对html中特殊的符号进行过滤处理_Filter类

package util;

public class HtmlFilter {

    public static String htmlFilter(String content) {
        //定义char数组
        char chars[] = new char[content.length()];
        // <a href="">点点</a> <a href="" >
        // 把字符串直接复制到chars[]数组中
        content.getChars(0, content.length(), chars, 0);
        // 重新拼接
        StringBuffer sb = new StringBuffer();
        // 循环
        for (int index = 0; index < chars.length; index++) {
            // 获取指定值
            char c = chars[index];
            switch (c) {
            case '>':
                sb.append(">");
                break;
            case '<':
                sb.append("<");
                break;
            default:
                sb.append(c);
                break;
            }
        }
        return sb.toString();
    }

}