java获取小程序openid,unionid

最新推荐文章于 2024-07-26 03:20:36 发布

不急god

最新推荐文章于 2024-07-26 03:20:36 发布

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本文链接：https://blog.youkuaiyun.com/sdzhangshulong/article/details/105722678

版权

首先一个条件是公众平台要和开放平台相互关联,否则是获取不到unionid的

前台代码

// 登录
          //首次登录时,将code传入后台,获取openid,并且在授权后放入缓存中
          wx.login({
            success: res => {
              console.log("授权页面里的登录参数:")
              console.log(res)
              // 发送 res.code 到后台换取 openId, sessionKey, unionId
            //   request({
            //       'url':'http://localhost:8080/test1',
            //       'data':{
            //           code:res.code
            //       }
            //   }).then(
            //       (res)=>{
            //           console.log('哈哈哈哈哈')
            //           console.log(res);
            //       }
            //   )
            console.log("code")
            console.log(res.code)
            wx.request({
                url: 'http://localhost:8080/test',
                method:'post',
                header: {
                    'content-type': 'application/x-www-form-urlencoded' // 默认值
                  },
                data: {
                    code: res.code,
                    encryptedData: e.detail.encryptedData,
                    iv: e.detail.iv
                },success:function(res2){
                    console.log("res2")
                    console.log(res2)
                }
              })
            // wx.request({
            //     url: 'http://localhost:8080/test1?code='+res.code,
            //     method:'get',
                
            //     success:(res1)=>{
            //         console.log(res1)
                    

            //     }
            //   })

              


              //app.globalData.openid="test"
              //console.log(app.globalData.openid)
            }
          })

后台代码

解密工具类

package io.matching.modules.h5.controller;

import org.apache.commons.codec.binary.Base64;
import org.bouncycastle.jce.provider.BouncyCastleProvider;
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.*;
import java.security.spec.InvalidParameterSpecException;

public class AesUtil {
    static {
        //BouncyCastle是一个开源的加解密解决方案，主页在http://www.bouncycastle.org/
        Security.addProvider(new BouncyCastleProvider());
    }

    /**
     * AES解密
     *
     * @param data           //密文，被加密的数据
     * @param key            //秘钥
     * @param iv             //偏移量
     * @param encodingFormat //解密后的结果需要进行的编码
     * @return
     * @throws Exception
     */
    public static String decrypt(String data, String key, String iv, String encodingFormat) throws Exception {

        //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 {
            Cipher cipher = Cipher.getInstance("AES/CBC/PKCS7Padding");
            SecretKeySpec spec = new SecretKeySpec(keyByte, "AES");
            AlgorithmParameters parameters = AlgorithmParameters.getInstance("AES");
            parameters.init(new IvParameterSpec(ivByte));
            cipher.init(Cipher.DECRYPT_MODE, spec, parameters);// 初始化
            byte[] resultByte = cipher.doFinal(dataByte);
            if (null != resultByte && resultByte.length > 0) {
                String result = new String(resultByte, encodingFormat);
                return result;
            }
            return null;
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        } catch (NoSuchPaddingException e) {
            e.printStackTrace();
        } catch (InvalidParameterSpecException 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;
    }

}

接口代码

package io.matching.modules.h5.controller;

import com.alibaba.fastjson.JSONObject;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;

import java.net.URLEncoder;
import java.util.HashMap;
import java.util.Map;
import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStreamReader;

import java.io.OutputStreamWriter;

import java.io.PrintWriter;

import java.net.URL;

import java.net.URLConnection;

import java.util.List;

import java.util.Map;
/**
 * @program: matching-security
 * @description:
 * @author: zhangshulong
 * @create: 2020-04-23 20:54
 **/
@RestController
public class TestController {

    @RequestMapping("/test")
    public Map decodeUserInfo(String encryptedData, String iv, String code) {


        Map map = new HashMap();

        //登录凭证不能为空
        if (code == null || code.length() == 0) {
            map.put("status", 0);
            map.put("msg", "code 不能为空");
            return map;
        }
        //todo 填写你自己的信息
        //你自己的appid
        String wxspAppid = "";
        //小程序的 app secret (在微信小程序管理后台获取)
        String wxspSecret = "";
        //授权（必填）
        String grant_type = "authorization_code";
         1、向微信服务器 使用登录凭证 code 获取 session_key 和 openid 
        //请求参数
        String params = "appid=" + wxspAppid + "&secret=" + wxspSecret + "&js_code=" + code + "&grant_type=" + grant_type;
        //发送请求
        String sr = sendGet("https://api.weixin.qq.com/sns/jscode2session", params);
        //解析相应内容（转换成json对象）
        JSONObject json = JSONObject.parseObject(sr);
        //获取会话密钥（session_key）
        String session_key = json.get("session_key").toString();
        //用户的唯一标识（openid）
        String openid = (String) json.get("openid");

