servlet +thymeleaf渲染引擎
一、maven坐标
<dependency><groupId>org.thymeleaf</groupId><artifactId>thymeleaf</artifactId><version>3.0.12.RELEASE</version> <!-- 使用适当的Thymeleaf版本 -->
</dependency>
<dependency><groupId>javax.servlet</groupId><artifactId>javax.servlet-api</artifactId><version>4.0.1</version> <!-- 使用适当的Servlet API版本 --><scope>provided</scope>
</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 Application</display-name><!-- 在servletContext中配置上下文参数 --><context-param><param-name>view-prefix</param-name><param-value>/WEB-INF/templates/</param-value></context-param><context-param><param-name>view-suffix</param-name><param-value>.html</param-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;@Overridepublic 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{@Overrideprotected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {doGet(req,resp);}@Overrideprotected 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
<!DOCTYPE html>
<!--在页面上外部导入thymeleaf-->
<html xmlns:th="http://www.thymeleaf.org">
<head><meta charset="UTF-8"><title>Title</title><style>table {border-collapse: collapse;}table, td, th {border: 1px solid black;}#gameid {margin: 12px auto;collapse: 1px;}td {text-align: center;width: 160px;}</style>
</head>
<body>
<table id="gameid"><tr><th class="w20">游戏名</th><th>操作</th></tr><tr th:if="${#lists.isEmpty(session.list)}"><td colspan="4">对不起，库存为空！</td></tr><tr th:unless="${#lists.isEmpty(session.list)}" th:each="gamename : ${session.list}"><td><a th:text="${gamename}" href="#">默认没有如果不是通过服务器启动，就显示这个文本</a></td><td><a th:text="购买" href="#">默认没有如果不是通过服务器启动，就显示这个文本</a></td></tr>
</table>
</body>
</html>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-2allsobaiduweb~default-0-129747818.142v96pc_search_result_base9&spm=1018.2226.3001.4187
)
)
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