package com.panzhihua.applets.api;
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import com.alibaba.fastjson.JSON;
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import com.alibaba.fastjson.JSONObject;
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import com.panzhihua.common.constants.UserConstants;
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import com.panzhihua.common.model.vos.R;
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import com.panzhihua.common.utlis.HttpClientUtil;
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import com.panzhihua.common.utlis.StringUtils;
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import io.swagger.annotations.ApiOperation;
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import lombok.extern.slf4j.Slf4j;
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import org.springframework.data.redis.core.StringRedisTemplate;
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import org.springframework.data.redis.core.ValueOperations;
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import org.springframework.web.bind.annotation.*;
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import javax.annotation.Resource;
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import java.io.*;
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import java.net.HttpURLConnection;
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import java.net.MalformedURLException;
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import java.net.ProtocolException;
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import java.net.URL;
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import java.nio.charset.Charset;
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import java.util.*;
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import java.util.concurrent.TimeUnit;
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@Slf4j
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@RestController
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@RequestMapping("/official")
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public class WxOfficialApi {
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@Resource
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private StringRedisTemplate stringRedisTemplate;
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//公众号appid
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private List<String> appidList = new ArrayList<String>(){{this.add("wx7c733ebbf6c55ecf");this.add("wxc94f0cddf13577d5");}};
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//公众号secret
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private List<String> secretList = new ArrayList<String>(){{this.add("500290552cbfdd1c1c18131c5807b6ae");this.add("3418127405845701497a09f65678953f");}};
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/**
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* 获取token
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* @param appid 公众号appid
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* @param secret 公众号secret
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* @return token
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*/
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private String getToken(String appid,String secret) throws MalformedURLException, IOException, ProtocolException {
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// access_token接口https请求方式: GET https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=APPID&secret=APPSECRET
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String path = " https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential";
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URL url = new URL(path+"&appid=" + appid + "&secret=" + secret);
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HttpURLConnection connection = (HttpURLConnection) url.openConnection();
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connection.setRequestMethod("GET");
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connection.connect();
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InputStream in = connection.getInputStream();
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byte[] b = new byte[100];
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int len = -1;
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StringBuffer sb = new StringBuffer();
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while((len = in.read(b)) != -1) {
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sb.append(new String(b,0,len));
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}
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// System.out.println(sb.toString());
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in.close();
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return sb.toString();
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}
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/**
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* 通过token获取公众号文章
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* @param token token
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* @return 获取的文章列表结果
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*/
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private String getContentList(String token) throws IOException {
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String path = " https://api.weixin.qq.com/cgi-bin/material/batchget_material?access_token=" + token;
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URL url = new URL(path);
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HttpURLConnection connection = (HttpURLConnection) url.openConnection();
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connection.setRequestMethod("POST");
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connection.setDoOutput(true);
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connection.setRequestProperty("content-type", "application/json;charset=utf-8");
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connection.connect();
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// post发送的参数
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Map<String, Object> map = new HashMap<>();
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map.put("type", "news"); // news表示图文类型的素材，具体看API文档
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map.put("offset", 0);
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map.put("count", 5);
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// 将map转换成json字符串
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String paramBody = JSON.toJSONString(map); // 这里用了Alibaba的fastjson
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OutputStream out = connection.getOutputStream();
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BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(out,"utf-8"));
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bw.write(paramBody); // 向流中写入参数字符串
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bw.flush();
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InputStream in = connection.getInputStream();
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byte[] b = new byte[100];
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int len = -1;
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StringBuffer sb = new StringBuffer();
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while((len = in.read(b)) != -1) {
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sb.append(new String(b,0,len,"UTF-8"));
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}
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in.close();
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return sb.toString();
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}
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/**
