I have to run a run a python script from a maven project. I created a temporary class with main method to check if it works as expected, used the process builder and it works if I specify the absolute path of the python script and then run the java class from eclipse using RUN as Java application.
If I change it getClass().getResourceAsStream("/scripts/script.py"), it throws an exception as it cannot locate the python script.
What would be the best place to place the python script and how can I access it in the Java class without specifying the complete path. Since I am new to maven, it could be due to the method used to execute the Java program.
package discourse.apps.features;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.json.simple.JSONObject;
import org.json.simple.parser.JSONParser;
import org.json.simple.parser.ParseException;
public class Test {
protected String scriptPath = "/Users/user1/project1/scripts/script.py";
protected String python3Path = "/Users/user1/.virtualenvs/python3/bin/python3";
public static void main(String[] args) throws IOException {
new Test().score();
}
public JSONObject score() {
String text1="a";
String text2="b";
JSONObject rmap =null;
try
{
String line= null;
String writedir=System.getProperty("user.dir")+ "/Tmp";
String pbCommand[] = { python3Path, scriptPath,"--stringa", text1, "--stringb",text2,"--writedir", writedir };
ProcessBuilder pb = new ProcessBuilder(pbCommand);
Process p = pb.start();
InputStream is = p.getInputStream();
InputStreamReader isr = new InputStreamReader(is);
BufferedReader br = new BufferedReader(isr);
while ((line = br.readLine()) != null) {
JSONParser parser = new JSONParser();
rmap= (JSONObject) parser.parse(line);
}
} catch (IOException | ParseException ioe) {
System.err.println("Error running script");
ioe.printStackTrace();
System.exit(0);
}
return rmap;
}
}
Here is the output from pb command
pbCommand[0]:/Users/user1/.virtualenvs/python3/bin/python3
pbCommand[1]:displays the complete python script
import os,sys
from pyrouge import Rouge155
import json
from optparse import OptionParser
def get_opts():
parser = OptionParser()
parser.add_option("--stringa", dest="str_a",help="First string")
parser.add_option("--stringb", dest= "str_b",help="second string")
parser.add_option("--writedir", dest="write_dir", help="Tmp write directory for rouge")
(options, args) = parser.parse_args()
if options.str_a is None:
print("Error: requires string")
parser.print_help()
sys.exit(-1)
if options.str_b is None:
print("Error:requires string")
parser.print_help()
sys.exit(-1)
if options.write_dir is None:
print("Error:requires write directory for rouge")
parser.print_help()
sys.exit(-1)
return (options, args)
def readTextFile(Filename):
f = open(Filename, "r", encoding='utf-8')
TextLines=f.readlines()
f.close()
return TextLines
def writeTextFile(Filename,Lines):
f = open(Filename, "w",encoding='utf-8')
f.writelines(Lines)
f.close()
def rougue(stringa, stringb, writedirRouge):
newrow={}
r = Rouge155()
count=0
dirname_sys= writedirRouge +"rougue/System/"
dirname_mod=writedirRouge +"rougue/Model/"
if not os.path.exists(dirname_sys):
os.makedirs(dirname_sys)
if not os.path.exists(dirname_mod):
os.makedirs(dirname_mod)
Filename=dirname_sys +"string_."+str(count)+".txt"
LinesA=list()
LinesA.append(stringa)
writeTextFile(Filename, LinesA)
LinesB=list()
LinesB.append(stringb)
Filename=dirname_mod+"string_.A."+str(count)+ ".txt"
writeTextFile(Filename, LinesB)
r.system_dir = dirname_sys
r.model_dir = dirname_mod
r.system_filename_pattern = 'string_.(\d+).txt'
r.model_filename_pattern = 'string_.[A-Z].#ID#.txt'
output = r.convert_and_evaluate()
output_dict = r.output_to_dict(output)
newrow["rouge_1_f_score"]=output_dict["rouge_1_f_score"]
newrow["rouge_2_f_score"]=output_dict["rouge_2_f_score"]
newrow["rouge_3_f_score"]=output_dict["rouge_3_f_score"]
newrow["rouge_4_f_score"]=output_dict["rouge_4_f_score"]
newrow["rouge_l_f_score"]=output_dict["rouge_l_f_score"]
newrow["rouge_s*_f_score"]=output_dict["rouge_s*_f_score"]
newrow["rouge_su*_f_score"]=output_dict["rouge_su*_f_score"]
newrow["rouge_w_1.2_f_score"]=output_dict["rouge_w_1.2_f_score"]
rouge_dict=json.dumps(newrow)
print (rouge_dict)
def run():
(options, args) = get_opts()
stringa=options.str_a
stringb=options.str_b
writedir=options.write_dir
rougue(stringa, stringb, writedir)
if __name__ == '__main__':
run()
pbCommand[2]:--stringa
pbCommand[3]:a
pbCommand[4]:--stringb
pbCommand[5]:b
pbCommand[6]:--writedir
pbCommand[7]:/users/user1/project1/Tmp
Put the script in the main/resources folder it will then be copied to the target folder.
