How to run jsp in tomcat-JS Tutorial-php.cn

How to run jsp in tomcat

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Release： 2024-04-21 07:00:32

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To run JSP, you need to: 1. Configure the Web container (such as Tomcat) to support JSP; 2. Create a JSP file with Java code; 3. Use JSPT to compile JSP; 4. Configure the compiled Servlet Deploy to the Web container; 5. Access the JSP page. For example, configure Tomcat and create a JSP file that outputs "Hello, world!" and then use jspc to compile, deploy to Tomcat, and access the URL http://localhost:8080/your-servlet-mapping/your.jsp.

How to run jsp in tomcat

How to run JSP

JSP (JavaServer Pages) is a technology that embeds Java code into HTML pages , allowing developers to create dynamic Web pages. To run JSP, the following steps are required:

1. Configure the Web container

Install a Web container such as Tomcat or GlassFish.
Configure the container to support JSP. This usually involves adding a element in the web.xml deployment descriptor.

2. Write a JSP file

Create a .jsp file that contains HTML code and embedded Java code.
For example:

<code class="html"><%@ page import="java.util.Date" %>
<html>
<body>
    <h1>当前时间：<%= new Date() %></h1>
</body>
</html></code>

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3. Compile the JSP file

Use the JavaServer Pages Standard Toolkit (JSPT) to compile the JSP file Compiled into Java Servlet.
Type the following command in the command line:

<code>jspc path/to/your.jsp</code>

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4. Deploy Servlet

Deploy the compiled Servlet to in the web container. This usually involves copying the .class file into the container's webapps directory.

5. Access the JSP page

Enter the URL of the JSP page in your web browser.
For example: http://localhost:8080/your-servlet-mapping/your.jsp

Example:

Assume that you Tomcat has been configured and the following JSP file has been written:

<code class="html"><%@ page import="java.util.Date" %>
<html>
<body>
    <h1>你好，<% out.println("世界"); %>！</h1>
</body>
</html></code>

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Follow the steps below to run this JSP:

Use the jspc command to compile the JSP file:

<code>jspc path/to/hello-world.jsp</code>

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Deploy the hello-world.class file to the webapps directory of Tomcat.
Open http://localhost:8080/hello-world.jsp in the browser.

The page will display the following:

<code><h1>你好，世界！</h1></code>

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