Strip HTML Entities | Remove HTML Tags From String | Stripping HTML Tags in Java | Remove Html Tags From String Using Java | Java: RegEx To Remove HTML Tags

I am writing one program which reads text contents from file. Now I am reading it using bufferedreader class of java. I am able to remove any unwanted characters like '(' or '.' etc, using replaceAll() method. But I want to remove html tags too like "div", "span", "p" and many others like this, including &amp. How to achieve this? Is there a good way to remove HTML from a Java string? Yes, we can using regex. Below is full example written in Java to strip html entities from text.

Full java code example is below:

package com.pkm;

import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 * @author PRITOM K MONDAL
 */
public class StripHtmlTags {
    private static final String emptyTag = "<[a-zA-Z0-9]+[^>]+>|</[a-zA-Z0-9]+>";
    private static final String commentTag = "<!--(.*?)-->";
    private static final String docTypeTag = "<![a-zA-Z0-9]+(.*?)>";

    public static void main(String[] args) throws Exception {
        File source = new File("html.txt");
        String text = new String(readObjectFromFile(source), "UTF-8");
        //text = "<p-if case='n=1'>TESTED_N_EQ_1</p-if>";
        text = parse(text);
        println("-------------------------------");
        println(text);
        println("-------------------------------");
    }

    private static String parse(String text) throws Exception {
        text = text.replace("\r\n", "").replace("\n", "").replace("&nbsp;", " ");
        text = replaceDocTypeTags(text);
        text = replaceCommentTags(text);
        text = replaceScriptTags(text);
        text = replaceContentTags(text);  
        text = replaceEmptyTags(text);      
        return text.replaceAll("\\s+", " ").trim();
    }
    
    private static String replaceScriptTags(String text) {
        Pattern p = Pattern.compile("(<(?<tag>(script|style))[^>]*>(?>[^<])*<\\/\\k<tag>\\s*>)", Pattern.CASE_INSENSITIVE);
        Matcher m = p.matcher(text);
        StringBuffer output = new StringBuffer();
        boolean trigger = false;
        while(m.find()){
            String find = m.group(0), tag = m.group(2);
            m.appendReplacement(output, " ");
            trigger = true;
        }
        m.appendTail(output);
        if (trigger) {
            return replaceScriptTags(output.toString());
        }
        return output.toString().replaceAll("\\s+", " ").trim();
    }

    private static String replaceDocTypeTags(String text) {
        try {
            StringBuffer output = new StringBuffer();
            Pattern pattern = Pattern.compile(docTypeTag, Pattern.MULTILINE);
            Matcher matcher = pattern.matcher(text);
            while (matcher.find()) {
                matcher.appendReplacement(output, " ");
            }
            matcher.appendTail(output);
            return output.toString().trim();
        }
        catch (Exception ex) {
            ex.printStackTrace();
        }
        return text;
    }

    private static String replaceCommentTags(String text) {
        try {
            StringBuffer output = new StringBuffer();
            Pattern pattern = Pattern.compile(commentTag, Pattern.MULTILINE);
            Matcher matcher = pattern.matcher(text);
            while (matcher.find()) {
                matcher.appendReplacement(output, " ");
            }
            matcher.appendTail(output);
            return output.toString().trim();
        }
        catch (Exception ex) {
            ex.printStackTrace();
        }
        return text;
    }

    private static String replaceContentTags(String text) {
        Pattern p = Pattern.compile("(<(?<tag>\\w+)[^>]*>(?>[^<])*<\\/\\k<tag>\\s*>)", Pattern.CASE_INSENSITIVE);
        Matcher m = p.matcher(text);
        StringBuffer output = new StringBuffer();
        boolean trigger = false;
        while(m.find()){
            String find = m.group(0), tag = m.group(2);
            if (tag != null) {
                find = find.substring(find.indexOf(">") + 1, find.length() - tag.length() - 3);
                m.appendReplacement(output, " " + Matcher.quoteReplacement(find) + " ");
            }
            else {
                m.appendReplacement(output, " ");
            }
            trigger = true;
        }
        m.appendTail(output);
        if (trigger) {
            return replaceContentTags(output.toString());
        }
        return output.toString();
    }

    private static String replaceEmptyTags(String text) {
        try {
            StringBuffer output = new StringBuffer();
            Pattern pattern = Pattern.compile(emptyTag, Pattern.MULTILINE);
            Matcher matcher = pattern.matcher(text);
            while (matcher.find()) {
                matcher.appendReplacement(output, " ");
            }
            matcher.appendTail(output);
            return output.toString().trim();
        }
        catch (Exception ex) {
            ex.printStackTrace();
        }
        return text;
    }

    private static byte[] readObjectFromFile(File source) throws Exception {
        int size = (int) source.length();
        byte[] bytes = new byte[size];
        BufferedInputStream inputStream = new BufferedInputStream(new FileInputStream(source));
        inputStream.read(bytes, 0, bytes.length);
        inputStream.close();
        return bytes;
    }
    
    private static void println(Object o) {
        System.out.println("" + o);
    }
}

