java自动替换变量表达式 例如包含{{}}，${}

**

1.接口 ReplaceVariableService

**

public interface ReplaceVariableService {
		String relpacePlaceholader(String source）;
}

可传实现类用到的参数，source代表要替换的路径，例如：{{ip}}{{port}} =替换成===》ipport
可含有一个或多个

2.实现类 ReplaceVariable

@Service
public class ReplaceVariable implements ReplaceVariableService{
	//前缀以及后缀 参数可写成 想要根据什么替换
	private static final String pre="{{";
    private static final String suff="}}";
   
    private PropertyPlaceholderHelper propertyPlaceholderHelper = new PropertyPlaceholderHelper(pre,suff);;
    public String relpacePlaceholader(String source){
        return  propertyPlaceholderHelper.replacePlaceholders(source,placeholderName -> {
        try {
			return  placeholderName == null ? "值为空！" : placeholderName;
		} catch (DataException e) {
			e.printStackTrace();
		}
           return "";
        });
    }

**

3.可直接调用

String suffixPath = replaceVariable.relpacePlaceholader("{{ip}}port{{aa}}");