springboot中读取resources下文件方法,避免文件无法找到异常

通过ClassPathResource获取文件路径,避免由于springboot项目打包后文件无法再到异常

package com.springboot_call_police.unit;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import org.springframework.core.io.ClassPathResource;

import java.io.*;

public class ReadJson {
    public String ReadFile(String Path){
        BufferedReader reader = null;
        String laststr = "";
        try{
            FileInputStream fileInputStream = new FileInputStream(Path);
            InputStreamReader inputStreamReader = new InputStreamReader(fileInputStream, "UTF-8");
            reader = new BufferedReader(inputStreamReader);
            String tempString = null;
            while((tempString = reader.readLine()) != null){
                laststr += tempString;
            }
            reader.close();
        }catch(IOException e){
            e.printStackTrace();
        }finally{
            if(reader != null){
                try {
                    reader.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
        return laststr;
    }
    public String urlUnit(int i){
        String urlseed= null;
        try {
            //获取resources资源文件下的文件
            ClassPathResource classPathResource = new ClassPathResource("json/UrlSeed.json");
            //转文件类型
            File file = classPathResource.getFile();
            //通过获得的文件路径,读取文件中的内容
            urlseed=ReadFile(file.getPath());
        } catch (Exception e) {
            e.printStackTrace();
        }
        return urlseed;
    }
}

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