Java_CMD
目录
自动化的过程也已经成熟。 无需手动运行所有内容。 使用Java，我们可以运行单个或多个Shell命令，执行Shell脚本，运行终端/命令提示符，设置工作目录以及通过核心类操作环境变量。
1.Runtime.getRuntime().exec()
Process exec(String command)
在单独的进程中执行指定的字符串命令。
Process exec(String[] cmdarray)
在单独的进程中执行指定命令和变量。
Process exec(String[] cmdarray, String[] envp)
在指定环境的独立进程中执行指定命令和变量。
Process exec(String[] cmdarray, String[] envp, File dir)
在指定环境和工作目录的独立进程中执行指定的命令和变量。
Process exec(String command, String[] envp)
在指定环境的单独进程中执行指定的字符串命令。
Process exec(String command, String[] envp, File dir)
在有指定环境和工作目录的独立进程中执行指定的字符串命令。
package util.model;
import java.io.*;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.Map;
public class CnnModelUtilv2 {
private static final String CMD = "./venv/bin/python model_predict.py ";
private static final String MEDICINE_LABLE_FILE_NAME = "/medicine_name-label.txt";
private static final Map<Integer, String> MEDICINE_NAME_MAP = new HashMap<>();
static {
BufferedReader bufferedReader =
new BufferedReader(new InputStreamReader(CnnModelUtilv2.class.getResourceAsStream(MEDICINE_LABLE_FILE_NAME)));
bufferedReader.lines().forEach(v -> {
String[] split = v.split(",");
MEDICINE_NAME_MAP.put(Integer.valueOf(split[1]), split[0]);
});
}
public static Map<String, Float> medicineNamePredict(File file) throws IOException {
Process process = Runtime.getRuntime().exec(CMD + file.getAbsolutePath(), null,
new File("./medicine-runtime-data/script"));
BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()));
String line = reader.readLine();
System.out.println(line);
Map<String, Float> medicinePredict = new LinkedHashMap<>();
if (line != null && !"null".equals(line)) {
for (String s : line.split(",")) {
String[] split = s.split(":");
medicinePredict.put(MEDICINE_NAME_MAP.get(Integer.valueOf(split[0])), Float.valueOf(split[1]));
}
return medicinePredict;
}
return null;
}
}
2. 调用shell命令
private void callCMD(String tarName, String fileName, String... workspace){
try {
String cmd = "tar -cf" + tarName + " " + fileName;
// String[] cmd = {"tar", "-cf", tarName, fileName};
File dir = null;
if(workspace[0] != null){
dir = new File(workspace[0]);
System.out.println(workspace[0]);
}
process = Runtime.getRuntime().exec(cmd, null, dir);
// process = Runtime.getRuntime().exec(cmd);
int status = process.waitFor();
if(status != 0){
System.err.println("Failed to call shell's command and the return status's is: " + status);
}
}
catch (Exception e){
e.printStackTrace();
}
}
3. 调用shell脚本
#!/usr/bin/env bash
args=1
if [ $# -eq 1 ];then
args=$1
echo "The argument is: $args"
fi
echo "This is a $call"
start=`date +%s`
sleep 3s
end=`date +%s`
cost=$((($end - $start) * $args * $val))
echo "Cost Time: $cost"
private void callScript(String script, String args, String... workspace){
try {
String cmd = "sh " + script + " " + args;
// String[] cmd = {"sh", script, "4"};
File dir = null;
if(workspace[0] != null){
dir = new File(workspace[0]);
System.out.println(workspace[0]);
}
String[] evnp = {"val=2", "call=Bash Shell"};
process = Runtime.getRuntime().exec(cmd, evnp, dir);
// process = Runtime.getRuntime().exec(cmd);
BufferedReader input = new BufferedReader(new InputStreamReader(process.getInputStream()));
String line = "";
while ((line = input.readLine()) != null) {
System.out.println(line);
}
input.close();
}
catch (Exception e){
e.printStackTrace();
}
}
public static void main(String[] args) {
// TODO Auto-generated method stub
CallShell call = new CallShell();
call.callScript("test.sh", "4", "/root/experiment/");
}