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* 微信公众号请求头设置
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*/
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public static Map<String, String> getWxHeaderMap() {
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Map<String, String> map = new HashMap<>(new LinkedHashMap());
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map.put("Accept", "text/html, application/xhtml+xml, image/jxr, */*");
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map.put("Accept-Encoding", "gzip, deflate");
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map.put("Accept-Language", "zh-Hans-CN, zh-Hans; q=0.8, en-US; q=0.5, en; q=0.3");
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map.put("Host", "mp.weixin.qq.com");
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map.put("If-Modified-Since", "Sat, 04 Jan 2020 12:23:43 GMT");
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map.put("User-Agent", "Mozilla/5.0 (Windows NT 10.0; WOW64; Trident/7.0; rv:11.0) like Gecko");
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return map;
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}
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/**
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* 根据文章链接抓取文章内容
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*
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* @param url 文章链接
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* @return 文章内容
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*/
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public static String getActicle(String url) {
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// post发送的参数
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Map<String, Object> map = new HashMap<>();
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map.put("type", "news"); // news表示图文类型的素材，具体看API文档
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map.put("offset", 0);
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map.put("count", 5);
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// 将map转换成json字符串
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String paramBody = JSON.toJSONString(map);
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return HttpClientUtil.get(url, getWxHeaderMap(),paramBody);
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}
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@ApiOperation(value = "拉取公众号列表")
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@GetMapping(value = "/list/noToken",produces="application/json;charset=utf-8")
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public R pageDiscuss() throws Exception{
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WxOfficialApi officialApi = new WxOfficialApi();
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List<String> tokenList = new ArrayList<>();
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if(!appidList.isEmpty()){
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for (int i = 0; i < appidList.size(); i++) {
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String token = officialApi.getToken(appidList.get(i),secretList.get(i));
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log.info("通过appid:"+appidList.get(i)+"获取token返回参数：" + token);
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JSONObject tokenJson = JSON.parseObject(token);
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if(StringUtils.isNotEmpty(tokenJson)){
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tokenList.add(tokenJson.getString("access_token"));
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}
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}
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}
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List<JSONObject> resultList = new ArrayList<>();
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if(!tokenList.isEmpty()){
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tokenList.forEach(token -> {
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try {
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String url = "https://api.weixin.qq.com/cgi-bin/material/batchget_material?access_token=" + token;
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String result = getActicle(url);
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log.info("通过token获取文章列表成功,返回结果：" + result);
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JSONObject resultJson = JSON.parseObject(result);
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if(resultJson != null){
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List<JSONObject> itemList = JSON.parseArray(resultJson.getString("item"),JSONObject.class);
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if(!itemList.isEmpty()){
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for (JSONObject object : itemList) {
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String newsId = object.getString("media_id");
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JSONObject contentJson = JSON.parseObject(object.getString("content"));
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List<JSONObject> newsItemList = JSON.parseArray(contentJson.getString("news_item"),JSONObject.class);
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String newsUrl = newsItemList.get(0).getString("url");
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newsItemList.get(0).put("news_id",newsId);
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contentJson.put("news_item",newsItemList);
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object.put("content",contentJson);
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ValueOperations<String, String> valueOperations = stringRedisTemplate.opsForValue();
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valueOperations.set(UserConstants.NEWS_ID + newsId, newsUrl + "", 2, TimeUnit.DAYS);
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}
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}
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resultJson.put("item",itemList);
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}
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resultList.add(resultJson);
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}catch (Exception e){
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log.error("通过token获取文章列表失败，错误原因：" + e.getMessage());
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}
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});
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}
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return R.ok(resultList);
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}
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@ApiOperation(value = "获取公众号文章链接")
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@GetMapping(value = "/get/noToken")
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public R getDiscuss(@RequestParam("mediaId") String mediaId){
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String key = UserConstants.NEWS_ID + mediaId;
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Boolean hasKey = stringRedisTemplate.hasKey(key);
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if (!hasKey) {
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return R.fail("未找到该文章的链接地址");
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}
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ValueOperations<String, String> valueOperations = stringRedisTemplate.opsForValue();
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String url = valueOperations.get(key);
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return R.ok(url);
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}
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}
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