Then make sure you use something like the com.google.common.io.Resources class, which you can add with
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava-io</artifactId>
<version>r03</version>
</dependency>
I then have a class like this which helps to convert resource files to Strings:
import java.net.MalformedURLException;
import java.net.URI;
import java.net.URL;
import com.google.common.base.Charsets;
import com.google.common.io.Resources;
public class FileUtil
{
public static String convertResourceToString(URL url)
{
try
{
return Resources.toString(url, Charsets.UTF_8);
}
catch (Exception e)
{
return null;
}
}
public static String convertResourceToString(String path)
{
return convertResourceToString(Resources.getResource(path));
}
public static String convertResourceToString(URI url)
{
try
{
return convertResourceToString(url.toURL());
}
catch (MalformedURLException e)
{
return null;
}
}
}
Some advice if you are learning maven try using it instead of the IDE to run and package your application, that is what it is suppose to do. Then once you are confident that the application will function as a packaged jar then just use the IDE to run it.
Related
Let's say I have theese words in a text file
Dictionary.txt
artificial
intelligence
abbreviation
hybrid
hysteresis
illuminance
identity
inaccuracy
impedance
impenetrable
imperfection
impossible
independent
How can I make each word a different object and print them on the console?
You can simple use Scanner.nextLine(); function.
Here is the following code which can help
also import the libraries
import java.util.Scanner;
import java.io.File;
import java.util.Arrays;
Use following code:-
String []words = new String[1];
try{
File file = new File("/path/to/Dictionary.txt");
Scanner scan = new Scanner(file);
int i=0;
while(scan.hasNextLine()){
words[i]=scan.nextLine();
i++;
words = Arrays.copyOf(words,words.legnth+1); // Increasing legnth of array with 1
}
}
catch(Exception e){
System.out.println(e);
}
You must go and research on Scanner class
This is a very simple solution using Files:
package org.kodejava.io;
import java.net.URI;
import java.nio.charset.Charset;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.List;
import java.util.Objects;
public class ReadFileAsListDemo {
public static void main(String[] args) {
ReadFileAsListDemo demo = new ReadFileAsListDemo();
demo.readFileAsList();
}
private void readFileAsList() {
String fileName = "Dictionary.txt";
try {
URI uri = Objects.requireNonNull(this.getClass().getResource(fileName)).toURI();
List<String> lines = Files.readAllLines(Paths.get(uri),
Charset.defaultCharset());
for (String line : lines) {
System.out.println(line);
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
Source: https://kodejava.org/how-do-i-read-all-lines-from-a-file/
This is another neat solution using buffered reader:
import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* BufferedReader and Scanner can be used to read
line by line from any File or
* console in Java.
