《springboot》springboot之后端跨域设置

最新推荐文章于 2023-06-22 19:39:35 发布

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最新推荐文章于 2023-06-22 19:39:35 发布

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分类专栏： java springboot

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本文介绍了一种通过配置Spring MVC拦截器实现跨域资源共享(CORS)的方法。具体包括编写自定义拦截器类`CorsInterceptor`来设置跨域请求头，并在`WebMvcConfig`中注册该拦截器以全局应用。

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1.首先配置拦截器

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;


public class CorsInterceptor implements HandlerInterceptor {
 
    @Override
    public boolean preHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o) throws Exception {
 
    	String origin=httpServletRequest.getHeader("Origin");
    	
        httpServletResponse.setHeader("Access-Control-Allow-Origin", origin);
 
        httpServletResponse.setHeader("Access-Control-Allow-Headers", "Content-Type,Content-Length, Authorization, Accept,X-Requested-With");
 
        httpServletResponse.setHeader("Access-Control-Allow-Methods","PUT,POST,GET,DELETE,OPTIONS");
        
        httpServletResponse.setHeader("Access-Control-Allow-Credentials", "true");
        
        httpServletResponse.setHeader("Access-Control-Max-Age", "3600");
 
        return true;
    }
 
    @Override
    public void postHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, ModelAndView modelAndView) throws Exception {
 
    }
 
    @Override
    public void afterCompletion(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, Exception e) throws Exception {
 
    }
}

2. 注册拦截器

import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;


/**
 * 
 * @author guokaige
 *
 */
@Configuration
public class WebMvcConfig extends WebMvcConfigurerAdapter {


    /**
     * 注册拦截器
     */
    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        // 多个拦截器组成一个拦截器链
        // addPathPatterns 用于添加拦截规则
        // excludePathPatterns 用户排除拦截
    	registry.addInterceptor(new CorsInterceptor()).addPathPatterns("/**");
        registry.addInterceptor(new DataInterceptor()).addPathPatterns("/**");
        super.addInterceptors(registry);
    }


}