12.18 微信扫码获取openid与登陆
官方文档: https://open.weixin.qq.com/
1.先获取code
1-1 配置项目配置文件
wechat: mpAppId: wxd898fcb01713c658 mpAppSecret: 47ccc303338cee6e62894fxxxxxxxxxxx openAppId: wx6ad144e54af67d87///////// openAppSecret: 91a2ff6d38a2bbccfb7e9f9079108e2e/////////配置密钥
1-2 配置相应的配置文件
Data
@Component
@ConfigurationProperties(prefix = "wechat")
public class WechatAccountConfig {
/**
* 公众平台id
*/
private String mpAppId;
/**
* 公众平台密钥
*/
private String mpAppSecret;
/**
* 开放平台id
*/
private String openAppId;
/**
* 开放平台密钥
*/
private String openAppSecret;
/**
* 商户号
*/
private String mchId;
/**
* 商户密钥
*/
private String mchKey;
/**
* 商户证书路径
*/
private String keyPath;
/**
* 微信支付异步通知地址
*/
private String notifyUrl;
/**
* 微信模版id
*/
private Map<String, String> templateId;
}
1-3开放平台文件配置
@Component
public class WechatOpenConfig {
@Autowired
private WechatAccountConfig accountConfig;
@Bean
public WxMpService wxOpenService() {
WxMpService wxOpenService = new WxMpServiceImpl();
wxOpenService.setWxMpConfigStorage(wxOpenConfigStorage());
return wxOpenService;
}
@Bean
public WxMpConfigStorage wxOpenConfigStorage() {
WxMpInMemoryConfigStorage wxMpInMemoryConfigStorage = new WxMpInMemoryConfigStorage();
wxMpInMemoryConfigStorage.setAppId(accountConfig.getOpenAppId());
wxMpInMemoryConfigStorage.setSecret(accountConfig.getOpenAppSecret());
return wxMpInMemoryConfigStorage;
}
}
1-4 controller,并配置同意的Url配置文件
url配置文件
@Data
@ConfigurationProperties(prefix = "projectUrl")
@Component
public class ProjectUrlConfig {
/**
* 微信公众平台授权url
*/
public String wechatMpAuthorize;
/**
* 微信开放平台授权url
*/
public String wechatOpenAuthorize;
/**
* 点餐系统
*/
public String sell;
}
项目配置文件
projectUrl: wechatMpAuthorize: http://sell.natapp4.cc wechatOpenAuthorize: http://sell.natapp4.cc sell: http://sell.natapp4.cc
@Controller
@RequestMapping("/wechat")
@Slf4j
public class WechatController {
@Autowired
private WxMpService wxMpService;
@Autowired
private WxMpService wxOpenService;
@Autowired
private ProjectUrlConfig projectUrlConfig;
@GetMapping("/qrAuthorize")
public String qrAuthorize(@RequestParam("returnUrl") String returnUrl) {
String url = projectUrlConfig.getWechatOpenAuthorize() + "/sell/wechat/qrUserInfo";
String redirectUrl = wxOpenService.buildQrConnectUrl(url, WxConsts.QRCONNECT_SCOPE_SNSAPI_LOGIN, URLEncoder.encode(returnUrl));
return "redirect:" + redirectUrl;
}
@GetMapping("/qrUserInfo")
public String qrUserInfo(@RequestParam("code") String code,
@RequestParam("state") String returnUrl) {
WxMpOAuth2AccessToken wxMpOAuth2AccessToken = new WxMpOAuth2AccessToken();
try {
wxMpOAuth2AccessToken = wxOpenService.oauth2getAccessToken(code);
} catch (WxErrorException e) {
log.error("【微信网页授权】{}", e);
throw new SellException(ResultEnum.WECHAT_MP_ERROR.getCode(), e.getError().getErrorMsg());
}
log.info("wxMpOAuth2AccessToken={}", wxMpOAuth2AccessToken);
String openId = wxMpOAuth2AccessToken.getOpenId();
return "redirect:" + returnUrl + "?openid=" + openId;
}
}
2.登陆
2-1controller创建登陆方法
步骤://1. openid去和数据库里的数据匹配
2. 设置token至redis:[
使用redis步骤:
1.引入依赖
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>
2.在controller里面引入