* This Java program
demonstrate line by line reading using BufferedReader in Java
*
* #author Javin Paul
*/
public class BufferedReaderExample {
public static void main(String args[]) {
//reading file line by line in Java using BufferedReader
FileInputStream fis = null;
BufferedReader reader = null;
try {
fis = new FileInputStream("C:/sample.txt");
reader = new BufferedReader(new InputStreamReader(fis));
System.out.println("Reading
File line by line using BufferedReader");
String line = reader.readLine();
while(line != null){
System.out.println(line);
line = reader.readLine();
}
} catch (FileNotFoundException ex) {
Logger.getLogger(BufferedReaderExample.class.getName()).log(Level.SEVERE, null, ex);
} catch (IOException ex) {
Logger.getLogger(BufferedReaderExample.class.getName()).log(Level.SEVERE, null, ex);
} finally {
try {
reader.close();
fis.close();
} catch (IOException ex) {
Logger.getLogger(BufferedReaderExample.class.getName()).log(Level.SEVERE, null, ex);
}
}
}
Source: https://javarevisited.blogspot.com/2012/07/read-file-line-by-line-java-example-scanner.html#axzz7lrQcYlyy
These are all good answers. The OP didn't state what release of Java they require, but in modern Java I'd just use:
import java.nio.file.*;
public class x {
public static void main(String[] args) throws java.io.IOException {
Files.lines(Path.of("/path/to/Dictionary.txt")).forEach(System.out::println);
}
}
I need to create a utility, which downloads the files from the box folder. But I am unable to get it working though:
package com.box.sdk.example;
import com.box.sdk.BoxConfig;
import com.box.sdk.BoxDeveloperEditionAPIConnection;
import com.box.sdk.BoxFile;
import com.box.sdk.BoxFolder;
import com.box.sdk.BoxItem;
import java.io.BufferedReader;
import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.charset.Charset;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
public class PlayGround {
public static void main(String[] args) {
Path configPath = Paths.get("config.json");
Path currentDir = Paths.get("").toAbsolutePath();
try (BufferedReader reader = Files.newBufferedReader(configPath, Charset.forName("UTF-8"))) {
BoxConfig boxConfig = BoxConfig.readFrom(reader);
BoxDeveloperEditionAPIConnection client = BoxDeveloperEditionAPIConnection.getAppEnterpriseConnection(boxConfig);
String folderId = "125601757844";
BoxFolder folder = new BoxFolder(client, folderId);
String folderName = folder.getInfo().getName();
Path localFolderPath = currentDir.resolve(Paths.get(folderName));
if (!Files.exists(localFolderPath)) {
localFolderPath = Files.createDirectory(localFolderPath);
} else {
localFolderPath = resetLocalFolder(localFolderPath);
}
for (BoxItem.Info itemInfo : folder) {
if (itemInfo instanceof BoxFile.Info) {
BoxFile.Info fileInfo = (BoxFile.Info) itemInfo;
BoxFile file = new BoxFile(client, fileInfo.getID());
String localFilePath = localFolderPath.resolve(Paths.get(fileInfo.getName())).toAbsolutePath()
.toString();
FileOutputStream stream = new FileOutputStream(localFilePath);
file.download(stream);
stream.close();
}
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
static Path resetLocalFolder(Path localFolderPath) throws IOException {
Files.list(localFolderPath).forEach(file -> {
System.out.println(file.getFileName());
try {
Files.delete(file.toAbsolutePath());
} catch (IOException e) {
}
});
Files.delete(localFolderPath);
localFolderPath = Files.createDirectory(localFolderPath);
return localFolderPath;
}
}
When I run this code, I get the following exception:
Exception in thread "main" com.box.sdk.BoxAPIResponseException: The API returned an error code [404 | lsgp4zgkfg6qipxg.0d094ed7daa5f78921603840e0fa470e1] not_found - Not Found
at com.box.sdk.BoxAPIResponse.<init>(BoxAPIResponse.java:92)
at com.box.sdk.BoxJSONResponse.<init>(BoxJSONResponse.java:32)
at com.box.sdk.BoxAPIRequest.trySend(BoxAPIRequest.java:680)
at com.box.sdk.BoxAPIRequest.send(BoxAPIRequest.java:382)
at com.box.sdk.BoxAPIRequest.send(BoxAPIRequest.java:349)
at com.box.sdk.BoxFolder.getInfo(BoxFolder.java:289)
at com.box.sdk.example.PlayGround.main(PlayGround.java:26)
Note: I am able to run the above code, by using developer token, which lasts for 1 hour, but I can't build my production application on such volatile code.
