常用经典java代码集锦

1.需要在for循环中进行判断，如拼接http参数

StringBuilder params = new StringBuilder();

int index = 0;

for (Object param : request.getParameterMap().keySet()) {

params.append((index++ == 0 ? "" : "&") + param + "=");

params.append(StringUtils.abbr(StringUtils.endsWithIgnoreCase((String) param, "password") ? "" : request.getParameter((String) param), 100));

}