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java微信開發(fā)代碼 微信開發(fā)代碼全部

如何用java開發(fā)微信

說明:

為昂昂溪等地區(qū)用戶提供了全套網(wǎng)頁設計制作服務,及昂昂溪網(wǎng)站建設行業(yè)解決方案。主營業(yè)務為網(wǎng)站設計制作、成都做網(wǎng)站、昂昂溪網(wǎng)站設計,以傳統(tǒng)方式定制建設網(wǎng)站,并提供域名空間備案等一條龍服務,秉承以專業(yè)、用心的態(tài)度為用戶提供真誠的服務。我們深信只要達到每一位用戶的要求,就會得到認可,從而選擇與我們長期合作。這樣,我們也可以走得更遠!

本次的教程主要是對微信公眾平臺開發(fā)者模式的講解,網(wǎng)絡上很多類似文章,但很多都讓初學微信開發(fā)的人一頭霧水,所以總結自己的微信開發(fā)經(jīng)驗,將微信開發(fā)的整個過程系統(tǒng)的列出,并對主要代碼進行講解分析,讓初學者盡快上手。

在閱讀本文之前,應對微信公眾平臺的官方開發(fā)文檔有所了解,知道接收和發(fā)送的都是xml格式的數(shù)據(jù)。另外,在做內容回復時用到了圖靈機器人的api接口,這是一個自然語言解析的開放平臺,可以幫我們解決整個微信開發(fā)過程中最困難的問題,此處不多講,下面會有其詳細的調用方式。

1.1 在登錄微信官方平臺之后,開啟開發(fā)者模式,此時需要我們填寫url和token,所謂url就是我們自己服務器的接口,用WechatServlet.java來實現(xiàn),相關解釋已經(jīng)在注釋中說明,代碼如下:

[java]?view plain?copy

package?demo.servlet;

import?java.io.BufferedReader;

import?java.io.IOException;

import?java.io.InputStream;

import?java.io.InputStreamReader;

import?java.io.OutputStream;

import?javax.servlet.ServletException;

import?javax.servlet.http.HttpServlet;

import?javax.servlet.http.HttpServletRequest;

import?javax.servlet.http.HttpServletResponse;

import?demo.process.WechatProcess;

/**

*?微信服務端收發(fā)消息接口

*

*?@author?pamchen-1

*

*/

public?class?WechatServlet?extends?HttpServlet?{

/**

*?The?doGet?method?of?the?servlet.?br

*

*?This?method?is?called?when?a?form?has?its?tag?value?method?equals?to?get.

*

*?@param?request

*????????????the?request?send?by?the?client?to?the?server

*?@param?response

*????????????the?response?send?by?the?server?to?the?client

*?@throws?ServletException

*?????????????if?an?error?occurred

*?@throws?IOException

*?????????????if?an?error?occurred

*/

public?void?doGet(HttpServletRequest?request,?HttpServletResponse?response)

throws?ServletException,?IOException?{

request.setCharacterEncoding("UTF-8");

response.setCharacterEncoding("UTF-8");

/**?讀取接收到的xml消息?*/

StringBuffer?sb?=?new?StringBuffer();

InputStream?is?=?request.getInputStream();

InputStreamReader?isr?=?new?InputStreamReader(is,?"UTF-8");

BufferedReader?br?=?new?BufferedReader(isr);

String?s?=?"";

while?((s?=?br.readLine())?!=?null)?{

sb.append(s);

}

String?xml?=?sb.toString();?//次即為接收到微信端發(fā)送過來的xml數(shù)據(jù)

String?result?=?"";

/**?判斷是否是微信接入激活驗證,只有首次接入驗證時才會收到echostr參數(shù),此時需要把它直接返回?*/

String?echostr?=?request.getParameter("echostr");

if?(echostr?!=?null??echostr.length()??1)?{

result?=?echostr;

}?else?{

//正常的微信處理流程

result?=?new?WechatProcess().processWechatMag(xml);

}

try?{

OutputStream?os?=?response.getOutputStream();

os.write(result.getBytes("UTF-8"));

os.flush();

os.close();

}?catch?(Exception?e)?{

e.printStackTrace();

}

}

/**

*?The?doPost?method?of?the?servlet.?br

*

*?This?method?is?called?when?a?form?has?its?tag?value?method?equals?to

*?post.

