使用Eclipse开发Servlet

末蓝、 2021-09-30 08:10 384阅读 0赞

**一 创建Servlet工程ServletWeb**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70][]

**二 选择完Dynamic Web Project后，点击【Next】**

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**三 输入project name为ServletWeb，然后点击【Next】**

**四 一直点击【Next】，直到出现Web Moudule页面，勾选web.xml,然后点击【Finish】**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70 2][]

**五 新建servlet文件**

1 右键盘【src】，新建一个servlet文件

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70 3][]

2 点击【Next】

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70 4][]

3 再点击【Next】

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70 5][]

4 点击【Finish】

**六 修改HelloWorld.java**

package servlet;
    import java.io.IOException;
    import javax.servlet.ServletException;
    import javax.servlet.annotation.WebServlet;
    import javax.servlet.http.HttpServlet;
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
    import java.io.PrintWriter;
    /**
    * Servlet implementation class HelloWorld
    */
    @WebServlet("/HelloWorld")
    public class HelloWorld extends HttpServlet {
         private static final long serialVersionUID = 1L;
           
        /**
         * @see HttpServlet#HttpServlet()
         */
        public HelloWorld() {
            super();
            // TODO Auto-generated constructor stub
        }
         /**
          * @see HttpServlet#doGet(HttpServletRequest request,  HttpServletResponse response)
          */
         protected void doGet(HttpServletRequest request,  HttpServletResponse response) throws ServletException,  IOException {
               // TODO Auto-generated method stub
            response.setContentType("text/html");
            PrintWriter out = response.getWriter();
            out.println("<html>");
            out.println("<head>");
            out.println("<title>Hello Servlet!</title>");
            out.println("</head>");
            out.println("<body>");
            out.println("<h1>Hello World!</h1>");
            out.println("</body>");
            out.println("</html>");
            out.close() ;
         }
    }

**七 修改WebContent的WEB-INF下的web.xml**

<?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>ServletWeb</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>servletDemo</servlet-name>
         <servlet-class>HelloWorld</servlet-class>
      </servlet>
      <servlet-mapping>
         <servlet-name>servletDemo</servlet-name>
         <url-pattern>/hello.do</url-pattern>
      </servlet-mapping>  
    </web-app>

**八 运行程序**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70 6][]

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