Java 微信公众号开发(一)介入微信

开发微信公众号在没有正式的公众平台账号时,我们可以使用测试平台账号———

测试平台申请地址:https://mp.weixin.qq.com/debug/cgi-bin/sandbox?t=sandbox/login

进入之后我们会看见 此时 appID、appsecret都有了,url是我们成为开发者与微信进行的一次握手配置(url其实就是我们项目中你controller的访问地址,token是我们自己填写的,可在后台进行判断的),这里的url可以用ngrok来做映射,这样开发起来比较方便,ngrok配置(点击查看)ngrok下载地址(点击下载)

我们可以在开发者文档中看见

这里查看详细配置;期间我们要说道微信会给我们的url通过get方式传递4个参数

下面我们来看一下controller怎么编写

package com.website.wechat.controller;

import java.io.IOException;
import java.security.MessageDigest;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;

@Controller
@RequestMapping(value=“weixin”)
public class WeiXinController {

扫描二维码关注公众号,回复: 3466822 查看本文章
private static final char[] HEX_DIGITS = { '0', '1', '2', '3', '4', '5',
	'6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };

@RequestMapping(value="getWeiXinMethod",method=RequestMethod.GET)
@ResponseBody
public void getWeiXinMethod(HttpServletRequest request, HttpServletResponse response) throws IOException{
	boolean validate = validate(request);
	if (validate) {
		response.getWriter().write(request.getParameter("echostr"));
		response.getWriter().close();
	}
	
}

private boolean validate(HttpServletRequest req) throws IOException {
	String signature = req.getParameter("signature");//微信加密签名
	String timestamp = req.getParameter("timestamp");//时间戳
	String nonce = req.getParameter("nonce");//随机数
	List<String> list = new ArrayList<String>();
	list.add("chenchen");
	list.add(timestamp);
	list.add(nonce);
	Collections.sort(list);//字典排序
	String s = "";
	for (int i = 0; i < list.size(); i++) {
		s += (String) list.get(i);
	}
	if (encode("SHA1", s).equalsIgnoreCase(signature)) {
		return true;
	} else {
		return false;
	}
}

public static String encode(String algorithm, String str) {
	if (str == null) {
		return null;
	}
	try {
		//Java自带的加密类
		MessageDigest messageDigest = MessageDigest.getInstance(algorithm);
		//转为byte
		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();
}

}
此时验证和调用已经没问题,成功介入微信,成为一名开发者

猜你喜欢

转载自blog.csdn.net/qq_16324421/article/details/82953615