*

*?@param?request

*????????????the?request?send?by?the?client?to?the?server

*?@param?response

*????????????the?response?send?by?the?server?to?the?client

*?@throws?ServletException

*?????????????if?an?error?occurred

*?@throws?IOException

*?????????????if?an?error?occurred

*/

public?void?doPost(HttpServletRequest?request,?HttpServletResponse?response)

throws?ServletException,?IOException?{

doGet(request,?response);

}

}

1.2 相應的web.xml配置信息如下,在生成WechatServlet.java的同時,可自動生成web.xml中的配置。前面所提到的url處可以填寫例如:http;//服務器地址/項目名/wechat.do

[html]?view plain?copy

?xml?version="1.0"?encoding="UTF-8"?

web-app?version="2.5"

xmlns=""

xmlns:xsi=""

xsi:schemaLocation="

"

servlet

descriptionThis?is?the?description?of?my?J2EE?component/description

display-nameThis?is?the?display?name?of?my?J2EE?component/display-name

servlet-nameWechatServlet/servlet-name

servlet-classdemo.servlet.WechatServlet/servlet-class

/servlet

servlet-mapping

servlet-nameWechatServlet/servlet-name

url-pattern/wechat.do/url-pattern

/servlet-mapping

welcome-file-list

welcome-fileindex.jsp/welcome-file

/welcome-file-list

/web-app

1.3 通過以上代碼,我們已經(jīng)實現(xiàn)了微信公眾平臺開發(fā)的框架,即開通開發(fā)者模式并成功接入、接收消息和發(fā)送消息這三個步驟。

下面就講解其核心部分——解析接收到的xml數(shù)據(jù),并以文本類消息為例,通過圖靈機器人api接口實現(xiàn)智能回復。

2.1 首先看一下整體流程處理代碼,包括:xml數(shù)據(jù)處理、調用圖靈api、封裝返回的xml數(shù)據(jù)。

[java]?view plain?copy

package?demo.process;

import?java.util.Date;

import?demo.entity.ReceiveXmlEntity;

/**

*?微信xml消息處理流程邏輯類

*?@author?pamchen-1

*

*/

public?class?WechatProcess?{

/**

*?解析處理xml、獲取智能回復結果(通過圖靈機器人api接口)

*?@param?xml?接收到的微信數(shù)據(jù)

*?@return??最終的解析結果(xml格式數(shù)據(jù))

*/

public?String?processWechatMag(String?xml){

/**?解析xml數(shù)據(jù)?*/

ReceiveXmlEntity?xmlEntity?=?new?ReceiveXmlProcess().getMsgEntity(xml);

/**?以文本消息為例,調用圖靈機器人api接口,獲取回復內容?*/

String?result?=?"";

if("text".endsWith(xmlEntity.getMsgType())){

result?=?new?TulingApiProcess().getTulingResult(xmlEntity.getContent());

}

/**?此時,如果用戶輸入的是“你好”,在經(jīng)過上面的過程之后,result為“你也好”類似的內容

*??因為最終回復給微信的也是xml格式的數(shù)據(jù),所有需要將其封裝為文本類型返回消息

*?*/

result?=?new?FormatXmlProcess().formatXmlAnswer(xmlEntity.getFromUserName(),?xmlEntity.getToUserName(),?result);

return?result;

}

}

2.2 解析接收到的xml數(shù)據(jù),此處有兩個類,ReceiveXmlEntity.java和ReceiveXmlProcess.java,通過反射的機制動態(tài)調用實體類中的set方法,可以避免很多重復的判斷,提高代碼效率,代碼如下:

[java]?view plain?copy

package?demo.entity;

