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Server Tomcat v8.5 Server at localhost failed to start

morde last edited by

Hello, everyone. It was all right. Everything worked. Server Tomcat v8.5 Server at localhost failed to start. I already removed the server, I don't know what to do!
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carriann

I don't have annotations like:
@WebServlet("/AdminServlet) So I've decided to write all jsp pages on the web file.xml This is an example of one page:

   <servlet>
     <servlet-name>footer</servlet-name>
     <jsp-file>/WebContent/footer.jsp</jsp-file> //это ОЧЕНЬ важно !! из-за неверного пути и падала ошибка Апача !! 
   </servlet>
  <servlet-mapping>
    <servlet-name>footer</servlet-name>
    <url-pattern>/footer</url-pattern>
  </servlet-mapping>

or the decision to use only annotations

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Questions with the ConnectionFactory and DAO class
Software Programming • java connect • • derk

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Means DriverManager has the static method called getConnection? And what does he return? A connection?Exactly. The method getConnection is static and will return a connection (an instance of java.sql.Connection) according to the configuration parameters that were specified. Note that in your case, you are connecting in PostgreSQL. For this, you need the library of connection to this database (usually a *.jar acquitted that should be in your classpath when you start the application). It is in this jar that will be implementing how to connect with PostgreSQL. Java has an abstraction for database connection that is called http://www.oracle.com/technetwork/java/javase/jdbc/index.html (Java Database Connectivity). The PostgreSQL driver you are using follows the specification of this abstraction to implement the connection details with a PostgreSQL bank.And what's the importance of that?Tomorrow if you change your database to MySQL, for example, just include the jar (MySQL connection driver) and change the connection string to MySQL. Obviously, if you are using specific PostgreSQL resources within your DAO classes, then the change will be more complicated. That's one of the reasons for frameworks like Hibernate exist, but that's about the other question.Now about the DAO...I am accessing the method of the ConnectionFactory class right in the builder, what's the name of doing that kind of thing?In your DAO there is an attribute that is called java.sql.Connection connection. This attribute is what you will use to interact with your database. Doing queries, inserts, changes, etc.When you install an AlunoDAO, this attribute is initialized with null. However, right in your builder you pass to it the reference of an object Connection, created by your factory called ConnectionFactory. In other words, the instance of your Student now has a connection with the database.If you do that only connection.getConnection(), as proposed in the question, there will be a compilation error. For the class java.sql.Connection does not have a method getConnection(). Who has a getConnection() it is DriverManager.Overall, its implementation is consistent. The only cave I do is that every time you call ConnectionFactory.getConnection() a new connection to the database will be made. This is not desirable, because every time you install one of your DAOs, a new connection will be performed without need. Generally, you work with a connection or use a library to manage a pool of connections. But that's a matter for another question.
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stop/start remote server services
Software Programming • c sharp visual studio servic languagee • • Trenton

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I would use The other, validates that the service is running (Execute services.msc) Apart from these validations, it is important to review antivirus on the server you want to connect to (because it is a port commonly susceptible to historical attacks) and if there is any security equipment between your terminal and the server (a WAF or IPF will block requests for unenabled ports and this is between the ports that are normally blocked)
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Difference between \r and \n JAVA
Software Programming • java • • emerson

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They are not really the same, definitions can give you an idea of how they work:\n : (Line Feed) moves the cursor to the next line without returning to the beginning from the line.\r : Car Return (Carriage return), move the cursor at the beginning of the line without moving to the next line.Both are commonly used \r\n. This to start a new line. Move the cursor at the start of the line (\r) and move the cursor to the next line (\n).An analogy of which it is precisely obtained the descriptions would be the one added in the Return car, move at the beginning of the line to write but we need to change the line to not write about it, then move the lever (line feed).
Support to java level in android project
Software Programming • java android android studio android sdk • • briley

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Add it. build.gradle Sectionandroid { compileOptions { sourceCompatibility JavaVersion.VERSION_1_7 targetCompatibility JavaVersion.VERSION_1_7 } } compileSdkVersion You should be at least 19 http://tools.android.com/tech-docs/new-build-system/user-guide#TOC-Setting-language-level
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How do we start the spring server from the tests?
Software Programming • java spring testing okhttp • • Raziyah00

