Simple Java API that allows to interact with PowerShell console
PowerShell.openSession()
.executeCommandAndChain("Get-Process", (res -> System.out.println("List Processes:" + res.getCommandOutput())))
.executeCommandAndChain("Get-WmiObject Win32_BIOS", (res -> System.out.println("BIOS information:" + res.getCommandOutput())))
.close();The version 3 of JPowerShell includes an important revision and rewrite of most of the code that improves performance and stability.
Check all the new features here: https://github.com/profesorfalken/jPowerShell/wiki/New-3.0-version-of-PowerShell
To install jPowerShell you can add the dependecy to your software project management tool: https://search.maven.org/artifact/com.profesorfalken/jPowerShell/3.1.1/jar
For example, for Maven you have just to add to your pom.xml:
<dependency>
<groupId>com.profesorfalken</groupId>
<artifactId>jPowerShell</artifactId>
<version>3.1.1</version>
</dependency>
Instead, you can direct download the JAR file and add it to your classpath. https://repo1.maven.org/maven2/com/profesorfalken/jPowerShell/3.1.1/jPowerShell-3.1.1.jar
If you only need to execute a single command, this is the quickest way to do it.
//Execute a command in PowerShell session
PowerShellResponse response = PowerShell.executeSingleCommand("Get-Process");
//Print results
System.out.println("List Processes:" + response.getCommandOutput());If you have to execute multiple commands, it is recommended to reuse the same session in order to be more efficient (each session has to open a PowerShell console process in the background).
//Creates PowerShell session (we can execute several commands in the same session)
try (PowerShell powerShell = PowerShell.openSession()) {
//Execute a command in PowerShell session
PowerShellResponse response = powerShell.executeCommand("Get-Process");
//Print results
System.out.println("List Processes:" + response.getCommandOutput());
//Execute another command in the same PowerShell session
response = powerShell.executeCommand("Get-WmiObject Win32_BIOS");
//Print results
System.out.println("BIOS information:" + response.getCommandOutput());
} catch(PowerShellNotAvailableException ex) {
//Handle error when PowerShell is not available in the system
//Maybe try in another way?
}You can also choose to execute the same commands with a more fluent style using the executeCommandAndChain method:
PowerShell.openSession()
.executeCommandAndChain("Get-Process", (res -> System.out.println("List Processes:" + res.getCommandOutput())))
.executeCommandAndChain("Get-WmiObject Win32_BIOS", (res -> System.out.println("BIOS information:" + res.getCommandOutput())))
.close();You can easily configure the jPowerShell session:
- By project creating a jpowershell.properties file in the classpath of your project and settings the variables you want to override.
- By call, using a map that can be chained to powershell call.
For example:
//Set the timeout when waiting for command to terminate to 30 seconds instead of 10 (default value)
Map<String, String> myConfig = new HashMap<>();
myConfig.put("maxWait", "30000");
response = powerShell.configuration(myConfig).executeCommand("Get-WmiObject Win32_BIOS");The variables that can be configured in jPowerShell are:
waitPause: the pause in ms between each loop pooling for a response. Default value is 10
maxWait: the maximum wait in ms for the command to execute. Default value is 10000
tempFolder: if you set this variable jPowerShell will use this folder in order to store temporary the scripts to execute. By default the environment variable java.io.tmpdir will be used.
If the PowerShell executable has a different name/path on your system, you can change it when opening a new session:
//Creates PowerShell session
try (PowerShell powerShell = PowerShell.openSession("myCustomPowerShellExecutable.exe")) {
[...]In order to execute a PowerShell Script it is recommended to use the executeScript() method instead of executeCommand():
try (PowerShell powerShell = PowerShell.openSession()) {
//Increase timeout to give enough time to the script to finish
Map<String, String> config = new HashMap<String, String>();
config.put("maxWait", "80000");
//Execute script
response = powerShell.configuration(config).executeScript("./myPath/MyScript.ps1");
//Print results if the script
System.out.println("Script output:" + response.getCommandOutput());
} catch(PowerShellNotAvailableException ex) {
//Handle error when PowerShell is not available in the system
//Maybe try in another way?
}In order to execute a PowerShell Script that is bundled inside a jar you must use a BufferedReader to load the resource:
PowerShell powerShell = PowerShell.openSession();
String script = "resourcePath/MyScript.ps1"
String scriptParams = "-Parameter value"
//Read the resource
BufferedReader srcReader = new BufferedReader(
new InputStreamReader(getClass().getResourceAsStream(script)));
if (scriptParams != null && !scriptParams.equals("")) {
response = powerShell.executeScript(srcReader, scriptParams);
} else {
response = powerShell.executeScript(srcReader);
}
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