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［java web 入门］（一）MyEclipse & HelloWorld 记录

2014-06-07 09:22 459 查看

第一部，下载安装MyEclipse for mac.

http://downloads.myeclipseide.com/downloads/products/eworkbench/2014/installers/myeclipse-spring-2014-GA-offline-installer-macosx.dmg

http://downloads.myeclipseide.com/downloads/products/eworkbench/2014/installers/myeclipse-pro-2014-GA-offline-installer-macosx.dmg

第二部，helloWorld

1,新建项目

2, 新建MyServlet类，继承字HttpServlet，重写doGet和doPost方法，调用process方法响应请求。

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@SuppressWarnings("serial")
public class MyServlet extends HttpServlet {

@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
process(req,resp);
}

@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
process(req,resp);
}

/**
* @param req
* @param resp
* @throws ServletException
* @throws IOException
*/
protected void process(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
resp.setContentType("text/html");
PrintWriter out = resp.getWriter();
out.println("<HTML><HEAD><TITLE>My First Servlet</TITLE></HEAD>");
out.println("<BODY>");
out.println("<H1>Hello , Jason Hu</H1>");
out.println("</BODY></HTML>");
}

}

3，在web.xml中配置servlet及servlet-mapping

<?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">
<display-name>web01</display-name>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>

<servlet>
<servlet-name>MyFirstServlet</servlet-name>
<servlet-class>com.jason.web.helloworld.MyServlet</servlet-class>
</servlet>

<servlet-mapping>
<servlet-name>MyFirstServlet</servlet-name>
<url-pattern>/MyServlet</url-pattern>
</servlet-mapping>

</web-app>

4,执行项目，http://192.168.1.117:8080/HelloWorld/MyServlet

5,项目代码包: 点击打开链接

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［java web 入门］（一）MyEclipse &amp; HelloWorld 记录

［java web 入门］（一）MyEclipse & HelloWorld 记录