eclipse新建和配置servlet

程序员文章站 2022-06-03 09:59:25

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1.新建项目，右键选择其他项目，找到这个Dynamic Web Project，点击下一步。

eclipse新建和配置servlet

2.填写项目名，点击下一步

eclipse新建和配置servlet

3.继续点击下一步，出现下面的画面，选中它，完成

eclipse新建和配置servlet

4.创建java项目，也就是创建servlet，并继承HttpServlet类。crtl+shift+o会导入你所需要的相关包

eclipse新建和配置servlet

5.在空白处右击，选择source->override->选择doPost和doGet方法

eclipse新建和配置servlet

6.现在来编写doPost()方法

package alang;

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;

public class alangServlet extends HttpServlet {

	@Override
	protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
		// TODO 自动生成的方法存根
		this.doPost(req, resp);
	}

//下面这个方法是用来处理使用post方式提交的请求
	@Override
	protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
		// TODO 自动生成的方法存根
		req.setCharacterEncoding("utf-8");
		resp.setContentType("text/html;charset=utf-8");//解决乱码问题
		PrintWriter out=resp.getWriter();//接受设为out
		out.println("<HTML>");
		out.println("<head><title>hi,servlet</title></head>");
		out.println("<body>");
		out.println("how are you");
		out.println("</body>");
		out.println("</HTML>");
		out.close();
	}

}

7.现在来配置web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">
  <display-name>alang</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>alangServlet</servlet-name> <!--一般设为servlet类的名字-->
  		<servlet-class>alang.alangServlet</servlet-class><!--包名+类名-->
  </servlet>
<!--servlet映射配置-->
  <servlet-mapping>
  		<servlet-name>alangServlet</servlet-name><!--和上面保持一致-->
  		<url-pattern>/alang</url-pattern><!--servlet映射路径必须加/-->
  </servlet-mapping>
  		
</web-app>

eclipse新建和配置servlet