BoxAPIConnection client = new BoxAPIConnection("3i8b5sPnxUotd5etDuUkzGjXXzBphty9");
I have a scenario where to test the api using the payload coming from text file.Each line in file represents one payload.How can I dynamically generate test cases based on the above scenario.
I tried as below calling one test from other ,but i can only see paraent test passed.
import com.jayway.restassured.http.ContentType;
import com.jayway.restassured.response.Response;
import org.junit.Before;
import org.junit.Test;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import static com.jayway.restassured.RestAssured.given;
public class ExampleTest
{
private TestUtil testUtil;
String payload;
#Before
public void init()
{
testUtil = new TestUtil();
}
#Test
public void runAllTests() throws IOException
{
List<String> request = getFileDataLineByLine();
for(String fileRequest:request)
{
payload=fileRequest;
if(null!=payload) {
testExampleTest();
}
}
}
#Test
public void testExampleTest()
{
String uri = "http://localhost:8080/url";
Response response = given()
.contentType(ContentType.JSON)
.body(payload)
.post(uri)
.then()
.statusCode(200)
.extract()
.response();
}
private List<String> getFileDataLineByLine() throws IOException {
File file = testUtil.getFileFromResources();
if (file == null)
return null;
String line;
List<String> stringList = new ArrayList<>();
try (FileReader reader = new FileReader(file);
BufferedReader br = new BufferedReader(reader))
{
while ((line = br.readLine()) != null)
{
stringList.add(line);
System.out.println(line);
}
}
return stringList;
}
File Reading Class:
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.net.URL;
public class TestUtil
{
public File getFileFromResources()throws IOException
{
TestUtil testUtil = new TestUtil();
File file = testUtil.getFileFromResources("testdata.txt");
return file;
}
// get file from classpath, resources folder
private File getFileFromResources(String fileName) {
ClassLoader classLoader = getClass().getClassLoader();
URL resource = classLoader.getResource(fileName);
if (resource == null) {
throw new IllegalArgumentException("file is not found!");
} else {
return new File(resource.getFile());
}
}
}
How can i generate test cases dynamically by taking input from file?
If you can convert your file JUnitParams supports loading data from a CSV.
Using an example from the above link's repository:
public class PersonTest {
#Test
#FileParameters("src/test/resources/test.csv")
public void loadParamsFromCsv(int age, String name) {
assertFalse(age > 120);
}
}
I'm a java beginner and I'm doing a small project about dictionary, now I want to save word and translate mean in file, because my native language often have space like chicken will be con gà so, I must use other way, not by space, but I really don't know how to do that, a word and it translation in one line, separate by "tab", mean multi space like chicken con gà now I want to get 2 words and store it in my array of Words which I created before, so I want to do something like
w1=word1inline;
w2=word2inline;
Word(word1inline,word2inline);(this is a member of array);
please help me, thanks a lot, I just know how to read line from file text, and use split to get word but I am not sure how to read by multi space.
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
public class docfile {
public static void main(String[] args)
{
String readLine;
ArrayList<String>str=new ArrayList<>(String);
try {
File file = new File("text.txt");
BufferedReader b = new BufferedReader(new FileReader(file));
while ((readLine = b.readLine()) != null) {
str.add()=readLine.split(" ");
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
If you stick to using tabs as a separator, this should work:
package Application;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
public class Application {
public static void main(String[] args) {
String line;
ArrayList<String> str = new ArrayList<>();
try {
File file = new File("text.txt");
BufferedReader b = new BufferedReader(new FileReader(file));
while ((line = b.readLine()) != null) {
for (String s : line.split("\t")) {
str.add(s);
}
}
str.forEach(System.out::println);
} catch (IOException e) {
e.printStackTrace();
}
}
}
Why not just use a properties file?
dict.properties:
chicken=con gá
Dict.java:
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.Properties;
public class Dict {
public static void main(String[] args) throws IOException {
Properties dict = new Properties();
dict.load(Files.newBufferedReader(Paths.get("dict.properties")));
System.out.println(dict.getProperty("chicken"));
}
}
Output:
con gá
If your line is like this chicken con gà you can use indexof() method to find the first space in the string.
