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這篇文章主要介紹了Springboot引入攔截器并放行swagger代碼實(shí)例,文中通過示例代碼介紹的非常詳細(xì),對(duì)大家的學(xué)習(xí)或者工作具有一定的參考學(xué)習(xí)價(jià)值,需要的朋友可以參考下
Springboot引入攔截器
自定義的攔截器類 Interceptor
package cn.zytao.taosir.auth.config; import javax.annotation.Resource; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.springframework.web.servlet.HandlerInterceptor; import org.springframework.web.servlet.ModelAndView; public class AuthInterceptor implements HandlerInterceptor{ /** * 請(qǐng)求處理之后 */ @Override public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception { // TODO Auto-generated method stub HandlerInterceptor.super.afterCompletion(request, response, handler, ex); } /** * 請(qǐng)求處理之后調(diào)用 */ @Override public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception { // TODO Auto-generated method stub HandlerInterceptor.super.postHandle(request, response, handler, modelAndView); } /** * 請(qǐng)求處理之前 */ @Override public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception { return HandlerInterceptor.super.preHandle(request, response, handler); } }
將攔截器添加到springmvc配置中,并放行swagger的相關(guān)資源
package cn.zytao.taosir.auth.config; 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.ResourceHandlerRegistry; import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport; @Configuration public class SpringMVCConfig extends WebMvcConfigurationSupport{ @Bean public AuthInterceptor getAuthInterceptor() { return new AuthInterceptor(); } @Override public void addInterceptors(InterceptorRegistry registry) { registry .addInterceptor(getAuthInterceptor()) .addPathPatterns("/**") .excludePathPatterns("/login") .excludePathPatterns("/swagger-resources/**", "/webjars/**", "/v2/**", "/swagger-ui.html/**"); super.addInterceptors(registry); } @Override protected void addResourceHandlers(ResourceHandlerRegistry registry) { registry.addResourceHandler("swagger-ui.html") .addResourceLocations("classpath:/META-INF/resources/"); registry.addResourceHandler("/webjars/**") .addResourceLocations("classpath:/META-INF/resources/webjars/"); super.addResourceHandlers(registry); } }
在addInterceptors方法中添加攔截器時(shí),是new的一個(gè)攔截器。而并不是引入springBean容器初始化時(shí),已經(jīng)初始化好了的bean實(shí)例,并不是同一個(gè)對(duì)象,故而訪問時(shí)肯定是無(wú)法引入Interceptor類里面引入的bean實(shí)例,可能產(chǎn)生空指針異常。
即無(wú)法引入默認(rèn)注入的Bean,那么我們就自己定義一個(gè)Bean,然后在攔截器添加方法內(nèi)引入這個(gè)bean即可,上面主要對(duì)此進(jìn)行了處理。
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億速云。
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