/**

*?接收到的微信xml實體類

*?@author?pamchen-1

*

*/

public?class?ReceiveXmlEntity?{

private?String?ToUserName="";

private?String?FromUserName="";

private?String?CreateTime="";

private?String?MsgType="";

private?String?MsgId="";

private?String?Event="";

private?String?EventKey="";

private?String?Ticket="";

private?String?Latitude="";

private?String?Longitude="";

private?String?Precision="";

private?String?PicUrl="";

private?String?MediaId="";

private?String?Title="";

private?String?Description="";

private?String?Url="";

private?String?Location_X="";

private?String?Location_Y="";

private?String?Scale="";

private?String?Label="";

private?String?Content="";

private?String?Format="";

private?String?Recognition="";

public?String?getRecognition()?{

return?Recognition;

}

public?void?setRecognition(String?recognition)?{

Recognition?=?recognition;

}

public?String?getFormat()?{

return?Format;

}

public?void?setFormat(String?format)?{

Format?=?format;

}

public?String?getContent()?{

return?Content;

}

public?void?setContent(String?content)?{

Content?=?content;

}

public?String?getLocation_X()?{

return?Location_X;

}

public?void?setLocation_X(String?locationX)?{

Location_X?=?locationX;

}

public?String?getLocation_Y()?{

return?Location_Y;

}

public?void?setLocation_Y(String?locationY)?{

Location_Y?=?locationY;

}

public?String?getScale()?{

return?Scale;

}

public?void?setScale(String?scale)?{

Scale?=?scale;

}

public?String?getLabel()?{

return?Label;

}

public?void?setLabel(String?label)?{

Label?=?label;

}

public?String?getTitle()?{

return?Title;

}

public?void?setTitle(String?title)?{

Title?=?title;

}

public?String?getDescription()?{

return?Description;

}

public?void?setDescription(String?description)?{

Description?=?description;

}

public?String?getUrl()?{

return?Url;

}

public?void?setUrl(String?url)?{

Url?=?url;

}

public?String?getPicUrl()?{

return?PicUrl;

}

public?void?setPicUrl(String?picUrl)?{

PicUrl?=?picUrl;

}

public?String?getMediaId()?{

return?MediaId;

}

public?void?setMediaId(String?mediaId)?{

MediaId?=?mediaId;

}

public?String?getEventKey()?{

return?EventKey;

}

public?void?setEventKey(String?eventKey)?{

EventKey?=?eventKey;

}

public?String?getTicket()?{

return?Ticket;

}

public?void?setTicket(String?ticket)?{

Ticket?=?ticket;

}

public?String?getLatitude()?{

return?Latitude;

}

public?void?setLatitude(String?latitude)?{

Latitude?=?latitude;

}

public?String?getLongitude()?{

return?Longitude;

}

public?void?setLongitude(String?longitude)?{

Longitude?=?longitude;

}

public?String?getPrecision()?{

return?Precision;

}

public?void?setPrecision(String?precision)?{

Precision?=?precision;

}

public?String?getEvent()?{

return?Event;

}

public?void?setEvent(String?event)?{

Event?=?event;

}

public?String?getMsgId()?{

return?MsgId;

}

public?void?setMsgId(String?msgId)?{

MsgId?=?msgId;

}

public?String?getToUserName()?{

return?ToUserName;

}

public?void?setToUserName(String?toUserName)?{

JAVA微信公眾號開發(fā)回復消息能回復多條嗎?具體怎么代碼實現(xiàn)?

public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

// 將請求、響應的編碼均設置為UTF-8(防止中文亂碼)

request.setCharacterEncoding("UTF-8");

response.setCharacterEncoding("UTF-8");

// 接收參數(shù)微信加密簽名、 時間戳、隨機數(shù)

String signature = request.getParameter("signature");

String timestamp = request.getParameter("timestamp");

String nonce = request.getParameter("nonce");

PrintWriter out = response.getWriter();

// 請求校驗

boolean checkSignature = SignUtil.checkSignature(signature, timestamp, nonce);

if (checkSignature) {

// 調用核心服務類接收處理請求

String respXml = processRequest(request);

out.print(respXml);

