Java development of WeChat sharing to Moments function

WeChat sharing function development

It took a day to develop the function of sending WeChat to friends and sharing to Moments. I would like to share it with you here to avoid detours.

1. Server-side program

package com.wiimedia.controller;
 
 
import java.io.IOException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Arrays;
import java.util.Date;
 
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
 
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
 
import com.google.gson.Gson;
import com.wiimedia.model.Ticket;
import com.wiimedia.service.ArticleSolrService;
import com.wiimedia.service.TicketRepository;
import com.wiimedia.service.TicketRepositorySolr;
import com.wiimedia.utils.GetRandomStr;
import com.wiimedia.utils.SignatureBean;
import com.wiimedia.utils.weixin.WeixinUtil;
/**
 * 
 * 
 *<p>Project:mryl_phone_v2</p> 
 * 
 *<p>Package:com.wiimedia.controller</p> 
 * 
 *<p>Description:微信分享Controller</p>
 *
 *<p>Company:Wiimedia</p>
 *
 *@Athor:SongJia
 *
 *@Date:2016-7-15 上午09:34:10
 *
 */
 
@Controller
@RequestMapping("/WeixinshareController/Api/Inteface")
public class WeixinshareController {
 @Autowired
 private TicketRepositorySolr ticketRepositorySolr;
 
 @RequestMapping("/getSignature")
 public String getSignature( HttpServletRequest request,
   HttpServletResponse response) throws IOException, ParseException{
  //获取签名页面链接
  String url = request.getParameter("url");
  SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
  //从数据库中获取标签，并检查标签是否过期
  Ticket oldticket = ticketRepositorySolr.getTicketById("20160114wiimediamrylsong1152");
  if(oldticket==null){//第一次访问，标签不存在。
   executeTicket(response,"1",url,format);
   return null;
  }else{//标签存在，判断标签是否超时
   String oldAcquiretime = oldticket.getAcquiretime();
   long difference=format.parse(format.format(new Date())).getTime()-format.parse(oldAcquiretime).getTime();
   if(difference>7100000){//标签超时,重新到微信服务器请求标签超时时间为7200秒（7200000毫秒）
    executeTicket(response,"2",url,format);
    return null; 
   }else{//标签未超时
    /** 
     * 注意事项           
     * 1.签名用的noncestr和timestamp必须与wx.config中的nonceStr和timestamp相同。
     * 2.签名用的url必须是调用JS接口页面的完整URL。      
     * 3.出于安全考虑，开发者必须在服务器端实现签名的逻辑。 
     * 
     ****根据第1点要求   signature 配置的时候很容易出错，需要把生成 Ticket的 noncestr和 timestamp传给客户端***
     */
    String signature = signature(oldticket.getTicket(),oldticket.getTimestamp(),oldticket.getNoncestr(),url);
    SignatureBean signatureBean = new SignatureBean();
    signatureBean.setNoncestr(oldticket.getNoncestr());
    signatureBean.setSignature(signature);
    signatureBean.setTimestamp(oldticket.getTimestamp());
    signatureBean.setUrl(url);
    response.setContentType("text/html;charset=UTF-8");
    response.getWriter().print(new Gson().toJson(signatureBean));
    return null; 
   } 
  }
 
 
 }
 /**
  * 
  *<p>Project:mryl_phone_v2</p> 
  * 
  *<p>:mryl_phone_v2</p> 
  * 
  *<p>Description:更新和获取ticket的方法，因为用的solr所以更新和新增是一样的ID无则添加，有责更新</p>
  *
  *<p>Company:Wiimedia</p>
  *
  *@Athor:SongJia
  *
  *@Date:2016-7-15 上午09:45:00 
  *
  */
 public void executeTicket(HttpServletResponse response,String flag,String url,SimpleDateFormat format) throws IOException{
 
