new HttpPost(targetUrl);

            // 6. 添加Basic认证头
            UsernamePasswordCredentials creds = new UsernamePasswordCredentials(username, password);
            request.addHeader(new BasicScheme().authenticate(creds, request, null));

            // 7. 设置请求体和内容类型
            StringEntity entity = new StringEntity(requestBody, HTTP.UTF_8);
            request.setEntity(entity);
            request.setHeader("Content-type", "application/json");

            // 8. 执行请求并处理响应
            CloseableHttpResponse response = client.execute(request);
            try {
                System.out.println("Response Status Line: " + response.getStatusLine());
                BufferedReader rd = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
                String line = "";
                StringBuilder result = new StringBuilder();
                while ((line = rd.readLine()) != null) {
                    result.append(line);
                }
                System.out.println("Response Body:\n" + result.toString());
            } finally {
                response.close();
            }
        } finally {
            client.close(); // 关闭HttpClient
        }
    }
}