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To get your client on to that host, some server has to listen to this host. If you want to replace the real server in the face of your application, you might be interested in some gag (mock) that will listen to the necessary host. Since you're using OkHtp, you might be fine. https://github.com/square/okhttp/tree/master/mockwebserver ♪
Framworth Codeignither. What does that mean?
Software Programming • php mysql codeigniter • • Mystic

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Make a sample of OBD: select all rows from table tm_subcategory where field id_category equals 5. Of all the columns in the sample, only columns id and title.
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Why doesn't the server start with a Symfony project downloaded on GitHub?
Software Programming • php server symfony3 • • Pearlaqua

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The same thing happened to me, that is a symfony error when creating projects.Apparently when you create your project with symfony (symfony new --full my_project) you will not download all the necessary files and directories, in this particular case it tells you not to find the directory "vendor" (surely because it does not exist).What you have to do is create the project with composer as follows:composer create-project symfony/website-skeleton my_project I hope I helped you
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Error starting IIS Express Web Server - Error 0x80070020
Software Programming • visual studio proc languageess iis express • • Jolied

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As http://davidsalter.com/2013/11/unable-to-launch-the-iis-express-web-server-error-0x80070020.html of a blog:The code error 0x80070020 means ERROR_SHARING_VIOLATION, in the case of IIS Express (or) IIS) means that the door IIS is trying to listen is being used by another process.To find out which application is using the door, just run the command netstat No cmd with the following syntax: netstat -ao | findstr número_da_porta_que_está_pesquisandoThe parameter a is responsible for displaying all connections and ports heard.The parameter o is responsible for displaying the process ID associated with the connection.Running the command above:C:\Users\Daniel>netstat -ao | findstr 49286 TCP [::1]:49286 Daniel:49286 ESTABLISHED 4280 After discovering the process ID, which is displayed in the last column of the command return, just search his name using tasklist:C:\Users\Daniel>tasklist /FI "PID eq 4280" Image Name PID Session Name Session# Mem Usage ========================= ======== ================ =========== ============ firefox.exe 4280 Console 1 601.012 K Or you can just kill the process with taskkill:C:\Users\Daniel>taskkill /PID 4280
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Is the way to implement these two boards of an online store right?
Software Programming • mysql base de datos modelorelac languageional • • kalena

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In WooCommerce or Prestashop the system you use is the following:A user has a cart in which he adds items, and when the purchases are created an order, removing the objects from the cart and adding them to the order history.I mean, the way you did it is okay.
Is it possible to clearly describe such concepts as the design tools and the Java Applied Programs?
Software Programming • java terminology • • jeanid

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In the original book:Although annotations are designed mostly for use by other development or deployment toolsDevelopment tools or Инструментальные средства разработки That's it. Integrated development environment - IDE (IntelliJ IDEA, Eclipse, NetBeans etc)Deployment tools or Средства развертывания These are instruments to automate the collection and deployment of applications (Maven, Gradle, Ant etc)
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Help with JCalendar
Software Programming • java sql netbeans jc languagealendar • • jonetta

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Better use this date format: yyyy-MM-dd. I mean, it would stay:public String obtenerFecha(){ SimpleDateFormat formato =new SimpleDateFormat("yyyy-MM-dd"); String fecha =formato.format(jCalenadar1.getDate()); return fecha; } That'll work but it's not a good programming practice since you're creating a new SimpleDateFormat for every time you run getDate(). You must initialize that object SimpleDateFormat in the builder of your class where the method is found obtenerFecha(). So:class TuClase{ SimpleDateFormat formato;//declaración como atributo public TuClase{ //... formato =new SimpleDateFormat("yyyy-MM-dd"); //... } } And obtenerFecha() You'd stay like this.public String obtenerFecha(){ SimpleDateFormat formato =new SimpleDateFormat("yyyy-MM-dd"); String fecha =formato.format(jCalenadar1.getDate()); return fecha; } Although there is no need to create a variable, returns directlyformato.format(jCalenadar1.getDate());.So:public String obtenerFecha(){ return formato.format(jCalenadar1.getDate()); } And finally in getActividades() you pass the date to the consultation://donde pusiste: "...and fecha=''"); //pones la fecha formateada, así: "...and fecha="+"'"+obtenerFecha()+"'");//presta atención a las comillas //fijate que cada comilla simple ' está encerrada entre comillas doble ""
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Will a mysqldump ever break my database?
SQL, Database Testing • mysql mysqldump • • zymir

