本文介紹了spring-boot 允許接口跨域并實現攔截(CORS),分享給大家,也給自己留個筆記
pom.xml(依賴的jar)
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// 在spring-boot-starter-web的啟動器中,已經依賴好了 < 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. */ @Configuration public 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); /* // 請求常用的三種配置,*代表允許所有,當時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 { // 請求前調用 System.out.println( "攔截了" ); return true ; } @Override public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception { // 請求過程中調用 System.out.println( "攔截了" ); } @Override public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception { // 請求完成時調用 System.out.println( "攔截了" ); } } |
攔截器管理類,用于生成項目的攔截器鏈
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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 */ @Configuration public class MyWebAppConfigurer extends WebMvcConfigurerAdapter { @Override public void addInterceptors(InterceptorRegistry registry) { // 多個攔截器組成一個攔截器鏈 // addPathPatterns 用于添加攔截規則 // excludePathPatterns 用戶排除攔截 registry.addInterceptor( new ApiInterceptor()).addPathPatterns( "/user/**" ); //對來自/user/** 這個鏈接來的請求進行攔截 super .addInterceptors(registry); } } |
結語
實現跨域的方式有很多,這只是其中一種。有什么不對的地方希望能及時指出。謝謝!
以上就是本文的全部內容,希望對大家的學習有所幫助,也希望大家多多支持服務器之家。
原文鏈接:http://www.jianshu.com/p/db0d8d45c242?utm_source=tuicool&utm_medium=referral