servlet +thymeleaf渲染引擎

servlet +thymeleaf渲染引擎

一、maven坐标

<dependency>
  <groupId>org.thymeleafgroupId>
  <artifactId>thymeleafartifactId>
  <version>3.0.12.RELEASEversion> 
dependency>
<dependency>
  <groupId>javax.servletgroupId>
  <artifactId>javax.servlet-apiartifactId>
  <version>4.0.1version> 
  <scope>providedscope>
dependency>

二、web.xml配置

DOCTYPE web-app PUBLIC
 "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
 "http://java.sun.com/dtd/web-app_2_3.dtd" >

<web-app>
  <display-name>Archetype Created Web Applicationdisplay-name>
  
  <context-param>
    <param-name>view-prefixparam-name>
    <param-value>/WEB-INF/templates/param-value>
  context-param>
  <context-param>
    <param-name>view-suffixparam-name>
    <param-value>.htmlparam-value>
  context-param>

web-app>

二、BaseServlet

import org.thymeleaf.TemplateEngine;
import org.thymeleaf.context.WebContext;
import org.thymeleaf.templatemode.TemplateMode;
import org.thymeleaf.templateresolver.ServletContextTemplateResolver;

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

public class ViewBaseServlet extends HttpServlet {

    private TemplateEngine templateEngine;

    @Override
    public void init() throws ServletException {

        // 1.获取ServletContext对象
        ServletContext servletContext = this.getServletContext();

        // 2.创建Thymeleaf解析器对象
        ServletContextTemplateResolver templateResolver = new ServletContextTemplateResolver(servletContext);

        // 3.给解析器对象设置参数
        // ①HTML是默认模式，明确设置是为了代码更容易理解
        templateResolver.setTemplateMode(TemplateMode.HTML);

        // ②设置前缀
        String viewPrefix = servletContext.getInitParameter("view-prefix");

        templateResolver.setPrefix(viewPrefix);

        // ③设置后缀
        String viewSuffix = servletContext.getInitParameter("view-suffix");

        templateResolver.setSuffix(viewSuffix);

        // ④设置缓存过期时间（毫秒）
        templateResolver.setCacheTTLMs(60000L);

        // ⑤设置是否缓存
        templateResolver.setCacheable(true);

        // ⑥设置服务器端编码方式
        templateResolver.setCharacterEncoding("utf-8");

        // 4.创建模板引擎对象
        templateEngine = new TemplateEngine();

        // 5.给模板引擎对象设置模板解析器
        templateEngine.setTemplateResolver(templateResolver);

    }

    protected void processTemplate(String templateName, HttpServletRequest req, HttpServletResponse resp) throws IOException {
        // 1.设置响应体内容类型和字符集
        resp.setContentType("text/html;charset=UTF-8");

        // 2.创建WebContext对象
        WebContext webContext = new WebContext(req, resp, getServletContext());

        // 3.处理模板数据
        templateEngine.process(templateName, webContext, resp.getWriter());
    }
}

四、demoServlet

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

@WebServlet("/testservelt")
public class testservlet  extends  ViewBaseServlet{

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

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException, IOException {
         HttpSession httpSession= req.getSession();
        List list=new ArrayList();
        list.add("战神");
        list.add("艾尔登法环");
        list.add("卧龙苍天陨落");
        list.add("霍格沃茨：遗产");
        httpSession.setAttribute("list",list);
        super.processTemplate("testservlet",req,resp);
    }
}

五、html页面

  
  
  



  

    
游戏名
    
操作
  
  

    
对不起，库存为空！
  
  


    
默认没有如果不是通过服务器启动，就显示这个文本

    
默认没有如果不是通过服务器启动，就显示这个文本
  

引用地址：

https://blog.csdn.net/u011863822/article/details/129747818?ops_request_misc=&request_id=&biz_id=102&utm_term=javaweb%E9%A1%B9%E7%9B%AE%E4%BD%BF%E7%94%A8thymleaf&utm_medium=distribute.pc_search_result.none-task-blog-2_allsobaiduweb~default-0-129747818.142^v96pc_search_result_base9&spm=1018.2226.3001.4187