Idea基于springBoot的拦截器的简单实现

2024-12-27 技术教程

一、创建SpringBoot项目
二、配置文件：
1、启动文件InterceptortestApplication.java

package com.jane.interceptortest;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;import org.springframework.context.annotation.ComponentScan;@SpringBootApplication@ComponentScan("com.jane")public class InterceptortestApplication { public static void main(String[] args) { SpringApplication.run(InterceptortestApplication.class, args); }}

2、属性文件，applicaiton.properties

server.port=6009

3、依赖文件，pom.xml

<?xml version="1.0" encoding="UTF-8"?><project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.1.4.RELEASE</version> <relativePath/>  </parent> <groupId>com.jane</groupId> <artifactId>interceptortest</artifactId> <version>0.0.1-SNAPSHOT</version> <name>interceptortest</name> <description>Demo project for Spring Boot</description> <properties> <java.version>1.8</java.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build></project>

4、控制器，TestController

package com.jane.interceptortest.controller;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RestController;@RestController@RequestMapping("/job")public class TestController { @RequestMapping("/test") public String test() { System.out.println("RUL 执行 test"); return "test"; }}

5、拦截器TestInterceptor

package com.jane.interceptortest.interceptor;import org.springframework.context.annotation.Configuration;import org.springframework.web.servlet.HandlerInterceptor;import org.springframework.web.servlet.ModelAndView;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;@Configurationpublic class TestInterceptor implements HandlerInterceptor { public TestInterceptor(){} public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) { String queryString = request.getQueryString(); String requestURL = request.getRequestURL().toString(); System.out.println("拦截器1，如入参：" + queryString + "访问地址，" + requestURL); return true; } public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) { System.out.println("拦截器2"); } public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) { System.out.println("拦截器3"); }}

6、注册拦截器

package com.jane.interceptortest.interceptor;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.context.annotation.Configuration;import org.springframework.web.servlet.config.annotation.InterceptorRegistry;import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;@Configurationpublic class WebMvcConfg extends WebMvcConfigurationSupport { @Autowired private TestInterceptor interceptorConfig; @Override public void addInterceptors(InterceptorRegistry registry) { //注册自定义拦截器，添加拦截路径和排除拦截路径 registry.addInterceptor(interceptorConfig).addPathPatterns("/job/**"); }}

三、启动运行