输出不同路径下的所有文件名，放到map中

map中
key 父路径
value 该路径下所有的文件

package com.sitech.ddoe.om.db.relational.test;import java.io.File;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map;import com.fasterxml.jackson.core.JsonProcessingException;import com.fasterxml.jackson.databind.ObjectMapper;public class Test {    public static void main(String[] args) throws JsonProcessingException {        Map map = new HashMap<>();        findFiles(map, "C:\\Users\\Administrator\\Desktop\\obj-conf-data");        System.out.println(new ObjectMapper().writeValueAsString(map));    }    public static void findFiles(Map map, String path) {        File file = new File(path);        File[] childFiles = file.listFiles();// 找出所有子目录        List fileList = new ArrayList<>();        for (int i = 0; childFiles != null && i < childFiles.length; i++) {            if (childFiles[i].isDirectory()) {// 如果是目录的话，则调用自身                findFiles(map, childFiles[i].getPath());            } else {                fileList.add(childFiles[i].getAbsolutePath());                String parPath = childFiles[i].getParent();                map.put(parPath, fileList);            }        }    }}

最终的效果：

{    "C:\Users\Administrator\Desktop\obj-conf-data\crm\com\sitech\ddoe\client\api\objopt\sample": [        "C:\Users\Administrator\Desktop\obj-conf-data\crm\com\sitech\ddoe\client\api\objopt\sample\Student.xml",        "C:\Users\Administrator\Desktop\obj-conf-data\crm\com\sitech\ddoe\client\api\objopt\sample\User.xml"    ],    "C:\Users\Administrator\Desktop\obj-conf-data\gg": [        "C:\Users\Administrator\Desktop\obj-conf-data\gg\ddd.txt",        "C:\Users\Administrator\Desktop\obj-conf-data\gg\hh.txt"    ],    "C:\Users\Administrator\Desktop\obj-conf-data\order\com\sitech\ddoe\client\api\objopt\sample": [        "C:\Users\Administrator\Desktop\obj-conf-data\order\com\sitech\ddoe\client\api\objopt\sample\Student.xml",        "C:\Users\Administrator\Desktop\obj-conf-data\order\com\sitech\ddoe\client\api\objopt\sample\User.xml"    ]}