net.ymate.platform.commons.util.ExpressionUtils Maven / Gradle / Ivy
/*
* Copyright 2007-2107 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.ymate.platform.commons.util;
import java.util.regex.Matcher;
/**
*
* ExpressionUtils
*
*
* 字符串表达式工具类，用于处理${variable}字符替换；
* 例: I am ${name},and sex is ${sex}.
* name=Henry,sex=M
* result:I am Henry,and sex is M.
*
*
* @author 刘镇([email protected])
* @version 0.0.0
*
*
* 版本号 动作 修改人 修改时间
*
*
*
* 0.0.0
* 创建类
* 刘镇
* 2010-12-20上午11:37:00
*
*
*/
public class ExpressionUtils {
private final static String __pre = "\\$\\{";
private final static String __suf = "\\}";
private String __result;
/**
* 创建表达式工具类实例对象
*
* @param expressionStr
* @return
*/
public static ExpressionUtils bind(String expressionStr) {
return new ExpressionUtils(expressionStr);
}
/**
* 构造器
*/
private ExpressionUtils(String expressionStr) {
this.__result = expressionStr; // Matcher.quoteReplacement(expressionStr);
}
/**
* 获取结果
* @return
*/
public String getResult() {
return this.__result;
}
/**
* 设置变量值
* @param key 变量名称
* @param value 变量值
* @return
*/
public ExpressionUtils set(String key, String value) {
String namePattern = __pre + key + __suf;
this.__result = this.__result.replaceAll(namePattern, Matcher.quoteReplacement(value));
return this;
}
}