diff --git a/pom.xml b/pom.xml
index dc48fe5..e32aa86 100644
--- a/pom.xml
+++ b/pom.xml
@@ -56,6 +56,24 @@
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-validation</artifactId>
         </dependency>
+
+        <dependency>
+            <groupId>cn.hutool</groupId>
+            <artifactId>hutool-all</artifactId>
+            <version>5.8.41</version>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.poi</groupId>
+            <artifactId>poi</artifactId>
+            <version>4.1.2</version> <!-- 稳定版本，适配大部分项目，可根据需求升级 -->
+        </dependency>
+
+        <dependency>
+            <groupId>org.apache.poi</groupId>
+            <artifactId>poi-ooxml</artifactId>
+            <version>4.1.2</version>
+        </dependency>
+
 	</dependencies>
 
     <build>
diff --git a/src/main/java/com/example/demo/util/ExcelTransfer.java b/src/main/java/com/example/demo/util/ExcelTransfer.java
new file mode 100644
index 0000000..6d206ae
--- /dev/null
+++ b/src/main/java/com/example/demo/util/ExcelTransfer.java
@@ -0,0 +1,116 @@
+package com.example.demo.util;
+
+import cn.hutool.poi.excel.ExcelReader;
+import cn.hutool.poi.excel.ExcelUtil;
+import cn.hutool.poi.excel.ExcelWriter;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * @author buxue
+ * 表格加密导出解密内容
+ */
+public class ExcelTransfer {
+//    public static void main(String[] args) {
+//        // 1. 定义文件路径
+//        // 替换为你的源Excel文件路径
+//        String sourceFile = "/Users/hengspire/data/111.xlsx";
+//        // 替换为你的目标Excel文件路径
+//        String targetFile = "/Users/hengspire/data/222.xlsx";
+//
+//        // 2. 读取源Excel文件
+//        ExcelReader reader = ExcelUtil.getReader(sourceFile);
+//        // 3. 创建写入器
+//        ExcelWriter writer = ExcelUtil.getWriter(targetFile);
+//
+//        // 获取总行数
+//        int rowCount = reader.getRowCount();
+//
+//        // 逐行处理
+//        for (int i = 0; i < rowCount; i++) {
+//            List<Object> row = reader.readRow(i);
+//            List<Object> decryptedRow = new ArrayList<>();
+//
+//            for (Object cellValue : row) {
+//                if (cellValue != null) {
+//                    String decryptedValue = Util.decryptData_ECB(cellValue.toString());
+//                    decryptedRow.add(decryptedValue);
+//                } else {
+//                    decryptedRow.add("");
+//                }
+//            }
+//
+//            // 逐行写入
+//            writer.writeRow(decryptedRow);
+//        }
+//        // 4. 关闭资源
+//        writer.close();
+//        reader.close();
+//
+//        System.out.println("Excel文件数据转移完成！");
+//    }
+
+
+    public static void main(String[] args) {
+        String sourceFile = "/Users/hengspire/data/111.xlsx";
+        String targetFile = "/Users/hengspire/data/222.xlsx";
+
+        ExcelReader reader = ExcelUtil.getReader(sourceFile);
+
+        // 获取所有sheet名称
+        List<String> sheetNames = reader.getSheetNames();
+
+        ExcelWriter writer = ExcelUtil.getWriter(targetFile);
+
+        // 遍历每个sheet页
+        for (String sheetName : sheetNames) {
+            // 切换到当前sheet
+            reader.setSheet(sheetName);
+
+            // 在目标文件中创建对应的sheet
+            writer.setSheet(sheetName);
+
+            // 获取当前sheet的总行数
+            int rowCount = reader.getRowCount();
+
+            // 逐行处理当前sheet
+            for (int i = 0; i < rowCount; i++) {
+                List<Object> row = reader.readRow(i);
+                List<Object> decryptedRow = new ArrayList<>();
+
+                for (Object cellValue : row) {
+                    if (cellValue != null) {
+                        String decryptedValue = SM4Utils.decryptData_ECB(cellValue.toString());
+                        decryptedRow.add(decryptedValue);
+                    } else {
+                        decryptedRow.add("");
+                    }
+                }
+
+                writer.writeRow(decryptedRow);
+            }
+        }
+
+        writer.close();
+        reader.close();
+        System.out.println("多sheet页Excel文件数据转移完成！");
+    }
+
+    // pom依赖
+//        <dependency>
+//            <groupId>cn.hutool</groupId>
+//            <artifactId>hutool-all</artifactId>
+//            <version>5.8.41</version>
+//        </dependency>