I used below html as example:

<div class="m_2691871633108987921InfoContent"><div style="margin:auto;max-width:48em" class="m_2691871633108987921box m_2691871633108987921dark">Pritom you are getting this message as free service for being a user of the PHP Classes site to which you registered voluntarily using the email address <a href="mailto:pritomkucse@gmail.com" target="_blank">pritomkucse@gmail.com</a>. If you wish to unsubscribe go to the <a href="https://www.phpclasses.org/unsub/n/pritomkumarm/u/newclasses/cc/8d4da9/" target="_blank" data-saferedirecturl="https://www.google.com/url?hl=en&amp;q=https://www.phpclasses.org/unsub/n/pritomkumarm/u/newclasses/cc/8d4da9/&amp;source=gmail&amp;ust=1500128983383000&amp;usg=AFQjCNHdGC4JMTFZL4gunLN5iEeeo-H7fA">unsubscribe page</a>.</div>
<ul>
<table cellpadding="0" cellspacing="0">
<tbody><tr>
<td valign="top" style="padding:0"><h2>Class:</h2>
<div><b><a href="https://www.phpclasses.org/package/10378.html" target="_blank" data-saferedirecturl="https://www.google.com/url?hl=en&amp;q=https://www.phpclasses.org/package/10378.html&amp;source=gmail&amp;ust=1500128983383000&amp;usg=AFQjCNGoRBbTEuOrPMzCnTA8hSMocBh0bA">AJAX Form Validate</a></b><br><a href="https://www.phpclasses.org/discuss/package/10378/" target="_blank" data-saferedirecturl="https://www.google.com/url?hl=en&amp;q=https://www.phpclasses.org/discuss/package/10378/&amp;source=gmail&amp;ust=1500128983383000&amp;usg=AFQjCNF-oSc-24S0hUUr873Yu-o0afYlMg">This class support forum</a></div>
<h2>Short description:</h2>
<div>
Render and validate forms submitted via AJAX</div>
<h2>Groups:</h2>
<div>
PHP 5, Validation, AJAX</div>
</td>
<td valign="top" width="1%"></td>
</tr>
</tbody></table>
<h2>Supplied by:</h2><div>Vishv Sahdev</div>
<h2>Detailed description:</h2>
<div>This class can render and validate forms submitted via AJAX.<br>
<br>
It can render HTML forms using templates that take assigned variable values passed to the class as an array.<br>
<br>
The class can also validate a submitted form inputs according to many possible validation rules.<br>
<br>
If there are validation errors, the class will generate a JSON response to the AJAX request to display</div>
</ul>
<ul>
<h2>PHP Classes site tip of the day:</h2>
<div><p><b><big><a href="https://www.phpclasses.org/tips.html?tip=submit-your-components" target="_blank" data-saferedirecturl="https://www.google.com/url?hl=en&amp;q=https://www.phpclasses.org/tips.html?tip%3Dsubmit-your-components&amp;source=gmail&amp;ust=1500128983383000&amp;usg=AFQjCNGyBzcYnZHB_Trk3N_EycwWu5PS3g">Get feedback and recognition submitting your PHP components</a></big></b></p>
</div>
</ul>
<div style="margin:auto;max-width:48em" class="m_2691871633108987921box m_2691871633108987921dark">Pritom if you are not interested in receiving any more messages like this one, go to the <a href="https://www.phpclasses.org/unsub/n/pritomkumarm/u/newclasses/cc/8d4da9/" target="_blank" data-saferedirecturl="https://www.google.com/url?hl=en&amp;q=https://www.phpclasses.org/unsub/n/pritomkumarm/u/newclasses/cc/8d4da9/&amp;source=gmail&amp;ust=1500128983383000&amp;usg=AFQjCNHdGC4JMTFZL4gunLN5iEeeo-H7fA">unsubscribe page</a> .</div>

</div>

And my java code parse as below string:

Pritom you are getting this message as free service for being a user of the PHP Classes site to which you registered voluntarily using the email address pritomkucse@gmail.com . If you wish to unsubscribe go to the unsubscribe page . Class: AJAX Form Validate This class support forum Short description: Render and validate forms submitted via AJAX Groups: PHP 5, Validation, AJAX Supplied by: Vishv Sahdev Detailed description: This class can render and validate forms submitted via AJAX. It can render HTML forms using templates that take assigned variable values passed to the class as an array. The class can also validate a submitted form inputs according to many possible validation rules. If there are validation errors, the class will generate a JSON response to the AJAX request to display PHP Classes site tip of the day: Get feedback and recognition submitting your PHP components Pritom if you are not interested in receiving any more messages like this one, go to the unsubscribe page .

