短信分割算法（以长度分割）

    /**

     * 以给定的<code> LENGTH </code>分割短信内容，返回分割后的字符串数组<br>

     * 以下是返回内容示例：

     *

     * <pre>

     * sSMS = “abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz”;

     * 1. 分割后的短信个数 < 10

     * LENGTH = 10;

     * (1/6)abcdefghij

     * (2/6)klmnopqrst

     * (3/6)uvwxyzabcd

     * (4/6)efghijklmn

     * (5/6)opqrstuvwx

     * (6/6)yz = 7

     *

     * 2. 分割后的短信个数 >= 10

     * LENGTH = 5;

     * (1/15)abcd

     * (2/15)efgh

     * (3/15)ijkl

     * ......

     * (13/15)tuv

     * (14/15)wxy

     * (15/15)z

     * </pre>

     *

     * @param sSMS

     *            短信内容

     * @param LENGTH

     *            每条短信的长度

     * @return 一组短信内容

     */

    public static String[] smsSplit(String sSMS, final int LENGTH) {

       int iContentLength = sSMS.trim().length();

       if (LENGTH >= iContentLength) {

           // 短信内容的长度小于等于LENGTH，不用分割直接返回

           return new String[] { sSMS };

       }

 

       final int iSMS_Num_9 = 9; // 分割9条短信

       int iSum = LENGTH * iSMS_Num_9; // 短信条数等于9的总长度，

       int iLength = 0;

       if (iContentLength > iSum) {

           // 源短信的长度大于iSum，表示源短信可以被分割的数量超过10条

           iLength = LENGTH - 1;

           iSum = iLength * iSMS_Num_9;

       } else if (iContentLength < iSum) {

           // 源短信的长度小于iSum，表示源短信可以被分割的数量小于等于9条

           iLength = LENGTH;

           iSum = iContentLength;

       }

 

       // 短信个数小于10

       String sSMS9 = sSMS.trim().substring(0, iSum);

       String[] aSMS9 = smsSplitByLength(sSMS9, iLength);

 

       if (iContentLength == iSum) {

           List<String> oList = new ArrayList<String>();

           String sTemp;

           final int iSMSNum = aSMS9.length;

           for (int i = 0; i < aSMS9.length; i++) {

              sTemp = "(" + (i + 1) + "/" + iSMSNum + ")" + aSMS9[i];

              oList.add(sTemp);

           }

           String[] aSMS = oList.toArray(new String[0]);

           return aSMS;

       }

 

       String sTemp1 = aSMS9[aSMS9.length - 1];

       String sTemp2 = aSMS9[aSMS9.length - 2];

 

       String sSMS10 = null;

       String[] aSMS10 = null;

       if (sTemp1.length() != sTemp2.length()) {

           String[] aTemp = aSMS9;

           aSMS9 = new String[aTemp.length - 1];

           System.arraycopy(aTemp, 0, aSMS9, 0, aTemp.length - 1);

           sSMS10 = sTemp1 + sSMS.trim().substring(iSum);

           aSMS10 = smsSplitByLength(sSMS10, iLength - 1);

       } else {

           sSMS10 = sSMS.trim().substring(iSum);

           aSMS10 = smsSplitByLength(sSMS10, iLength - 1);

       }

 

       List<String> oList = new ArrayList<String>();

       String sTemp;

       final int iSMSNum = aSMS9.length + aSMS10.length;

       for (int i = 0; i < aSMS9.length; i++) {

           sTemp = "(" + (i + 1) + "/" + iSMSNum + ")" + aSMS9[i];

           oList.add(sTemp);

       }

       for (int i = 0; i < (aSMS10.length); i++) {

           sTemp = "(" + (i + 10) + "/" + iSMSNum + ")" + aSMS10[i];

           oList.add(sTemp);

       }

       String[] aSMS = oList.toArray(new String[0]);

       return aSMS;

    }

 

    /**

     * 以给定的<code> LENGTH </code>分割短信内容，返回分割后的字符串数组<br>

     * <b>注意：返回数组中的最后一个元素的字符串长度不一定等于<code> LENGTH </code>，<br>

     * 即不考虑<code> sSMS.length % LENGTH != 0 </code></b>

     *

     * @param sSMS

     *            短信内容

     * @param LENGTH

     *            每条短信的长度

     * @return 一组短信内容

     */

    private static String[] smsSplitByLength(String sSMS, final int LENGTH) {

       int iContentLength = sSMS.trim().length();

       String sTemp;

       int x = 0;

       int y = 0;

       List<String> l = new ArrayList<String>();

       while (true) {

           y = x + LENGTH;

           if (y > iContentLength)

              y = iContentLength;

           sTemp = sSMS.substring(x, y);

           l.add(sTemp);

           x = y;

           if (x == iContentLength)

              break;

       }

       return l.toArray(new String[0]);

    }