1.Properties中的值替换￥{}或者#{}占位符

String text = "foo=${foo},bar=${bar}";        Properties props = new Properties();        props.setProperty("foo", "foo_value");        props.setProperty("bar", "bar_value");        PropertyPlaceholderHelper helper = new PropertyPlaceholderHelper("${", "}", null, false);        System.out.println( helper.replacePlaceholders(text, props));

2.hashmap或者对象替换￥{}或者#{}占位符

final Map
     
       params = new HashMap<>();        params.put("foo", "bar");        params.put("bar", "bar");        PropertyPlaceholderHelper helper1 = new PropertyPlaceholderHelper("${", "}", null, false);        String s = helper1.replacePlaceholders(text, new PlaceholderResolver() {            @Override            public String resolvePlaceholder(String placeholderName) {                // TODO Auto-generated method stub                return params.get(placeholderName);            }        });        System.out.println(s);