How to enter data in INPUTS by JAVA

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How to enter data in INPUTS by JAVA

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#1 by (0 votes)

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I have a String string1 = "123" on a page (www.paginaexample.com) and I have a input name="input1" type="text" , how to insert the content of string1 into input1 , and the entire process is done in JAVA (eclipse) ??

java input

asked by anonymous 26.07.2015 / 04:29

1 answer

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score 0 · Answer 1

First of all, there is a great example answer about servlet and jsp in stackoverflow brazil : Using JSP and JAVA

Responding objectively to your question, the basic way, you need to implement a Servlet :

public class MeuServlet extends HttpServlet{
    protected void doGet(HttpServletRequest request,
            HttpServletResponse response) throws ServletException, IOException {
        String string1 = "123";
        request.setAttribute("minhaString", string1);
        request.getRequestDispatcher("/minhaPagina.jsp").forward(request, response);
    }
}

myPage.jsp

<%@ page language="java" contentType="text/html; charset=iso-8859-1"
    pageEncoding="iso-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<title>Minha Pagina JSP</title>
</head>
<body>
Meu input: 
<input type="text" name="meuInput" value='<%=request.getAttribute("minhaString")%>'/> 

</body>
</html>

index.html

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
</head>
<body>
    <h1 align=center>Load JSP</h1>
    <form method=GET action=MeuServlet.do>
        <input value="chama meu servlet" type=submit>
    </form>
</body>
</html>

web.xml (web deployment descriptor)

    <?xml version="1.0" encoding="UTF-8"?>
    <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xmlns="http://java.sun.com/xml/ns/javaee"
        xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
        id="WebApp_ID" version="3.0">
        <servlet>
            <servlet-name>Meu Servlet</servlet-name>
            <servlet-class>com.example.web.MeuServlet</servlet-class>
        </servlet>
   <servlet-mapping>
        <servlet-name>Meu Servlet</servlet-name>
        <url-pattern>/MeuServlet.do</url-pattern>
    </servlet-mapping>
        <welcome-file-list>
            <welcome-file>index.html</welcome-file>
        </welcome-file-list>
    </web-app>