getUtils.java

package com.webank.utils;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.URL;

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

public class getUtils {

	public static StringBuffer get(String url) throws Exception{
		 URL url2 = new URL(url);
	        System.out.println(url);
	        HttpsURLConnection httpUrlConn = (HttpsURLConnection) url2.openConnection();

	        // 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();

	        httpUrlConn.setSSLSocketFactory(ssf);
	        httpUrlConn.setDoOutput(true);
	        httpUrlConn.setDoInput(true);

	        // 设置请求方式（GET/POST）
	        httpUrlConn.setRequestMethod("GET");

	        // 取得输入流
	        InputStream inputStream = httpUrlConn.getInputStream();
	        InputStreamReader inputStreamReader = new InputStreamReader(inputStream, "utf-8");
	        BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
	        //读取响应内容
	        StringBuffer buffer = new StringBuffer();
	        String str = null;
	        while ((str = bufferedReader.readLine()) != null) {
	            buffer.append(str);
	        }
	        bufferedReader.close();
	        inputStreamReader.close();
	        // 释放资源
	        inputStream.close();
	        httpUrlConn.disconnect();
	        //输出返回结果
	        System.out.println(buffer);
		return buffer;
	}
}