步驟：

1.實現WebMvcConfigurer配置類

2.實現攔截器 3

. 把攔截器添加到配置中

4.添加需要攔截的請求

5.添加需要排除的請求

package com.zp.springbootdemo.interceptor;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;import org.springframework.web.servlet.config.annotation.InterceptorRegistry;import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;/** * 和springmvc的webmvc攔截配置一樣 * @author zp */@Configurationpublic class WebConfigurer implements WebMvcConfigurer { /** * 攔截器配置 * @param registry */ @Override public void addInterceptors(InterceptorRegistry registry) { // addPathPatterns攔截所有請求,excludePathPatterns排除特殊的請求 //registry.addInterceptor(LoginInterceptor()).addPathPatterns('/**'); registry.addInterceptor(AuthorityInterceptor()).addPathPatterns('/**'); //excludePathPatterns 排除的請求// registry.addInterceptor(LoginInterceptor()).addPathPatterns('/**').excludePathPatterns('/user/**');// registry.addInterceptor(AuthorityInterceptor()).addPathPatterns('/**').excludePathPatterns('/user/**'); } /** * 攔截器一 * @return */ @Bean public LoginInterceptor LoginInterceptor() { return new LoginInterceptor(); } /** * 攔截器二 * @return */ @Bean public AuthorityInterceptor AuthorityInterceptor() { return new AuthorityInterceptor(); }}

基于URL實現的攔截器：

package com.zp.springbootdemo.interceptor;import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;public class LoginInterceptor extends HandlerInterceptorAdapter { /** * 在請求處理之前進行調用（Controller方法調用之前） * 基于URL實現的攔截器 * @param request * @param response * @param handler * @return * @throws Exception */ @Override public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception { String path = request.getServletPath(); System.out.println('當前請求路徑：'+path); System.out.println('=========進入攔截器1==================='); if (path.matches(Const.NO_INTERCEPTOR_PATH)) { //不需要的攔截直接過 System.out.println('=========無需攔截==================='); return true; } else { System.out.println('=========開始攔截==================='); // 這寫你攔截需要干的事兒，比如取緩存，SESSION，權限判斷等 String token = request.getParameter('token'); if(token == null){System.out.println('=========攔截完成==================='+false);return false; } System.out.println('=========攔截完成==================='+true); return true; } }}

關鍵代碼：path.matches(Const.NO_INTERCEPTOR_PATH 就是基于正則匹配的url。

package com.zp.springbootdemo.interceptor;/** * @author zp * @explain 常量類 */public class Const { public static final String SUCCESS = 'SUCCESS'; public static final String ERROR = 'ERROR'; public static final String FIALL = 'FIALL'; /**********************對象和個體****************************/ public static final String SESSION_USER = 'loginedAgent'; // 用戶對象 public static final String SESSION_LOGINID = 'sessionLoginID'; // 登錄ID public static final String SESSION_USERID = 'sessionUserID'; // 當前用戶對象ID編號 public static final String SESSION_USERNAME = 'sessionUserName'; // 當前用戶對象ID編號 public static final Integer PAGE = 10; // 默認分頁數 public static final String SESSION_URL = 'sessionUrl'; // 被記錄的url public static final String SESSION_SECURITY_CODE = 'sessionVerifyCode'; // 登錄頁驗證碼 // 時間 緩存時間 public static final int TIMEOUT = 1800;// 秒 public static final String ON_LOGIN = '/logout.htm'; public static final String LOGIN_OUT = '/toLogout'; // 不驗證URL anon：不驗證/authc：受控制的 public static final String NO_INTERCEPTOR_PATH ='.*/((.css)|(.js)|(images)|(login)|(anon)).*';}

測試：

請求地址：http://127.0.0.1:8080/user/getUser?token=123

結果：

基于注解的攔截器

①創建注解：

package com.zp.springbootdemo.interceptor;import java.lang.annotation.ElementType;import java.lang.annotation.Retention;import java.lang.annotation.RetentionPolicy;import java.lang.annotation.Target;/** * 在需要登錄驗證的Controller的方法上使用此注解 */@Target({ElementType.METHOD})// 可用在方法名上@Retention(RetentionPolicy.RUNTIME)// 運行時有效public @interface LoginRequired {}

②創建攔截器：

package com.zp.springbootdemo.interceptor;import org.springframework.web.method.HandlerMethod;import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import java.lang.reflect.Method;public class AuthorityInterceptor extends HandlerInterceptorAdapter { @Override public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception { System.out.println('===============進入攔截器2====================='); // 如果不是映射到方法直接通過 if (!(handler instanceof HandlerMethod)) { System.out.println('===============無需攔截====================='); return true; } // ①:START 方法注解級攔截器 HandlerMethod handlerMethod = (HandlerMethod) handler; Method method = handlerMethod.getMethod(); // 判斷接口是否需要登錄 LoginRequired methodAnnotation = method.getAnnotation(LoginRequired.class); // 有 @LoginRequired 注解，需要認證 if (methodAnnotation != null) { // 這寫你攔截需要干的事兒，比如取緩存，SESSION，權限判斷等 System.out.println('===============開始攔截====================='); String token = request.getParameter('token'); if(token == null){ System.out.println('=========攔截完成==================='+false); return false; } System.out.println('=========攔截完成==================='+true); return true; } System.out.println('===============無需攔截==================='); return true; }}

測試接口代碼1：

package com.zp.springbootdemo.system.controller;import com.zp.springbootdemo.interceptor.LoginRequired;import com.zp.springbootdemo.system.service.UserService;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.web.bind.annotation.GetMapping;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestParam;import org.springframework.web.bind.annotation.RestController;import java.util.Map;@RestController@RequestMapping('/user')public class UserController { @Autowired private UserService userService; @GetMapping('/getUser') //@LoginRequired public Map<String,String> getUser(@RequestParam Map<String,String> user){ return userService.getUser(user); }}請求地址：

http://127.0.0.1:8080/user/getUser?token=123

結果：

測試接口代碼2：

package com.zp.springbootdemo.system.controller;import com.zp.springbootdemo.interceptor.LoginRequired;import com.zp.springbootdemo.system.service.UserService;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.web.bind.annotation.GetMapping;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestParam;import org.springframework.web.bind.annotation.RestController;import java.util.Map;@RestController@RequestMapping('/user')public class UserController { @Autowired private UserService userService; @GetMapping('/getUser') @LoginRequired public Map<String,String> getUser(@RequestParam Map<String,String> user){ return userService.getUser(user); }}

請求地址：

http://127.0.0.1:8080/user/getUser?token=123

結果：

到此這篇關于SpringBoot配置攔截器方式實例代碼的文章就介紹到這了,更多相關SpringBoot配置攔截器內容請搜索好吧啦網以前的文章或繼續瀏覽下面的相關文章希望大家以后多多支持好吧啦網！