+//        <dependency>
+//            <groupId>org.apache.poi</groupId>
+//            <artifactId>poi</artifactId>
+//            <version>4.1.2</version> <!-- 稳定版本，适配大部分项目，可根据需求升级 -->
+//        </dependency>
+//        <dependency>
+//            <groupId>org.apache.poi</groupId>
+//            <artifactId>poi-ooxml</artifactId>
+//            <version>5.2.3</version>
+//        </dependency>
+}
\ No newline at end of file
diff --git a/src/main/java/com/example/demo/util/SM4.java b/src/main/java/com/example/demo/util/SM4.java
new file mode 100644
index 0000000..9ccb93b
--- /dev/null
+++ b/src/main/java/com/example/demo/util/SM4.java
@@ -0,0 +1,300 @@
+package com.example.demo.util;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+
+public class SM4 {
+    public static final int SM4_ENCRYPT = 1;
+
+    public static final int SM4_DECRYPT = 0;
+
+    private long GET_ULONG_BE(byte[] b, int i) {
+        long n = (long) (b[i] & 0xff) << 24 | (long) ((b[i + 1] & 0xff) << 16) | (long) ((b[i + 2] & 0xff) << 8) | (long) (b[i + 3] & 0xff) & 0xffffffffL;
+        return n;
+    }
+
+    private void PUT_ULONG_BE(long n, byte[] b, int i) {
+        b[i] = (byte) (int) (0xFF & n >> 24);
+        b[i + 1] = (byte) (int) (0xFF & n >> 16);
+        b[i + 2] = (byte) (int) (0xFF & n >> 8);
+        b[i + 3] = (byte) (int) (0xFF & n);
+    }
+
+    private long SHL(long x, int n) {
+        return (x & 0xFFFFFFFF) << n;
+    }
+
+    private long ROTL(long x, int n) {
+        return SHL(x, n) | x >> (32 - n);
+    }
+
+    private void SWAP(long[] sk, int i) {
+        long t = sk[i];
+        sk[i] = sk[(31 - i)];
+        sk[(31 - i)] = t;
+    }
+
+    public static final byte[] SboxTable = {(byte) 0xd6, (byte) 0x90, (byte) 0xe9, (byte) 0xfe,
+            (byte) 0xcc, (byte) 0xe1, 0x3d, (byte) 0xb7, 0x16, (byte) 0xb6,
+            0x14, (byte) 0xc2, 0x28, (byte) 0xfb, 0x2c, 0x05, 0x2b, 0x67,
+            (byte) 0x9a, 0x76, 0x2a, (byte) 0xbe, 0x04, (byte) 0xc3,
+            (byte) 0xaa, 0x44, 0x13, 0x26, 0x49, (byte) 0x86, 0x06,
+            (byte) 0x99, (byte) 0x9c, 0x42, 0x50, (byte) 0xf4, (byte) 0x91,
+            (byte) 0xef, (byte) 0x98, 0x7a, 0x33, 0x54, 0x0b, 0x43,
+            (byte) 0xed, (byte) 0xcf, (byte) 0xac, 0x62, (byte) 0xe4,
+            (byte) 0xb3, 0x1c, (byte) 0xa9, (byte) 0xc9, 0x08, (byte) 0xe8,
+            (byte) 0x95, (byte) 0x80, (byte) 0xdf, (byte) 0x94, (byte) 0xfa,
+            0x75, (byte) 0x8f, 0x3f, (byte) 0xa6, 0x47, 0x07, (byte) 0xa7,
+            (byte) 0xfc, (byte) 0xf3, 0x73, 0x17, (byte) 0xba, (byte) 0x83,
+            0x59, 0x3c, 0x19, (byte) 0xe6, (byte) 0x85, 0x4f, (byte) 0xa8,
+            0x68, 0x6b, (byte) 0x81, (byte) 0xb2, 0x71, 0x64, (byte) 0xda,
+            (byte) 0x8b, (byte) 0xf8, (byte) 0xeb, 0x0f, 0x4b, 0x70, 0x56,
+            (byte) 0x9d, 0x35, 0x1e, 0x24, 0x0e, 0x5e, 0x63, 0x58, (byte) 0xd1,
+            (byte) 0xa2, 0x25, 0x22, 0x7c, 0x3b, 0x01, 0x21, 0x78, (byte) 0x87,
+            (byte) 0xd4, 0x00, 0x46, 0x57, (byte) 0x9f, (byte) 0xd3, 0x27,
+            0x52, 0x4c, 0x36, 0x02, (byte) 0xe7, (byte) 0xa0, (byte) 0xc4,
+            (byte) 0xc8, (byte) 0x9e, (byte) 0xea, (byte) 0xbf, (byte) 0x8a,
+            (byte) 0xd2, 0x40, (byte) 0xc7, 0x38, (byte) 0xb5, (byte) 0xa3,
+            (byte) 0xf7, (byte) 0xf2, (byte) 0xce, (byte) 0xf9, 0x61, 0x15,
+            (byte) 0xa1, (byte) 0xe0, (byte) 0xae, 0x5d, (byte) 0xa4,
+            (byte) 0x9b, 0x34, 0x1a, 0x55, (byte) 0xad, (byte) 0x93, 0x32,
+            0x30, (byte) 0xf5, (byte) 0x8c, (byte) 0xb1, (byte) 0xe3, 0x1d,
+            (byte) 0xf6, (byte) 0xe2, 0x2e, (byte) 0x82, 0x66, (byte) 0xca,
+            0x60, (byte) 0xc0, 0x29, 0x23, (byte) 0xab, 0x0d, 0x53, 0x4e, 0x6f,
+            (byte) 0xd5, (byte) 0xdb, 0x37, 0x45, (byte) 0xde, (byte) 0xfd,
+            (byte) 0x8e, 0x2f, 0x03, (byte) 0xff, 0x6a, 0x72, 0x6d, 0x6c, 0x5b,
+            0x51, (byte) 0x8d, 0x1b, (byte) 0xaf, (byte) 0x92, (byte) 0xbb,
+            (byte) 0xdd, (byte) 0xbc, 0x7f, 0x11, (byte) 0xd9, 0x5c, 0x41,
+            0x1f, 0x10, 0x5a, (byte) 0xd8, 0x0a, (byte) 0xc1, 0x31,
+            (byte) 0x88, (byte) 0xa5, (byte) 0xcd, 0x7b, (byte) 0xbd, 0x2d,
+            0x74, (byte) 0xd0, 0x12, (byte) 0xb8, (byte) 0xe5, (byte) 0xb4,
