Java中的原生post請求方式

更新時間：2023年10月07日 08:38:02 作者：沙皮狗你不懂

這篇文章主要介紹了Java中的原生post請求方式,具有很好的參考價值,希望對大家有所幫助,如有錯誤或未考慮完全的地方,望不吝賜教

1.post請求方式（有參數(shù)）

因為請求地址為https 需要配置不驗證證書

/**
     * post請求方式（有參數(shù)） 因為請求地址為https 需要配置不驗證證書
     */
    public static String post(String strUrl, Map<String, Object> params) {
        try {
            // 添加信任主機
            trustAllHosts();
            // 創(chuàng)建連接
            URL url = new URL(strUrl);
            HttpsURLConnection connection = (HttpsURLConnection) url.openConnection();
            // 不驗證配置
            connection.setHostnameVerifier(DO_NOT_VERIFY);
            // 設置請求方式
            connection.setRequestMethod("POST");
            connection.setRequestProperty("accept","*/*");
            connection.setRequestProperty("connection","Keep-Alive");
            connection.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
            // 設置發(fā)送數(shù)據的格式json
            connection.setRequestProperty("Content-Type","application/json");
            // 設置token appkey
            connection.setRequestProperty("apikey","Z31jdnojkYFg3z3mXourHjP5gmpg9Ms9");
            // 設置接收數(shù)據的格式json
            connection.setRequestProperty("Accept", "application/json");
            connection.setDoOutput(true);
            connection.setDoInput(true);
            connection.setUseCaches(false);
            connection.setInstanceFollowRedirects(true);
            OutputStreamWriter out = new OutputStreamWriter(connection.getOutputStream(), StandardCharsets.UTF_8);
            // 阿里巴巴的fastjson
            out.append(JSON.toJSONString(params));
            out.flush();
            out.close();
            // 請求成功
            int responseCode = connection.getResponseCode();
            if (responseCode == 200) {
                // 讀取響應
                StringBuffer respResult = new StringBuffer();
                BufferedReader reader = new BufferedReader(
                        new InputStreamReader(connection.getInputStream(), StandardCharsets.UTF_8));
                String line;
                while ((line = reader.readLine()) != null) {
                    respResult.append(line);
                }
                reader.close();
                log.info("Req Success{}" + respResult.toString());
                return respResult.toString();
            }
        } catch (Exception e) {
            log.info("Req Error{}" + e.getMessage());
            return e.getMessage();
        }
        // 請求失敗
        return null;
    }

/**
     * 不驗證配置
     */
    private final static HostnameVerifier DO_NOT_VERIFY = (hostname, session) -> true;
    /**
     * 添加信任主機
     */
    private static void trustAllHosts() {
        // 創(chuàng)建不驗證證書鏈的信任管理器 這里使用的是x509證書 此處的MyX509TrustManager()為實現(xiàn)重寫方法
        TrustManager[] trustAllCerts = new TrustManager[]{new MyX509TrustManager() {
            @Override
            public java.security.cert.X509Certificate[] getAcceptedIssuers() {
                return new java.security.cert.X509Certificate[]{};
            }
            @Override
            public void checkClientTrusted(X509Certificate[] chain, String authType) {}
            @Override
            public void checkServerTrusted(X509Certificate[] chain, String authType) {}
        }};
        // 安裝所有信任的信任管理器
        try {
            SSLContext sc = SSLContext.getInstance("TLS");
            sc.init(null, trustAllCerts, new java.security.SecureRandom());
            //HttpsURLConnection通過SSLSocket來建立與HTTPS的安全連接，SSLSocket對象是由SSLSocketFactory生成的。
            HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

2.post請求方式（無參數(shù)）

/**
     * post請求方式（無參數(shù)）
     */
    public static String post(String strUrl) {
        try {
            // 創(chuàng)建連接
            URL url = new URL(strUrl);
            HttpURLConnection connection = (HttpsURLConnection) url.openConnection();
            connection.setDoOutput(true);
            connection.setDoInput(true);
            connection.setUseCaches(false);
            connection.setInstanceFollowRedirects(true);
            // 設置請求方式
            connection.setRequestMethod("POST");
            connection.setRequestProperty("Connection", "keep-alive");
            // 設置接收數(shù)據的格式json
            connection.setRequestProperty("Accept", "application/json");
            // connection.setRequestProperty("Content-Type", "application/json"); // 設置發(fā)送數(shù)據的格式json
            connection.connect();
            // 獲取響應碼
            int code = connection.getResponseCode();
            // 請求成功
            if (code == 200) {
                // 讀取響應
                StringBuffer respResult = new StringBuffer();
                BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream(), StandardCharsets.UTF_8));
                String line;
                while ((line = reader.readLine()) != null) {
                    respResult.append(line);
                }
                reader.close();
                log.info("Req Success{}" + respResult.toString());
                return respResult.toString();
            }
        } catch (Exception e) {
            log.info("Req Error{}" + e.getMessage());
            return e.getMessage();
        }
        // 請求失敗
        return null;
    }

import java.security.cert.X509Certificate;
import javax.net.ssl.X509TrustManager;
/**
 * 重寫的X509TrustManager類
 */
public class MyX509TrustManager implements X509TrustManager { 
    @Override
    public void checkClientTrusted(X509Certificate[] chain, String authType) {}
    @Override
    public void checkServerTrusted(X509Certificate[] chain, String authType) {}
    @Override
    public X509Certificate[] getAcceptedIssuers() {
        return null; 
    } 
}