關於微信平臺的後臺接入,官方已經提供了php示例的下載,對於java這塊後臺接入,暫時還沒有一個完整的案例可以拿來直接使用,我寫了一個java版本的demo便於大家使用。
一、前期準備
項目是用maven構建,直接導入到eclipse即可,jdk的版本爲1.8.0_111 ,這兩項都可以根據實際需求進行修改,最終達成war發佈到服務器中即可。
二、實戰演練
操作前,先閱讀一下官方的文檔,先整體有個思路流程,官方地址如下:
https://mp.weixin.qq.com/wiki/8/f9a0b8382e0b77d87b3bcc1ce6fbc104.html#.E7.AC.AC.E4.B8.80.E6.AD.A5.EF.BC.9A.E5.A1.AB.E5.86.99.E6.9C.8D.E5.8A.A1.E5.99.A8.E9.85.8D.E7.BD.AE
1.設置成開發者模式:
登錄微信公衆平臺後臺後,點「功能」-「高級功能」-「開發模式」,進入開發模式,如果公衆平臺顯示「尚未成爲開發者」,就點擊「成爲開發者」
2.填寫服務器配置:
點「開發」-「基本配置」-「填寫服務器配置」如圖1~如3
圖1
圖2
圖3
3.示例代碼:
SHA1.java
package com.dqiang.demo;
public class SHA1 {
private final int[] abcde = { 0x67452301, 0xefcdab89, 0x98badcfe,
0x10325476, 0xc3d2e1f0 };
// 摘要數據存儲數組
private int[] digestInt = new int[5];
// 計算過程中的臨時數據存儲數組
private int[] tmpData = new int[80];
// 計算sha-1摘要
private int process_input_bytes(byte[] bytedata) {
// 初試化常量
System.arraycopy(abcde, 0, digestInt, 0, abcde.length);
// 格式化輸入字節數組,補10及長度數據
byte[] newbyte = byteArrayFormatData(bytedata);
// 獲取數據摘要計算的數據單元個數
int MCount = newbyte.length / 64;
// 循環對每個數據單元進行摘要計算
for (int pos = 0; pos < MCount; pos++) {
// 將每個單元的數據轉換成16個整型數據,並保存到tmpData的前16個數組元素中
for (int j = 0; j < 16; j++) {
tmpData[j] = byteArrayToInt(newbyte, (pos * 64) + (j * 4));
}
// 摘要計算函數
encrypt();
}
return 20;
}
// 格式化輸入字節數組格式
private byte[] byteArrayFormatData(byte[] bytedata) {
// 補0數量
int zeros = 0;
// 補位後總位數
int size = 0;
// 原始數據長度
int n = bytedata.length;
// 模64後的剩餘位數
int m = n % 64;
// 計算添加0的個數以及添加10後的總長度
if (m < 56) {
zeros = 55 - m;
size = n - m + 64;
} else if (m == 56) {
zeros = 63;
size = n + 8 + 64;
} else {
zeros = 63 - m + 56;
size = (n + 64) - m + 64;
}
// 補位後生成的新數組內容
byte[] newbyte = new byte[size];
// 複製數組的前面部分
System.arraycopy(bytedata, 0, newbyte, 0, n);
// 獲得數組Append數據元素的位置
int l = n;
// 補1操作
newbyte[l++] = (byte) 0x80;
// 補0操作
for (int i = 0; i < zeros; i++) {
newbyte[l++] = (byte) 0x00;
}
// 計算數據長度,補數據長度位共8字節,長整型
long N = (long) n * 8;
byte h8 = (byte) (N & 0xFF);
byte h7 = (byte) ((N >> 8) & 0xFF);
byte h6 = (byte) ((N >> 16) & 0xFF);
byte h5 = (byte) ((N >> 24) & 0xFF);
byte h4 = (byte) ((N >> 32) & 0xFF);
byte h3 = (byte) ((N >> 40) & 0xFF);
byte h2 = (byte) ((N >> 48) & 0xFF);
byte h1 = (byte) (N >> 56);
newbyte[l++] = h1;
newbyte[l++] = h2;
newbyte[l++] = h3;
newbyte[l++] = h4;
newbyte[l++] = h5;
newbyte[l++] = h6;
newbyte[l++] = h7;
newbyte[l++] = h8;
return newbyte;
}
private int f1(int x, int y, int z) {
return (x & y) | (~x & z);
}
private int f2(int x, int y, int z) {
return x ^ y ^ z;
}
private int f3(int x, int y, int z) {
return (x & y) | (x & z) | (y & z);
}
private int f4(int x, int y) {
return (x << y) | x >>> (32 - y);
}
// 單元摘要計算函數
private void encrypt() {
for (int i = 16; i <= 79; i++) {
tmpData[i] = f4(tmpData[i - 3] ^ tmpData[i - 8] ^ tmpData[i - 14]
^ tmpData[i - 16], 1);
}
int[] tmpabcde = new int[5];
for (int i1 = 0; i1 < tmpabcde.length; i1++) {
tmpabcde[i1] = digestInt[i1];
}
for (int j = 0; j <= 19; j++) {
int tmp = f4(tmpabcde[0], 5)
+ f1(tmpabcde[1], tmpabcde[2], tmpabcde[3]) + tmpabcde[4]
+ tmpData[j] + 0x5a827999;
tmpabcde[4] = tmpabcde[3];
tmpabcde[3] = tmpabcde[2];
tmpabcde[2] = f4(tmpabcde[1], 30);
tmpabcde[1] = tmpabcde[0];
tmpabcde[0] = tmp;
}
for (int k = 20; k <= 39; k++) {
int tmp = f4(tmpabcde[0], 5)
+ f2(tmpabcde[1], tmpabcde[2], tmpabcde[3]) + tmpabcde[4]
+ tmpData[k] + 0x6ed9eba1;
tmpabcde[4] = tmpabcde[3];
tmpabcde[3] = tmpabcde[2];
tmpabcde[2] = f4(tmpabcde[1], 30);
tmpabcde[1] = tmpabcde[0];