+            (byte) 0xb0, (byte) 0x89, 0x69, (byte) 0x97, 0x4a, 0x0c,
+            (byte) 0x96, 0x77, 0x7e, 0x65, (byte) 0xb9, (byte) 0xf1, 0x09,
+            (byte) 0xc5, 0x6e, (byte) 0xc6, (byte) 0x84, 0x18, (byte) 0xf0,
+            0x7d, (byte) 0xec, 0x3a, (byte) 0xdc, 0x4d, 0x20, 0x79,
+            (byte) 0xee, 0x5f, 0x3e, (byte) 0xd7, (byte) 0xcb, 0x39, 0x48};
+
+    public static final int[] FK = {0xa3b1bac6, 0x56aa3350, 0x677d9197, 0xb27022dc};
+
+    public static final int[] CK = {0x00070e15, 0x1c232a31, 0x383f464d, 0x545b6269,
+            0x70777e85, 0x8c939aa1, 0xa8afb6bd, 0xc4cbd2d9,
+            0xe0e7eef5, 0xfc030a11, 0x181f262d, 0x343b4249,
+            0x50575e65, 0x6c737a81, 0x888f969d, 0xa4abb2b9,
+            0xc0c7ced5, 0xdce3eaf1, 0xf8ff060d, 0x141b2229,
+            0x30373e45, 0x4c535a61, 0x686f767d, 0x848b9299,
+            0xa0a7aeb5, 0xbcc3cad1, 0xd8dfe6ed, 0xf4fb0209,
+            0x10171e25, 0x2c333a41, 0x484f565d, 0x646b7279};
+
+    private byte sm4Sbox(byte inch) {
+        int i = inch & 0xFF;
+        byte retVal = SboxTable[i];
+        return retVal;
+    }
+
+    private long sm4Lt(long ka) {
+        long bb = 0L;
+        long c = 0L;
+        byte[] a = new byte[4];
+        byte[] b = new byte[4];
+        PUT_ULONG_BE(ka, a, 0);
+        b[0] = sm4Sbox(a[0]);
+        b[1] = sm4Sbox(a[1]);
+        b[2] = sm4Sbox(a[2]);
+        b[3] = sm4Sbox(a[3]);
+        bb = GET_ULONG_BE(b, 0);
+        c = bb ^ ROTL(bb, 2) ^ ROTL(bb, 10) ^ ROTL(bb, 18) ^ ROTL(bb, 24);
+        return c;
+    }
+
+    private long sm4F(long x0, long x1, long x2, long x3, long rk) {
+        return x0 ^ sm4Lt(x1 ^ x2 ^ x3 ^ rk);
+    }
+
+    private long sm4CalciRK(long ka) {
+        long bb = 0L;
+        long rk = 0L;
+        byte[] a = new byte[4];
+        byte[] b = new byte[4];
+        PUT_ULONG_BE(ka, a, 0);
+        b[0] = sm4Sbox(a[0]);
+        b[1] = sm4Sbox(a[1]);
+        b[2] = sm4Sbox(a[2]);
+        b[3] = sm4Sbox(a[3]);
+        bb = GET_ULONG_BE(b, 0);
+        rk = bb ^ ROTL(bb, 13) ^ ROTL(bb, 23);
+        return rk;
+    }
+
+    private void sm4_setkey(long[] SK, byte[] key) {
+        long[] MK = new long[4];
+        long[] k = new long[36];
+        int i = 0;
+        MK[0] = GET_ULONG_BE(key, 0);
+        MK[1] = GET_ULONG_BE(key, 4);
+        MK[2] = GET_ULONG_BE(key, 8);
+        MK[3] = GET_ULONG_BE(key, 12);
+        k[0] = MK[0] ^ (long) FK[0];
+        k[1] = MK[1] ^ (long) FK[1];
+        k[2] = MK[2] ^ (long) FK[2];
+        k[3] = MK[3] ^ (long) FK[3];
+        for (; i < 32; i++) {
+            k[(i + 4)] = (k[i] ^ sm4CalciRK(k[(i + 1)] ^ k[(i + 2)] ^ k[(i + 3)] ^ (long) CK[i]));
+            SK[i] = k[(i + 4)];
+        }
+    }
+
+    private void sm4_one_round(long[] sk, byte[] input, byte[] output) {
+        int i = 0;
+        long[] ulbuf = new long[36];
+        ulbuf[0] = GET_ULONG_BE(input, 0);
+        ulbuf[1] = GET_ULONG_BE(input, 4);
+        ulbuf[2] = GET_ULONG_BE(input, 8);
+        ulbuf[3] = GET_ULONG_BE(input, 12);
+        while (i < 32) {
+            ulbuf[(i + 4)] = sm4F(ulbuf[i], ulbuf[(i + 1)], ulbuf[(i + 2)], ulbuf[(i + 3)], sk[i]);
+            i++;
+        }
+        PUT_ULONG_BE(ulbuf[35], output, 0);
+        PUT_ULONG_BE(ulbuf[34], output, 4);
+        PUT_ULONG_BE(ulbuf[33], output, 8);
+        PUT_ULONG_BE(ulbuf[32], output, 12);
+    }
+
+    private byte[] padding(byte[] input, int mode) {
+        if (input == null) {
+            return null;
+        }
+
+        byte[] ret = (byte[]) null;
+        if (mode == SM4_ENCRYPT) {
+            int p = 16 - input.length % 16;
+            ret = new byte[input.length + p];
+            System.arraycopy(input, 0, ret, 0, input.length);
+            for (int i = 0; i < p; i++) {
+                ret[input.length + i] = (byte) p;
+            }
+        } else {
+            int p = input[input.length - 1];
+            ret = new byte[input.length - p];
+            System.arraycopy(input, 0, ret, 0, input.length - p);
+        }
+        return ret;
+    }
+
+    public void sm4_setkey_enc(SM4_Context ctx, byte[] key) throws Exception {
+        if (ctx == null) {
+            throw new Exception("ctx is null!");
+        }
