springboot连接微信公众号服务以及给前端签名

首先阅读文档
1、这个是什么意思呢，就是需要判断这个东西是不是来自于微信的，所以你需要填写你的请求的url和token（也就是密码，可以自定义的）

2、但是你保存配置肯定是失败的，因为你还需要写一个专门的请求给微信（注明是get请求），这个文档不适合我这种拿来主义的人阅读

java

//根据自己的习惯，我习惯是当工具类调用
import java.security.MessageDigest;
import java.util.Arrays;public class WxUtils {private static final  String Token="123456";private static final char[] HEX_DIGITS = {'0', '1', '2', '3', '4', '5','6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'};public static boolean CheckSignature(String signature, String timestamp, String nonce) {//       1）将token、timestamp、nonce三个参数进行字典序排序
//      2）将三个参数字符串拼接成一个字符串进行sha1加密
//      3）开发者获得加密后的字符串可与signature对比，标识该请求来源于微信String[] strs=new String[]{Token,timestamp,nonce};Arrays.sort(strs);String str=strs[0]+strs[1]+strs[2];String mysignature=sha1(str);return mysignature.equals(signature);}private static String sha1(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);}}private static String getFormattedText(byte[] bytes) {int len = bytes.length;StringBuilder buf = new StringBuilder(len * 2);// 把密文转换成十六进制的字符串形式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();}
}

随机字段的工具类

 /*** 获取随机字符串** @param len   长度* @param type  类型（0=数字 1=小写字母 2=大写字母 3=大写字母＋数字 4=大小写字母＋数字 5=UUID）* @return String*/public static String getRandomString(int type, int len) {StringBuilder sb = new StringBuilder();StringBuffer buffer = null;switch (type) {case 0:buffer = new StringBuffer("0123456789");break;case 1:buffer = new StringBuffer("abcdefghijklmnopqrstuvwxyz");break;case 2:buffer = new StringBuffer("ABCDEFGHIJKLMNOPQRSTUVWXYZ");break;case 3:buffer = new StringBuffer("0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ");break;case 4:buffer = new StringBuffer("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789");break;case 5:buffer = new StringBuffer("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789");String s = UUID.randomUUID().toString();sb = new StringBuilder(s);}if (StringUtils.isEmpty(buffer)) {return null;}if (sb.length() > len) {return sb.substring(0, len);}Random random = new Random();random.setSeed(new Date().getTime());int range = buffer.length();for (int i = 0; i < len; i++) {sb.append(buffer.charAt(random.nextInt(range)));}return sb.toString();}

json的工具类

package org.xing.wx.utils;import com.google.gson.Gson;
import com.google.gson.GsonBuilder;public class JsonUtils {public static String toJson(Object obj) {Gson gson = new GsonBuilder().setPrettyPrinting().create();return gson.toJson(obj);}
}

config配置类信息

package org.xing.wx.config;import org.springframework.context.annotation.Configuration;
import org.xing.wx.utils.JsonUtils;
import lombok.Data;
import org.springframework.boot.context.properties.ConfigurationProperties;
import java.util.List;@Data
@Configuration
@ConfigurationProperties(prefix = "wx.mp")
public class WxMpProperties {private List<MpConfig> configs;@Datapublic static class MpConfig {/*** 设置微信公众号的appid*/private String appId;/*** 设置微信公众号的app secret*/private String secret;/*** 设置微信公众号的token*/private String token;/*** 设置微信公众号的EncodingAESKey*/private String aesKey;}@Overridepublic String toString() {return JsonUtils.toJson(this);}
}

RestTemplate的配置

package org.xing.constant.config;import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.client.ClientHttpRequestFactory;
import org.springframework.http.client.SimpleClientHttpRequestFactory;
import org.springframework.web.client.RestTemplate;@Configuration
public class RestTemplateConfig {@Beanpublic RestTemplate restTemplate(ClientHttpRequestFactory factory) {return new RestTemplate(factory);}@Beanpublic ClientHttpRequestFactory simpleClientHttpRequestFactory() {SimpleClientHttpRequestFactory factory = new SimpleClientHttpRequestFactory();factory.setReadTimeout(5000);factory.setConnectTimeout(5000);return factory;}
}