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The mysqldump utility will not break your database. Read the source code for it and/or turn on the general query log while it's running and you'll see that what all it does it look. But... If you are using MyISAM, or if you fail to use the --single-transaction option, or you issue a FLUSH TABLES; request from another connection while the backup is reading a large table, you stand a higher chance of stalling your web site because there are things that can happen to cause queries to block until the specific table or the entire backup is complete. And, if you do have serious corruption in your data, mysqldump stands a good chance of running into it, since it reads every row from every table by default, which means the server will be trying to read through the corruption and could crash. This is essentially true of any backup, of course. But directly and ordinarily and by most reasonable definitions, mysqldump cannot harm your database contents.
How do I do a subquery in Laravel 5.5?
Software Programming • php laravel laravel 5 querybuilder • • inna

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What you want to do with eloquent I try sometimes but it seemed much easier to run the query directly$sentence = "SELECT COUNT(*) from (SELECT COUNT (V.CORRELATIVO) AS CANTIDAD FROM LIENTES C LEFT JOIN VENTAS V ON V.CLIENTE_CODIGO = C.codigo WHERE C.CODIGO <> '01' GROUP BY C.CODIGO HAVING COUNT (V.correlativo) > 1 )"; $result = DB::select($sentence); or But you can create a view and do the query on the viewcreate view vista_sentence as SELECT COUNT(*) from (SELECT COUNT (V.CORRELATIVO) AS CANTIDAD FROM LIENTES C LEFT JOIN VENTAS V ON V.CLIENTE_CODIGO = C.codigo WHERE C.CODIGO <> '01' GROUP BY C.CODIGO HAVING COUNT (V.correlativo) > 1 )"; Then you would create a model that relates the view or simply the consultation with query builder$operacion = DB::table('vista_sentence') in order to do this you must enable the following "PDO::ATTR_EMULATE_PREPARES => true" in the database.php file'mysql' => [ 'driver' => 'mysql', 'host' => env('DB_HOST', '127.0.0.1'), 'port' => env('DB_PORT', '3306'), 'database' => env('DB_DATABASE', 'forge'), 'username' => env('DB_USERNAME', 'forge'), 'password' => env('DB_PASSWORD', ''), 'unix_socket' => env('DB_SOCKET', ''), 'charset' => 'utf8', 'collation' => 'utf8_unicode_ci', 'prefix' => '', 'strict' => false, 'engine' => null, 'options' => [ \PDO::ATTR_EMULATE_PREPARES => true ] ],
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Get all the information on the youngest director. SQL SERVER
Software Programming • mysql sql server sql • • gionna

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You're putting the filter on. КодДеятельности='2', at the request, you're looking for a maximum date for the whole table. Then the filter КодДеятельности='2' I need to repeat the request. But it won't be lacony. There'll be enough filter in the sub-request, like: SELECT * FROM Кинодеятели WHERE ДатаРождения in (select MAX(ДатаРождения) from Кинодеятели WHERE КодДеятельности=2 )
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[Solved] MariaDB failed to start
Software Programming • my • • simrah

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Unfortunately, I can't specify it because the file existence is not at hand.systemctl status The process id when /etc/rc.d/init.d/myStart is started according to my出力 output, and the process 6の is7月 01 12:12:03 localhost.localdomain mysql[6341]: Starting MySQL. ERROR! /etc/rc.d/init.d/my! If you find out where you are determining the message, you can see the cause.

Server Tomcat v8.5 Server at localhost failed to start

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Is it possible to clearly describe such concepts as the design tools and the Java Applied Programs?
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