tmpabcde[0] = tmp;
}
for (int l = 40; l <= 59; l++) {
int tmp = f4(tmpabcde[0], 5)
+ f3(tmpabcde[1], tmpabcde[2], tmpabcde[3]) + tmpabcde[4]
+ tmpData[l] + 0x8f1bbcdc;
tmpabcde[4] = tmpabcde[3];
tmpabcde[3] = tmpabcde[2];
tmpabcde[2] = f4(tmpabcde[1], 30);
tmpabcde[1] = tmpabcde[0];
tmpabcde[0] = tmp;
}
for (int m = 60; m <= 79; m++) {
int tmp = f4(tmpabcde[0], 5)
+ f2(tmpabcde[1], tmpabcde[2], tmpabcde[3]) + tmpabcde[4]
+ tmpData[m] + 0xca62c1d6;
tmpabcde[4] = tmpabcde[3];
tmpabcde[3] = tmpabcde[2];
tmpabcde[2] = f4(tmpabcde[1], 30);
tmpabcde[1] = tmpabcde[0];
tmpabcde[0] = tmp;
}
for (int i2 = 0; i2 < tmpabcde.length; i2++) {
digestInt[i2] = digestInt[i2] + tmpabcde[i2];
}
for (int n = 0; n < tmpData.length; n++) {
tmpData[n] = 0;
}
}
// 4字節數組轉換爲整數
private int byteArrayToInt(byte[] bytedata, int i) {
return ((bytedata[i] & 0xff) << 24) | ((bytedata[i + 1] & 0xff) << 16)
| ((bytedata[i + 2] & 0xff) << 8) | (bytedata[i + 3] & 0xff);
}
// 整數轉換爲4字節數組
private void intToByteArray(int intValue, byte[] byteData, int i) {
byteData[i] = (byte) (intValue >>> 24);
byteData[i + 1] = (byte) (intValue >>> 16);
byteData[i + 2] = (byte) (intValue >>> 8);
byteData[i + 3] = (byte) intValue;
}
// 將字節轉換爲十六進制字符串
private static String byteToHexString(byte ib) {
char[] Digit = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A',
'B', 'C', 'D', 'E', 'F' };
char[] ob = new char[2];
ob[0] = Digit[(ib >>> 4) & 0X0F];
ob[1] = Digit[ib & 0X0F];
String s = new String(ob);
return s;
}
// 將字節數組轉換爲十六進制字符串
private static String byteArrayToHexString(byte[] bytearray) {
String strDigest = "";
for (int i = 0; i < bytearray.length; i++) {
strDigest += byteToHexString(bytearray[i]);
}
return strDigest;
}
// 計算sha-1摘要,返回相應的字節數組
public byte[] getDigestOfBytes(byte[] byteData) {
process_input_bytes(byteData);
byte[] digest = new byte[20];
for (int i = 0; i < digestInt.length; i++) {
intToByteArray(digestInt[i], digest, i * 4);
}
return digest;
}
// 計算sha-1摘要,返回相應的十六進制字符串
public String getDigestOfString(byte[] byteData) {
return byteArrayToHexString(getDigestOfBytes(byteData));
}
public static void main(String[] args) {
String data = "tokenDemo";
System.out.println(data);
String digest = new SHA1().getDigestOfString(data.getBytes());
System.out.println(digest);
}
}
weChatJavaTokenValidate.java
package com.dqiang.demo;
import java.io.IOException;
import java.util.Arrays;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* @author StemQ
* @version v1.0
* Blog:http://blog.csdn.net/stemq
* Web:www.dqiang.com
*/
public class weChatJavaTokenValidate extends HttpServlet {
private static final long serialVersionUID = -6761982938477193120L;
/* 例如
* URL(服務器地址) http://weixin.xxxx.com/weChatJavaTokenValidate/wechatToken
* Token(令牌) tokenChat
* */
private String TOKEN = "tokenChat"; //根據實際情況自己定義token與基本配置/填寫服務器配置Token(令牌)相同
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// 微信加密簽名
String signature = request.getParameter("signature");
// 隨機字符串
String echostr = request.getParameter("echostr");
// 時間戳
String timestamp = request.getParameter("timestamp");
// 隨機數
String nonce = request.getParameter("nonce");
String[] str = { TOKEN, timestamp, nonce };
// 字典序排序
Arrays.sort(str);
String bigStr = str[0] + str[1] + str[2];
// SHA1加密
String digest = new SHA1().getDigestOfString(bigStr.getBytes()).toLowerCase();
// 確認請求來至微信
if (digest.equals(signature)) {
response.getWriter().print(echostr);
}
}
}
3.源碼下載:
https://github.com/StemQ/weChatJavaTokenValidate