}

out.close();

out = null;

}

如何使用微信sdk java版

1.首先我們新建一個Java開發(fā)包WeiXinSDK

2.包路徑:com.ansitech.weixin.sdk

測試的前提條件:

假如我的公眾賬號微信號為:vzhanqun

我的服務器地址為:

下面我們需要新建一個URL的請求地址

我們新建一個Servlet來驗證URL的真實性,具體接口參考

接入指南

3.新建com.ansitech.weixin.sdk.WeixinUrlFilter.java

這里我們主要是獲取微信服務器法師的驗證信息,具體驗證代碼如下

[java] view plain copy print?

package com.ansitech.weixin.sdk;

import com.ansitech.weixin.sdk.util.SHA1;

import java.io.IOException;

import java.util.ArrayList;

import java.util.Collections;

import java.util.Comparator;

import java.util.List;

import javax.servlet.Filter;

import javax.servlet.FilterChain;

import javax.servlet.FilterConfig;

import javax.servlet.ServletException;

import javax.servlet.ServletRequest;

import javax.servlet.ServletResponse;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

public class WeixinUrlFilter implements Filter {

//這個Token是給微信開發(fā)者接入時填的

//可以是任意英文字母或數(shù)字,長度為3-32字符

private static String Token = "vzhanqun1234567890";

@Override

public void init(FilterConfig config) throws ServletException {

System.out.println("WeixinUrlFilter啟動成功!");

}

@Override

public void doFilter(ServletRequest req, ServletResponse res,

FilterChain chain) throws IOException, ServletException {

HttpServletRequest request = (HttpServletRequest) req;

HttpServletResponse response = (HttpServletResponse) res;

//微信服務器將發(fā)送GET請求到填寫的URL上,這里需要判定是否為GET請求

boolean isGet = request.getMethod().toLowerCase().equals("get");

System.out.println("獲得微信請求:" + request.getMethod() + " 方式");

if (isGet) {

//驗證URL真實性

String signature = request.getParameter("signature");// 微信加密簽名

String timestamp = request.getParameter("timestamp");// 時間戳

String nonce = request.getParameter("nonce");// 隨機數(shù)

String echostr = request.getParameter("echostr");//隨機字符串

ListString params = new ArrayListString();

params.add(Token);

params.add(timestamp);

params.add(nonce);

//1. 將token、timestamp、nonce三個參數(shù)進行字典序排序

Collections.sort(params, new ComparatorString() {

@Override

public int compare(String o1, String o2) {

return o1.compareTo(o2);

}

});

//2. 將三個參數(shù)字符串拼接成一個字符串進行sha1加密

String temp = SHA1.encode(params.get(0) + params.get(1) + params.get(2));

if (temp.equals(signature)) {

response.getWriter().write(echostr);

}

} else {

//處理接收消息

}

}

@Override

public void destroy() {

}

}

好了,不過這里有個SHA1算法,我這里也把SHA1算法的源碼給貼出來吧!

4.新建com.ansitech.weixin.sdk.util.SHA1.java

[java] view plain copy print?

/*

* 微信公眾平臺(JAVA) SDK

*

* Copyright (c) 2014, Ansitech Network Technology Co.,Ltd All rights reserved.

*

*

* Licensed under the Apache License, Version 2.0 (the "License");

* you may not use this file except in compliance with the License.

* You may obtain a copy of the License at

*

*

*

* Unless required by applicable law or agreed to in writing, software

* distributed under the License is distributed on an "AS IS" BASIS,

* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

* See the License for the specific language governing permissions and

* limitations under the License.

*/

package com.ansitech.weixin.sdk.util;

import java.security.MessageDigest;

/**

* pTitle: SHA1算法/p

*

* @author qsyangyangqisheng274@163.com

*/

public final class SHA1 {

private static final char[] HEX_DIGITS = {'0', '1', '2', '3', '4', '5',

'6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'};

/**

* Takes the raw bytes from the digest and formats them correct.