  //获取签名随即字符串
  GetRandomStr randomStr = new GetRandomStr();
  String noncestr = randomStr.getRandomString(15);
  //获取签名时间戳
  String timestamp = Long.toString(System.currentTimeMillis());
  //请求accessToken
  String accessTokenUrl ="https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=您的APPID&secret=您的密匙";
  String tokenJson = WeixinUtil.httpRequest(accessTokenUrl, "GET", null);
  Gson gson = new Gson();
  ShareAccess_Token token = gson.fromJson(tokenJson, ShareAccess_Token.class);
  String to= token.getAccess_token();
  //获取标签
  String urlTicket ="https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token="+to+"&type=jsapi";
  String ticketJson = WeixinUtil.httpRequest(urlTicket, "GET", null);
  Ticket ticket = gson.fromJson(ticketJson, Ticket.class);
  String t = ticket.getTicket();
  //String uuid = UUID.randomUUID().toString().trim().replaceAll("-", "");
  //我的Ticket ID是写死的
  String acquiretime = format.format(new Date());
  ticket.setTid("20160114wiimediamrylsong1152");
  ticket.setAcquiretime(acquiretime);
  ticket.setTimestamp(timestamp);
  ticket.setNoncestr(noncestr);
  //因为用的SOLR所以更新和添加的方法是一样的，可以根据自己具体需求进行修改，本文不再贴出代码.
  if(flag.equals("2")){
   ticketRepositorySolr.addTicketToSolr(ticket); 
  }else{
   ticketRepositorySolr.addTicketToSolr(ticket);
  }
  /** 
   * 注意事项           
   * 1.签名用的noncestr和timestamp必须与wx.config中的nonceStr和timestamp相同。
   * 2.签名用的url必须是调用JS接口页面的完整URL。      
   * 3.出于安全考虑，开发者必须在服务器端实现签名的逻辑。 
   * 
   *根据第1点要求   signature 配置的时候很容易出错，需要把生成 Ticket的 noncestr和 timestamp传给客户端*
   */
  String signature = signature(t,timestamp,noncestr,url);
  SignatureBean signatureBean = new SignatureBean();
  signatureBean.setNoncestr(noncestr);
  signatureBean.setSignature(signature);
  signatureBean.setTimestamp(timestamp);
  signatureBean.setUrl(url);
  response.setContentType("text/html;charset=UTF-8");
  response.getWriter().print(new Gson().toJson(signatureBean));
 }
 
 /**
  * 
  *<p>Project:mryl_phone_v2</p> 
  * 
  *<p>:mryl_phone_v2</p> 
  * 
  *<p>Description:根据标签,时间戳,密匙,URL进行签名</p>
  *
  *<p>Company:Wiimedia</p>
  *
  *@Athor:SongJia
  *
  *@Date:2016-7-15 上午09:37:13 
  *
  */
 private String signature(String jsapi_ticket, String timestamp, String noncestr, String url) {
  jsapi_ticket = "jsapi_ticket=" + jsapi_ticket;
  timestamp = "timestamp=" + timestamp;
  noncestr = "noncestr=" + noncestr;
  url = "url=" + url;
  String[] arr = new String[] { jsapi_ticket, timestamp, noncestr, url };
  // 将token、timestamp、nonce,url参数进行字典序排序
  Arrays.sort(arr);
  StringBuilder content = new StringBuilder();
  for (int i = 0; i < arr.length; i++) {
   content.append(arr[i]);
   if (i != arr.length - 1) {
    content.append("&");
   }
  }
  MessageDigest md = null;
  String tmpStr = null;
 
  try {
   md = MessageDigest.getInstance("SHA-1");
   // 将三个参数字符串拼接成一个字符串进行sha1加密
   byte[] digest = md.digest(content.toString().getBytes());
   tmpStr = byteToStr(digest);
  } catch (NoSuchAlgorithmException e) {
   e.printStackTrace();
  }
 
  content = null;
  return tmpStr;
 }
 /**
  * 将字节转换为十六进制字符串
  * 
  * @param mByte
  * @return
  */
 private static String byteToHexStr(byte mByte) {
 
  char[] Digit = { &#39;0&#39;, &#39;1&#39;, &#39;2&#39;, &#39;3&#39;, &#39;4&#39;, &#39;5&#39;, &#39;6&#39;, &#39;7&#39;, &#39;8&#39;, &#39;9&#39;, &#39;A&#39;, &#39;B&#39;, &#39;C&#39;, &#39;D&#39;, &#39;E&#39;, &#39;F&#39; };
  char[] tempArr = new char[2];
  tempArr[0] = Digit[(mByte >>> 4) & 0X0F];
  tempArr[1] = Digit[mByte & 0X0F];
 
