Using Jetty6 for Web server processing in Java API development

In Java API development, using a web server is an essential step. Jetty 6 is a lightweight, embeddable web server that can provide efficient HTTP services. This article will introduce in detail how to use Jetty6 for web server processing in Java API development.

1. Environment setup

To use Jetty 6, you first need to download the Jetty 6 installation package and extract it to any directory. Then, you need to add the Jetty 6 libraries to your project's Classpath. This can be done through the Eclipse editor, right-click the project, select Properties > Java Build Path > Libraries, then click the Add External JARs... button, select the Jetty 6 libraries, and complete the addition.

2. Create a Jetty 6 Servlet project

In order to demonstrate how to use Jetty6 for Web server processing in Java API development, we will create a simple HttpServlet and deploy it in Jetty 6 . The specific steps are as follows:

1. Create a new project: Create a new Java Web project in Eclipse. Select File > New > Project..., select Web > Dynamic Web Project, fill in the basic information of the project, and click Finish to complete the creation.
2. Add Servlet dependency: right-click the project, select Properties > Java Build Path, in the Libraries tab, click the Add Library... button, select Server Runtime, then select Jetty 6, and click Finish to complete the addition.
3. Writing Servlet class: Create a new Servlet class in the src directory, inherit HttpServlet, and implement the doGet method. The specific code is as follows:

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class HelloServlet extends HttpServlet {
    
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=utf-8");
        response.getWriter().println("<h1>Hello Jetty6!</h1>");
    }
}

4. Configure Servlet: Create a new web.xml file in the /WEB-INF directory and add Servlet configuration information. The specific code is as follows:

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
version="2.5">
    <servlet>
        <servlet-name>HelloServlet</servlet-name>
        <servlet-class>HelloServlet</servlet-class>
    </servlet>
    <servlet-mapping>
        <servlet-name>HelloServlet</servlet-name>
        <url-pattern>/hello</url-pattern>
    </servlet-mapping>
</web-app>

5. Run the project: right-click the project, select Run As > Run on Server, select Jetty 6 in the pop-up dialog box, click Next, and then click Finish. Wait for Jetty 6 to start up.
6. Test project: Visit http://localhost:8080/project name/hello in the browser to see the HelloWorld page.

3. Detailed explanation of Jetty 6 configuration

The configuration of Jetty 6 is very flexible and can be configured through XML files and Java code. Below we will introduce some common configuration items of Jetty 6.

1. Start port

You can specify the startup port of Jetty 6 by configuring the start.ini file. The default is port 8080. The port number can be modified by modifying the jetty.port variable in the start.ini file. For example:

--exec
-exec ./bin/jetty.sh $ARGS

jetty.port=80

2. Servlet configuration

The Servlet configuration of Jetty 6 can be configured through the web.xml file. Add the web.xml file in the /WEB-INF directory, and then add the servlet and servlet-mapping configuration items. For example:

<servlet>
    <servlet-name>HelloServlet</servlet-name>
    <servlet-class>HelloServlet</servlet-class>
</servlet>
<servlet-mapping>
    <servlet-name>HelloServlet</servlet-name>
    <url-pattern>/hello</url-pattern>
</servlet-mapping>

3. HTTPS configuration

Jetty 6 supports the HTTPS protocol, and HTTPS can be enabled by configuring the jetty.xml file. First, add jetty-sslengine.jar to the libraries of Jetty 6, then create the jetty.xml file in the /etc directory and add the following content:

<Configure id="Server" class="org.eclipse.jetty.server.Server">
    <Call name="addConnector">
        <Arg>
            <New class="org.eclipse.jetty.server.ssl.SslSelectChannelConnector">
                <Arg><Ref id="Server"/></Arg>
                <Set name="port">8443</Set>
                <Set name="maxIdleTime">30000</Set>
                <Set name="keystore"><SystemProperty name="jetty.home" default="."/>/etc/keystore</Set>
                <Set name="password">OBF:1vv71ue910871we0v8123</Set>
                <Set name="keyPassword">OBF:1vv71ue910871we0v8123</Set>
                <Set name="truststore"><SystemProperty name="jetty.home" default="."/>/etc/truststore</Set>
                <Set name="trustPassword">OBF:1vv71ue910871we0v8123</Set>
            </New>
        </Arg>
    </Call>
</Configure>

In the above configuration, port 443 is used to handle HTTPS Request, keystore, password, truststore and trustPassword are used for certificate and key management.

4. Log configuration

The log configuration of Jetty 6 can be configured by adding the --log parameter in the start.ini file. For example:

--exec
-exec ./bin/jetty.sh $ARGS

jetty.port=80

--log logs/yyyy_mm_dd.request.log
--log logs/yyyy_mm_dd.info.log
--log logs/yyyy_mm_dd.debug.log

In the above configuration, logs/yyyy_mm_dd.request.log, logs/yyyy_mm_dd.info.log and logs/yyyy_mm_dd.debug.log are used to record request logs, information logs and debug logs respectively. .

Summary

This article details how to use Jetty 6 for Web server processing in Java API development. Through the study of this article, we can create a Jetty 6 Servlet project in Eclipse, master the common configuration items of Jetty 6, and easily develop efficient Web services.

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