Jasper Server Authentication, Checking and Creating Directory using Java REST API

In this blog the following topics will be covered:

1) Jasper server Authentication

2) Checking and creating a directoryusing java REST API.

Prerequisites: Eclipse Neon, JDK 1.8

The RESTful interface of Jasper Reports server responds to HTTP requests from client applications. In the following methods

1. GET – used to get the information of server resources
2. POST – used to create resources in the server
3. PUT – used to update the resources in the server
4. DELETE – used to delete the resources from the server

1. Jasper server Authentication:

REST service:  j_spring_security_check

Method:  GET

URL: http://localhost:port/jasperserver-pro/j_spring_security_check?j_username=” + username+ “&j_password=” + password

If the credentials are correct, then it returns session id.

Java source code:

package task.login;
import java.io.IOException;
import java.net.HttpURLConnection;
import java.net.URL;
public class ServerAuthentication {
public static void main(String args[]) {

System.out.println("Session ID : " + ServerAuthentication.

LoginRequest("superuser", "superuser"));

}

public static String LoginRequest(String username, String password) {
URL url = null;
HttpURLConnection con = null;
String jsessionId = "";
String urlLink = "http://localhost:port/jasperserver-  pro/j_spring_security_check?"+ "j_username=" + username+ "&j_password=" + password;
try {

url = new URL(urlLink);
con = (HttpURLConnection) url.openConnection();
con.setRequestMethod("GET");
con.connect();
System.out.println("Login response code :" + con.getResponseCode());
String session_id = con.toString() + "";
int index1 = session_id.indexOf("=");
int index2 = session_id.indexOf("?");
jsessionId = session_id.substring(index1 + 1, index2);
} catch (IOException e) {
e.printStackTrace();
}
return jsessionId;
}
}

2 . Directory checking in Jasper server : 

REST service:  rest_v2

Method:  GET

URL: http://localhost:port/jasperserver-pro/rest_v2/resources/public/my_Test/” + dirName

If the directory already exists in the server returns true , not exist then returns false.

Java source code:

package task.login;

import java.io.IOException;

import java.net.HttpURLConnection;

import java.net.URL; 

class CheckingDirectory {

public static void main(String args[]) {

System.out.println(CheckingDirectory.checkDirectory("myName"));

}

public static boolean checkDirectory(String dirName) {

URL url = null;

HttpURLConnection con = null;

int responseCode = 0;

boolean existStaus = false;

String username = "superuser";

String password ="superuser";

String session_id = ServerAuthentication.LoginRequest(username, password);

String urlLink = "http://localhost:port/jasperserver-pro/rest_v2/resources/public/my_Test/" + dirName;
try {

url = new URL(urlLink);

con = (HttpURLConnection) url.openConnection();
con.setRequestProperty("Cookie", "JSESSIONID=" + session_id);
con.setDoOutput(true);
con.setRequestMethod("GET");
con.connect();
responseCode = con.getResponseCode();
} catch (IOException e) {
e.printStackTrace();
}

System.out.println("Checking Response Code : " + responseCode);

if (responseCode == 404) {
existStaus = false;
} else if (responseCode == 200) {
existStaus = true;
}
return existStaus;
}
}

3. Directory Creating in Jasper server :

REST service:  rest_v2

Method:  POST

URL: http://localhost/jasperserver-pro/rest_v2/resources/public/my_Test

If the directory is created returns true, if not return false.

Java source code:

package task.login;

import java.io.IOException;

import java.io.OutputStreamWriter;

import java.net.HttpURLConnection;

import java.net.URL;

import org.json.JSONException;

import org.json.JSONObject;

class CreatingDirectory {

public static void main(String args[]) {

System.out.println(CreatingDirectory.createDirectory("MyName"));

}

public static boolean createDirectory(String dirName) {

boolean creationStatus = false;

URL url = null;

HttpURLConnection con = null;

int responseCode = 0;

String username="superuser";

String password="superuser";

String session_id = ServerAuthentication.LoginRequest(username,password);

String urlLink = "http://localhost:port/jasperserver-pro/rest_v2/resources/public/my_Test";

try {
url = new URL(urlLink);
con = (HttpURLConnection) url.openConnection();
con.setRequestProperty("Cookie", "JSESSIONID=" + session_id);
con.setDoOutput(true);
con.setDoInput(true);
con.setRequestProperty("Content-Type", "application/repository.folder+json");
con.setRequestProperty("Accept", "application/repository.folder+json");
con.setRequestMethod("POST");
JSONObject jsonBodyInfo = new JSONObject();
try {
jsonBodyInfo.put("label", dirName);
jsonBodyInfo.put("description", "Sample Test");
} catch (JSONException e) {

// TODO Auto-generated catch block

e.printStackTrace();
}
OutputStreamWriter wr = new OutputStreamWriter(con.getOutputStream());
wr.write(jsonBodyInfo.toString());
wr.flush();
con.connect();
responseCode = con.getResponseCode();
} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();
}
System.out.println("creation Response Code : " + responseCode);
if (responseCode == 404) {
creationStatus = false;
} else if (responseCode == 401) {
System.out.println("Un-Authorised Access");
}
if (responseCode == 201) {
creationStatus = true;
}
return creationStatus;
}
}

User Demo : we can check functionality of these individual programs  at a time  using this source code

package task.login;
import java.util.Scanner;
public class UserDemo {
public static void main(String[] args) {

Scanner sc = new Scanner(System.in);

String dirName;

String username, password;

System.out.println("Enter Login Details of Jasper Server");

System.out.println("Enter username :");

username = sc.next();

System.out.println("Enter password :");

password = sc.next();

String sessionId = ServerAuthentication.LoginRequest(username, password);

if (sessionId != null) {

System.out.println("Login successful with Session ID : " + sessionId);

}

System.out.println("Enter directory name to check whether exists or not in server :");

dirName = sc.next();

boolean existStatus = CheckingDirectory.checkDirectory(dirName);

 if (existStatus == false) {

boolean creationStatus = CreatingDirectory.createDirectory(dirName);

if (creationStatus == true) {

System.out.println("Directory Successfully Created with name :" + dirName);

} else {

System.out.println("Failed to created Directory");

}

} else {

System.out.println("Directory Already exists with name :" + dirName);

}

}

}

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