在java中將等同於下面的curl命令

Question

我需要將下面的curl命令轉換爲java命令。

$curl_handle = curl_init(); 

curl_setopt ($curl_handle, CURLOPT_URL,$url);`enter code here` 
curl_setopt ($curl_handle, CURLOPT_FOLLOWLOCATION, 1); 
curl_setopt ($curl_handle, CURLOPT_RETURNTRANSFER, 1); 
curl_setopt ($curl_handle, CURLOPT_SSL_VERIFYPEER, 0); 
curl_setopt ($curl_handle, CURLOPT_POST, 1); 
curl_setopt ($curl_handle, CURLOPT_POSTFIELDS, $postfields); 

//echo $postfields; 

$curl_result = curl_exec ($curl_handle) or die ("There has been a CURL_EXEC error"); 

Answer 1

Http(s)UrlConnection可能是您的首選武器：

public String sendData() throws IOException { 
    // curl_init and url 
    URL url = new URL("http://some.host.com/somewhere/to/"); 
    HttpURLConnection con = (HttpURLConnection) url.openConnection(); 

    // CURLOPT_POST 
    con.setRequestMethod("POST"); 

    // CURLOPT_FOLLOWLOCATION 
    con.setInstanceFollowRedirects(true); 

    String postData = "my_data_for_posting"; 
    con.setRequestProperty("Content-length", String.valueOf(postData.length())); 

    con.setDoOutput(true); 
    con.setDoInput(true); 

    DataOutputStream output = new DataOutputStream(con.getOutputStream()); 
    output.writeBytes(postData); 
    output.close(); 

    // "Post data send ... waiting for reply"); 
    int code = con.getResponseCode(); // 200 = HTTP_OK 
    System.out.println("Response (Code):" + code); 
    System.out.println("Response (Message):" + con.getResponseMessage()); 

    // read the response 
    DataInputStream input = new DataInputStream(con.getInputStream()); 
    int c; 
    StringBuilder resultBuf = new StringBuilder(); 
    while ((c = input.read()) != -1) { 
     resultBuf.append((char) c); 
    } 
    input.close(); 

    return resultBuf.toString(); 
} 

我不太肯定的HTTPS_VERIFYPEER-thing，但這可能會給你一個起點。

Answer 2

查看java.net.URL和java.net.URLConnection庫。

URL url = new URL("yourUrl.com"); 

然後用一個InputStreamReader &的BufferedReader。在甲骨文例如

的更多信息：http://docs.oracle.com/javase/tutorial/networking/urls/readingWriting.html

這也可能有助於：How to use cURL in Java?