com.baomidou.framework.common.JarHelper.java Source code

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Here is the source code for com.baomidou.framework.common.JarHelper.java

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/**
 * Copyright (c) 2011-2014, hubin (jobob@qq.com).
 *
 * 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.baomidou.framework.common;

import org.apache.commons.lang.StringUtils;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.List;
import java.util.jar.JarEntry;
import java.util.jar.JarFile;

/**
 * <p>
 * Jar 
 * </p>
 * 
 * @author hubin
 * @Date 2016-04-09
 */
public class JarHelper {

    public static List<String> listFiles(JarFile jarFile, String endsWith) {
        if (jarFile == null || StringUtils.isEmpty(endsWith)) {
            return null;
        }
        List<String> files = new ArrayList<String>();
        Enumeration<JarEntry> entries = jarFile.entries();
        while (entries.hasMoreElements()) {
            JarEntry entry = entries.nextElement();
            String name = entry.getName();
            if (name.endsWith(endsWith)) {
                files.add(name);
            }
        }
        return files;
    }

    public static List<String> readLines(JarFile jarFile, String fileName) throws IOException {
        if (jarFile == null || StringUtils.isEmpty(fileName)) {
            return null;
        }
        List<String> lines = new ArrayList<String>();
        JarEntry entry = jarFile.getJarEntry(fileName);
        InputStream inputStream = jarFile.getInputStream(entry);
        InputStreamReader inputStreamReader = new InputStreamReader(inputStream);
        BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
        String line;
        while ((line = bufferedReader.readLine()) != null) {
            lines.add(line);
        }
        bufferedReader.close();
        inputStreamReader.close();
        return lines;
    }

}