com.alilitech.integration.jpa.util.CommonUtils Maven / Gradle / Ivy
/**
* Copyright 2017-2020 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 com.alilitech.integration.jpa.util;
/**
*
* @author Zhou Xiaoxiang
* @since 1.0
*/
public class CommonUtils {
/**
* 将驼峰标识转换为下划线
* @param text
* @return
*/
public static String camelToUnderline(String text) {
if (text == null || "".equals(text.trim())) {
return "";
}
StringBuilder result = new StringBuilder(text.length() + 1);
result.append(text.substring(0, 1));
for (int i = 1; i < text.length(); i++) {
if (!Character.isLowerCase(text.charAt(i))) {
result.append('_');
}
result.append(text.substring(i, i + 1));
}
return result.toString().toLowerCase();
}
/**
* 将下划线标识转换为驼峰
* @param text
* @return
*/
public static String underlineToCamel(String text) {
if (text == null || "".equals(text.trim())) {
return "";
}
int length = text.length();
StringBuilder result = new StringBuilder();
for (int i = 0; i < length; i++) {
char c = text.charAt(i);
if (c == '_') {
if (++i < length) {
result.append(Character.toUpperCase(text.charAt(i)));
}
} else {
result.append(c);
}
}
return result.toString();
}
}