微信公众号开发（1）——服务器配置

桃扇骨 2022-04-01 09:48 282阅读 0赞

第一步，配置Ngrok服务，让本地的服务能够被外网访问，以便我们能够测试使用。

详情见： [Ngrok配置本地服务步骤][Ngrok]

第二步，在微信后台配置相关服务器信息

详情见： [微信公众平台][Link 1]

![20181230095157645.png][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lvbmdidXRpbmd4aWRl_size_16_color_FFFFFF_t_70][]

第三步 ，验证消息的确来自微信服务器

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lvbmdidXRpbmd4aWRl_size_16_color_FFFFFF_t_70 1][]

在项目里面新建WeixinServlet.java

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lvbmdidXRpbmd4aWRl_size_16_color_FFFFFF_t_70 2][]

@Override
    	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();
    		try {
    			if(CheckUtil.checkSignature(signature, timestamp, nonce)) {
    				out.print(echostr);
    			}
    		} catch (Exception e) {
    			// TODO Auto-generated catch block
    			e.printStackTrace();
    		}
    	}

CheckUtil工具类如下：

package com.imooc.util;
    
    import java.security.MessageDigest;
    import java.util.Arrays;
    
    public class CheckUtil {
    
    	private static final String token="imooc";
    	public static boolean checkSignature(String signature,String timestamp,String nonce)throws Exception{
    		String[] arr=new String[] {token,timestamp,nonce	};
    		Arrays.sort(arr);
    		StringBuffer content=new StringBuffer();
    		for(int i=0;i<arr.length;i++) {
    			content.append(arr[i]);
    		}
    		String temp=getSha1(content.toString());
    		return temp.equals(signature);
    	}
    	
    	/**
    	 * sha1加密函数
    	 * @param str
    	 * @return
    	 * @throws Exception
    	 */
    	public static String getSha1(String str) throws Exception { if (null == str || 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[j * 2]; 
    	int k = 0; 
    	for (int i = 0; i < j; i++) 
    	{ 
    		byte byte0 = md[i]; buf[k++] = hexDigits[byte0 >>> 4 & 0xf]; 
    	    buf[k++] = hexDigits[byte0 & 0xf]; 
    	}
    	   return new String(buf); 
    	} catch (Exception e)
    	
    	{ e.printStackTrace(); return null; }
    	
    	}
    
    
    }

web项目的 web.xml文件内容如下：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lvbmdidXRpbmd4aWRl_size_16_color_FFFFFF_t_70 3][]

完成之后，开启Ngrok服务，在微信公众平台开始测试，点击提交按钮后显示提交成功，说明配置和微信服务器对接成功。

[Ngrok]: https://blog.csdn.net/yongbutingxide/article/details/85320961
[Link 1]: https://mp.weixin.qq.com/wiki?t=resource/res_main&id=mp1421135319
[20181230095157645.png]: /images/20220401/42d16b2d8f744fa8ac39c66b1b9792d4.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lvbmdidXRpbmd4aWRl_size_16_color_FFFFFF_t_70]: /images/20220401/cb69341b4cb8409ebd11f2392280ac46.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lvbmdidXRpbmd4aWRl_size_16_color_FFFFFF_t_70 1]: /images/20220401/8094836da0f141a683ceaee374e4301e.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lvbmdidXRpbmd4aWRl_size_16_color_FFFFFF_t_70 2]: /images/20220401/55ffb87dfe3641fc9ed6c71904c70cdf.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lvbmdidXRpbmd4aWRl_size_16_color_FFFFFF_t_70 3]: /images/20220401/e03cceb384214b13b67d1c7df3e12186.png