Thymeleaf：列表（四）

淡淡的烟草味﹌ 2024-03-22 14:34 18阅读 0赞

#### 列表样式 ####

![在这里插入图片描述][c77a10f00f964983a20a346afc80f487.png_pic_center]

#### 改登录跳转 ####

import javax.servlet.ServletException;
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
    import javax.servlet.http.HttpSession;
    import java.io.IOException;
    
    public class AuthServlet extends ModelBaseServlet {
        
    
        private EmpService empService = new EmpServiceImpl();
    
        protected void login(
                HttpServletRequest request,
                HttpServletResponse response)
                throws ServletException, IOException {
        
    
            try {
        
                // 1、获取请求参数
                String loginAccount = request.getParameter("loginAccount");
                String loginPassword = request.getParameter("loginPassword");
    
                // 2、调用 EmpService 方法执行登录逻辑
                Emp emp = empService.getEmpByLoginAccount(loginAccount, loginPassword);
    
                // 3、通过 request 获取 HttpSession 对象
                HttpSession session = request.getSession();
    
                // 4、将查询到的 Emp 对象存入 Session 域
                session.setAttribute(ImperialCourtConst.LOGIN_EMP_ATTR_NAME, emp);
    
                // 5、前往指定页面视图
                // 前往临时页面
                // String templateName = "temp";
                // processTemplate(templateName, request, response);
    
                // 前往正式的目标地址 列表
                response.sendRedirect(request.getContextPath() + "/work?method=showMemorialsDigestList");
    
            } catch (Exception e) {
        
                e.printStackTrace();
    
                // 6、判断此处捕获到的异常是否是登录失败异常
                if (e instanceof LoginFailedException) {
        
                    // 7、如果是登录失败异常则跳转回登录页面
                    // ①将异常信息存入请求域
                    request.setAttribute("message", e.getMessage());
    
                    // ②处理视图：index
                    processTemplate("index", request, response);
    
                }else {
        
                    // 8、如果不是登录异常则封装为运行时异常继续抛出
                    throw new RuntimeException(e);
    
                }
    
            }
    
        }
    
        protected void logout(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        
    
            // 1、通过 request 对象获取 HttpSession 对象
            HttpSession session = request.getSession();
    
            // 2、将 HttpSession 对象强制失效
            session.invalidate();
    
            // 3、回到首页
            String templateName = "index";
            processTemplate(templateName, request, response);
        }
    }

#### WorkServlet ####

import javax.servlet.ServletException;
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
    
    
    public class WorkServlet extends ModelBaseServlet {
        
    
        private MemorialsService memorialsService = new MemorialsServiceImpl();
    
        protected void showMemorialsDigestList(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        
    
            // 1、调用 Service 方法查询数据
            List<Memorials> memorialsList = memorialsService.getAllMemorialsDigest();
    
            // 2、将查询得到的数据存入请求域
            request.setAttribute("memorialsList", memorialsList);
    
            // 3、渲染视图
            String templateName = "memorials-list";
            processTemplate(templateName, request, response);
        }
    }

#### 列表页面 ####

<!DOCTYPE html>
    <html lang="en" xml:th="http://www.thymeleaf.org">
    <head>
        <meta charset="UTF-8">
        <title>Title</title>
        <style type="text/css">
            table {
          
                border-collapse: collapse;
                margin: 0px auto 0px auto;
            }
    
            table th, td {
          
                border: 1px solid black;
                text-align: center;
            }
    
            div {
          
                text-align: right;
            }
        </style>
    </head>
    <body>
    
        
        <div>
            <span th:if="${session.loginInfo.empPosition == 'emperor'}">恭请皇上圣安</span>
            <span th:if="${session.loginInfo.empPosition == 'minister'}">给<span th:text="${session.loginInfo.empName}">XXX</span>大人请安</span>
            <a th:href="@{/auth?method=logout}">退朝</a>
        </div>
    
    	
    	<table>
    	    <thead>
    	        <tr>
    	            <th>奏折标题</th>
    	            <th>内容摘要</th>
    	            <th>上疏大臣</th>
    	            <th>上疏时间</th>
    	            <th>奏折状态</th>
    	            <th>奏折详情</th>
    	        </tr>
    	    </thead>
    	    <tbody th:if="${#lists.isEmpty(memorialsList)}">
    	        <tr>
    	            <td colspan="6">没有人上过折子</td>
    	        </tr>
    	    </tbody>
    	    <tbody th:if="${not #lists.isEmpty(memorialsList)}">
    	        <tr th:each="memorials : ${memorialsList}">
    	            <td th:switch="${memorials.memorialsStatus}">
    	                <span th:text="${memorials.memorialsTitle}" th:case="0" style="color: red;">奏折标题</span>
    	                <span th:text="${memorials.memorialsTitle}" th:case="1" style="color: blue;">奏折标题</span>
    	                <span th:text="${memorials.memorialsTitle}" th:case="2">奏折标题</span>
    	            </td>
    	            <td th:switch="${memorials.memorialsStatus}">
    	                <span th:text="${memorials.memorialsContentDigest}" th:case="0" style="color: red;">内容摘要</span>
    	                <span th:text="${memorials.memorialsContentDigest}" th:case="1" style="color: blue;">内容摘要</span>
    	                <span th:text="${memorials.memorialsContentDigest}" th:case="2">内容摘要</span>
    	            </td>
    	            <td th:switch="${memorials.memorialsStatus}">
    	                <span th:text="${memorials.memorialsEmpName}" th:case="0" style="color: red;">上疏大臣</span>
    	                <span th:text="${memorials.memorialsEmpName}" th:case="1" style="color: blue;">上疏大臣</span>
    	                <span th:text="${memorials.memorialsEmpName}" th:case="2">上疏大臣</span>
    	            </td>
    	            <td th:switch="${memorials.memorialsStatus}">
    	                <span th:text="${memorials.memorialsCreateTime}" th:case="0" style="color: red;">上疏时间</span>
    	                <span th:text="${memorials.memorialsCreateTime}" th:case="1" style="color: blue;">上疏时间</span>
    	                <span th:text="${memorials.memorialsCreateTime}" th:case="2">上疏时间</span>
    	            </td>
    	            <td th:switch="${memorials.memorialsStatus}">
    	                <span th:case="0" style="color: red;">未读</span>
    	                <span th:case="1" style="color: blue;">已读</span>
    	                <span th:case="2">已批示</span>
    	            </td>
    	
    	            <td>
    	                <a th:href="@{/work?method=detail}">奏折详情</a>
    	            </td>
    	        </tr>
    	    </tbody>
    	</table>
    
    </body>
    </html>

#### web.xml ####

<filter>
            <filter-name>loginFilter</filter-name>
            <filter-class>com.atguigu.imperial.court.filter.LoginFilter</filter-class>
        </filter>
        <filter-mapping>
            <filter-name>loginFilter</filter-name>
            <url-pattern>/work</url-pattern>
        </filter-mapping>

[c77a10f00f964983a20a346afc80f487.png_pic_center]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/22/5173ceb402e3419a98ed8c911e38485e.png