微信公众号
个人只能申请订阅号，需要客户申请服务号进行开发
1.启用服务器配置
2.配置服务器地址，格式：http://域名/WeiXinServlet；
本地项目测试时，因为服务器地址需要域名，所以需要内网穿透，如图：
3.配置令牌（和上面配置的服务器地址的访问类里的TOKEN一样）；
4.配置白名单，将服务器ip加入白名单(在IP白名单内的IP地址作为来源，获取access_token接口才可调用成功)；
5.开发-接口权限：开通网页授权权限（自定义菜单链接跳转项目相关页面），需配置项目所在服务器域名：http://服务器域名
验证来自微信服务器和微信服务器的消息处理类
package com.*.*.util;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Arrays;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.lang.StringUtils;
import org.jdom.JDOMException;
import com.*.*.WeiXinService;
public class WeiXinServlet extends HttpServlet {
private String TOKEN = "和微信公众号服务器配置下的Token需要一样";
@Override
public void init() throws ServletException {
super.init();
}
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
// 校验signature
checkSignature(req, resp);
}
protected void checkSignature(HttpServletRequest req, HttpServletResponse resp) throws IOException{
// 微信加密签名
String signature = filterNull(req.getParameter("signature"));
// 随机字符串
String echostr = filterNull(req.getParameter("echostr"));
// 时间戳
String timestamp = filterNull(req.getParameter("timestamp"));
// 随机数
String nonce = filterNull(req.getParameter("nonce"));
String[] str = { TOKEN, timestamp, nonce };
Arrays.sort(str); // 字典序排序
String bigStr = str[0] + str[1] + str[2];
// 工具类进行SHA1加密
String digest = new SHA1().getDigestOfString(bigStr.getBytes())
.toLowerCase();
PrintWriter out = resp.getWriter();
// 确认请求来至微信
if (digest.equals(signature)) {
out.print(echostr);
}
out.close();
out = null;
}
/**
* 微信用户向公众账号发信息都是post请求
*/
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setCharacterEncoding("UTF-8");
request.setCharacterEncoding("UTF-8");
PrintWriter out = response.getWriter();
try {
//调用核心业务类型接受消息、处理消息。向用户回复消息
String respMessage = WeiXinService.processRequest(request);
out.print(respMessage);
} catch (JDOMException e) {
out.print("");
}
out.flush();
out.close();
}
public String filterNull(String str){
if(StringUtils.isBlank(str)){
return "";
}else{
return str;
}
}
}
SHA1加密工具类
package com.*.*.util;
import java.io.UnsupportedEncodingException;
import java.math.BigInteger;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
public class SHA1 {
private final int[] abcde = { 0x67452301, 0xefcdab89, 0x98badcfe,
0x10325476, 0xc3d2e1f0 };
// 摘要数据存储数组
private int[] digestInt = new int[5];
// 计算过程中的临时数据存储数组
private int[] tmpData = new int[80];
/**
* 计算sha-1摘要
*
* @param bytedata
* @return
*/
private int process_input_bytes(byte[] bytedata) {
// 初试化常量
System.arraycopy(abcde, 0, digestInt, 0, abcde.length);
// 格式化输入字节数组，补10及长度数据
byte[] newbyte = byteArrayFormatData(bytedata);
// 获取数据摘要计算的数据单元个数
int MCount = newbyte.length / 64;
// 循环对每个数据单元进行摘要计算
for (int pos = 0; pos < MCount; pos++) {
// 将每个单元的数据转换成16个整型数据，并保存到tmpData的前16个数组元素中
for (int j = 0; j < 16; j++) {
tmpData[j] = byteArrayToInt(newbyte, (pos * 64) + (j * 4));
}
// 摘要计算函数
encrypt();
}
return 20;
}
/**
* 格式化输入字节数组格式
*
* @param bytedata
* @return
*/
private byte[] byteArrayFormatData(byte[] bytedata) {
// 补0数量
int zeros = 0;
// 补位后总位数
int size = 0;
// 原始数据长度
int n = bytedata.length;
// 模64后的剩余位数
int m = n % 64;
// 计算添加0的个数以及添加10后的总长度
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;
}
// 补位后生成的新数组内容
byte[] newbyte = new byte[size];
// 复制数组的前面部分
System.arraycopy(bytedata, 0, newbyte, 0, n);
// 获得数组Append数据元素的位置
int l = n;
// 补1操作
newbyte[l++] = (byte) 0x80;
// 补0操作
for (int i = 0; i < zeros; i++) {
newbyte[l++] = (byte) 0x00;
}
// 计算数据长度，补数据长度位共8字节，长整型
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);
}
/**
* 单元摘要计算函数
*/
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