@Autowired
private StringRedisTemplate redisTemplate;
3.在方法里
redisTepla.opsForValue().set("abc","1111111");//告诉redic调用并set key-value
]
/3. 设置token至cookie
controller层
注意:uuid过期时间类
/**
* redis常量
* Created by 廖师兄
* 2017-07-30 16:22
*/
public interface RedisConstant {
String TOKEN_PREFIX = "token_%s";
Integer EXPIRE = 7200; //2小时
}
cookie常量类
public interface CookieConstant {
String TOKEN = "token";
Integer EXPIRE = 7200;
}
所需
public class CookieUtil {
/**
* 设置
* @param response
* @param name
* @param value
* @param maxAge
*/
public static void set(HttpServletResponse response,
String name,
String value,
int maxAge) {
Cookie cookie = new Cookie(name, value);
cookie.setPath("/");
cookie.setMaxAge(maxAge);
response.addCookie(cookie);
}
@Controller
@RequestMapping("/seller")
public class SellerUserController {
@Autowired
private SellerService sellerService;
@Autowired
private StringRedisTemplate redisTemplate;
@Autowired
private ProjectUrlConfig projectUrlConfig;
@GetMapping("/login")
public ModelAndView login(@RequestParam("openid") String openid,
HttpServletResponse response,
Map<String, Object> map) {
//1. openid去和数据库里的数据匹配
SellerInfo sellerInfo = sellerService.findSellerInfoByOpenid(openid);
if (sellerInfo == null) {
map.put("msg", ResultEnum.LOGIN_FAIL.getMessage());
map.put("url", "/sell/seller/order/list");
return new ModelAndView("common/error");
}
//2. 设置token至redis
String token = UUID.randomUUID().toString();//uuid通用唯一识别码
Integer expire = RedisConstant.EXPIRE;//uuid过期时间
redisTemplate.opsForValue().set(String.format(RedisConstant.TOKEN_PREFIX, token), openid, expire, TimeUnit.SECONDS);
//3. 设置token至cookie
CookieUtil.set(response, CookieConstant.TOKEN, token, expire);
return new ModelAndView("redirect:" + projectUrlConfig.getSell() + "/sell/seller/order/list");
}
}
3.退出登陆
思路:清楚redis存值和cookie 步骤:1)从cookie里面查询 2).清除redis 3).清除cookie
查询cookie
public class CookieUtil {
/**
* 获取cookie
* @param request
* @param name
* @return
*/
public static Cookie get(HttpServletRequest request,
String name) {
Map<String, Cookie> cookieMap = readCookieMap(request);
if (cookieMap.containsKey(name)) {
return cookieMap.get(name);
}else {
return null;
}
}
/**
* 将cookie封装成Map
* @param request
* @return
*/
private static Map<String, Cookie> readCookieMap(HttpServletRequest request) {
Map<String, Cookie> cookieMap = new HashMap<>();
Cookie[] cookies = request.getCookies();
if (cookies != null) {
for (Cookie cookie: cookies) {
cookieMap.put(cookie.getName(), cookie);
}
}
return cookieMap;
}
}
controller层方法
@GetMapping("/logout")
public ModelAndView logout(HttpServletRequest request,
HttpServletResponse response,
Map<String, Object> map) {
//1. 从cookie里查询
Cookie cookie = CookieUtil.get(request, CookieConstant.TOKEN);
if (cookie != null) {
//2. 清除redis
redisTemplate.opsForValue().getOperations().delete(String.format(RedisConstant.TOKEN_PREFIX, cookie.getValue()));
//3. 清除cookie
CookieUtil.set(response, CookieConstant.TOKEN, null, 0);
}
map.put("msg", ResultEnum.LOGOUT_SUCCESS.getMessage());
map.put("url", "/sell/seller/order/list");
return new ModelAndView("common/success", map);
}