+
+        if (key == null || key.length != 16) {
+            throw new Exception("key error!");
+        }
+
+        ctx.mode = SM4_ENCRYPT;
+        sm4_setkey(ctx.sk, key);
+    }
+
+    public void sm4_setkey_dec(SM4_Context ctx, byte[] key) throws Exception {
+        if (ctx == null) {
+            throw new Exception("ctx is null!");
+        }
+
+        if (key == null || key.length != 16) {
+            throw new Exception("key error!");
+        }
+
+        int i = 0;
+        ctx.mode = SM4_DECRYPT;
+        sm4_setkey(ctx.sk, key);
+        for (i = 0; i < 16; i++) {
+            SWAP(ctx.sk, i);
+        }
+    }
+
+    public byte[] sm4_crypt_ecb(SM4_Context ctx, byte[] input) throws Exception {
+        if (input == null) {
+            throw new Exception("input is null!");
+        }
+
+        if ((ctx.isPadding) && (ctx.mode == SM4_ENCRYPT)) {
+            input = padding(input, SM4_ENCRYPT);
+        }
+
+        int length = input.length;
+        ByteArrayInputStream bins = new ByteArrayInputStream(input);
+        ByteArrayOutputStream bous = new ByteArrayOutputStream();
+        for (; length > 0; length -= 16) {
+            byte[] in = new byte[16];
+            byte[] out = new byte[16];
+            bins.read(in);
+            sm4_one_round(ctx.sk, in, out);
+            bous.write(out);
+        }
+
+        byte[] output = bous.toByteArray();
+        if (ctx.isPadding && ctx.mode == SM4_DECRYPT) {
+            output = padding(output, SM4_DECRYPT);
+        }
+        bins.close();
+        bous.close();
+        return output;
+    }
+
+    public byte[] sm4_crypt_cbc(SM4_Context ctx, byte[] iv, byte[] input) throws Exception {
+        if (iv == null || iv.length != 16) {
+            throw new Exception("iv error!");
+        }
+
+        if (input == null) {
+            throw new Exception("input is null!");
+        }
+
+        if (ctx.isPadding && ctx.mode == SM4_ENCRYPT) {
+            input = padding(input, SM4_ENCRYPT);
+        }
+
+        int i = 0;
+        int length = input.length;
+        ByteArrayInputStream bins = new ByteArrayInputStream(input);
+        ByteArrayOutputStream bous = new ByteArrayOutputStream();
+        if (ctx.mode == SM4_ENCRYPT) {
+            for (; length > 0; length -= 16) {
+                byte[] in = new byte[16];
+                byte[] out = new byte[16];
+                byte[] out1 = new byte[16];
+
+                bins.read(in);
+                for (i = 0; i < 16; i++) {
+                    out[i] = ((byte) (in[i] ^ iv[i]));
+                }
+                sm4_one_round(ctx.sk, out, out1);
+                System.arraycopy(out1, 0, iv, 0, 16);
+                bous.write(out1);
+            }
+        } else {
+            byte[] temp = new byte[16];
+            for (; length > 0; length -= 16) {
+                byte[] in = new byte[16];
+                byte[] out = new byte[16];
+                byte[] out1 = new byte[16];
+
+                bins.read(in);
+                System.arraycopy(in, 0, temp, 0, 16);
+                sm4_one_round(ctx.sk, in, out);
+                for (i = 0; i < 16; i++) {
+                    out1[i] = ((byte) (out[i] ^ iv[i]));
+                }
+                System.arraycopy(temp, 0, iv, 0, 16);
+                bous.write(out1);
+            }
+        }
+
+        byte[] output = bous.toByteArray();
+        if (ctx.isPadding && ctx.mode == SM4_DECRYPT) {
+            output = padding(output, SM4_DECRYPT);
+        }
+        bins.close();
+        bous.close();
+        return output;
+    }
+}
diff --git a/src/main/java/com/example/demo/util/SM4Utils.java b/src/main/java/com/example/demo/util/SM4Utils.java
new file mode 100644
index 0000000..d138fde
--- /dev/null
+++ b/src/main/java/com/example/demo/util/SM4Utils.java
@@ -0,0 +1,83 @@
+package com.example.demo.util;
+
+import cn.hutool.core.codec.Base64Decoder;
+import cn.hutool.core.codec.Base64Encoder;
+import org.springframework.stereotype.Component;
+
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+@Component
+public class SM4Utils {
+
+    public static String secretKey = "Lmct0AGBd13WPniB";
+    public static boolean hexString = false;
+
+    public SM4Utils() {
+    }
+