  String s = new String(tempArr);
  return s;
 }
 /**
  * 将字节数组转换为十六进制字符串
  * 
  * @param byteArray
  * @return
  */
 private static String byteToStr(byte[] byteArray) {
  String strDigest = "";
  for (int i = 0; i < byteArray.length; i++) {
   strDigest += byteToHexStr(byteArray[i]);
  }
  return strDigest;
 }
 
 
 class ShareAccess_Token{
  private String access_token;
  private String expires_in;
  public String getAccess_token() {
   return access_token;
  }
  public void setAccess_token(String accessToken) {
   access_token = accessToken;
  }
  public String getExpires_in() {
   return expires_in;
  }
  public void setExpires_in(String expiresIn) {
   expires_in = expiresIn;
  }
 
 }
}

2. Client code.

<script type="text/javascript">
   var url = window.location.href;
   var articleId = "";
   var shareTitle="明日医疗资讯";
   var shareImgUrl="";
   var userinfo = localStorage.getItem("_userinfo");
   var timestamp;
   var noncestr;
   var signature;
   //获取签名
    $.ajax({
      type: "GET",
      url: "WeixinshareController/Api/Inteface/getSignature",
      //data:{timestamp:timestamp,noncestr:noncestr,url:url},
      data:{url:url},
      success: function(data){
        var objData=JSON.parse(data); 
        timestamp=objData.timestamp; 
        noncestr=objData.noncestr; 
        signature=objData.signature;
         console.log(objData);
         wxShare();
      }
     });
   function wxShare(){
   wx.config({
    debug: false, // 开启调试模式,调用的所有api的返回值会在客户端alert出来，若要查看传入的参数，可以在pc端打开，参数信息会通过log打出，仅在pc端时才会打印。
    appId: &#39;您的appid&#39;, // 和获取Ticke的必须一样------必填，公众号的唯一标识
    timestamp:timestamp, // 必填，生成签名的时间戳
    nonceStr: noncestr, // 必填，生成签名的随机串
    signature: signature,// 必填，签名，见附录1
    jsApiList: [
    &#39;onMenuShareAppMessage&#39;
    ] // 必填，需要使用的JS接口列表，所有JS接口列表见附录2
   });
   }
   wx.ready(function(){
     //config信息验证后会执行ready方法，所有接口调用都必须在config接口获得结果之后，
     //config是一个客户端的异步操作，所以如果需要在页面加载时就调用相关接口，则须把相关
     //接口放在ready函数中调用来确保正确执行。对于用户触发时才调用的接口，则可以直接调用，不需要放在ready函数中。
 
    //----------“分享给朋友”
    wx.onMenuShareAppMessage({
     title: "明日医疗资讯", // 分享标题
     desc: shareTitle, // 分享描述
     link: url, // 分享链接
     imgUrl: shareImgUrl, // 分享图标
     type: &#39;&#39;, // 分享类型,music、video或link，不填默认为link
     dataUrl: &#39;&#39;, // 如果type是music或video，则要提供数据链接，默认为空
     success: function () { 
      // 用户确认分享后执行的回调函数、
     },
     cancel: function () { 
      // 用户取消分享后执行的回调函数
     }
    });
    //------------"分享到朋友圈"
    wx.onMenuShareTimeline({
     title: &#39;明日医疗资讯&#39;, // 分享标题
     link: &#39;&#39;, // 分享链接
     imgUrl: shareImgUrl, // 分享图标
     success: function () { 
      // 用户确认分享后执行的回调函数
     },
     cancel: function () { 
      // 用户取消分享后执行的回调函数
     }
    });
    //-------------分享到QQ
    wx.onMenuShareQQ({
     title: &#39;明日医疗资讯&#39;, // 分享标题
     desc: shareTitle, // 分享描述
     link: &#39;&#39;, // 分享链接
     imgUrl: shareImgUrl, // 分享图标
     success: function () { 
      // 用户确认分享后执行的回调函数
     },
     cancel: function () { 
      // 用户取消分享后执行的回调函数
     }
    });
    //-------------分享到QQ空间
    wx.onMenuShareQZone({
     title: &#39;明日医疗资讯&#39;, // 分享标题
     desc: shareTitle, // 分享描述
     link: &#39;&#39;, // 分享链接
     imgUrl: shareImgUrl, // 分享图标
     success: function () { 
      // 用户确认分享后执行的回调函数
     },
     cancel: function () { 
      // 用户取消分享后执行的回调函数
     }
    });
 