Then you can substring each word by using substring() method.
readLine = b.readLine();
ArrayList<String>str=new ArrayList<>();
int i = readLine.indexOf(' ');
String firstWord = readLine.substring(0, i);
String secondWord = readLine.substring(i+1, readLine.length());
str.add(firstWord);
str.add(secondWord);
I want to add some code to the C source code, so I try to use ASTRewrite.
My Github project: cdt-rewrite
My code:
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import org.eclipse.cdt.core.dom.ast.ASTVisitor;
import org.eclipse.cdt.core.dom.ast.IASTIfStatement;
import org.eclipse.cdt.core.dom.ast.IASTStatement;
import org.eclipse.cdt.core.dom.ast.IASTTranslationUnit;
import org.eclipse.cdt.core.dom.ast.gnu.c.GCCLanguage;
import org.eclipse.cdt.core.dom.rewrite.ASTRewrite;
import org.eclipse.cdt.core.model.ILanguage;
import org.eclipse.cdt.core.parser.DefaultLogService;
import org.eclipse.cdt.core.parser.FileContent;
import org.eclipse.cdt.core.parser.IncludeFileContentProvider;
import org.eclipse.cdt.core.parser.ScannerInfo;
import org.eclipse.core.runtime.NullProgressMonitor;
import org.eclipse.ltk.core.refactoring.Change;
public class Main {
public static void main(String[] args) throws Exception {
IASTTranslationUnit u = getTranslationUnit(new File("D:/test.c"));
System.out.println(u.getRawSignature());
ASTRewrite rw = ASTRewrite.create(u);
u.accept(new ASTVisitor(true) {
#Override
public int visit(IASTStatement stm) {
if (stm instanceof IASTIfStatement){
rw.insertBefore(stm.getParent(), stm,
rw.createLiteralNode("callTo(1,2,3);"), null);
}
return PROCESS_CONTINUE;
}
});
Change c = rw.rewriteAST();
c.perform(new NullProgressMonitor());
//String changedSource = someHowGetCode(c);
}
static IASTTranslationUnit getTranslationUnit(File source) throws Exception{
FileContent reader = FileContent.create(
source.getAbsolutePath(),
getContentFile(source).toCharArray());
return GCCLanguage.getDefault().getASTTranslationUnit(
reader,
new ScannerInfo(),
IncludeFileContentProvider.getSavedFilesProvider(),
null,
ILanguage.OPTION_IS_SOURCE_UNIT,
new DefaultLogService());
}
static String getContentFile(File file) throws IOException {
StringBuilder content = new StringBuilder();
String line;
try (BufferedReader br = new BufferedReader(
new InputStreamReader(new FileInputStream(file)))) {
while ((line = br.readLine()) != null)
content.append(line).append('\n');
}
return content.toString();
}
}
But when I run this code, an exception is occur:
int test(int x){
if (x < 0)
return 0;
int i, s = 0;
for (i = 1; i < x; i++)
s = s + i;
return s;
}
Exception in thread "main" java.lang.NullPointerException
at org.eclipse.cdt.internal.formatter.ChangeFormatter.formatChangedCode(ChangeFormatter.java:92)
at org.eclipse.cdt.internal.core.dom.rewrite.changegenerator.ChangeGenerator.generateChange(ChangeGenerator.java:117)
at org.eclipse.cdt.internal.core.dom.rewrite.changegenerator.ChangeGenerator.generateChange(ChangeGenerator.java:104)
at org.eclipse.cdt.internal.core.dom.rewrite.ASTRewriteAnalyzer.rewriteAST(ASTRewriteAnalyzer.java:26)
at org.eclipse.cdt.core.dom.rewrite.ASTRewrite.rewriteAST(ASTRewrite.java:212)
at Main.main(Main.java:44)
Does anyone know how to solve this exception?
Thanks you
AFAIK This code is dependent on running in OSGi, but you appear to have made a Java project with a main. You need to a plug-in project with a MANIFEST.MF that references what you require.
You can create an Eclipse Application if you want to control the entry point to the program. If you want to graduate this rewriting code to be part of Eclipse/CDT, then different entry points such as an Eclipse Command tied to a menu/toolbar/key combination may be what you want.