java支持Https协议的一种方案

原理是认为所有的网站都是可信的。

使用的包情况：

                <!-- http client -->
		<dependency>
			<groupId>commons-httpclient</groupId>
			<artifactId>commons-httpclient</artifactId>
			<version>3.1</version>
		</dependency>
		<dependency>
			<groupId>org.apache.httpcomponents</groupId>
			<artifactId>httpcore</artifactId>
			<version>4.3.3</version>
		</dependency>
		<dependency>
			<groupId>org.apache.commons</groupId>
			<artifactId>commons-io</artifactId>
			<version>1.3.2</version>
		</dependency>
		<dependency>
			<groupId>org.apache.httpcomponents</groupId>
			<artifactId>httpclient</artifactId>
			<version>4.3.6</version>
		</dependency>

 实例代码：

package com.my.uitls;

import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;

import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;

import org.apache.http.HttpEntity;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.util.EntityUtils;
import org.json.JSONObject;

public class NewSSLClient {
	public static void main(String[] args) throws Exception {
		//初始化
		String url="https://39.156.1.100";
		JSONObject json = new JSONObject();
		json.put("username", "guest");
		json.put("password", "123");
    	String params=json.toString();
    	String responseContent = null;
    	//实现部分
		HttpClientBuilder builder = HttpClientBuilder.create();
		SSLContext ctx = SSLContext.getInstance("TLS");
	//核心部分	
        X509TrustManager tm = new X509TrustManager() {
                public void checkClientTrusted(X509Certificate[] chain,
                        String authType) throws CertificateException {
                }
                public void checkServerTrusted(X509Certificate[] chain,
                        String authType) throws CertificateException {
                }
                public X509Certificate[] getAcceptedIssuers() {
                    return null;
                }
        };
        ctx.init(null, new TrustManager[]{tm}, null);
		builder.setSslcontext(ctx);
		SSLConnectionSocketFactory factory = new SSLConnectionSocketFactory(ctx,SSLConnectionSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER);
		builder.setSSLSocketFactory(factory);
		
		CloseableHttpClient client = builder.build();
		
		HttpPost httpPost = new HttpPost(url);
		httpPost.setHeader("Content-Type", "application/json;charset=UTF-8");
		StringEntity se = new StringEntity(params);
		se.setContentType("text/json");
		RequestConfig requestConfig = RequestConfig.custom()//
				.setSocketTimeout(1000)//
				.setConnectTimeout(1000)//
				.build();// 设置请求和传输超时时间
		httpPost.setEntity(se);
		httpPost.setConfig(requestConfig);
		
		CloseableHttpResponse response = client.execute(httpPost);
		HttpEntity entity = response.getEntity();
		if(response.getStatusLine().getStatusCode()==200) {
			//请求成功
			responseContent = EntityUtils.toString(entity, "UTF-8");
		}else{
			responseContent = null;
		}
		System.out.println(responseContent);
	}
}