其他编程

微信公众平台开发源代码,js微信公众号开发教程

[摘要]本文对微信公众平台开发者模式进行了详细的讲解,并对主要代码进行讲解分析,让初学者尽快上手。本次的教程主要是对微信公众平台开发者模式的讲解,网络上很多类似文章,但很多都让初学微信开发的人一头雾水,所以总结自己的微信开发经验,将微信开发的整个过程系统的列出,并对主要代码进行讲解分析,让初学者尽快上手。

在阅读本文之前,应对微信公众平台的官方开发文档有所了解,知道接收和发送的都是xml格式的数据。另外,在做内容回复时用到了图灵机器人的api接口,这是一个自然语言解析的开放平台,可以帮我们解决整个微信开发过程中最困难的问题,此处不多讲,下面会有其详细的调用方式。

1.1 在登录微信官方平台之后,开启开发者模式,此时需要我们填写url和token,所谓url就是我们自己服务器的接口,用WechatServlet.java来实现,相关解释已经在注释中说明,代码如下:

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 demo.process.WechatProcess;

* 微信服务端收发消息接口

* @author pamchen-1

public class WechatServlet extends HttpServlet {

* The doGet method of the servlet.

* 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”);

/** 读取接收到的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(); //次即为接收到微信端发送过来的xml数据

String result = “”;

/** 判断是否是微信接入激活验证,只有首次接入验证时才会收到echostr参数,此时需要把它直接返回 */

String echostr = request.getParameter(“echostr”);

if (echostr != null && echostr.length() > 1) {

result = echostr;

//正常的微信处理流程

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

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.

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

* @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);

This is the description of my J2EE component

This is the display name of my J2EE component

WechatServlet

demo.servlet.WechatServlet

WechatServlet

/wechat.do

index.jsp

1.3 通过以上代码,我们已经实现了微信公众平台开发的框架,即开通开发者模式并成功接入、接收消息和发送消息这三个步骤。

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