src/org/nutz/lang/Nums.java
public static int[] splitInt(String str) {
        String[] ss = Strings.splitIgnoreBlank(str);
        if (null == ss)
            return null;
        int[] ns = new int[ss.length];
        for (int i = 0; i < ns.length; i++) {
            try {
                ns[i] = Integer.parseInt(ss[i]);
            }
            catch (NumberFormatException e) {
                ns[i] = -1;
            }
        }
        return ns;
    }
public static int[] splitInt(String str) {
        String[] ss = Strings.splitIgnoreBlank(str);
        if (null == ss)
            return null;
        int[] ns = new int[ss.length];
        for (int i = 0; i < ns.length; i++) {
            try {
                ns[i] = Integer.parseInt(ss[i]);
            }
            catch (NumberFormatException e) {
                ns[i] = -1;
            }
        }
        return ns;
    }
将一个字符串变成一个整型数组，如果字符串不符合规则，对应的元素为 -1 <br>
比如：

<pre>
"3,4,9"   =>  [  3, 4, 9 ]
"a,9,100" =>  [ -1, 9, 100 ]
</pre>

@param str
半角逗号分隔的数字字符串
@return 数组