   });

3. Tool classes and Model required by the server

① Ticket

package com.wiimedia.model;
 
 
public class Ticket{
 private String tid;
 private String ticket; 
 private String errcode;
 private String errmsg; 
 private String expires_in;
 private String acquiretime;
 private String noncestr;
 private String timestamp;
 
 public Ticket(String tid, String ticket, String errcode, String errmsg,
   String expiresIn, String acquiretime, String noncestr,
   String timestamp) {
  super();
  this.tid = tid;
  this.ticket = ticket;
  this.errcode = errcode;
  this.errmsg = errmsg;
  expires_in = expiresIn;
  this.acquiretime = acquiretime;
  this.noncestr = noncestr;
  this.timestamp = timestamp;
 }
 public String getTid() {
  return tid;
 }
 public void setTid(String tid) {
  this.tid = tid;
 }
 public String getTicket() {
  return ticket;
 }
 public void setTicket(String ticket) {
  this.ticket = ticket;
 }
 public String getErrcode() {
  return errcode;
 }
 public void setErrcode(String errcode) {
  this.errcode = errcode;
 }
 public String getErrmsg() {
  return errmsg;
 }
 public void setErrmsg(String errmsg) {
  this.errmsg = errmsg;
 }
 public String getExpires_in() {
  return expires_in;
 }
 public void setExpires_in(String expiresIn) {
  expires_in = expiresIn;
 }
 public String getAcquiretime() {
  return acquiretime;
 }
 public void setAcquiretime(String acquiretime) {
  this.acquiretime = acquiretime;
 }
 public String getNoncestr() {
  return noncestr;
 }
 public void setNoncestr(String noncestr) {
  this.noncestr = noncestr;
 }
 public String getTimestamp() {
  return timestamp;
 }
 public void setTimestamp(String timestamp) {
  this.timestamp = timestamp;
 }
 
 
}

② The business added to the database is implemented according to your own needs.
③ GetRandomStr

package com.wiimedia.utils;
 
import java.util.Random;
 
public class GetRandomStr {
 /**
  * 
  *<p>Project:mryl_phone_v2</p> 
  * 
  *<p>:mryl_phone_v2</p> 
  * 
  *<p>Description:生成随即字符串 </p>
  *
  *<p>Company:Wiimedia</p>
  *
  *@Athor:SongJia
  *
  *@Date:2016-7-14 上午11:14:46 
  *
  */
 public String getRandomString(int length) {
  String base = "abcdefghijklmnopqrstuvwxyz0123456789"; 
  Random random = new Random(); 
  StringBuffer sb = new StringBuffer(); 
  for (int i = 0; i < length; i++) { 
   int number = random.nextInt(base.length()); 
   sb.append(base.charAt(number)); 
  } 
  return sb.toString(); 
  }
}

④ SignatureBean

package com.wiimedia.utils;
 
public class SignatureBean {
 private String noncestr;
 private String url;
 private String timestamp;
 private String signature;
 public String getNoncestr() {
  return noncestr;
 }
 public void setNoncestr(String noncestr) {
  this.noncestr = noncestr;
 }
 public String getUrl() {
  return url;
 }
 public void setUrl(String url) {
  this.url = url;
 }
 public String getTimestamp() {
  return timestamp;
 }
 public void setTimestamp(String timestamp) {
  this.timestamp = timestamp;
 }
 public String getSignature() {
  return signature;
 }
 public void setSignature(String signature) {
  this.signature = signature;
 }
 
