post 发送方式

/**

* post 方式 解码

*/

public static String getWebContentByPost(String urlString, String data,

final String charset, int timeout) throws IOException {

if (urlString == null || urlString.length() == 0) {

return null;

}

urlString = (urlString.startsWith("http://") || urlString.startsWith("https://")) ? urlString : ("http://" + urlString).intern();

URL url = new URL(urlString);

System.out.println("url=="+url);

HttpURLConnection connection = (HttpURLConnection) url.openConnection();

// 设置是否向connection输出，因为这个是post请求，参数要放在 http正文内，因此需要设为true

connection.setDoOutput(true);

connection.setDoInput(true);

connection.setRequestMethod("POST");

// Post 请求不能使用缓存

connection.setUseCaches(false);

connection.setInstanceFollowRedirects(true);

connection.setRequestProperty("Content-Type","application/x-www-form-urlencoded;charset="+charset+"");

// 增加报头，模拟浏览器，防止屏蔽

connection.setRequestProperty("User-Agent",

"Mozilla/4.0 (compatible; MSIE 8.0; Windows vista)");

// 只接受text/html类型，当然也可以接受图片,pdf,*/*任意

connection.setRequestProperty("Accept", "*/*");// text/html

connection.setConnectTimeout(timeout);

connection.connect();

DataOutputStream out = new DataOutputStream(connection

.getOutputStream());

byte[] content = data.getBytes(charset);// +URLEncoder.encode("中文 ",

out.write(content);

out.flush();

out.close();

try {

// 必须写在发送数据的后面

if (connection.getResponseCode() != HttpURLConnection.HTTP_OK) {

return null;

}

} catch (IOException e) {

e.printStackTrace();

return null;

}

BufferedReader reader = new BufferedReader(new InputStreamReader(

connection.getInputStream(), charset));

String line;

StringBuffer sb = new StringBuffer();

while ((line = reader.readLine()) != null) {

sb.append(line).append("\r\n");

}

if (reader != null) {

reader.close();

}

if (connection != null) {

connection.disconnect();

}

System.out.println(sb.toString());

return URLDecoder.decode(sb.toString(), "utf-8");

}

public static String getUndecodeByPost(String urlString, String data,

final String charset, int timeout) throws IOException {

if (urlString == null || urlString.length() == 0) {

return null;

}

urlString = (urlString.startsWith("http://") || urlString.startsWith("https://")) ? urlString : ("http://" + urlString).intern();

URL url = new URL(urlString);

System.out.println("url=="+url);

HttpURLConnection connection = (HttpURLConnection) url.openConnection();

// 设置是否向connection输出，因为这个是post请求，参数要放在 http正文内，因此需要设为true

connection.setDoOutput(true);

connection.setDoInput(true);

connection.setRequestMethod("POST");

// Post 请求不能使用缓存

connection.setUseCaches(false);

connection.setInstanceFollowRedirects(true);

connection.setRequestProperty("Content-Type","application/x-www-form-urlencoded;charset="+charset+"");

// 增加报头，模拟浏览器，防止屏蔽

connection.setRequestProperty("User-Agent",

"Mozilla/4.0 (compatible; MSIE 8.0; Windows vista)");

// 只接受text/html类型，当然也可以接受图片,pdf,*/*任意

connection.setRequestProperty("Accept", "*/*");// text/html

connection.setRequestProperty("Content-Length", "*/*");// text/html

connection.setConnectTimeout(timeout);

connection.connect();

DataOutputStream out = new DataOutputStream(connection

.getOutputStream());

byte[] content = data.getBytes(charset);// +URLEncoder.encode("中文 ",

out.write(content);

out.flush();

out.close();

try {

// 必须写在发送数据的后面

if (connection.getResponseCode() != HttpURLConnection.HTTP_OK) {

return null;

}

} catch (IOException e) {

e.printStackTrace();

return null;

}

BufferedReader reader = new BufferedReader(new InputStreamReader(

connection.getInputStream(), charset));

String line;

StringBuffer sb = new StringBuffer();

while ((line = reader.readLine()) != null) {

sb.append(line).append("\r\n");

}

if (reader != null) {

reader.close();

}

if (connection != null) {

connection.disconnect();

}

return sb.toString();

}