无法正确对齐输出

Question

列表项

import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.io.InputStreamReader;
public class test104 {
    public String[] b=new String[200];
    public String flex(String ps) throws IOException
    {   
        String result="";
        File file=new File("C:\ProgramData");

        ProcessBuilder pb = new ProcessBuilder("cmd","/C",ps);


        pb.directory(file);

        Process p = pb.start();

        BufferedReader reader = new BufferedReader(new InputStreamReader(
                p.getInputStream()));
        String readline;
        //result=reader.readLine();
        int i=0;
        result=reader.readLine();
        StringBuilder sb = new StringBuilder();
        while ((readline = reader.readLine()) != null) {
            sb.append(readline);
            System.out.println(readline);
            b[i]=readline;
            i++;
            System.out.println("<br>");
        }

        try {
        int exitValue = p.waitFor();
        } 

        catch (InterruptedException e) {
        e.printStackTrace();
        }


        finally{
        //out.close();  
        } 

        return sb.toString();
    }}

    Print.jsp

    </head>
    <%@ page import="com.test104" %>
    <body>
    <% 
     com.test104 f1=new test104();
     int j=0;
     String k=f1.flex("dir");
     String readline;
     out.println(k);

     %>

输出未对齐直线。它应该一个接一个地出现。！

Here 是 jsp 页面中的输出。

Answer 1

沿

行的代码

 StringBuilder sb = new StringBuilder();
 while ((readline = reader.readLine()) != null) {
     sb.append(readline);
 }
 someOutputMethod( sb.toString() );

将从 reader 读取的输入中删除所有行尾。您必须在每行之后或您认为有必要时附加行尾 '\n'。

无法正确对齐输出

Not able to get output properly aligned

java

stringbuilder

jsp

bufferedreader