+    /**
+     * 加密方法
+     *
+     * @param plainText
+     * @return
+     */
+    public static String encryptData_ECB(String plainText) {
+        try {
+            SM4_Context ctx = new SM4_Context();
+            ctx.isPadding = true;
+            ctx.mode = SM4.SM4_ENCRYPT;
+
+            byte[] keyBytes;
+            if (hexString) {
+                keyBytes = Util.hexStringToBytes(secretKey);
+            } else {
+                keyBytes = secretKey.getBytes();
+            }
+
+            SM4 sm4 = new SM4();
+            sm4.sm4_setkey_enc(ctx, keyBytes);
+            byte[] encrypted = sm4.sm4_crypt_ecb(ctx, plainText.getBytes("GB18030"));
+            String cipherText = Base64Encoder.encode(encrypted);
+            if (cipherText != null && cipherText.trim().length() > 0) {
+                Pattern p = Pattern.compile("\\s*|\t|\r|\n");
+                Matcher m = p.matcher(cipherText);
+                cipherText = m.replaceAll("");
+            }
+            return cipherText;
+        } catch (Exception e) {
+            e.printStackTrace();
+            return null;
+        }
+    }
+
+    /**
+     * 解密方法
+     *
+     * @param cipherText
+     * @return
+     */
+    public static String decryptData_ECB(String cipherText) {
+        try {
+            SM4_Context ctx = new SM4_Context();
+            ctx.isPadding = true;
+            ctx.mode = SM4.SM4_DECRYPT;
+
+            byte[] keyBytes;
+            if (hexString) {
+                keyBytes = Util.hexStringToBytes(secretKey);
+            } else {
+                keyBytes = secretKey.getBytes();
+            }
+
+            SM4 sm4 = new SM4();
+            sm4.sm4_setkey_dec(ctx, keyBytes);
+            byte[] decrypted = sm4.sm4_crypt_ecb(ctx, Base64Decoder.decode(cipherText));
+            return new String(decrypted, "GB18030");
+        } catch (Exception e) {
+            e.printStackTrace();
+            return null;
+        }
+    }
+}
+
diff --git a/src/main/java/com/example/demo/util/SM4_Context.java b/src/main/java/com/example/demo/util/SM4_Context.java
new file mode 100644
index 0000000..af58e01
--- /dev/null
+++ b/src/main/java/com/example/demo/util/SM4_Context.java
@@ -0,0 +1,15 @@
+package com.example.demo.util;
+
+public class SM4_Context {
+    public int mode;
+
+    public long[] sk;
+
+    public boolean isPadding;
+
+    public SM4_Context() {
+        this.mode = 1;
+        this.isPadding = true;
+        this.sk = new long[32];
+    }
+}
diff --git a/src/main/java/com/example/demo/util/Util.java b/src/main/java/com/example/demo/util/Util.java
new file mode 100644
index 0000000..28545f3
--- /dev/null
+++ b/src/main/java/com/example/demo/util/Util.java
@@ -0,0 +1,618 @@
+package com.example.demo.util;
+
+import java.math.BigInteger;
+
+public class Util {
+    /**
+     * 整形转换成网络传输的字节流（字节数组）型数据
+     *
+     * @param num 一个整型数据
+     * @return 4个字节的自己数组
+     */
+    public static byte[] intToBytes(int num) {
+        byte[] bytes = new byte[4];
+        bytes[0] = (byte) (0xff & (num >> 0));
+        bytes[1] = (byte) (0xff & (num >> 8));
+        bytes[2] = (byte) (0xff & (num >> 16));
+        bytes[3] = (byte) (0xff & (num >> 24));
+        return bytes;
+    }
+
+    /**
+     * 四个字节的字节数据转换成一个整形数据
+     *
+     * @param bytes 4个字节的字节数组
+     * @return 一个整型数据
+     */
+    public static int byteToInt(byte[] bytes) {
+        int num = 0;
+        int temp;
+        temp = (0x000000ff & (bytes[0])) << 0;
+        num = num | temp;
+        temp = (0x000000ff & (bytes[1])) << 8;
+        num = num | temp;
+        temp = (0x000000ff & (bytes[2])) << 16;
+        num = num | temp;
+        temp = (0x000000ff & (bytes[3])) << 24;
+        num = num | temp;
+        return num;
+    }
+
+    /**
+     * 长整形转换成网络传输的字节流（字节数组）型数据
+     *
+     * @param num 一个长整型数据
+     * @return 4个字节的自己数组
+     */
+    public static byte[] longToBytes(long num) {
+        byte[] bytes = new byte[8];
+        for (int i = 0; i < 8; i++) {
+            bytes[i] = (byte) (0xff & (num >> (i * 8)));
+        }
+
+        return bytes;
+    }
+
+    /**
+     * 大数字转换字节流（字节数组）型数据
+     *
+     * @param n
+     * @return
+     */
+    public static byte[] byteConvert32Bytes(BigInteger n) {
