如何获取jar包中resource下的文件

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maven工程打jar包，部署到服务器上以后，获取resource下文件的绝对路径是找不到该文件的

只能用流的方式获取，代码如下：

import lombok.extern.slf4j.Slf4j;import java.io.*;
import java.util.ArrayList;
import java.util.List;/**
* Created by dell on 2019/05/26.
*/
@Slf4j
public class FileTxtHandleUtil { public List<String[]> readTxt(String filePath) {
log.info("txt文件路径:{}", filePath);
try {
List<String[]> result = new ArrayList<>();
InputStream stream = getClass().getClassLoader().getResourceAsStream(filePath);
BufferedReader br = null;
try {
br = new BufferedReader(new InputStreamReader(stream, "UTF-8"));
String lineTxt = null;
while ((lineTxt = br.readLine()) != null) {
String[] dataStr = lineTxt.split("\t");
result.add(dataStr);
}
br.close();
} catch (FileNotFoundException e) {
log.error("FileNotFoundException:" + e);
} catch (IOException e) {
log.error("IOException:" + e);
} finally {
if (br != null) {
try {
br.close();
} catch (IOException e) {
log.error("close br error:" + e);
}
}
}
return result;
} catch (Exception e) {
System.out.println("文件读取错误!");
}
return null;
}}