微信第三方登录——JAVA后台

         小编在此说一声，建议去看一下微信官方提供的流程图，以及其他的之后再看下面的。小编在此就不提供账号申请，那些准备工作了，直接上代码。

        微信官方示例→点击打开链接

        微信登录流程：

    第一步：APP或者网页端，通过账号密码获取到微信返回的一个code码。code码，有效期为10分钟，10分钟不使用则自动失效，有效次数为一次，每一次的code码都是不同的。[前端或者移动端的操作]

    第二步：将code码传给后台登录的接口（红色部分为需要代码）

	public String appLogin(){
		//从header头部里面取出设备类型，设备编号，以及登录方式
		String loginMode =	request.getHeader("channel");
		String modeType =	request.getHeader("app-idfa");
		String modeCode =	request.getHeader("device");
		Map headerMap = new HashMap();
		headerMap.put("loginMode", loginMode);
		headerMap.put("modeType", modeType);
		headerMap.put("modeCode", modeCode);
		//加载配置文件
	    Map maps = LoadingAuthUtil.loading();
	    String secret = (String) maps.get("secret");
	    //获取传过来的code
	    String o = request.getParameter("object");
	    Map oMap = (Map) JSON.parse(o);
	    String code = (String) oMap.get("code");

	    //调取微信的认证授权后的token
	    Map map=new HashMap();
	    Map returnMap =  jwtLoginService.getAccessToken(code,headerMap);	 
	  
	    if(StringUtils.isEmpty(returnMap.get("accessToken")+"")||StringUtils.isEmpty(returnMap.get("isFirstLogin")+"")){
	    	  return  returnJson(map, "0", "");
	    }
	    String accessToken = (String) returnMap.get("accessToken");
	    String isFirstLogin = (String) returnMap.get("isFirstLogin");
	    
	    //将openid取出来
	    String openid = JwtTokenUtil.getOpenidStringFromToken(accessToken, secret);
	    //根据open_id，然后调取数据库获取信息
	    User user = userService.getInfoByOpenId(openid);
	    //将加密字符串与用户信息一起传给APP端    
	    //放进map，转成JSON	
	   
	    map.put("authorization", accessToken);
	    map.put("userCode", user.getUser_code());
	    map.put("nickName",user.getNick_name());
	    map.put("gender", user.getGender());
	    map.put("userIcon", user.getUser_image());
	    map.put("user_nationality", user.getUser_nationality());
	    map.put("province", user.getProvince());
	    map.put("city", user.getCity());;
	    map.put("isFirstLogin",isFirstLogin);
	    map.put("invitateCode", user.getInvitate_code());
	    map.put("shareIcon", user.getShareIcon());
	    map.put("invitatedCode", user.getInvitated_code());
	    map.put("tel", user.getUser_tel());
	    return  returnJson(map, "0", "");
	} //获取传过来的code
	    String o = request.getParameter("object");
	    Map oMap = (Map) JSON.parse(o);
	    String code = (String) oMap.get("code");

	    //调取微信的认证授权后的token
	    Map map=new HashMap();
	    Map returnMap =  jwtLoginService.getAccessToken(code,headerMap);	 
	  
	    if(StringUtils.isEmpty(returnMap.get("accessToken")+"")||StringUtils.isEmpty(returnMap.get("isFirstLogin")+"")){
	    	  return  returnJson(map, "0", "");
	    }
	    String accessToken = (String) returnMap.get("accessToken");
	    String isFirstLogin = (String) returnMap.get("isFirstLogin");
	    
	    //将openid取出来
	    String openid = JwtTokenUtil.getOpenidStringFromToken(accessToken, secret);
	    //根据open_id，然后调取数据库获取信息
	    User user = userService.getInfoByOpenId(openid);
	    //将加密字符串与用户信息一起传给APP端    
	    //放进map，转成JSON	
	   
	    map.put("authorization", accessToken);
	    map.put("userCode", user.getUser_code());
	    map.put("nickName",user.getNick_name());
	    map.put("gender", user.getGender());
	    map.put("userIcon", user.getUser_image());
	    map.put("user_nationality", user.getUser_nationality());
	    map.put("province", user.getProvince());
	    map.put("city", user.getCity());;
	    map.put("isFirstLogin",isFirstLogin);
	    map.put("invitateCode", user.getInvitate_code());
	    map.put("shareIcon", user.getShareIcon());
	    map.put("invitatedCode", user.getInvitated_code());
	    map.put("tel", user.getUser_tel());
	    return  returnJson(map, "0", "");
	}

     第三步：通过code调取微信的服务器获取access_token

/**
	 * description: 根据认证码调取微信平台获取信息
	 * @param code 认证码
	 * @return 返回json数据
	 */
	public Map getAccessToken(String code,Map m) {
		logger.info("code："+code);
		Map returnMap =new HashMap();
		//----------------------- 加载配置文件 ----------------------
		Map maps =LoadingAuthUtil.loading();
		String tokenUrl =  (String) maps.get("tokenUrl");
		String appid =  (String) maps.get("appid");
		String secret =  (String) maps.get("secret");
		
