Java 微信公众号开发
<h3 id="微信公众号开发开发模式-java">微信公众号开发（开发模式-Java）</h3><h4 id="环境搭建">环境搭建</h4>
<blockquote>
<ul>
<li>微信公众号申请步骤<br>
https://kf.qq.com/faq/120911VrYVrA151009eIrYvy.html</li>
<li>微信公众号与后台调通<br>
java后台搭建<br>
1.创建Dynamic Web Project<br>
2.创建类WechatServlet继承HttpServlet</li>
</ul>
</blockquote>
<pre><code class="language-java">//主要重写doGet方法
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
String signature = req.getParameter("signature");
String timestamp = req.getParameter("timestamp");
String nonce = req.getParameter("nonce");
String echostr = req.getParameter("echostr");
PrintWriter out = resp.getWriter();
if (CheckUtil.checkSignature(signature, timestamp, nonce)) {
out.print(echostr);
}
}
</code></pre>
<pre><code class="language-java">//工具类CheckUtil
//定义TOKEN 此处命名随意（后续会用到，一致即可）
private static final String TOKEN = "miya";
public static Boolean checkSignature(String signature, String timestamp, String nonce) {
String array[] = new String[] {TOKEN, timestamp, nonce };
//排序
Arrays.sort(array);
//生成字符串
StringBuffer content = new StringBuffer();
for (int i=0;i<array.length;i++) {
content.append(array);
}
//sha1加密
String tempStr = getSha1(content.toString());
//返回比较结果
return tempStr.equals(signature);
}
public static String getSha1(String str){
if(str==null||str.length()==0){
return null;
}
char hexDigits[] = {'0','1','2','3','4','5','6','7','8','9',
'a','b','c','d','e','f'};
try {
MessageDigest mdTemp = MessageDigest.getInstance("SHA1");
mdTemp.update(str.getBytes("UTF-8"));
byte[] md = mdTemp.digest();
int j = md.length;
char buf[] = new char;
int k = 0;
for (int i = 0; i < j; i++) {
byte byte0 = md;
buf = hexDigits;
buf = hexDigits;
}
return new String(buf);
} catch (Exception e) {
return null;
}
}
</code></pre>
<pre><code class="language-xml">web.xml 配置
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" metadata-complete="false" version="3.0">
<display-name>
</display-name>
<servlet>
<servlet-name>wechatServlet</servlet-name>
<servlet-class>com.miya.wechat.base.WechatServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>wechatServlet</servlet-name>
<url-pattern>/wechat.do</url-pattern>
/* 名称随意，后续一致即可*/
</servlet-mapping>
</web-app>
</code></pre>
<p>项目结构：<br>
uploading-image-431716.png</p>
<p>现在即可运行项目。</p>
<blockquote>
<ul>
<li>配置微信公众平台开发模式配置<br>
服务器地址：<br>
若本地测试则 ip+端口号+项目名称+url<br>
url的配置实在web.xml里面的（名称可随意）<br>
uploading-image-950650.png</li>
</ul>
</blockquote>
<blockquote>
<ul>
<li>下载内网穿刺工具<br>
有很多，我用的是ngork<br>
同样访问成功</li>
</ul>
</blockquote>
</div>
<div id="MySignature" role="contentinfo">
❀❀ (ง •_•)ง little little 🦆🦆 ❀❀❀❀♕♕♕♕♕<br><br>
来源：https://www.cnblogs.com/VVII/p/10507783.html
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