Laravel 5: Get Controller Name in View | Route Details | Controller & Action Name | Route Parameters

You can create a view composer that injects those variables into your view file. In "app/Providers/AppServiceProvider.php" add something like this:

public function boot()
{
    //app('view')->composer("folder.specific_view_name", function ($view) {
    app('view')->composer("*", function ($view) {
        $action = app("request")->route()->getAction();

        $controller = class_basename($action["controller"]);

        list($controller_name, $action_name) = explode("@", $controller);

        $view->with(compact("controller_name", "action_name"));
    });
}

You also can parameters from current request as below:

app('request')->route()->parameters()

Array
(
    [middleware] => web
    [as] => folder.view_name
    [uses] => App\Http\Controllers\UserController@show
    [controller] => App\Http\Controllers\UserController@show
    [namespace] => App\Http\Controllers
    [prefix] => 
    [where] => Array
        (
        )


)

Laravel 5: Logging All DB Query | Log Queries | Listen Query Events | Query Logging | Sql Logging | Log SQL | DB Connection Class | Laravel Database Connection | Laravel DB Connection Query Run Method

Laravel 5: Logging All DB Query | Log Queries | Listen Query Events | Query Logging | Sql Logging | Log SQL | DB Connection Class | Laravel Database Connection | Laravel DB Connection Query Run Method.

Logging query in Laravel is easy. You can then register event listener for DB. At first you need to create an service provider in directory ("project/app/Providers" ) named QueryLogProvider with following contents:

<?php
namespace App\Providers;

use Monolog\Logger;
use Illuminate\Support\Facades\DB;
use Monolog\Handler\StreamHandler;
use Illuminate\Support\ServiceProvider;

class QueryLogProvider extends ServiceProvider
{
    public function register()
    {
        DB::listen(function ($query) {
            $logFile = storage_path('logs/query-log-'.date("Y-m-d").'.log');
            $stream = new Logger('log');
            $stream->pushHandler(new StreamHandler($logFile));
            $bindings = $query->bindings;
            $time = $query->time;
            $stream->info($query->sql, compact('bindings', 'time'));
        });
    }
}

You are done with creating provider. Now you have to register in file "project/config/app.php" in section 

'providers' => [
    .....,
    App\Providers\QueryLogProvider::class
],

All your queries will be stored on the location "project/storage/logs" with prefix file name "query-log".

But you can do some wired things, editing source code. To do so first need to open your connection class:

Illuminate\Database\Connection

and navigate to function:

protected function run($query, $bindings, Closure $callback)

actually all query in Laravel passed through this method.

So you can do whatever you wish to do here.

VBScript: Task Scheduler in Windows | Task On Startup

Create your own VBScript which will execute as scheduled time or at logon time. There are different settings which will give you more control on customization of schedule task.

Then open "Task Scheduler" and follow below screenshots:

Then click "Action" and "Create Task..."

Enter your task name

Click "Trigger" and modify settings

Click "Action" and modify settings

In "Program/script" field put:
C:\Windows\System32\CScript.exe

And In "Add arguments" field put:
//Nologo //B C:\tmp\MyStartup.vbs

This will run the VBScript every 1 hour.

Now if you want to run this script when an user login then you have to change the action to "At log on", so do following as screenshot below:

Laravel 5: Get Service Instance In Controller Dynamically | Get Service Instance In Service Dynamically

The Laravel service container is a powerful tool for managing class dependencies. Dependency injection is a fancy word that essentially means this: class dependencies are "injected" into the class via the constructor.

There are several ways to resolve something out of the container. First, you may use the make method as below example:

$service = app()->make("App\\Service\\EmployeeService");

So it makes life easier.

PHPStorm: Open Project Using Command Line Using VBScript | Open Directory Using Command Line Using VBScript

PhpStorm helps opening a project using command line. You can open specific file with specific line. Below is a code snippet (Written in VBScript) to open a project directory using command line as well as VBScript.

Set WshShell = CreateObject("WScript.Shell" )

WshShell.Run """C:\..\bin\PhpStorm.exe"" ""C:\xamp\project" "", 1

And in MAC you can use below command:
/Applications/../phpstorm ~/PhpS..jects/unt..5


You also can open a file of the same project using below command:

PhpStorm.exe C:\project_dir --line 3 C:\project_dir\numbers.js

Laravel 5: Change Default Database connection Dynamically | Change database name of connection on the fly | How to change default database connection in controller | Multiple DB Connections | Specifying DB connection information dynamically instead of config key | How to Use Multiple Database Connections in Laravel Application

use Illuminate\Config\Repository;

public function __construct(Repository $config) {}

So now you can $config from the above reference.

Below is a sample usage of change database name:

$config->set("database.connections.mysql.database", "test");

or

app()->config->set("database.connections.mysql.database", "test");

You can use this functionality in middle-ware.

If your app already connected then you have to disconnect it before make new connection available.

Below follow steps to disconnect connection:

$dm = app("Illuminate\\Database\\DatabaseManager");

$dm->disconnect();