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Java 执行CMD命令或执行BAT批处理方式

作者：它山之石,可以攻玉　　发布时间：2022-10-15 03:57:38　

标签：Java,CMD命令,BAT,批处理

Java 执行CMD命令或执行BAT批处理

背景

日常开发中总能遇到一些奇怪的需求，例如使用java执行cmd命令或者bat批处理文件，今天就简单记录一下使用过程。

使用

废话不多说直接上代码

import java.io.BufferedReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
public class Cmder {
/**
* 执行一个cmd命令
*
* @param cmdCommand cmd命令
* @return 命令执行结果字符串，如出现异常返回null
*/
public static String executeCmdCommand(String cmdCommand) {
StringBuilder stringBuilder = new StringBuilder();
Process process = null;
try {
process = Runtime.getRuntime().exec(cmdCommand);
BufferedReader bufferedReader = new BufferedReader(
new InputStreamReader(process.getInputStream(), "GBK"));
String line = null;
while ((line = bufferedReader.readLine()) != null) {
stringBuilder.append(line).append(" ");
}
return stringBuilder.toString();
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
/**
* 执行bat文件，
*
* @param file bat文件路径
* @param isCloseWindow 执行完毕后是否关闭cmd窗口
* @return bat文件输出log
*/
public static String executeBatFile(String file, boolean isCloseWindow) {
String cmdCommand = null;
if (isCloseWindow) {
cmdCommand = "cmd.exe /c " + file;
} else {
cmdCommand = "cmd.exe /k " + file;
}
StringBuilder stringBuilder = new StringBuilder();
Process process = null;
try {
process = Runtime.getRuntime().exec(cmdCommand);
BufferedReader bufferedReader = new BufferedReader(
new InputStreamReader(process.getInputStream(), "GBK"));
String line = null;
while ((line = bufferedReader.readLine()) != null) {
stringBuilder.append(line).append(" ");
}
return stringBuilder.toString();
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
/**
* 执行bat文件,新开窗口
*
* @param file bat文件路径
* @param isCloseWindow 执行完毕后是否关闭cmd窗口
* @return bat文件输出log
*/
public static String executeBatFileWithNewWindow(String file, boolean isCloseWindow) {
String cmdCommand;
if (isCloseWindow) {
cmdCommand = "cmd.exe /c start" + file;
} else {
cmdCommand = "cmd.exe /k start" + file;
}
StringBuilder stringBuilder = new StringBuilder();
Process process;
try {
process = Runtime.getRuntime().exec(cmdCommand);
BufferedReader bufferedReader = new BufferedReader(
new InputStreamReader(process.getInputStream(), "GBK"));
String line;
while ((line = bufferedReader.readLine()) != null) {
stringBuilder.append(line).append(" ");
}
return stringBuilder.toString();
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
/**
* 执行bat脚本
*
* @param batScript 脚本内容
* @param location 脚本存储路径
* @return 结果
*/
public static String executeBatScript(String batScript, String location) {
StringBuilder stringBuilder = new StringBuilder();
FileWriter fw = null;
try {
//生成bat文件
fw = new FileWriter(location);
fw.write(batScript);
fw.close();
} catch (IOException e) {
e.printStackTrace();
}
Process process;
try {
process = Runtime.getRuntime().exec(location);
BufferedReader bufferedReader = new BufferedReader(
new InputStreamReader(process.getInputStream(), "GBK"));
String line;
while ((line = bufferedReader.readLine()) != null) {
stringBuilder.append(line).append(" ");
}
return stringBuilder.toString();
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
/**
* 执行脚本,不停止,并输出执行结果
*
* @param batScript 脚本内容
* @param location bat文件生成地址
*/
public void executeBatScriptAlways(String batScript, String location) {
FileWriter fw = null;
try {
//生成bat文件
fw = new FileWriter(location);
fw.write(batScript);
fw.close();
} catch (IOException e) {
e.printStackTrace();
}
StringBuilder stringBuilder = new StringBuilder();
//运行bat文件
Process process;
try {
process = Runtime.getRuntime().exec(location);
BufferedReader bufferedReader = new BufferedReader(
new InputStreamReader(process.getInputStream(), "GBK"));
String line;
while ((line = bufferedReader.readLine()) != null) {
System.out.println(line);
}
} catch (Exception e) {
e.printStackTrace();
}
}
}

Java 执行系统命令

1. windows

1.1 cmd

第一种方法

File dir = new File("D:\\mysql57\\mysql-5.7.29-winx64\\bin");
// String command="netstat -an";
String command = "c:\\windows\\system32\\cmd.exe /c mysqlbinlog ../data/master-bin.000006 | more";
Runtime r = Runtime.getRuntime();
Process p = r.exec(command, null, dir);
BufferedReader br = new BufferedReader(new InputStreamReader(p.getInputStream()));
StringBuffer sb = new StringBuffer();
String inline;
while (null != (inline = br.readLine())) {
sb.append(inline).append("\n");
}
System.out.println(sb.toString());

第二种方法

try {
File dir = new File("D:\\mysql57\\mysql-5.7.29-winx64\\bin");//此处是指定路径
String[] cmd = new String[] { "cmd", "/c",
"mysqlbinlog -v ../data/master-bin.000006 | more"
};// cmd[2]是要执行的dos命令
System.out.println(cmd[2]);
Process process = Runtime.getRuntime().exec(cmd,null,dir);
// 记录dos命令的返回信息
StringBuffer resStr = new StringBuffer();
// 获取返回信息的流
InputStream in = process.getInputStream();
Reader reader = new InputStreamReader(in);
BufferedReader bReader = new BufferedReader(reader);
for (String res = ""; (res = bReader.readLine()) != null;) {
resStr.append(res + "\n");
}
System.out.println(resStr.toString());
bReader.close();
reader.close();
process.getOutputStream().close(); // 不要忘记了一定要关
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}