*

* @param bytes the raw bytes from the digest.

* @return the formatted bytes.

*/

private static String getFormattedText(byte[] bytes) {

int len = bytes.length;

StringBuilder buf = new StringBuilder(len * 2);

// 把密文轉換成十六進制的字符串形式

for (int j = 0; j len; j++) {

buf.append(HEX_DIGITS[(bytes[j] 4) 0x0f]);

buf.append(HEX_DIGITS[bytes[j] 0x0f]);

}

return buf.toString();

}

public static String encode(String str) {

if (str == null) {

return null;

}

try {

MessageDigest messageDigest = MessageDigest.getInstance("SHA1");

messageDigest.update(str.getBytes());

return getFormattedText(messageDigest.digest());

} catch (Exception e) {

throw new RuntimeException(e);

}

}

}

5.把這個Servlet配置到web.xml中

[html] view plain copy print?

filter

description微信消息接入接口/description

filter-nameWeixinUrlFilter/filter-name

filter-classcom.ansitech.weixin.sdk.WeixinUrlFilter/filter-class

/filter

filter-mapping

filter-nameWeixinUrlFilter/filter-name

url-pattern/api/vzhanqun/url-pattern

/filter-mapping

好了,接入的開發(fā)代碼已經(jīng)完成。

6.下面就把地址URL和密鑰Token填入到微信申請成為開發(fā)者模式中吧。

微信開發(fā)平臺中有個接口是上傳多媒體文件,我用的是java 開發(fā)的,我怎么樣才能在后臺實現(xiàn)呢?代碼如下:

/**

*?文件上傳到微信服務器

*?@param?fileType?文件類型

*?@param?filePath?文件路徑

*?@return?JSONObject

*?@throws?Exception

*/

public?static?JSONObject?send(String?fileType,?String?filePath)?throws?Exception?{??

String?result?=?null;??

File?file?=?new?File(filePath);??

if?(!file.exists()?||?!file.isFile())?{??

throw?new?IOException("文件不存在");??

}??

/**?

*?第一部分?

*/??

URL?urlObj?=?new?URL(""+?getAccess_token()?+?"type="+fileType+"");??

HttpURLConnection?con?=?(HttpURLConnection)?urlObj.openConnection();??

con.setRequestMethod("POST");?//?以Post方式提交表單,默認get方式??

con.setDoInput(true);??

con.setDoOutput(true);??

con.setUseCaches(false);?//?post方式不能使用緩存??

//?設置請求頭信息??

con.setRequestProperty("Connection",?"Keep-Alive");??

con.setRequestProperty("Charset",?"UTF-8");??

//?設置邊界??

String?BOUNDARY?=?"----------"?+?System.currentTimeMillis();??

con.setRequestProperty("Content-Type",?"multipart/form-data;?boundary="+?BOUNDARY);??

//?請求正文信息??

//?第一部分:??

StringBuilder?sb?=?new?StringBuilder();??

sb.append("--");?//?必須多兩道線??

sb.append(BOUNDARY);??

sb.append("\r\n");??

sb.append("Content-Disposition:?form-data;name=\"file\";filename=\""+?file.getName()?+?"\"\r\n");??

sb.append("Content-Type:application/octet-stream\r\n\r\n");??

byte[]?head?=?sb.toString().getBytes("utf-8");??

//?獲得輸出流??

OutputStream?out?=?new?DataOutputStream(con.getOutputStream());??

//?輸出表頭??

out.write(head);??

//?文件正文部分??

//?把文件已流文件的方式?推入到url中??

DataInputStream?in?=?new?DataInputStream(new?FileInputStream(file));??

int?bytes?=?0;??

byte[]?bufferOut?=?new?byte[1024];??

while?((bytes?=?in.read(bufferOut))?!=?-1)?{??

out.write(bufferOut,?0,?bytes);??

}??

in.close();??

//?結尾部分??

byte[]?foot?=?("\r\n--"?+?BOUNDARY?+?"--\r\n").getBytes("utf-8");//?定義最后數(shù)據(jù)分隔線??

out.write(foot);??

out.flush();??

out.close();??

