通过 JAVA 调用 API 时如何发布 xml 数据？

Question

我正在创建一个应用程序，我想将 xml 数据直接（没有键值对）发布到 API。 API 需要在代码中完成的认证认证。现在我想将数据发布到相同的 URL。

这是我想做的：

我当前的代码是：

@Override
    public String demoAPI(String xmlData) {
        StringBuilder sb = new StringBuilder();
        String output="";
    try {
        KeyStore clientStore = KeyStore.getInstance("PKCS12");
        clientStore.load(new FileInputStream(new File("path-to-pfx-file")),
                "password".toCharArray());
        KeyManagerFactory kmf = KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm());
        kmf.init(clientStore, "password".toCharArray());
        KeyManager[] kms = kmf.getKeyManagers();
        KeyStore trustStore = KeyStore.getInstance("JKS");
        trustStore.load(new FileInputStream("path-to-jks-file"), "password".toCharArray());
        TrustManagerFactory tmf = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
        tmf.init(trustStore);
        TrustManager[] tms = tmf.getTrustManagers();
        final SSLContext sslContext = SSLContext.getInstance("TLS");
        sslContext.init(kms, tms, new SecureRandom());
        SSLContext.setDefault(sslContext);
        HostnameVerifier hostnameVerifier = NoopHostnameVerifier.INSTANCE;
        HttpsURLConnection.setDefaultSSLSocketFactory(sslContext.getSocketFactory());
        HttpsURLConnection.setDefaultHostnameVerifier(hostnameVerifier);
        URL url = new URL("URL");
        HttpsURLConnection con = (HttpsURLConnection) url.openConnection();
        con.setRequestMethod("GET");
        con.setConnectTimeout(100000);
        con.setSSLSocketFactory(sslContext.getSocketFactory());
        con.connect();
        BufferedReader br = new BufferedReader(new InputStreamReader(con.getInputStream()));
        String line;
        while ((line = br.readLine()) != null) {
            sb.append(line + "\n");
        }
        br.close();
        System.out.println(sb.toString());
        output = sb.toString();
    } catch (Exception e) {
        e.printStackTrace();
        output = e.getMessage();
    }
    return output;
}

然而，对于相同的 url，我想从方法中发布 xmlData。 我怎样才能做到这一点 ？之后我应该在代码中更改什么 con.setRequestMethod("POST"); ?

Answer 1

你有一个 url，你有一些 XML 可以通过 HTTP 发布这个 url。而您的 post 请求是一个 SOAP 请求，您可以在此请求的正文中发送此 soap 消息。因此，与许多开发人员所做的没有什么特别或不同的。使用java.net 或Apache 或其他方式通过http 发布您的soap 数据。以下是执行此操作的代码示例：

HttpsURLConnection con = null;
try{
    URL url = new URL("URL");
    con = (HttpsURLConnection) url.openConnection();
    con.setRequestMethod("POST");
    con.setRequestProperty("content-type", "application/x-www-form-urlencoded");
    con.setRequestProperty("Content-Language", "application/soap+xml; charset=utf-8"); // request properties, set your needs
    con.setDoOutput(true);
    OutputStream os = con.getOutputStream();
    os.write(xmlData.getBytes("utf-8"));
    os.close();

}catch(Exception e){
      e.printStackTrace();
 }finally{
      con.disconnect();
 }

另一种选择是使用Apache 库。和代码：

 HttpPost httpPost = new HttpPost("URL");          
 StringEntity strEntity = new StringEntity(xmlData, "text/xml", "UTF-8");

 strEntity.setContentType("text/xml");  
 httpPost.setHeader("Content-Type","application/soap+xml;charset=UTF-8");
 httpPost.setEntity(strEntity);  
 HttpClient httpclient = new DefaultHttpClient();
 BasicHttpResponse httpResponse = (BasicHttpResponse) httpclient.execute(httpPost);