java 如何在另一个java程序中运行java可执行jar
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/15700879/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
how to run a java executable jar in another java program
提问by Vardhan D G
I know this question has been asked before but those answers didn't provide me an answer.
我知道以前有人问过这个问题，但这些答案没有给我答案。
I want to execute a exec jar file in my java program and get the output from executing jar into a string. Here below are the codes I have used so far without success.
我想在我的 java 程序中执行一个 exec jar 文件，并将执行 jar 的输出转换为字符串。以下是我迄今为止使用的代码，但没有成功。
cmdlink = "java -jar iwtest-mac.jar"+" "+cmd;
System.out.println(cmdlink);
Process process = Runtime.getRuntime().exec(cmdlink);
BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()));
while ((reader.readLine()) != null) {
st = reader.readLine();
}
process.waitFor();
and another code I have tried is as follows:
我尝试过的另一个代码如下：
String cmdlink = "iwtest-mac.jar "+cmd;
ProcessBuilder pb = new ProcessBuilder("java", "-jar", cmdlink); //cmd here is a string that contains inline arguments for jar.
pb.redirectErrorStream(true);
pb.directory(new File("C:\Users\Dharma"));
System.out.println("Directory: " + pb.directory().getAbsolutePath());
Process p = pb.start();
InputStream is = p.getInputStream();
BufferedReader br = new BufferedReader(new InputStreamReader(is));
for (String line = br.readLine(); line != null; line = br.readLine()) {
System.out.println( line );
p.waitFor();
Both of the above are not working for me. Any suggestions are appreciated.
以上两个都不适合我。任何建议表示赞赏。
回答by Mohammad Adil
This works For Me..
这对我有用..
public class JarRunner {
public static void main(String[] args) {
ProcessBuilder pb = new ProcessBuilder("java", "-jar", "C:\JCcc.jar");
pb.directory(new File("C:\"));
try {
Process p = pb.start();
LogStreamReader lsr = new LogStreamReader(p.getInputStream());
Thread thread = new Thread(lsr, "LogStreamReader");
thread.start();
} catch (IOException e) {
e.printStackTrace();
}
}
}
class LogStreamReader implements Runnable {
private BufferedReader reader;
public LogStreamReader(InputStream is) {
this.reader = new BufferedReader(new InputStreamReader(is));
}
public void run() {
try {
String line = reader.readLine();
while (line != null) {
System.out.println(line);
line = reader.readLine();
}
reader.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
This is what the Docs says-
这就是文档所说的-
ProcessBuilder pb = new ProcessBuilder("myCommand", "myArg1", "myArg2");
You can pass any number of arguments in constructor.
您可以在构造函数中传递任意数量的参数。
Read more about process builder here.
在此处阅读有关流程构建器的更多信息。
