本文介紹了spring-boot 允許接口跨域并實(shí)現(xiàn)攔截（CORS），分享給大家，也給自己留個(gè)筆記
pom.xml(依賴(lài)的jar)
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// 在spring-boot-starter-web的啟動(dòng)器中，已經(jīng)依賴(lài)好了<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId></dependency> |
CORS跨域的配置（主要配置允許什么樣的方法跨域）
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import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;import org.springframework.web.cors.CorsConfiguration;import org.springframework.web.cors.UrlBasedCorsConfigurationSource;import org.springframework.web.filter.CorsFilter;import org.springframework.web.servlet.config.annotation.CorsRegistry;import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;import java.util.ArrayList;import java.util.List;/** * Created by Msater Zg on 2017/4/3. */@Configurationpublic class CorsConfig extends WebMvcConfigurerAdapter { @Override public void addCorsMappings(CorsRegistry registry) { registry.addMapping("/**") .allowedOrigins("*") .allowCredentials(true) .allowedMethods("GET", "POST", "DELETE", "PUT") .maxAge(3600); } private CorsConfiguration buildConfig() { CorsConfiguration corsConfiguration = new CorsConfiguration(); List<String> list = new ArrayList<>(); list.add("*"); corsConfiguration.setAllowedOrigins(list); /* // 請(qǐng)求常用的三種配置，*代表允許所有，當(dāng)時(shí)你也可以自定義屬性（比如header只能帶什么，只能是post方式等等） */ corsConfiguration.addAllowedOrigin("*"); corsConfiguration.addAllowedHeader("*"); corsConfiguration.addAllowedMethod("*"); return corsConfiguration; } @Bean public CorsFilter corsFilter() { UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource(); source.registerCorsConfiguration("/**", buildConfig()); return new CorsFilter(source); }} |
攔截器配置(可以根據(jù)不同路徑，配置不同的攔截器)
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import org.springframework.web.servlet.HandlerInterceptor;import org.springframework.web.servlet.ModelAndView;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;/** * Created by Msater Zg on 2017/4/5. * 攔截器 */public class ApiInterceptor implements HandlerInterceptor { @Override public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception { // 請(qǐng)求前調(diào)用 System.out.println("攔截了"); return true; } @Override public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception { // 請(qǐng)求過(guò)程中調(diào)用 System.out.println("攔截了"); } @Override public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception { // 請(qǐng)求完成時(shí)調(diào)用 System.out.println("攔截了"); }} |
攔截器管理類(lèi)，用于生成項(xiàng)目的攔截器鏈
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import org.springframework.context.annotation.Configuration;import org.springframework.web.servlet.config.annotation.InterceptorRegistry;import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;/** * Created by Msater Zg on 2017/4/5. * 攔截器管理工具 */@Configurationpublic class MyWebAppConfigurer extends WebMvcConfigurerAdapter { @Override public void addInterceptors(InterceptorRegistry registry) { // 多個(gè)攔截器組成一個(gè)攔截器鏈 // addPathPatterns 用于添加攔截規(guī)則 // excludePathPatterns 用戶(hù)排除攔截 registry.addInterceptor(new ApiInterceptor()).addPathPatterns("/user/**"); //對(duì)來(lái)自/user/** 這個(gè)鏈接來(lái)的請(qǐng)求進(jìn)行攔截 super.addInterceptors(registry); }} |
結(jié)語(yǔ)
實(shí)現(xiàn)跨域的方式有很多，這只是其中一種。有什么不對(duì)的地方希望能及時(shí)指出。謝謝！
以上就是本文的全部?jī)?nèi)容，希望對(duì)大家的學(xué)習(xí)有所幫助，也希望大家多多支持服務(wù)器之家。
原文鏈接：http://www.jianshu.com/p/db0d8d45c242?utm_source=tuicool&utm_medium=referral
