微信小程序授权获取用户信息和手机号码
1.微信官方文档
登录：https://developers./miniprogram/dev/framework/open-ability/login.html
手机号：https://developers./miniprogram/dev/framework/open-ability/getPhoneNumber.html
2.获取用户手机号步骤
3.java后台 直接上干活
3.1 ApiLoginController
import com.alibaba.fastjson.JSONObject;import mon.HttpClientUtils;import mon.exception.DYTException;import com.dyt.config.WeixinLoginProperties;import com.dyt.utils.WXBizDataCrypt;import com.dyt.vo.R;import com.google.gson.Gson;import io.swagger.annotations.Api;import io.swagger.annotations.ApiOperation;import org.springframework.util.StringUtils;import org.springframework.web.bind.annotation.PostMapping;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.ResponseBody;import org.springframework.web.bind.annotation.RestController;import java.util.HashMap;import java.util.Map;@Api(tags = "微信小程序登录、获取手机号")@RestControllerpublic class ApiLoginController {@ApiOperation(value = "登录")@PostMapping("/wxlogin")public R callback(String code,String encryptedData,String iv){System.out.println("----------------------------------------------");//1.判断code是否合法if(StringUtils.isEmpty(code)){throw new DYTException(2,"登录失败，尝试刷新重新登录!");}//2：通过code获取access_tokenString baseAccessTokenUrl = WeixinLoginProperties.WX_OPEN_GATEWAY+"?appid=%s" +"&secret=%s" +"&js_code=%s" +"&grant_type=authorization_code";String accessTokenUrl = String.format(baseAccessTokenUrl, WeixinLoginProperties.WX_OPEN_APP_ID, WeixinLoginProperties.WX_OPEN_APP_SECRET, code);String result = null;try {//执行请求，获取微信请求返回得数据 RestTemplate httpClientUtilsresult = new HttpClientUtils().get(accessTokenUrl);//对微信返回得数据进行转换Gson gson = new Gson();Map<String, Object> resultMap = gson.fromJson(result, HashMap.class);if (resultMap.get("errcode") != null) {throw new DYTException(2,"微信登录出错!");}//解析微信用户得唯一凭证openidString openid = (String) resultMap.get("openid");if (StringUtils.isEmpty(openid)) {throw new DYTException(2,"登录失败，尝试刷新重新登录!");}String session_key =(String)resultMap.get("session_key");String res = WXBizDataCrypt.decrypt1(encryptedData,session_key,iv);JSONObject json=JSONObject.parseObject(res);System.out.println("-----------json------------------"+json);if (!StringUtils.isEmpty(res)&&res.length()>0){String sex="0";if(json.getInteger("gender")==1){sex="男";}else if(json.getInteger("gender")==2){sex="女";}resultMap.put("avatarUrl",json.getString("avatarUrl"));resultMap.put("nickName",json.getString("nickName"));resultMap.put("sex",sex);}//封装返回return R.ok().data("resultMap",resultMap);}catch (Exception e){return R.error().code(601).message("微信解析失败");}}/*** 小程序授权获取手机号*/@ApiOperation(value = "获取手机号")@PostMapping("/getPhoneNumber")@ResponseBodypublic Map<String,Object> getPhoneNumber(String encryptedData, String iv, String session_key) {Map<String,Object> map=new HashMap<>();String result= WXBizDataCrypt.decrypt1(encryptedData,session_key,iv);JSONObject json=JSONObject.parseObject(result);if (!StringUtils.isEmpty(result)&&result.length()>0) {//map.put("purePhoneNumber", json.getString("purePhoneNumber"));map.put("phoneNumber", json.getString("phoneNumber"));//map.put("countryCode", json.getString("countryCode"));map.put("msg","success");}map.put("msg","error");return map;}}
3.2 解密工具类
import mons.codec.binary.Base64;import javax.crypto.BadPaddingException;import javax.crypto.Cipher;import javax.crypto.IllegalBlockSizeException;import javax.crypto.NoSuchPaddingException;import javax.crypto.spec.IvParameterSpec;import javax.crypto.spec.SecretKeySpec;import java.io.UnsupportedEncodingException;import java.security.InvalidAlgorithmParameterException;import java.security.InvalidKeyException;import java.security.NoSuchAlgorithmException;import java.security.spec.AlgorithmParameterSpec;public class WXBizDataCrypt {/*** AES解密** @param data //密文，被加密的数据* @param key //秘钥* @param iv//偏移量* @return* @throws Exception*/public static String decrypt1(String data, String key,String iv){//被加密的数据byte[] dataByte = Base64.decodeBase64(data);//加密秘钥byte[] keyByte = Base64.decodeBase64(key);//偏移量byte[] ivByte = Base64.decodeBase64(iv);try {AlgorithmParameterSpec ivSpec = new IvParameterSpec(ivByte);Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");SecretKeySpec keySpec = new SecretKeySpec(keyByte, "AES");cipher.init(Cipher.DECRYPT_MODE, keySpec, ivSpec);return new String(cipher.doFinal(dataByte),"UTF-8");} catch (NoSuchAlgorithmException e) {e.printStackTrace();} catch (NoSuchPaddingException e) {e.printStackTrace();} catch (InvalidKeyException e) {e.printStackTrace();} catch (InvalidAlgorithmParameterException e) {e.printStackTrace();} catch (IllegalBlockSizeException e) {e.printStackTrace();} catch (BadPaddingException e) {e.printStackTrace();} catch (UnsupportedEncodingException e) {e.printStackTrace();}return null;}}
