JAVA POST请求（https）

本文主要摘自网络资源，感谢各位大神的无私的奉献！！！！

最近开发微信公众号，发现微信的各种请求全是POST（HTTPS），在网上找了相关内容，如下：

1、建立一个证书类：
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;

import javax.net.ssl.X509TrustManager;

/**
* 证书信任管理器（用于https请求）
*/
public class MyX509TrustManager implements X509TrustManager {

public void checkClientTrusted(X509Certificate[] chain, String authType) throws CertificateException {
}

public void checkServerTrusted(X509Certificate[] chain, String authType) throws CertificateException {
}

public X509Certificate[] getAcceptedIssuers() {
return null;
}
}

2.建立一个POST传输类

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.ConnectException;
import java.net.URL;

import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSocketFactory;
import javax.net.ssl.TrustManager;

/**
* 公众平台通用接口工具类
*
*/
public class WeixinUtil {

/**
* 发起https请求并获取结果
*
* @param requestUrl
* 请求地址
* @param requestMethod
* 请求方式（GET、POST）
* @param outputStr
* 提交的数据
* @return String
*/
public static String httpRequest(String requestUrl, String requestMethod, String outputStr) {
String result = 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();
result = buffer.toString();
// jsonObject = JSONObject.fromObject(buffer.toString());
} catch (ConnectException ce) {
ce.printStackTrace();
// log.error("Weixin server connection timed out.");
} catch (Exception e) {
e.printStackTrace();
// log.error("https request error:{}", e);
}
return result;
}

public static void main(String[] args) {
String requestUrl = " https://api.weixin.qq.com/cgi-bin/menu/create?" + "access_token=ACCESS_TOKEN";
String requestMethod = "POST";
String outputStr = " {\"button\":[{\"type\":\"click\",\"name\":\"今日歌曲111\",\"key\":\"V1001_TODAY_MUSIC\"},"
+ "{\"name\":\"菜单\",\"sub_button\":[{\"type\":\"view\",\"name\":\"搜索\",\"url\":\"http://www.soso.com/\"},"
+ "{\"type\":\"view\",\"name\":\"视频\",\"url\":\"http://v.qq.com/\"},"
+ "{\"type\":\"click\",\"name\":\"赞一下我们\",\"key\":\"V1001_GOOD\"}]}]}";

String result = WeixinUtil.httpRequest(requestUrl, requestMethod, outputStr);
System.out.println("result:"+result);
}

}