package com.stylefeng.guns.modular.system.util.wxutils;
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import com.alibaba.fastjson.JSON;
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import com.alibaba.fastjson.JSONObject;
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import org.apache.commons.codec.binary.Base64;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.http.*;
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import org.springframework.stereotype.Component;
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import org.springframework.web.client.RestTemplate;
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import java.io.ByteArrayInputStream;
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import java.io.InputStream;
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import java.util.HashMap;
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import java.util.Map;
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/**
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* 微信工具类
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*/
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@Component
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public class WeChatUtil {
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@Autowired
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private RestTemplate restTemplate;
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/**
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* 小程序使用jscode获取openid
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* @param jscode
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* @return
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*/
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public Map<String, String> code2Session(String jscode,String appid,String secret){
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String url = "https://api.weixin.qq.com/sns/jscode2session?appid=" + appid + "&secret=" + secret
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+ "&js_code=" + jscode + "&grant_type=authorization_code";
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String forObject = restTemplate.getForObject(url, String.class);
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JSONObject jsonObject = JSON.parseObject(forObject);
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int errcode = jsonObject.getIntValue("errcode");
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Map<String, String> map = new HashMap<>();
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if(errcode == 0){//成功
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map.put("openid", jsonObject.getString("openid"));
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map.put("sessionKey", jsonObject.getString("session_key"));
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map.put("unionid", jsonObject.getString("unionid"));
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return map;
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}
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if(errcode == -1){//系统繁忙，此时请开发者稍候再试
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map.put("msg", jsonObject.getString("errmsg"));
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return map;
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}
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if(errcode == 40029){//code 无效
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map.put("msg", jsonObject.getString("errmsg"));
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return map;
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}
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if(errcode == 45011){//频率限制，每个用户每分钟100次
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map.put("msg", jsonObject.getString("errmsg"));
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return map;
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}
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return null;
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}
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/***
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* 获取jsapiTicket（公众号）
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* 来源 www.vxzsk.com
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* @return
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*/
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public String getJSApiTicket(){
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//获取token
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String acess_token= this.getAccessToken();
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String urlStr = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token=" + acess_token + "&type=jsapi";
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String backData = restTemplate.getForObject(urlStr, String.class);
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System.out.println(backData);
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String ticket = JSONObject.parseObject(backData).getString("ticket");
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return ticket;
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}
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/***
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* 获取acess_token (公众号)
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* 来源www.vxzsk.com
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* @return
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*/
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public String getAccessToken(){
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String url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=wx0e72f86394831b34&secret=930f857abc74f7bb5cbd89e1544c5669";
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String backData = restTemplate.getForObject(url, String.class);
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String accessToken = JSONObject.parseObject(backData).getString("access_token");
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return accessToken;
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}
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/***
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* 获取acess_token (小程序)
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* 来源www.vxzsk.com
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* @return
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*/
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public String getAccessToken2(String appid,String secret){
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String url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid="+appid+"&secret="+secret;
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String backData = restTemplate.getForObject(url, String.class);
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String accessToken = JSONObject.parseObject(backData).getString("access_token");
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return accessToken;
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}
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/**
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* 获取小程序二维码
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* @param page 跳转页 例如 pages/index/index
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* @param scene 参数 a=1&b=2
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*/
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public InputStream getwxacodeunlimit(String appid,String secret,String page, String scene, String envVersion) throws Exception{
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try {
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//String wxAppletsAccessToken = redisUtil.getValue("wxAppletsAccessToken");
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String wxAppletsAccessToken = getAccessToken2(appid,secret);
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String url = "https://api.weixin.qq.com/wxa/getwxacodeunlimit?access_token=" + wxAppletsAccessToken;
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Map<String, Object> param = new HashMap<>();
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param.put("scene", scene);
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param.put("page", page);
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param.put("env_version", envVersion);
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HttpHeaders httpHeaders = new HttpHeaders();
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MediaType type=MediaType.parseMediaType("application/json;charset=UTF-8");
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httpHeaders.setContentType(type);
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HttpEntity<Map<String, Object>> requestEntity = new HttpEntity<>(param, httpHeaders);
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// System.err.println(body1);
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ResponseEntity<byte[]> entity = restTemplate.exchange(url, HttpMethod.POST, requestEntity, byte[].class, new Object[0]);
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byte[] body = entity.getBody();
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System.err.println(JSON.toJSON(entity));
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System.err.println(Base64.encodeBase64String(body));
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return new ByteArrayInputStream(body);
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}catch (Exception e){
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e.printStackTrace();
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}
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return null;
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}
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}
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