[Java] 解决java 命令行乱码的问题

-Dfile.encoding=GBK -Ddefault.client.encoding=GBK -Duser.language=zh -Duser.region=CN

public static void main(String[] args) { 
    try { 
    // 执行ping命令 
    Process process = Runtime.getRuntime().exec("cmd /c e:&dir"); 
    BufferedReader br = new BufferedReader(
 new InputStreamReader( process.getInputStream(), Charset.forName("GBK") )
); 
    String line = null; 
    while ((line = br.readLine()) != null) { 
      System.out.println(line); 
    } 
    } catch (IOException e) { 
    e.printStackTrace(); 
    } 
  }

package net.bigwrok;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.nio.charset.Charset;
public class Test2_net {
  public static void main(String[] args) {  
  BufferedReader br = null;
  try {
    Process p = Runtime.getRuntime().exec("ping 127.0.0.1");
    br = new BufferedReader(new InputStreamReader(p.getInputStream(),Charset.forName("GBK")));
    String line = null;
    StringBuilder sb=new StringBuilder();
    while ((line = br.readLine()) != null) {
    sb.append(line+"\n");
    }
    System.out.println(sb.toString()); 
    
  } catch (Exception e) {
    e.printStackTrace();
  } finally {
    if (br != null) {
    try {
      br.close();
    } catch (Exception e) {
      e.printStackTrace();
    }
    }
  } 
  }
}