PHP 코드를 Java 코드로 변환

<?php

function bter_query($path, array $req = array()) {
// API settings, add your Key and Secret at here
$key = &#39;&#39;;
$secret = &#39;&#39;;

// generate a nonce to avoid problems with 32bits systems
$mt = explode(&#39; &#39;, microtime());
$req[&#39;nonce&#39;] = $mt[1].substr($mt[0], 2, 6);

// generate the POST data string
$post_data = http_build_query($req, &#39;&#39;, &#39;&&#39;);
$sign = hash_hmac(&#39;sha512&#39;, $post_data, $secret);

// generate the extra headers
$headers = array(
&#39;KEY: &#39;.$key,
&#39;SIGN: &#39;.$sign,
);

//!!! please set Content-Type to application/x-www-form-urlencoded if it&#39;s not the default value

// curl handle (initialize if required)
static $ch = null;
if (is_null($ch)) {
$ch = curl_init();
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_USERAGENT,
&#39;Mozilla/4.0 (compatible; Bter PHP bot; &#39;.php_uname(&#39;a&#39;).&#39;; PHP/&#39;.phpversion().&#39;)&#39;
);
}
curl_setopt($ch, CURLOPT_URL, &#39;https://bter.com/api/&#39;.$path);
curl_setopt($ch, CURLOPT_POSTFIELDS, $post_data);
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);

// run the query
$res = curl_exec($ch);

if ($res === false) throw new Exception(&#39;Curl error: &#39;.curl_error($ch));
//echo $res;
$dec = json_decode($res, true);
if (!$dec) throw new Exception(&#39;Invalid data: &#39;.$res);
return $dec;
}

function get_top_rate($pair, $type=&#39;BUY&#39;) {
$rate = 0;

// our curl handle (initialize if required)
static $ch = null;
if (is_null($ch)) {
$ch = curl_init();
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_USERAGENT,
&#39;Mozilla/4.0 (compatible; Bter PHP bot; &#39;.php_uname(&#39;a&#39;).&#39;; PHP/&#39;.phpversion().&#39;)&#39;
);
}
curl_setopt($ch, CURLOPT_URL, &#39;https://bter.com/api/1/depth/&#39;.$pair);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);

// run the query
$res = curl_exec($ch);
if ($res === false) throw new Exception(&#39;Could not get reply: &#39;.curl_error($ch));
//echo $res;
$dec = json_decode($res, true);
if (!$dec) throw new Exception(&#39;Invalid data: &#39;.$res);

if (strtoupper($type) == &#39;BUY&#39;) {
$r =  $dec[&#39;bids&#39;][0];
$rate = $r[0];
} else  {
$r = end($dec[&#39;asks&#39;]);
$rate = $r[0];
}

return $rate;
}


try {
// example 1: get funds
var_dump(bter_query(&#39;1/private/getfunds&#39;));

// example 2: place a buy order
$pair = &#39;ltc_btc&#39;;
$type = &#39;buy&#39;;
$rate = get_top_rate($pair, $type) * 1.01;
var_dump(bter_query(&#39;1/private/placeorder&#39;,
array(
&#39;pair&#39; => "$pair",
&#39;type&#39; => "$type",
&#39;rate&#39; => "$rate",
&#39;amount&#39; => &#39;0.01&#39;,
)
  )
);

// example 3: cancel an order
var_dump(bter_query(&#39;1/private/cancelorder&#39;, array(&#39;order_id&#39; => 125811)));

// example 4: get order status
var_dump(bter_query(&#39;1/private/getorder&#39;, array(&#39;order_id&#39; => 15088)));

//example 5: list all open orders
var_dump(bter_query(&#39;1/private/orderlist&#39;));

} catch (Exception $e) {
echo "Error:".$e->getMessage();

}
?>