		
		//--------------------------调用微信后台服务器----------------------------
        String url= tokenUrl+"appid="+appid+"&secret="+secret+"&code="+code+"&grant_type=authorization_code";
                URI uri = URI.create(url);
                HttpClient client = new DefaultHttpClient();
                HttpGet get = new HttpGet(uri);
                HttpResponse response;
        try {
            response = client.execute(get);
            if (response.getStatusLine().getStatusCode() == 200) {
                HttpEntity entity = response.getEntity();
                BufferedReader reader = new BufferedReader(new InputStreamReader(entity.getContent(), "UTF-8"));
                StringBuilder sb = new StringBuilder();

                for (String temp = reader.readLine(); temp != null; temp = reader.readLine()) {
                    sb.append(temp);
                } 
                if(sb.toString().contains("errcode")){
                	logger.info(""+sb.toString());
                	 returnMap.put("isFirstLogin", null);
         	         returnMap.put("accessToken", null);
                }else{
               	    JSONObject object = new JSONObject().fromObject(sb.toString().trim());    
                    logger.info("wechat info："+object);
                   //获取所需要的信息
                    String  accessToken = object.getString("access_token");
                    String  openID = object.getString("openid");
                    String  refreshToken = object.getString("refresh_token");
                      long expires_in = object.getLong("expires_in");   //获取腾讯过期时间
                    //token过期时间
                    Date expires_time=new Date(System.currentTimeMillis()+expires_in*1000);              
                    String  unionid = object.getString("unionid");
                    String   scope = object.getString("scope");
                    //根据open_id(执行数据的新增和修改)
                    String  isFirstLogin =  getUserInfo(accessToken,openID);
         	    JwtToken  jwtToken = new JwtToken(openID,unionid, expires_time, accessToken, refreshToken, scope); 
                 
      	          //根据open_id，然后调取数据库获取信息
            	    User user = userService.getInfoByOpenId(openID);
            	  //将用户id取出来
      	    	    Long userId = user.getId();
      	    	  //将用户id设置进JwtToken对象里面
      	    	    jwtToken.setUserid(userId+"");
            	      //将token加密
            	        String authorization = JwtTokenUtil.generateAccessToken(jwtToken); 
            	  //将token存在redis里面
            	     redisUtil.set(RedisPropertyUtil.RedisLoginTokenKey+userId, authorization);  
            	        //添加登录流水
                      String login_mode = (String) m.get("loginMode");
                      String mode_type = (String) m.get("modeType");
                      String mode_code = (String) m.get("modeCode");
                         Login lt = new Login();
                         lt.setUser_id(userId+"");
                         lt.setAuthorization(authorization);
                         lt.setLogin_mode(login_mode);
                         lt.setAccess_token(accessToken);
                         lt.setRefresh_token(refreshToken);
                         lt.setMode_type(mode_type);
                         lt.setMode_code(mode_code);
                         loginService.insert(lt);
            	        returnMap.put("isFirstLogin", isFirstLogin);
            	        returnMap.put("accessToken", authorization);
                }
      	        return returnMap;
            }
        } catch (ClientProtocolException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } catch (IllegalStateException e) {
            e.printStackTrace();
        } catch (JSONException e) {
            e.printStackTrace();
        }
        return null;
	}
	

