1、建立一个sha1加密文件，详细代码如下：
import java.security.*;
public class SHA1Encoder
{
//加密方法 bgy 2013-10-30
public static String encode(String inStr)
{
MessageDigest md = null;
String outStr = null;
try
{
md = MessageDigest.getInstance("SHA-1");//选择SHA-1，也可以选择MD5
byte[] bt = inStr.getBytes();
md.update(bt);
outStr = bytetoString(md.digest());
}
catch(NoSuchAlgorithmException nsae)
{
nsae.printStackTrace();
}
return outStr;
}
//将字节数组转换成16进制字符串 bgy 2013-10-30
public static String bytetoString(byte[] b)
{
StringBuilder sbDes = new StringBuilder();
String tmp = null;
for(int i = 0; i < b.length; i++)
{
tmp = (Integer.toHexString(b[i] & 0xFF));
if(tmp.length() == 1)
{
sbDes.append("0");
}
sbDes.append(tmp);
}
return sbDes.toString();
}
}
2、微信服务器调用接口，详细代码如下：
import java.io.IOException;
import java.io.Writer;
import java.util.Arrays;
import 1中的包；
public class WechatYxl extends CommonAction
{
private static String TOKEN = "88888888";//与微信的密钥 俗称token
//接收微信服务器传过来的参数串，进行业务处理
public void processingData() throws IOException
{
//微信服务器传来的
String signature = request.getParameter("signature");//微信加密签名
String timestamp = request.getParameter("timestamp");//时间戳
String nonce = request.getParameter("nonce");//随机数
String echostr = request.getParameter("echostr");//随机字符串
//1、将token、timestamp、nonce三个参数进行字典序排序
String[] arrDic = {TOKEN,timestamp,nonce};
Arrays.sort(arrDic);
//2、将三个参数字符串拼接成一个字符串
StringBuffer str = new StringBuffer();
for(int i = 0; i < arrDic.length; i++)
{
str.append(arrDic[i]);
}
//3、进行sha1加密
String ticket = SHA1Encoder.encode(str.toString());
Writer out = response.getWriter();
if(signature==ticket || ticket.equals(signature))
{
out.write(echostr);
}
else
{
out.write("");
}
out.flush();
out.close();
}
}