对参数进行排序后拼接key，进行sha1加密，再对sha1进行MD5加密，生成sign验签

Map<String,Object> map = new HashMap<String,Object>();
map.put("phone",phone);
map.put("type",type);

String sign = SignForInster.signForInspiry(map, "****");//后为key值

sign生成工具类

import java.util.Iterator;
import java.util.Map;
import java.util.Set;
/*
quu..__
 $$$b  `---.__
  "$$b        `--.                          ___.---uuudP
   `$$b           `.__.------.__     __.---'      $$$$"              .
     "$b          -'            `-.-'            $$$"              .'|
       ".                                       d$"             _.'  |
         `.   /                              ..."             .'     |
           `./                           ..::-'            _.'       |
            /                         .:::-'            .-'         .'
           :                          ::''\          _.'            |
          .' .-.             .-.           `.      .'               |
          : /'$$|           .@"$\           `.   .'              _.-'
         .'|$u$$|          |$$,$$|           |  <            _.-'
         | `:$$:'          :$$$$$:           `.  `.       .-'
         :                  `"--'             |    `-.     \
        :##.       ==             .###.       `.      `.    `\
        |##:                      :###:        |        >     >
        |#'     `..'`..'          `###'        x:      /     /
         \                                   xXX|     /    ./
          \                                xXXX'|    /   ./
          /`-.                                  `.  /   /
         :    `-  ...........,                   | /  .'
         |         ``:::::::'       .            |<    `.
         |             ```          |           x| \ `.:``.
         |                         .'    /'   xXX|  `:`M`M':.
         |    |                    ;    /:' xXXX'|  -'MMMMM:'
         `.  .'                   :    /:'       |-'MMMM.-'
          |  |                   .'   /'        .'MMM.-'
          `'`'                   :  ,'          |MMM<
            |                     `'            |tbap\
             \                                  :MM.-'
              \                 |              .''
               \.               `.            /
                /     .:::::::.. :           /
               |     .:::::::::::`.         /
               |   .:::------------\       /
              /   .''               >::'  /
              `',:                 :    .'
                                   `:.:'

 
*/
public class SignForInster {
    static public String signForInspiry(Map params, String key) {

        StringBuffer sbkey = new StringBuffer();
        Set es = params.entrySet();
        Iterator it = es.iterator();

        while (it.hasNext()) {
            Map.Entry entry = (Map.Entry) it.next();
            String k = (String) entry.getKey();
            Object v = entry.getValue();
            //空值不传递，不参与签名组串
            if (null != v && !"".equals(v)) {
                sbkey.append(k + "=" + v + "&");
            }
        }

        sbkey = sbkey.append("key=" + key);
        String s = sbkey.toString();//转为字符串
        String s2 = s.toLowerCase();//转为小写字符
        String sign = null;
        //加密,结果转换为小写字符
        try {
            String hexString = SHA1.getSHA1HexString(s2);//sha1加密
            String s1 = hexString.toLowerCase();//转为小写
            sign = MD5.getMD5(s1);//MD5加密
        } catch (Exception e) {
            e.printStackTrace();
        }
        return sign;
    }
}

MD5加密工具类

public class MD5 {

    //
    private static String key = "a6U&1$Ip[Jr/sed]Rfvn=O>Mz+}lXN*%-gLcGD|0";

    //MD5加密实例
    public static String getMD5(String str) throws NoSuchAlgorithmException {
        MessageDigest md5 = null;
        try {
            md5 = MessageDigest.getInstance("MD5");
        } catch (Exception e) {
            e.printStackTrace();
            return "";
        }
        char[] charArray = str.toCharArray();
        byte[] byteArray = new byte[charArray.length];
        for (int i = 0; i < charArray.length; i++) {
            byteArray[i] = (byte) charArray[i];
        }
        byte[] md5Bytes = md5.digest(byteArray);
        StringBuffer hexValue = new StringBuffer();
        for (int i = 0; i < md5Bytes.length; i++) {
            int val = ((int) md5Bytes[i]) & 0xff;
            if (val < 16) {
                hexValue.append("0");
            }
                hexValue.append(Integer.toHexString(val));
            }
        return hexValue.toString();
        }


    public static String byte2hex(byte[] b) {
        String hs = "";
        String stmp = "";
        for (int n = 0; n < b.length; n++) {
            stmp = (java.lang.Integer.toHexString(b[n] & 0XFF));
            if (stmp.length() == 1) {
            hs = hs + "0" + stmp;
            } else {
                hs = hs + stmp;
            }
        }
        return hs;
    }

    //SHA1 加密实例
    public static String encryptToSHA(String info) {
        byte[] digesta = null;
        try {
            // 得到一个SHA-1的消息摘要
            MessageDigest alga = MessageDigest.getInstance("SHA-1");
            // 添加要进行计算摘要的信息
            alga.update(info.getBytes());
            // 得到该摘要
            digesta = alga.digest();
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        }
        // 将摘要转为字符串
        String rs = byte2hex(digesta);
        return rs + key;
    }
}

sha1加密工具类

import java.security.MessageDigest;

public class SHA1 {
 
   
   public static String getSHA1HexString(String str) throws Exception {
        // SHA1签名生成
        MessageDigest md = MessageDigest.getInstance("SHA-1");
        md.update(str.getBytes());
        byte[] digest = md.digest();
 
        StringBuffer hexstr = new StringBuffer();
        String shaHex = "";
        for (int i = 0; i < digest.length; i++) {
            shaHex = Integer.toHexString(digest[i] & 0xFF);
            if (shaHex.length() < 2) {
                hexstr.append(0);
            }
            hexstr.append(shaHex);
        }
        return hexstr.toString();
    }
   
   
   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   
    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   
    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];   
            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字节数组转换为整数   
    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);   
    }   
    // 整数转换为4字节数组   
    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;   
    }   
    // 将字节转换为十六进制字符串   
    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;   
    }   
    // 将字节数组转换为十六进制字符串   
    private static String byteArrayToHexString(byte[] bytearray) {   
        String strDigest = "";   
        for (int i = 0; i < bytearray.length; i++) {   
            strDigest += byteToHexString(bytearray[i]);   
        }   
        return strDigest;   
    }   
    // 计算sha-1摘要，返回相应的字节数组   
    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;   
    }   
    // 计算sha-1摘要，返回相应的十六进制字符串   
    public String getDigestOfString(byte[] byteData) {   
        return byteArrayToHexString(getDigestOfBytes(byteData));   
    }   
    
    
    /**/
    public static void main(String[] args) {   
        String data = "lvbaolin";   
        System.out.println(data);   
        String digest = new SHA1().getDigestOfString(data.getBytes());   
        System.out.println(digest);  
         
       // System.out.println( ToMD5.convertSHA1(data).toUpperCase());  
    }   
}