微信登录查询code，为了获取openid

最新推荐文章于 2024-04-17 17:18:50 发布

原创最新推荐文章于 2024-04-17 17:18:50 发布 · 890 阅读

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#java #微信

本文介绍了一种使用微信网页授权流程的方法，包括设置跳转页面、获取code、利用code获取access_token及用户信息等步骤。

              1.  String returnUrl="";
		mav.addObject("returnUrl", returnUrl);
		mav.addObject("appid","appid");
		mav.addObject("scope", "snsapi_userinfo");
		mav.addObject("state", "no");
		mav.setViewName("");

 跳转的页面：<script type="text/javascript">
			  var returnUrl="http://***/${returnUrl}";
			  var appid="${appid}";
			  var scope="${scope}";
			  var state="${state}";
			location.href="https:\/\/open.weixin.qq.com\/connect/oauth2\/authorize?appid="+appid+"&redirect_uri="+encodeURIComponent(returnUrl)+"&response_type=code&scope="+scope+"&state="+state+"#wechat_redirect";
			  </script>

2.接收code：String code=request.getParameter("code");

WxUser wxUserInfo=weixinMemberService.getWxUserInfo(code);

String openid=wxUserInfo.getOpenid();

----------------------------------------------------------------------------------------------------------------------------------

weixinMemberService.getWxUserInfo(code)接口实现：WebAccessToken accessToken=WeChatUtil.getWebAccessToken(wxUserService.getWxAppId(), wxUserService.getAppsecret(), code);
		WxUser wxUserInfo=WeChatUtil.getWxUserInfo(accessToken.getToken(), accessToken.getOpenid());

getWebAccessToken方法实现
//获取 网页授权access_token的接口地址(GET)
	public final static String web_access_token_url="https://api.weixin.qq.com/sns/oauth2/access_token?appid=APPID&secret=SECRET&code=CODE&grant_type=authorization_code";
	
	/**
	 * 
	 * @Title: getWebAccessToken
	 * @Description: 获取网页授权access_token
	 * @author Administrator
	 * @date 2015-7-12 上午09:47:47
	 * @param appid  应用id
	 * @param secret 
	 * @param code
	 * @return
	 */
	public static WebAccessToken getWebAccessToken(String appid,String secret,String code){
		WebAccessToken accessToken=null;
		String requestUrl=web_access_token_url.replace("APPID", appid).replace("SECRET", secret).replace("CODE", code);
		JSONObject jsonObject=httpRequest(requestUrl, "GET", null);
		// 如果请求成功
		if (null != jsonObject) {
			try {
				accessToken = new WebAccessToken();
				accessToken.setToken(jsonObject.getString("access_token"));
				accessToken.setExpiresIn(jsonObject.getInt("expires_in"));
				accessToken.setRefreshToken(jsonObject.getString("refresh_token"));
				accessToken.setOpenid(jsonObject.getString("openid"));
				accessToken.setScope(jsonObject.getString("scope"));
				//accessToken.setUnionid(jsonObject.getString("unionid"));
				
			} catch (Exception e) {
				accessToken = null;
				// 获取token失败
				System.out.println("获取TOKEN失败("+jsonObject.getInt("errcode")+")："+WeChatErrorCode.ERRORCODE.get(jsonObject.getInt("errcode")));
			}
		}
		return accessToken;
	}

getWxUserInfo方法的实现
//获取微信用户基本信息的接口地址（GET）
	public final static String get_user_info_url="https://api.weixin.qq.com/sns/userinfo?access_token=ACCESS_TOKEN&openid=OPENID&lang=zh_CN";
	
	/**
	 * 
	 * @Title: getWxUserInfo
	 * @Description:获取微信用户基本信息
	 * @author Administrator
	 * @date 2015-7-12 上午10:54:12
	 * @param accessToken
	 * @param opendid
	 * @return
	 */
	@SuppressWarnings("unchecked")
	public static WxUser getWxUserInfo(String accessToken,String opendid){
		WxUser wxUserInfo=null;
		String requestUrl=get_user_info_url.replace("ACCESS_TOKEN", accessToken).replace("OPENID",opendid);
		JSONObject jsonObject=httpRequest(requestUrl, "GET", null);
		if (null != jsonObject) {
			try {
				wxUserInfo = new WxUser();
				wxUserInfo.setCity(jsonObject.getString("city"));
				wxUserInfo.setOpenid(jsonObject.getString("openid"));
				wxUserInfo.setNickname(jsonObject.getString("nickname"));
				wxUserInfo.setSex(jsonObject.getInt("sex"));
				wxUserInfo.setProvince(jsonObject.getString("province"));
				wxUserInfo.setCountry(jsonObject.getString("country"));
				wxUserInfo.setHeadimgurl(jsonObject.getString("headimgurl"));
				wxUserInfo.setPrivilege(jsonObject.getJSONArray("privilege"));
			} catch (Exception e) {
				accessToken = null;
				// 获取token失败
				System.out.println("获取用户基本信息失败("+jsonObject.getInt("errcode")+")："+WeChatErrorCode.ERRORCODE.get(jsonObject.getInt("errcode")));
			}
		}
		return wxUserInfo;
		
	}