Java获取http和https协议返回的json数据

现在很多公司都是将数据返回一个json，而且很多第三方接口都是返回json数据，而且还需要使用到http协议，http协议是属于为加密的协议，而https协议需要SSL证书，https是将用户返回的信息加密处理，然而我们要获取这些数据，就需要引入SSL证书。现在我提供两个方法，帮助各位如何获取http和https返回的数据。

获取http协议的数据的方法，如下：

public static JSONObject httpRequest(String requestUrl, String requestMethod) {

JSONObject jsonObject = null;

StringBuffer buffer = new StringBuffer();

try {

URL url = new URL(requestUrl);

// http协议传输

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

httpUrlConn.setDoOutput(true);

httpUrlConn.setDoInput(true);

httpUrlConn.setUseCaches(false);

// 设置请求方式（GET/POST）

httpUrlConn.setRequestMethod(requestMethod);

if ("GET".equalsIgnoreCase(requestMethod))

httpUrlConn.connect();

// 将返回的输入流转换成字符串

InputStream inputStream = httpUrlConn.getInputStream();

InputStreamReader inputStreamReader = new InputStreamReader(inputStream, "utf-8");

BufferedReader bufferedReader = new BufferedReader(inputStreamReader);

String str = null;

while ((str = bufferedReader.readLine()) != null) {

buffer.append(str);

}

bufferedReader.close();

inputStreamReader.close();

// 释放资源

inputStream.close();

inputStream = null;

httpUrlConn.disconnect();

jsonObject = JSONObject.fromObject(buffer.toString());

} catch (Exception e) {

e.printStackTrace();

}

return jsonObject;

}

获取https协议的数据的方法，如下：

public static JSONObject httpsRequest(String requestUrl, String requestMethod, String outputStr) {

JSONObject jsonObject = null;

StringBuffer buffer = new StringBuffer();

try {

// 创建SSLContext对象，并使用我们指定的信任管理器初始化

TrustManager[] tm = { new MyX509TrustManager() };

SSLContext sslContext = SSLContext.getInstance("SSL", "SunJSSE");

sslContext.init(null, tm, new java.security.SecureRandom());

// 从上述SSLContext对象中得到SSLSocketFactory对象

SSLSocketFactory ssf = sslContext.getSocketFactory();

URL url = new URL(requestUrl);

HttpsURLConnection httpUrlConn = (HttpsURLConnection) url.openConnection();

httpUrlConn.setSSLSocketFactory(ssf);

httpUrlConn.setDoOutput(true);

httpUrlConn.setDoInput(true);

httpUrlConn.setUseCaches(false);

// 设置请求方式（GET/POST）

httpUrlConn.setRequestMethod(requestMethod);

if ("GET".equalsIgnoreCase(requestMethod))

httpUrlConn.connect();

// 当有数据需要提交时

if (null != outputStr) {

OutputStream outputStream = httpUrlConn.getOutputStream();

// 注意编码格式，防止中文乱码

outputStream.write(outputStr.getBytes("UTF-8"));

outputStream.close();

}

// 将返回的输入流转换成字符串

InputStream inputStream = httpUrlConn.getInputStream();

InputStreamReader inputStreamReader = new InputStreamReader(inputStream, "utf-8");

BufferedReader bufferedReader = new BufferedReader(inputStreamReader);

String str = null;

while ((str = bufferedReader.readLine()) != null) {

buffer.append(str);

}

bufferedReader.close();

inputStreamReader.close();

// 释放资源

inputStream.close();

inputStream = null;

httpUrlConn.disconnect();

jsonObject = JSONObject.fromObject(buffer.toString());

} catch (ConnectException ce) {

log.error("Weixin server connection timed out.");

} catch (Exception e) {

log.error("https request error:{}", e);

}

return jsonObject;

}

获取https协议的数据和获取http协议的区别在于

// 创建SSLContext对象，并使用我们指定的信任管理器初始化

TrustManager[] tm = { new MyX509TrustManager() };

SSLContext sslContext = SSLContext.getInstance("SSL", "SunJSSE");

sslContext.init(null, tm, new java.security.SecureRandom());

// 从上述SSLContext对象中得到SSLSocketFactory对象

SSLSocketFactory ssf = sslContext.getSocketFactory();

URL url = new URL(requestUrl);

HttpsURLConnection httpUrlConn = (HttpsURLConnection) url.openConnection();

httpUrlConn.setSSLSocketFactory(ssf);

大家有更好的方法欢迎留言分享，以上就是本次共享的内容 。还有，提示一下，如果复制中，缺失jar包，请自行下载，如果找不到，请给我留言，还有，程序是死的，人是活的，怎么方便怎么来