yml配置类信息

然后就是pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>2.1.7.RELEASE</version><relativePath/> <!-- lookup parent from repository --></parent><groupId>org.xing</groupId><artifactId>xing_Warehouse</artifactId><version>1.0-SNAPSHOT</version><properties><weixin-java-mp.version>3.5.0</weixin-java-mp.version><maven.compiler.source>1.8</maven.compiler.source><maven.compiler.target>1.8</maven.compiler.target><maven.compiler.encoding>UTF-8</maven.compiler.encoding><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding><project.build.locales>zh_CN</project.build.locales><java.version>1.8</java.version><skipTests>true</skipTests></properties><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId><exclusions><exclusion><groupId>com.fasterxml.jackson.core</groupId><artifactId>jackson-databind</artifactId></exclusion></exclusions></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-data-jpa</artifactId></dependency><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><scope>runtime</scope></dependency><dependency><groupId>commons-io</groupId><artifactId>commons-io</artifactId><version>2.2</version></dependency><dependency><groupId>commons-fileupload</groupId><artifactId>commons-fileupload</artifactId><version>1.3.3</version></dependency><dependency><groupId>com.alibaba</groupId><artifactId>fastjson</artifactId><version>1.2.13</version></dependency><dependency><groupId>com.google.zxing</groupId><artifactId>core</artifactId><version>3.2.1</version></dependency><dependency><groupId>com.google.zxing</groupId><artifactId>javase</artifactId><version>3.2.1</version></dependency><dependency><groupId>com.github.binarywang</groupId><artifactId>weixin-java-mp</artifactId><version>${weixin-java-mp.version}</version></dependency><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId><scope>provided</scope></dependency><!--<dependency>--><!--<groupId>redis.clients</groupId>--><!--<artifactId>jedis</artifactId>--><!--<version>2.9.0</version>--><!--</dependency>--><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-configuration-processor</artifactId><optional>true</optional></dependency><dependency><groupId>org.xing.framework</groupId><artifactId>xing-core</artifactId><version>0.0.1</version></dependency><dependency><groupId>org.springframework.data</groupId><artifactId>spring-data-redis</artifactId><version>2.1.3.RELEASE</version></dependency><dependency><groupId>redis.clients</groupId><artifactId>jedis</artifactId><version>2.9.0</version></dependency></dependencies><build><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId></plugin></plugins></build></project>

这个是控制类，关于微信的全部在这里完结*

package org.xing.controller;import com.alibaba.fastjson.JSONObject;
import org.apache.commons.codec.digest.DigestUtils;
import org.apache.logging.log4j.util.Strings;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.ValueOperations;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;
import org.xing.framework.core.utils.CommonUtils;
import org.xing.system.vo.Result;
import org.xing.system.vo.ResultUtils;
import org.xing.wx.config.WxMpProperties;
import org.xing.wx.utils.WxUtils;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.concurrent.TimeUnit;@RestController
@RequestMapping("/wx")
public class WeixinController {private final RestTemplate restTemplate;private final WxMpProperties wxMpProperties;private final RedisTemplate redisTemplate;@Autowiredpublic WeixinController(RestTemplate restTemplate, WxMpProperties wxMpProperties, RedisTemplate redisTemplate) {this.restTemplate = restTemplate;this.wxMpProperties = wxMpProperties;this.redisTemplate = redisTemplate;}
//来自服务端的验证(url为：http://jdmsrw.natappfree.cc/xing_Warehouse/wx/checkSignature)@RequestMapping("checkSignature")public void checkSignature(HttpServletRequest request, HttpServletResponse response)throws Exception{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);boolean checkSignature = WxUtils.CheckSignature(signature,timestamp,nonce);if (checkSignature) {System.out.println("success");//PrintWriter writer = response.getWriter();writer.print(echostr);writer.flush();writer.close();}else {System.out.println("failed");}}@RequestMapping("/wechatParam")public Result getWXConfigSignature(String url) {WxMpProperties.MpConfig config = wxMpProperties.getConfigs().get(0);long timeStampSec = System.currentTimeMillis() / 1000;String timestamp = String.format("%010d", timeStampSec);//随机字段String nonceStr = CommonUtils.getRandomString(4,16);//System.out.println("------------------------------------------------");String[] urls = url.split("#");String newUrl = urls[0];//logger.info("随机串："+nonceStr+", 获取签名URL: " + newUrl);JSONObject respJson = new JSONObject();String wxJsapiTicket = getWXJsapiTicket(config.getAppId(), config.getSecret());String[] signArr = new String[]{"url=" + newUrl, "jsapi_ticket=" + wxJsapiTicket, "noncestr=" + nonceStr, "timestamp=" + timestamp};Arrays.sort(signArr);String signStr = String.join("&", signArr);String resSign = DigestUtils.sha1Hex(signStr);//logger.info("返回的签名：" + resSign);respJson.put("appId", config.getAppId());respJson.put("timestamp", timestamp);respJson.put("nonceStr", nonceStr);respJson.put("signature", resSign);respJson.put("url", url);System.out.println("appId"+"---"+config.getAppId());System.out.println("timestamp"+"---"+timestamp);System.out.println("nonceStr"+"---"+nonceStr);System.out.println("wxJsapiTicket"+"---"+wxJsapiTicket);System.out.println("signature"+"---"+resSign);System.out.println("url"+"---"+url);System.out.println("signArr"+"---"+signArr.toString());return ResultUtils.success(respJson);}private String getWXJsapiTicket(String appid, String secret) {ValueOperations valueOperations = redisTemplate.opsForValue();String ticket = (String) valueOperations.get(appid);if (Strings.isBlank(ticket)) {String url = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?access_token=" + getWXaccessToken(appid,secret) + "&type=jsapi";String resp = restTemplate.getForObject(url, String.class);JSONObject resJson = JSONObject.parseObject(resp);valueOperations.set(appid, resJson.getString("ticket"), 2, TimeUnit.HOURS);return resJson.getString("ticket");}return ticket;}private String getWXaccessToken(String appid, String secret) {String url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=" + appid + "&secret=" + secret;String resp = restTemplate.getForObject(url, String.class);JSONObject resJson = JSONObject.parseObject(resp);return resJson.getString("access_token");}
}

结构图

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