Accessing Logged-in User Details using Java Service

In this document, learn how to get the logged-in user information using a Java Service. You write a handler to get user information. For example, get the username, userID, IP address, and browser details. To do this, follow the steps described below.

Step 1: Create a Java Handler in Source

Write a java handler class by using an existing handler.

Create a service in the src/main/java inside the handlers folder. For example, UserManagementApp/src/main/java/com/wavemaker/appscore/custom/handlers/CustomAuthenticationSuccessHandler.java

For more information to add files in a project, see including resource files.

Step 2: Implementing Success Handler

note

Create these classes in an IDE and copy it in the path specified in the above screenshot in the CustomAuthenticationSuccessHandler.java file. For more information, see working with IDE.

Implement WMAuthenticationSuccessHandler interface and override the method onAuthenticationSuccess. This method invokes on successful login.

public class CustomAuthenticationSuccessHandler implements WMAuthenticationSuccessHandler {

@Override
    public void onAuthenticationSuccess(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse,
    WMAuthentication wmAuthentication) throws IOException, ServletException
        {
        }
}

Use the following method parameters, including HttpServletRequest, HttpServletResponse, WMAuthentication. It allows accessing the logged-in user information.
Create a userMap to capture user information as shown in the example below.

tip

Follow the commented-sections in the CustomAuthenticationSuccessHandler.java file in the following example.

Example

CustomAuthenticationSuccessHandler.java

package com.wavemaker.appscore.custom.handlers;

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.security.web.authentication.AuthenticationSuccessHandler;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.security.core.Authentication;
import com.wavemaker.runtime.security.WMAuthentication;
import com.wavemaker.runtime.security.handler.WMAuthenticationSuccessHandler;
import java.util.*;


public class CustomAuthenticationSuccessHandler implements WMAuthenticationSuccessHandler {

    private static final Logger logger = LoggerFactory.getLogger(CustomAuthenticationSuccessHandler.class);
        
        //Created the useMap to capture the userinfo.
        public static final Map<String,String> userMap=new HashMap<String,String>();

@Override
    public void onAuthenticationSuccess(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse,
            WMAuthentication wmAuthentication) throws IOException, ServletException {
        
        //Accessing the ip address and userid and username
        
        final String userId=wmAuthentication.getUserId();
        final String username=wmAuthentication.getPrincipal();
        final String ip=httpServletRequest.getRemoteAddr();
        
        //Process the browser info from the header using 'User-Agent'
        final String browserDetails = httpServletRequest.getHeader("User-Agent");
        final String user = browserDetails.toLowerCase();

        String browser = "";

        //===============Browser Name Processing===========================
        if (user.contains("msie")) {
            String substring = browserDetails.substring(browserDetails.indexOf("MSIE")).split(";")[0];
            browser = substring.split(" ")[0].replace("MSIE", "IE") + "-" + substring.split(" ")[1];
        } else if (user.contains("safari") && user.contains("version")) {
            browser = (browserDetails.substring(browserDetails.indexOf("Safari")).split(" ")[0]).split(
                    "/")[0] + "-" + (browserDetails.substring(
                    browserDetails.indexOf("Version")).split(" ")[0]).split("/")[1];
        } else if (user.contains("opr") || user.contains("opera")) {
            if (user.contains("opera"))
                browser = (browserDetails.substring(browserDetails.indexOf("Opera")).split(" ")[0]).split(
                        "/")[0] + "-" + (browserDetails.substring(
                        browserDetails.indexOf("Version")).split(" ")[0]).split("/")[1];
            else if (user.contains("opr"))
                browser = ((browserDetails.substring(browserDetails.indexOf("OPR")).split(" ")[0]).replace("/",
                                                                                                           "-")).replace(
                        "OPR", "Opera");
        } else if (user.contains("chrome")) {
            browser = (browserDetails.substring(browserDetails.indexOf("Chrome")).split(" ")[0]).replace("/", "-");
        } else if ((user.indexOf("mozilla/7.0") > -1) || (user.indexOf("netscape6") != -1) || (user.indexOf(
                "mozilla/4.7") != -1) || (user.indexOf("mozilla/4.78") != -1) || (user.indexOf(
                "mozilla/4.08") != -1) || (user.indexOf("mozilla/3") != -1)) {
            browser = "Netscape-?";

        } else if (user.contains("firefox")) {
            browser = (browserDetails.substring(browserDetails.indexOf("Firefox")).split(" ")[0]).replace("/", "-");
        } else if (user.contains("rv")) {
            browser = "IE";
        } else {
            browser = "UnKnown, More-Info: " + browserDetails;
        }
        //Preparing the userMap
        userMap.put("IP",ip);
        userMap.put("UserId",userId);
        userMap.put("Username",username);
        userMap.put("Browser",browser);
}
}

Step 3: Declaring Handler as Bean

In project-user-spring.xml, add the bean to declare the user-defined handler.

 <bean class="com.wavemaker.appscore.custom.handlers.CustomAuthenticationSuccessHandler" id="customAuthenticationSuccessHandler/>

Step 4: Create a Java Service

Now create a java service and write a simple method to access the userMap by importing the handler class as shown below.

Example

In this example, GetUserInfoService.java Imports CustomAuthenticationSuccessHandler.


package com.test.getuserinfoservice;

import javax.servlet.http.HttpServletRequest;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import org.springframework.beans.factory.annotation.Autowired;

import com.wavemaker.runtime.security.SecurityService;
import com.wavemaker.runtime.service.annotations.ExposeToClient;
import com.wavemaker.runtime.service.annotations.HideFromClient;
import com.wavemaker.appscore.custom.handlers.CustomAuthenticationSuccessHandler;
import java.util.*;
 
@ExposeToClient
public class GetUserInfoService {
    @Autowired
    private SecurityService securityService;
    @Autowired
    private CustomAuthenticationSuccessHandler useInfo;
public Map<String,String> getUserInfo()
{
        return useInfo.userMap;
}

}

Create a Java Service variable to access this service method to get the list of user details.

WaveMaker Docs

Accessing Logged-in User Details using Java Service

Step 1: Create a Java Handler in Source

Step 2: Implementing Success Handler

note

tip

Example

Step 3: Declaring Handler as Bean

Step 4: Create a Java Service

Example

See Also