         2、对encryptedData加密数据进行AES解密 
        try {
            String result = AesUtil.decrypt(encryptedData, session_key, iv, "UTF-8");
            if (null != result && result.length() > 0) {
                map.put("status", 1);
                map.put("msg", "解密成功");

                JSONObject userInfoJSON = JSONObject.parseObject(result);
                Map userInfo = new HashMap();
                userInfo.put("openId", userInfoJSON.get("openId"));
                userInfo.put("nickName", userInfoJSON.get("nickName"));
                userInfo.put("gender", userInfoJSON.get("gender"));
                userInfo.put("city", userInfoJSON.get("city"));
                userInfo.put("province", userInfoJSON.get("province"));
                userInfo.put("country", userInfoJSON.get("country"));
                userInfo.put("avatarUrl", userInfoJSON.get("avatarUrl"));
                userInfo.put("unionId", userInfoJSON.get("unionId"));
                map.put("userInfo", userInfo);
                return map;
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        map.put("status", 0);
        map.put("msg", "解密失败");
        return map;
    }


    public static String sendGet(String url, String param) {

        String result = "";

        BufferedReader in = null;

        try {

            String urlNameString = url + "?" + param;

            URL realUrl = new URL(urlNameString);

            // 打开和URL之间的连接

            URLConnection connection = realUrl.openConnection();

            // 设置通用的请求属性

            connection.setRequestProperty("accept", "*/*");

            connection.setRequestProperty("connection", "Keep-Alive");

            connection.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");

            // 建立实际的连接

            connection.connect();

            // 获取所有响应头字段

            Map<String, List<String>> map = connection.getHeaderFields();

            // 遍历所有的响应头字段

            for (String key : map.keySet()) {

                // System.out.println(key + "--->" + map.get(key));

            }

            // 定义 BufferedReader输入流来读取URL的响应

            in = new BufferedReader(new InputStreamReader(connection.getInputStream(), "utf-8"));

            // in = new BufferedReader(new
            // InputStreamReader(connection.getInputStream()));

            String line;

            while ((line = in.readLine()) != null) {

                result += line;

            }

        } catch (Exception e) {

            System.out.println("发送GET请求出现异常！" + e);

            e.printStackTrace();

        }

        // 使用finally块来关闭输入流

        finally {

            try {

                if (in != null) {

                    in.close();

                }

            } catch (Exception e2) {

                e2.printStackTrace();

            }

        }

        return result;

    }
    @RequestMapping("/test1")
    public JSONObject test1(String code){
        String jsonId=getopenid("wx2f92050c7deb49ba",code,"f488eb8c6a8a16ca577c47b94d153cb8");
        JSONObject jsonObject=JSONObject.parseObject(jsonId);
        // JSONObject jsonObject = JSONObject.fromObject(jsonId);
        return jsonObject;
    }



    public String getopenid(String appid,String code,String secret) {

        BufferedReader in = null;
        //appid和secret是开发者分别是小程序ID和小程序密钥，开发者通过微信公众平台-》设置-》开发设置就可以直接获取，
        String url="https://api.weixin.qq.com/sns/jscode2session?appid="
                +appid+"&secret="+secret+"&js_code="+code+"&grant_type=authorization_code";
        try {
            URL weChatUrl = new URL(url);
            // 打开和URL之间的连接
            URLConnection connection = weChatUrl.openConnection();
            // 设置通用的请求属性
            connection.setConnectTimeout(5000);
            connection.setReadTimeout(5000);
            // 建立实际的连接
            connection.connect();
            // 定义 BufferedReader输入流来读取URL的响应
            in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
            StringBuffer sb = new StringBuffer();
            String line;
            while ((line = in.readLine()) != null) {
                sb.append(line);
            }
            return sb.toString();
        } catch (Exception e1) {
            throw new RuntimeException(e1);
        }
        // 使用finally块来关闭输入流
	        finally {
            try {
                if (in != null) {
                    in.close();
                }
            } catch (Exception e2) {
                e2.printStackTrace();
            }
        }
    }
}

另外需要引入依赖

<dependency>
    <groupId>org.bouncycastle</groupId>
    <artifactId>bcprov-jdk15on</artifactId>
    <version>1.52</version>
</dependency>