java根据文件全路径读取文件中的内容-蒲公英云

java根据文件全路径读取文件中的内容

需要:
根据文件全路径读取文件中的内容

package data.test.demo;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStreamReader;
public class Test { 
    public static void main(String[] args) { 
        String fullFilePath = "D:\\test\\a.txt";
        String base64Image = readFileByPath(fullFilePath);
        System.out.println(base64Image);
    }
    public static String readFileByPath(String fullFilePath) { 
        StringBuilder result = new StringBuilder();
        try { 
            File file = new File(fullFilePath);
            FileInputStream fileInputStream = new FileInputStream(file);
            InputStreamReader inputStreamReader = new InputStreamReader(fileInputStream, "UTF-8");
            BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
            String line = null;
            while ((line = bufferedReader.readLine()) != null) { 
                result.append(line);
            }
            bufferedReader.close();
        } catch (Exception e) { 
            e.printStackTrace();
        }
        return result.toString();
    }
}