很高興大家繼續我們的微信開發，相信大家已經迫不及待了吧！
下面直入正題！
首先如果你已經看過微信的公衆平臺開發文檔，如果沒看過建議還是先看一下
http://mp.weixin.qq.com/wiki/index.php?title=首頁
如果你已經註冊了訂閱號或者服務號，那麼你在高級功能，開發者模式 申請成爲開發者裏會讓你填寫
好了，我們就從這裏開始吧！
操作步驟我按順序標記了，其他的爲輔助說明。
1.首先我們新建一個Java開發包WeiXinSDK
2.包路徑：com.ansitech.weixin.sdk
測試的前提條件：
假如我的公衆賬號微信號爲：vzhanqun
我的服務器地址爲：http://www.vzhanqun.com/
下面我們需要新建一個URL的請求地址
我們新建一個Servlet來驗證URL的真實性，具體接口參考
http://mp.weixin.qq.com/wiki/index.php?title=接入指南
3.新建com.ansitech.weixin.sdk.WeixinUrlFilter.java
這裏我們主要是獲取微信服務器法師的驗證信息，具體驗證代碼如下
package com.ansitech.weixin.sdk;
import com.ansitech.weixin.sdk.util.SHA1;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class WeixinUrlFilter implements Filter {
//這個Token是給微信開發者接入時填的
//可以是任意英文字母或數字，長度爲3-32字符
private static String Token = "vzhanqun1234567890";
@Override
public void init(FilterConfig config) throws ServletException {
System.out.println("WeixinUrlFilter啓動成功!");
}
@Override
public void doFilter(ServletRequest req, ServletResponse res,
FilterChain chain) throws IOException, ServletException {
HttpServletRequest request = (HttpServletRequest) req;
HttpServletResponse response = (HttpServletResponse) res;
//微信服務器將發送GET請求到填寫的URL上,這裏需要判定是否爲GET請求
boolean isGet = request.getMethod().toLowerCase().equals("get");
System.out.println("獲得微信請求:" + request.getMethod() + " 方式");
if (isGet) {
//驗證URL真實性
String signature = request.getParameter("signature");// 微信加密簽名
String timestamp = request.getParameter("timestamp");// 時間戳
String nonce = request.getParameter("nonce");// 隨機數
String echostr = request.getParameter("echostr");//隨機字符串
List<String> params = new ArrayList<String>();
params.add(Token);
params.add(timestamp);
params.add(nonce);
//1. 將token、timestamp、nonce三個參數進行字典序排序
Collections.sort(params, new Comparator<String>() {
@Override
public int compare(String o1, String o2) {
return o1.compareTo(o2);
}
});
//2. 將三個參數字符串拼接成一個字符串進行sha1加密
String temp = SHA1.encode(params.get(0) + params.get(1) + params.get(2));
if (temp.equals(signature)) {
response.getWriter().write(echostr);
}
} else {
//處理接收消息
}
}
@Override
public void destroy() {
}
}
4.新建com.ansitech.weixin.sdk.util.SHA1.java
/*
* 微信公衆平臺(JAVA) SDK
*
* Copyright (c) 2014, Ansitech Network Technology Co.,Ltd All rights reserved.
* http://www.ansitech.com/weixin/sdk/
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.ansitech.weixin.sdk.util;
import java.security.MessageDigest;
/**
* <p>Title: SHA1算法</p>
*
* @author qsyang<[email protected]>
*/
public final class SHA1 {
private static final char[] HEX_DIGITS = {'0', '1', '2', '3', '4', '5',
'6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'};
/**
* Takes the raw bytes from the digest and formats them correct.
*
* @param bytes the raw bytes from the digest.
* @return the formatted bytes.
*/
private static String getFormattedText(byte[] bytes) {
int len = bytes.length;
StringBuilder buf = new StringBuilder(len * 2);
// 把密文轉換成十六進制的字符串形式
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();
}
public static String encode(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);
}
}
}
<filter>
<description>微信消息接入接口</description>
<filter-name>WeixinUrlFilter</filter-name>
<filter-class>com.ansitech.weixin.sdk.WeixinUrlFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>WeixinUrlFilter</filter-name>
<url-pattern>/api/vzhanqun</url-pattern>
</filter-mapping>6.下面就把地址URL和密鑰Token填入到微信申請成爲開發者模式中吧。
URL:http://www.vzhanqun.com/api/vzhanqun
Token:vzhanqun1234567890
假如你服務已經啓動了，那麼應該驗證成功，成爲開發者了。
如有疑問，請留言。
你可以微信關注我的訂閱號：vzhanqun 微站管家
更多相關內容請移步：http://www.weixin4j.org