   第四步：根据access_token获取用户信息

/**
	 *  @description: 根据accessToken和open_id 获取用户信息，执行数据库判断
	 */
	private String getUserInfo(String accessToken,String openID){
		//----------------------- 加载配置文件 ----------------------
		    Map maps =LoadingAuthUtil.loading();
		    String userInfoUrl = (String) maps.get("userInfoUrl");
	            String uri = userInfoUrl+"access_token=" + accessToken + "&openid=" + openID;
	            HttpClient client = new DefaultHttpClient();
	            HttpGet get = new HttpGet(URI.create(uri));
	            String isFirstLogin = "0"; //默认不是第一次登录
	            try {
	                HttpResponse response = client.execute(get);
	                if (response.getStatusLine().getStatusCode() == 200) {
	                    BufferedReader reader = new BufferedReader(new InputStreamReader(response.getEntity().getContent(), "UTF-8"));
	                    StringBuilder builder = new StringBuilder();
	                    for (String temp = reader.readLine(); temp != null; temp = reader.readLine()) {
	                        builder.append(temp);
	                    }
	                    JSONObject object = new JSONObject().fromObject(builder.toString().trim());                       	                  	                    
	                    //获取微信返回的用户基本信息
	                    String nickName =object.getString("nickname");
	                    String sex=object.getString("sex");
	                    String province=object.getString("province");
	                    String city=object.getString("city");
	                    String country=object.getString("country");
	                    String headimgurl=object.getString("headimgurl");
	                    String unionid=object.getString("unionid");	  
	                    logger.info("wechat info:   "+nickName+"---"+sex+"---"+province+"---"+city+"---"+country+"---"+headimgurl+"---"+unionid+"---");
	                    //实例化一个用户
	                    User user=new User();             
	                    user.setNick_name(nickName);
	                    user.setOpenid(openID);
	                    user.setUnionid(unionid);
	                    user.setUser_icon(headimgurl);
	                    user.setGender(sex);
	                    user.setUser_nationality(country);
	                    user.setProvince(province);
	                    user.setCity(city);
	                    //判断是否是第一次登录
	                    int count = userService.judgeUserByOpenId(openID);
	                    logger.info("count:"+count);
	                 if (count == 0) {//查询数据库是否有open_id
	                    logger.info("first login");
	                    //第一次登录，则生成一个唯一的邀请码
	                    String invitateCode = InvitateCodeUtil.createCode();   	
	                    int v =  userService.judgeCodeByCode(invitateCode);
	                    boolean flag= true;
		                    while(flag){
		                    	if(v>0){//说明数据库中已经存在此邀请码，则需要重新生成再继续判断
		                    		invitateCode = InvitateCodeUtil.createCode();
		                    	 v =  userService.judgeCodeByCode(invitateCode);
			                     }else{
			                    	 flag = false;
			                     }
		                    } 
		                //首次登录,根据邀请码自动生成一张图片
		                if(invitateCode != null){
		                //加载配置文件	
		                Map shareMap =	LoadingShareUtil.loading();
		                  String backgroundUrl = (String) shareMap.get("backgroundUrl");
		               	  String aboveUrl = (String) shareMap.get("aboveUrl");
		               	  String compoundUrl = (String) shareMap.get("compoundUrl");
		               	  String compoundName = (String) shareMap.get("compoundName");
		               	  String text = invitateCode;
		               	  String finalUrl = (String) shareMap.get("finalUrl");
		               	  String finalName = "share_"+invitateCode+"_"+new SimpleDateFormat("yyyyMMddHHmmss").format(new Date())+".png";
		               	  String str[]={ "386", "984" };
		               	  ImageUtil.crearePicture(backgroundUrl, aboveUrl, compoundUrl, compoundName, text, finalUrl, finalName,str);	
		                  String cosIconPath  =  TxFileUpload.upload(finalUrl+finalName, finalName, "share");
                          user.setShareIcon(cosIconPath); //设置地址
		                }
		                //设置用户类型（默认是普通会员）
		                   user.setUser_type("4"); 		                    
	                    //设置邀请码
	                      user.setInvitate_code(invitateCode);
	                    //如果是第一次登录则添加进数据库
	                    	userService.insert(user);
	                    	//根据openid 找到刚刚添加的user
	                        User t = userService.getInfoByOpenId(openID);
	                        //生成userCode 
	                        String userCode = UserCodeUtil.createUserCode(t.getId()+"");
	                    	//修改userCode编码
	                        t.setUser_code(userCode);
	                      	//修改信息                   
	                        userService.update(t);
	                    	//首次登陆要送奖励
	                    String coin = sysConfigService.getValue("SYSTEM", "REWARD", "LOGIN_FRIST");
		                Map rewardMap = RewardSplitUtil.SplitReward(coin);
	                      String rewardCoin =  (String) rewardMap.get("rewardCoin");
	                      String exerciseCoin =  (String) rewardMap.get("exerciseCoin");
			              try {
			                        //执行添加游戏币的服务
					         Map accountMap =new HashMap();
					         accountMap.put("userId", t.getId());
					          //默认充值账户
					         accountMap.put("accountType", 1);
					         accountMap.put("balance", rewardCoin);
					         userAccountService.addBalance(accountMap);      
				             //执行添加练习账户的服务 
				             Map accountMap1 =new HashMap();
				             accountMap1.put("userId", t.getId());
					          //默认充值账户
					         accountMap1.put("accountType", 2);
					         accountMap1.put("balance", exerciseCoin);
					         userAccountService.addBalance(accountMap1);  
							} catch (Exception e) {
								e.printStackTrace();
							}
			              isFirstLogin="1";
	                 }else{//如果不是第一次登录,则执行修改的操作,更新数据库
	                    	//根据openId获取userId
	                    	 User t = userService.getInfoByOpenId(openID);
                             user.setId(t.getId());
                             logger.info(t.getId()+"no first login");
	                    	 userService.update(user);
	                    }
	                }
	            } catch (ClientProtocolException e) {
	             
	                e.printStackTrace();
	            } catch (IOException e) {
	               
	                e.printStackTrace();
	            } catch (JSONException e) {
	               
	                e.printStackTrace();
	            }	
	            return isFirstLogin;
	        }	

  小编在此就不细细说明了，有什么问题注释应该都写了，还有要问题的，可以联系QQ985548426.小编长期在线。

 源码下载地址：https://download.csdn.net/download/a985548426/10752679