上传代码

HRS/src/com/hrs/filter/EncodingFilter.java

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+package com.hrs.filter;
+
+import javax.servlet.*;
+import javax.servlet.annotation.WebFilter;
+import java.io.IOException;
+
+/**   
+* Copyright: Copyright (c) 2026 chinasofti
+* 
+* @ClassName: EncodingFilter.java
+* @Description: 字符编码过滤器
+*
+* @version: v1.0.0
+* @author: 赵恒
+* @date: 2026年4月13日 上午9:36:34 
+*
+* Modification History:
+* Date         Author          Version            Description
+*---------------------------------------------------------*
+* 2026年4月13日     赵恒           v1.0.0               新建文件
+*/
+@WebFilter("/*")
+public class EncodingFilter implements Filter {
+    
+    private String encoding = "UTF-8";
+    
+    @Override
+    public void init(FilterConfig filterConfig) throws ServletException {
+        String param = filterConfig.getInitParameter("encoding");
+        if (param != null && !param.isEmpty()) {
+            encoding = param;
+        }
+    }
+    
+    @Override
+    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
+            throws IOException, ServletException {
+        // 设置请求编码
+        request.setCharacterEncoding(encoding);
+        // 设置响应编码
+        response.setCharacterEncoding(encoding);
+        // 继续执行
+        chain.doFilter(request, response);
+    }
+    
+    @Override
+    public void destroy() {
+    }
+}

HRS/src/com/hrs/filter/LoginFilter.java

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+package com.hrs.filter;
+
+import com.hrs.model.entity.User;
+
+import javax.servlet.*;
+import javax.servlet.annotation.WebFilter;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import javax.servlet.http.HttpSession;
+import java.io.IOException;
+
+/**   
+* Copyright: Copyright (c) 2026 chinasofti
+* 
+* @ClassName: LoginFilter.java
+* @Description: 登录过滤器/拦截未登录的请求
+*
+* @version: v1.0.0
+* @author: 赵恒
+* @date: 2026年4月13日 上午9:36:48 
+*
+* Modification History:
+* Date         Author          Version            Description
+*---------------------------------------------------------*
+* 2026年4月13日     赵恒           v1.0.0               新建文件
+*/
+@WebFilter("/*")  // 拦截所有请求
+public class LoginFilter implements Filter {
+    
+    // 不需要登录就能访问的路径
+    private static final String[] PUBLIC_PATHS = {
+    	    "/user/login",      // 登录页面
+    	    "/user/register",   // 注册页面 ✅ 新增
+    	    "/css/",            // 静态资源
+    	    "/js/",             
+    	    "/images/",
+    	    "/jsp/common/",     // 公共页面
+    	    "/index.jsp"        // 首页
+    };
+    
+    @Override
+    public void init(FilterConfig filterConfig) throws ServletException {
+        System.out.println("登录过滤器初始化");
+    }
+    
+    @Override
+    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
+            throws IOException, ServletException {
+        
+        HttpServletRequest req = (HttpServletRequest) request;
+        HttpServletResponse resp = (HttpServletResponse) response;
+        
+        // 1. 获取请求路径
+        String path = req.getRequestURI().substring(req.getContextPath().length());
+        System.out.println("过滤器拦截路径：" + path);
+        
+        // 2. 判断是否是公开路径
+        if (isPublicPath(path)) {
+            chain.doFilter(request, response);
+            return;
+        }
+        
+        // 3. 检查Session中是否有登录用户
+        HttpSession session = req.getSession(false);
+        User loginUser = null;
+        if (session != null) {
+            loginUser = (User) session.getAttribute("loginUser");
+        }
+        
+        // 4. 如果没登录，跳转到登录页
+        if (loginUser == null) {
+            System.out.println("未登录，拦截请求：" + path);
+            resp.sendRedirect(req.getContextPath() + "/user/login");
+            return;
+        }
+        
+        // 5. 已登录，继续请求
+        chain.doFilter(request, response);
+    }
+    
+    /**
+     * 判断是否是公开路径
+     */
+    private boolean isPublicPath(String path) {
+        // 如果是根路径，放行（通常重定向到首页）
+        if (path == null || path.equals("/") || path.isEmpty()) {
+            return true;
+        }
+        
+        // 检查是否在公开路径列表中
+        for (String publicPath : PUBLIC_PATHS) {
+            if (path.startsWith(publicPath)) {
+                return true;
+            }
+        }
+        
+        return false;
+    }
+    
+    @Override
+    public void destroy() {
+        System.out.println("登录过滤器销毁");
+    }
+}