velocity 的 escape实现

Posted 2020-09-30 范世强的笔记（SEC-fsq）

EscapehtmlReference的escape方法调用以下方法实现： org.apache.commons.lang.Entities.HTML40.escape(writer, string);
代码如下：

public void escape(Writer writer, String str) throws IOException {
    int len = str.length();

    for(int i = 0; i < len; ++i) {
        char c = str.charAt(i);
        String entityName = this.entityName(c);
        if(entityName == null) {
            if(c > 127) {
                writer.write("&#");
                writer.write(Integer.toString(c, 10));
                writer.write(59);   //就是个分号
            } else {
                writer.write(c);
            }
        } else {
            writer.write(38);
            writer.write(entityName);
            writer.write(59);
        }
    }

}