+        byte tmpd[] = (byte[]) null;
+        if (n == null) {
+            return null;
+        }
+
+        if (n.toByteArray().length == 33) {
+            tmpd = new byte[32];
+            System.arraycopy(n.toByteArray(), 1, tmpd, 0, 32);
+        } else if (n.toByteArray().length == 32) {
+            tmpd = n.toByteArray();
+        } else {
+            tmpd = new byte[32];
+            for (int i = 0; i < 32 - n.toByteArray().length; i++) {
+                tmpd[i] = 0;
+            }
+            System.arraycopy(n.toByteArray(), 0, tmpd, 32 - n.toByteArray().length, n.toByteArray().length);
+        }
+        return tmpd;
+    }
+
+    /**
+     * 换字节流（字节数组）型数据转大数字
+     *
+     * @param b
+     * @return
+     */
+    public static BigInteger byteConvertInteger(byte[] b) {
+        if (b[0] < 0) {
+            byte[] temp = new byte[b.length + 1];
+            temp[0] = 0;
+            System.arraycopy(b, 0, temp, 1, b.length);
+            return new BigInteger(temp);
+        }
+        return new BigInteger(b);
+    }
+
+    /**
+     * 根据字节数组获得值(十六进制数字)
+     *
+     * @param bytes
+     * @return
+     */
+    public static String getHexString(byte[] bytes) {
+        return getHexString(bytes, true);
+    }
+
+    /**
+     * 根据字节数组获得值(十六进制数字)
+     *
+     * @param bytes
+     * @param upperCase
+     * @return
+     */
+    public static String getHexString(byte[] bytes, boolean upperCase) {
+        String ret = "";
+        for (int i = 0; i < bytes.length; i++) {
+            ret += Integer.toString((bytes[i] & 0xff) + 0x100, 16).substring(1);
+        }
+        return upperCase ? ret.toUpperCase() : ret;
+    }
+
+    /**
+     * 打印十六进制字符串
+     *
+     * @param bytes
+     */
+    public static void printHexString(byte[] bytes) {
+        for (int i = 0; i < bytes.length; i++) {
+            String hex = Integer.toHexString(bytes[i] & 0xFF);
+            if (hex.length() == 1) {
+                hex = '0' + hex;
+            }
+            System.out.print("0x" + hex.toUpperCase() + ",");
+        }
+    }
+    //11
+
+    /**
+     * Convert hex string to byte[]
+     *
+     * @param hexString the hex string
+     * @return byte[]
+     */
+    public static byte[] hexStringToBytes(String hexString) {
+        if (hexString == null || hexString.equals("")) {
+            return null;
+        }
+
+        hexString = hexString.toUpperCase();
+        int length = hexString.length() / 2;
+        char[] hexChars = hexString.toCharArray();
+        byte[] d = new byte[length];
+        for (int i = 0; i < length; i++) {
+            int pos = i * 2;
+            d[i] = (byte) (charToByte(hexChars[pos]) << 4 | charToByte(hexChars[pos + 1]));
+        }
+        return d;
+    }
+
+    /**
+     * Convert char to byte
+     *
+     * @param c char
+     * @return byte
+     */
+    public static byte charToByte(char c) {
+        return (byte) "0123456789ABCDEF".indexOf(c);
+    }
+
+    /**
+     * 用于建立十六进制字符的输出的小写字符数组
+     */
+    private static final char[] DIGITS_LOWER = {'0', '1', '2', '3', '4', '5',
+            '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'};
+
+    /**
+     * 用于建立十六进制字符的输出的大写字符数组
+     */
+    private static final char[] DIGITS_UPPER = {'0', '1', '2', '3', '4', '5',
+            '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'};
+
+    /**
+     * 将字节数组转换为十六进制字符数组
+     *
+     * @param data byte[]
+     * @return 十六进制char[]
+     */
+    public static char[] encodeHex(byte[] data) {
+        return encodeHex(data, true);
+    }
+
+    /**
+     * 将字节数组转换为十六进制字符数组
+     *
+     * @param data        byte[]
+     * @param toLowerCase <code>true</code> 传换成小写格式 ， <code>false</code> 传换成大写格式
+     * @return 十六进制char[]
+     */
+    public static char[] encodeHex(byte[] data, boolean toLowerCase) {
+        return encodeHex(data, toLowerCase ? DIGITS_LOWER : DIGITS_UPPER);
+    }
+
+    /**
+     * 将字节数组转换为十六进制字符数组
+     *
+     * @param data     byte[]
+     * @param toDigits 用于控制输出的char[]
+     * @return 十六进制char[]
+     */
+    protected static char[] encodeHex(byte[] data, char[] toDigits) {
+        int l = data.length;
+        char[] out = new char[l << 1];
+        // two characters form the hex value.  
