學習視頻網址：嗶哩嗶哩網站?微信公眾號開發-Java版

【P01-P02】微信公眾號Java開發-筆記01【微信公眾號介紹、開發環境搭建】

【P03-P04】微信公眾號Java開發-筆記02【開發接入準備、開發接入】

【P00-P00】微信公眾號Java開發-筆記03【】

【P00-P00】微信公眾號Java開發-筆記04【】

【P00-P00】微信公眾號Java開發-筆記05【】

目錄

P3 1.3 開發接入準備 19:08

基本配置

服務號 開發文檔

接口測試號申請

接入指南

接口配置測試

servlet代碼

URL配置

P4 1.4 開發接入 20:25

sha1加密

驗證簽名、接入成功截圖

WxServlet.java

WxService.java

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P3 1.3 開發接入準備 19:08

基本配置

自己注冊的公眾號，很多權限都沒有！

服務號 開發文檔

微信公眾開發平臺：https://mp.weixin.qq.com/

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接口測試號申請

接入指南

接口配置測試

servlet代碼

未經修改的servlet代碼：

package servlet;import java.io.IOException; import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse;/*** Servlet implementation class WxServlet*/ @WebServlet("/wx") public class WxServlet extends HttpServlet {private static final long serialVersionUID = 1L;/*** @see HttpServlet#HttpServlet()*/public WxServlet() {super();// TODO Auto-generated constructor stub}/*** @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)*/protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {// TODO Auto-generated method stubresponse.getWriter().append("Served at: ").append(request.getContextPath());}/*** @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)*/protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {// TODO Auto-generated method stubdoGet(request, response);}}

URL配置

package servlet;import java.io.IOException; import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse;@WebServlet("/wx") public class WxServlet extends HttpServlet {private static final long serialVersionUID = 1L;protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {/*** signature 微信加密簽名，signature結合了開發者填寫的token參數和請求中的timestamp參數、nonce參數。timestamp 時間戳nonce 隨機數echostr 隨機字符串*/String signature = request.getParameter("signature");String timestamp = request.getParameter("timestamp");String nonce = request.getParameter("nonce");String echostr = request.getParameter("echostr");System.out.println(signature);System.out.println(timestamp);System.out.println(nonce);System.out.println(echostr);}protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {System.out.println("post");}}

P4 1.4 開發接入 20:25

sha1加密

SHA-1——百度百科

SHA-1（英語：Secure Hash Algorithm 1，中文名：安全散列算法1）是一種密碼散列函數，美國國家安全局設計，并由美國國家標準技術研究所（NIST）發布為聯邦數據處理標準（FIPS）。SHA-1可以生成一個被稱為消息摘要的160位（20字節）散列值，散列值通常的呈現形式為40個十六進制數。

驗證簽名、接入成功截圖

WxServlet.java

package servlet;import java.io.IOException; import java.io.PrintWriter;import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse;import service.WxService;@WebServlet("/wx") public class WxServlet extends HttpServlet {private static final long serialVersionUID = 1L;protected void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {/*** signature 微信加密簽名，signature結合了開發者填寫的token參數和請求中的timestamp參數、nonce參數。 * timestamp 時間戳 * nonce 隨機數 * echostr 隨機字符串*/String signature = request.getParameter("signature");String timestamp = request.getParameter("timestamp");String nonce = request.getParameter("nonce");String echostr = request.getParameter("echostr");System.out.println(signature);System.out.println(timestamp);System.out.println(nonce);System.out.println(echostr);// 校驗簽名if (WxService.check(timestamp, nonce, signature)) {System.out.println("接入成功！");PrintWriter out = response.getWriter();// 原樣返回echostr參數out.print(echostr);out.flush();out.close();} else {System.out.println("接入失敗！");}}protected void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {System.out.println("post");}}

WxService.java

package service;import java.security.MessageDigest; import java.security.NoSuchAlgorithmException; import java.util.Arrays;public class WxService {private static final String TOKEN = "llzs";/*** 驗證簽名* @param timestamp* @param nonce* @param signature* @return*/public static boolean check(String timestamp, String nonce, String signature) {// 1）將token、timestamp、nonce三個參數進行字典序排序String[] strs = new String[] { TOKEN, timestamp, nonce };Arrays.sort(strs);// 2）將三個參數字符串拼接成一個字符串進行sha1加密String str = strs[0] + strs[1] + strs[2];String mysig = sha1(str);// 3）開發者獲得加密后的字符串可與signature對比，標識該請求來源于微信return mysig.equalsIgnoreCase(signature); // 進行字符串比對}/*** 進行sha1加密* * @param str* @return*/private static String sha1(String src) {try {// 獲取一個加密對象MessageDigest md = MessageDigest.getInstance("sha1"); // 獲取加密對象// 加密byte[] digest = md.digest(src.getBytes());char[] chars = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };StringBuilder sb = new StringBuilder();// 處理加密結果for (byte b : digest) {sb.append(chars[(b >> 4) & 15]);sb.append(chars[b & 15]);}return sb.toString();} catch (NoSuchAlgorithmException e) {e.printStackTrace();}return null;}}

將啼饑者比，則得飽自樂；

將號寒者比，則得暖自樂；

將勞役者比，則優閑自樂；

將疾病者比，則康健自樂；

將禍患者比，則平安自樂；

將死亡者比，則生存自樂。

總結

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