StringBuffer?buffer?=?new?StringBuffer();??

BufferedReader?reader?=?null;??

try?{??

//?定義BufferedReader輸入流來讀取URL的響應??

reader?=?new?BufferedReader(new?InputStreamReader(con.getInputStream()));??

String?line?=?null;??

while?((line?=?reader.readLine())?!=?null)?{??

//System.out.println(line);??

buffer.append(line);??

}??

if(result==null){??

result?=?buffer.toString();??

}??

}?catch?(IOException?e)?{??

System.out.println("發(fā)送POST請求出現(xiàn)異常!"?+?e);??

e.printStackTrace();??

throw?new?IOException("數(shù)據(jù)讀取異常");??

}?finally?{??

if(reader!=null){??

reader.close();??

}??

}??

JSONObject?jsonObj?=new?JSONObject(result);??

return?jsonObj;??

}

Java后端小程序微信登錄怎么寫??

其實還蠻簡單的,可以說一搜一大把,下面說下兩種方式。

自行開發(fā)

主要就是通過小程序端直接請求登錄獲取到code(登錄憑證)、如果需要獲取用戶手機號則需要再次授權需要iv和encryptedData,注意這里授權兩次,也可以作為一次處理。

(1) 后端接收到小程序端請求的code,進行解密,可以參考微信小程序開發(fā)文檔,拿到openId和session_key,這一步如果是已經(jīng)注冊的用戶可以直接將后臺分配的token一起組成對象存儲到redis中,期限7-30天皆可,先從redis判定這個openId是否已經(jīng)解析過且已存儲為正式用戶,是則直接返回系統(tǒng)的登錄憑證完成登錄。如果不是就需要走第二步。

(2)通過iv和encryptedData解析獲取用戶的手機號,完成解析后將用戶信息存儲,并一樣存儲到數(shù)據(jù)庫和redis中,返回憑證。

2. 使用已經(jīng)集成好的sdk,使用maven項目直接引入對象的jar即可。

舉個栗子?weixin-java-miniapp 可以看下對應的文檔說明,使用已經(jīng)集成好的方法即可。

求java 微信開發(fā)大神解答下如何響應圖文消息

您好,這樣的:

1)圖文消息的個數(shù)限制為10,也就是圖中ArticleCount的值(圖文消息的個數(shù),限制在10條以內);

2)對于多圖文消息,第一條圖文的圖片顯示為大圖,其他圖文的圖片顯示為小圖;

3)第一條圖文的圖片大小建議為640*320,其他圖文的圖片大小建議為80*80;

下面是實例代碼:

if (msgType.equals(MessageUtil.REQ_MESSAGE_TYPE_TEXT)) {

// 接收用戶發(fā)送的文本消息內容

String content = requestMap.get("Content");

// 創(chuàng)建圖文消息

NewsMessage newsMessage = new NewsMessage();

newsMessage.setToUserName(fromUserName);

newsMessage.setFromUserName(toUserName);

newsMessage.setCreateTime(new Date().getTime());

newsMessage.setMsgType(MessageUtil.RESP_MESSAGE_TYPE_NEWS);

newsMessage.setFuncFlag(0);

ListArticle articleList = new ArrayListArticle();

// 單圖文消息

if ("1".equals(content)) {

Article article = new Article();

article.setTitle("微信公眾帳號開發(fā)教程Java版");

article.setDescription("柳峰,80后,微信公眾帳號開發(fā)經(jīng)驗4個月。為幫助初學者入門,特推出此系列教程,也希望借此機會認識更多同行!");

article.setPicUrl("");

article.setUrl("");

articleList.add(article);

// 設置圖文消息個數(shù)

newsMessage.setArticleCount(articleList.size());

// 設置圖文消息包含的圖文集合

newsMessage.setArticles(articleList);

// 將圖文消息對象轉換成xml字符串

respMessage = MessageUtil.newsMessageToXml(newsMessage);

}

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