java读取文件夹下的所有文件；java执行linux命令

一、
//文件夹下所有文件名称集合
List files = new ArrayList();
//填写服务器上文件的路径
File file = new File("/path...");
//获取所有文件，放到文件数组里
File[] fileList = file.listFiles();
for (int i = 0;i 
  
if (files.size() <= 0){
    return;
}else{        
    for (String fileName: files) {
      //TODO 通过文件名称 循环获取文件内容
    }
}
 
  
二、
 
  
/**
 
  
* 执行linux命令的工具类
 
  
*/
 
  
public static String executeLinuxCmd(String cmd) throws IOException {
    String returnString = "";
    Process pro = null;
    Runtime runTime = Runtime.getRuntime();
    if (runTime == null) {
        System.err.println("Create runtime false!");
    }
    System.out.println("开始转换");
    pro = runTime.exec(cmd);
    BufferedReader input = new BufferedReader(new InputStreamReader(pro.getInputStream()));
    PrintWriter output = new PrintWriter(new OutputStreamWriter(pro.getOutputStream()));
    String line;
    while ((line = input.readLine()) != null) {
        System.out.println("line: " + line);
        returnString = returnString + line + "\n";
    }
    System.out.println("返回值:" + returnString);
    input.close();
    output.close();
    pro.destroy();
    return returnString;
}