google登录 java获取用户信息

google api

/**
 * 
 */
package com.xx.sns.business.impl.login;

import java.net.InetSocketAddress;
import java.net.Proxy;
import java.net.Proxy.Type;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.apache.commons.lang3.builder.ReflectionToStringBuilder;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Scope;
import org.springframework.http.HttpEntity;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpMethod;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.http.client.SimpleClientHttpRequestFactory;
import org.springframework.stereotype.Component;
import org.springframework.util.LinkedMultiValueMap;
import org.springframework.util.MultiValueMap;
import org.springframework.web.client.RestTemplate;

import com.alibaba.fastjson.JSONObject;




public class GoogleLoginBiz 
{
	private static final Logger logger = LoggerFactory.getLogger(GoogleLoginBiz.class);
	
	
	//浏览器请求获取code   https://accounts.google.com/o/oauth2/v2/auth?response_type=code&client_id={CLIENT_ID}&redirect_uri={BACK_URL}&scope=profile&state=1&access_type=offline
	private static final String USERINFO_URL =  "https://www.googleapis.com/plus/v1/people/me";
	
	private static final String TOKEN_URL = "https://www.googleapis.com/oauth2/v4/token";
	
	private static final String BACK_URL = "http://xxxxxxx.xxx.com/oauth2callback";
	
	
	
	private static final String CLIENT_ID="xxxxxxxx.apps.googleusercontent.com";
	private static final String CLIENT_SECRET="xxxxxxxxxx";
	
	
	public UserInfoPo login(String code)  {
		
		//获取token
		Map tokenHeadMap = new HashMap();
		tokenHeadMap.put("Content-Type", "application/x-www-form-urlencoded");
		MultiValueMap bodyMap = new LinkedMultiValueMap();
		bodyMap.add("code", code);
		bodyMap.add("client_id", CLIENT_ID);
		bodyMap.add("client_secret", CLIENT_SECRET);
		bodyMap.add("redirect_uri", BACK_URL);
		bodyMap.add("grant_type", "authorization_code");
		
		MultiValueMap header = new LinkedMultiValueMap<>();
		header.add("Content-Type", "application/x-www-form-urlencoded");
        HttpEntity> request = new HttpEntity<>(bodyMap, header);
        RestTemplate restTemplate = new RestTemplate();
        Map params = new HashMap<>();
        ResponseEntity