+        for (int i = 0, j = 0; i < l; i++) {
+            out[j++] = toDigits[(0xF0 & data[i]) >>> 4];
+            out[j++] = toDigits[0x0F & data[i]];
+        }
+        return out;
+    }
+    //11
+
+    /**
+     * 将字节数组转换为十六进制字符串
+     *
+     * @param data byte[]
+     * @return 十六进制String
+     */
+    public static String encodeHexString(byte[] data) {
+        return encodeHexString(data, true);
+    }
+
+    /**
+     * 将字节数组转换为十六进制字符串
+     *
+     * @param data        byte[]
+     * @param toLowerCase <code>true</code> 传换成小写格式 ， <code>false</code> 传换成大写格式
+     * @return 十六进制String
+     */
+    public static String encodeHexString(byte[] data, boolean toLowerCase) {
+        return encodeHexString(data, toLowerCase ? DIGITS_LOWER : DIGITS_UPPER);
+    }
+
+    /**
+     * 将字节数组转换为十六进制字符串
+     *
+     * @param data     byte[]
+     * @param toDigits 用于控制输出的char[]
+     * @return 十六进制String
+     */
+    protected static String encodeHexString(byte[] data, char[] toDigits) {
+        return new String(encodeHex(data, toDigits));
+    }
+
+    /**
+     * 将十六进制字符数组转换为字节数组
+     *
+     * @param data 十六进制char[]
+     * @return byte[]
+     * @throws RuntimeException 如果源十六进制字符数组是一个奇怪的长度，将抛出运行时异常
+     */
+    public static byte[] decodeHex(char[] data) {
+        int len = data.length;
+
+        if ((len & 0x01) != 0) {
+            throw new RuntimeException("Odd number of characters.");
+        }
+
+        byte[] out = new byte[len >> 1];
+
+        // two characters form the hex value.  
+        for (int i = 0, j = 0; j < len; i++) {
+            int f = toDigit(data[j], j) << 4;
+            j++;
+            f = f | toDigit(data[j], j);
+            j++;
+            out[i] = (byte) (f & 0xFF);
+        }
+
+        return out;
+    }
+
+    /**
+     * 将十六进制字符转换成一个整数
+     *
+     * @param ch    十六进制char
+     * @param index 十六进制字符在字符数组中的位置
+     * @return 一个整数
+     * @throws RuntimeException 当ch不是一个合法的十六进制字符时，抛出运行时异常
+     */
+    protected static int toDigit(char ch, int index) {
+        int digit = Character.digit(ch, 16);
+        if (digit == -1) {
+            throw new RuntimeException("Illegal hexadecimal character " + ch
+                    + " at index " + index);
+        }
+        return digit;
+    }
+
+    /**
+     * 数字字符串转ASCII码字符串
+     *
+     * @param String 字符串
+     * @return ASCII字符串
+     */
+    public static String StringToAsciiString(String content) {
+        String result = "";
+        int max = content.length();
+        for (int i = 0; i < max; i++) {
+            char c = content.charAt(i);
+            String b = Integer.toHexString(c);
+            result = result + b;
+        }
+        return result;
+    }
+
+    /**
+     * 十六进制转字符串
+     *
+     * @param hexString  十六进制字符串
+     * @param encodeType 编码类型4：Unicode，2：普通编码
+     * @return 字符串
+     */
+    public static String hexStringToString(String hexString, int encodeType) {
+        String result = "";
+        int max = hexString.length() / encodeType;
+        for (int i = 0; i < max; i++) {
+            char c = (char) hexStringToAlgorism(hexString
+                    .substring(i * encodeType, (i + 1) * encodeType));
+            result += c;
+        }
+        return result;
+    }
+
+    /**
+     * 十六进制字符串装十进制
+     *
+     * @param hex 十六进制字符串
+     * @return 十进制数值
+     */
+    public static int hexStringToAlgorism(String hex) {
+        hex = hex.toUpperCase();
+        int max = hex.length();
+        int result = 0;
+        for (int i = max; i > 0; i--) {
+            char c = hex.charAt(i - 1);
+            int algorism = 0;
+            if (c >= '0' && c <= '9') {
+                algorism = c - '0';
+            } else {
+                algorism = c - 55;
+            }
+            result += Math.pow(16, max - i) * algorism;
+        }
+        return result;
+    }
+
+    /**
+     * 十六转二进制
+     *
+     * @param hex 十六进制字符串
+     * @return 二进制字符串
+     */
+    public static String hexStringToBinary(String hex) {
+        hex = hex.toUpperCase();
+        String result = "";
+        int max = hex.length();
+        for (int i = 0; i < max; i++) {
+            char c = hex.charAt(i);
+            switch (c) {
+                case '0':
+                    result += "0000";
+                    break;
+                case '1':
+                    result += "0001";
+                    break;
+                case '2':
+                    result += "0010";
+                    break;
+                case '3':
+                    result += "0011";
+                    break;
+                case '4':
+                    result += "0100";
+                    break;
+                case '5':
+                    result += "0101";
+                    break;
+                case '6':
+                    result += "0110";
+                    break;
+                case '7':
+                    result += "0111";
+                    break;
+                case '8':
+                    result += "1000";
+                    break;
+                case '9':
+                    result += "1001";
+                    break;
+                case 'A':
+                    result += "1010";
+                    break;
+                case 'B':
+                    result += "1011";
+                    break;
+                case 'C':
+                    result += "1100";
+                    break;
+                case 'D':
+                    result += "1101";