}

⑤ WeixinUtil

package com.wiimedia.utils.weixin;
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.ConnectException;
import java.net.URL;
 
import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSocketFactory;
import javax.net.ssl.TrustManager;
 
/**
  * 
  *<p>Project:mryl_phone_v2</p> 
  * 
  *<p>:mryl_phone_v2</p> 
  * 
  *<p>Description:公众平台接口工具类</p>
  *
  *<p>Company:Wiimedia</p>
  *
  *@Athor:SongJia
  *
  *@Date:2016-7-15 上午09:37:13 
  *
  */
public class WeixinUtil {
 
 /** 
  * 发起https请求并获取结果 
  * 
  * @param requestUrl 请求地址 
  * @param requestMethod 请求方式（GET、POST） 
  * @param outputStr 提交的数据 
  * @return JSONObject(通过JSONObject.get(key)的方式获取json对象的属性值) 
  */
 public static String httpRequest(String requestUrl, String requestMethod, String outputStr) { 
 
  StringBuffer buffer = new StringBuffer(); 
  try { 
   // 创建SSLContext对象，并使用我们指定的信任管理器初始化 
   TrustManager[] tm = { new MyX509TrustManager() }; 
   SSLContext sslContext = SSLContext.getInstance("SSL", "SunJSSE"); 
   sslContext.init(null, tm, new java.security.SecureRandom()); 
   // 从上述SSLContext对象中得到SSLSocketFactory对象 
   SSLSocketFactory ssf = sslContext.getSocketFactory(); 
 
   URL url = new URL(requestUrl); 
   HttpsURLConnection httpUrlConn = (HttpsURLConnection) url.openConnection(); 
   httpUrlConn.setSSLSocketFactory(ssf); 
 
   httpUrlConn.setDoOutput(true); 
   httpUrlConn.setDoInput(true); 
   httpUrlConn.setUseCaches(false); 
   // 设置请求方式（GET/POST） 
   httpUrlConn.setRequestMethod(requestMethod); 
 
   if ("GET".equalsIgnoreCase(requestMethod)) 
    httpUrlConn.connect(); 
 
   // 当有数据需要提交时 
   if (null != outputStr) { 
    OutputStream outputStream = httpUrlConn.getOutputStream(); 
    // 注意编码格式，防止中文乱码 
    outputStream.write(outputStr.getBytes("UTF-8")); 
    outputStream.close(); 
   } 
 
   // 将返回的输入流转换成字符串 
   InputStream inputStream = httpUrlConn.getInputStream(); 
   InputStreamReader inputStreamReader = new InputStreamReader(inputStream, "utf-8"); 
   BufferedReader bufferedReader = new BufferedReader(inputStreamReader); 
 
   String str = null; 
   while ((str = bufferedReader.readLine()) != null) { 
    buffer.append(str); 
   } 
   bufferedReader.close(); 
   inputStreamReader.close(); 
   // 释放资源 
   inputStream.close(); 
   inputStream = null; 
   httpUrlConn.disconnect(); 
   return buffer.toString(); 
  } catch (ConnectException ce) { 
   ce.printStackTrace(); 
  } catch (Exception e) { 
   e.printStackTrace();
  } 
  return ""; 
 }
}

4. So far , the sharing function has been developed, but many problems will be encountered when generating signatures. Here are some troubleshooting methods for wx.config failure.

① Confirm whether your generated signature is correct
Verify at http://mp.weixin.qq.com/debug/cgi-bin/sandbox?t=jsapisign provided by WeChat

② Are the noncestr and timestamp used in wx.config consistent with the corresponding noncestr and timestamp used in the signature... As shown above (1. Server code)
(It may be due to the JS page loading order problem, the server The generated signature, noncestr, and timestamp are not obtained in wx.config).

③ Confirm that the url is the complete url of the page, including the GET parameter part
Need to remove the part after

#④ Is the appid in config consistent with the appid used to obtain jsapi_ticket

⑤ The error {errmsg: config:ok} is the normal return of debug. Just turn off the debug mode and OK
wx.config debug: false,

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