+                    break;
+                case 'E':
+                    result += "1110";
+                    break;
+                case 'F':
+                    result += "1111";
+                    break;
+            }
+        }
+        return result;
+    }
+
+    /**
+     * ASCII码字符串转数字字符串
+     *
+     * @param String ASCII字符串
+     * @return 字符串
+     */
+    public static String AsciiStringToString(String content) {
+        String result = "";
+        int length = content.length() / 2;
+        for (int i = 0; i < length; i++) {
+            String c = content.substring(i * 2, i * 2 + 2);
+            int a = hexStringToAlgorism(c);
+            char b = (char) a;
+            String d = String.valueOf(b);
+            result += d;
+        }
+        return result;
+    }
+
+    /**
+     * 将十进制转换为指定长度的十六进制字符串
+     *
+     * @param algorism  int 十进制数字
+     * @param maxLength int 转换后的十六进制字符串长度
+     * @return String 转换后的十六进制字符串
+     */
+    public static String algorismToHexString(int algorism, int maxLength) {
+        String result = "";
+        result = Integer.toHexString(algorism);
+
+        if (result.length() % 2 == 1) {
+            result = "0" + result;
+        }
+        return patchHexString(result.toUpperCase(), maxLength);
+    }
+
+    /**
+     * 字节数组转为普通字符串（ASCII对应的字符）
+     *
+     * @param bytearray byte[]
+     * @return String
+     */
+    public static String byteToString(byte[] bytearray) {
+        String result = "";
+        char temp;
+
+        int length = bytearray.length;
+        for (int i = 0; i < length; i++) {
+            temp = (char) bytearray[i];
+            result += temp;
+        }
+        return result;
+    }
+
+    /**
+     * 二进制字符串转十进制
+     *
+     * @param binary 二进制字符串
+     * @return 十进制数值
+     */
+    public static int binaryToAlgorism(String binary) {
+        int max = binary.length();
+        int result = 0;
+        for (int i = max; i > 0; i--) {
+            char c = binary.charAt(i - 1);
+            int algorism = c - '0';
+            result += Math.pow(2, max - i) * algorism;
+        }
+        return result;
+    }
+
+    /**
+     * 十进制转换为十六进制字符串
+     *
+     * @param algorism int 十进制的数字
+     * @return String 对应的十六进制字符串
+     */
+    public static String algorismToHEXString(int algorism) {
+        String result = "";
+        result = Integer.toHexString(algorism);
+
+        if (result.length() % 2 == 1) {
+            result = "0" + result;
+
+        }
+        result = result.toUpperCase();
+
+        return result;
+    }
+
+    /**
+     * HEX字符串前补0，主要用于长度位数不足。
+     *
+     * @param str       String 需要补充长度的十六进制字符串
+     * @param maxLength int 补充后十六进制字符串的长度
+     * @return 补充结果
+     */
+    static public String patchHexString(String str, int maxLength) {
+        String temp = "";
+        for (int i = 0; i < maxLength - str.length(); i++) {
+            temp = "0" + temp;
+        }
+        str = (temp + str).substring(0, maxLength);
+        return str;
+    }
+
+    /**
+     * 将一个字符串转换为int
+     *
+     * @param s          String 要转换的字符串
+     * @param defaultInt int 如果出现异常,默认返回的数字
+     * @param radix      int 要转换的字符串是什么进制的,如16 8 10.
+     * @return int 转换后的数字
+     */
+    public static int parseToInt(String s, int defaultInt, int radix) {
+        int i = 0;
+        try {
+            i = Integer.parseInt(s, radix);
+        } catch (NumberFormatException ex) {
+            i = defaultInt;
+        }
+        return i;
+    }
+
+    /**
+     * 将一个十进制形式的数字字符串转换为int
+     *
+     * @param s          String 要转换的字符串
+     * @param defaultInt int 如果出现异常,默认返回的数字
+     * @return int 转换后的数字
+     */
+    public static int parseToInt(String s, int defaultInt) {
+        int i = 0;
+        try {
+            i = Integer.parseInt(s);
+        } catch (NumberFormatException ex) {
+            i = defaultInt;
+        }
+        return i;
+    }
+
+    /**
+     * 十六进制串转化为byte数组
+     *
+     * @return the array of byte
+     */
+    public static byte[] hexToByte(String hex)
+            throws IllegalArgumentException {
+        if (hex.length() % 2 != 0) {
+            throw new IllegalArgumentException();
+        }
+        char[] arr = hex.toCharArray();
+        byte[] b = new byte[hex.length() / 2];
+        for (int i = 0, j = 0, l = hex.length(); i < l; i++, j++) {
+            String swap = "" + arr[i++] + arr[i];
+            int byteint = Integer.parseInt(swap, 16) & 0xFF;
+            b[j] = new Integer(byteint).byteValue();
+        }
+        return b;
+    }
+
+    /**
+     * 字节数组转换为十六进制字符串
+     *
+     * @param b byte[] 需要转换的字节数组
+     * @return String 十六进制字符串
+     */
+    public static String byteToHex(byte b[]) {
+        if (b == null) {
+            throw new IllegalArgumentException(
+                    "Argument b ( byte array ) is null! ");
+        }
+        String hs = "";
+        String stmp = "";
+        for (int n = 0; n < b.length; n++) {
+            stmp = Integer.toHexString(b[n] & 0xff);
+            if (stmp.length() == 1) {
+                hs = hs + "0" + stmp;
+            } else {
+                hs = hs + stmp;
+            }
+        }
+        return hs.toUpperCase();
+    }
+
+    public static byte[] subByte(byte[] input, int startIndex, int length) {
+        byte[] bt = new byte[length];
+        for (int i = 0; i < length; i++) {
+            bt[i] = input[i + startIndex];
+        }
+        return bt;
+    }
+}
+