import java.util.List;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;
/**
* 请求拦截器,处理跨域问题
*
*/
@Component
public class CommonInterceptor implements HandlerInterceptor {
private List<String> excludedUrls;
public List<String> getExcludedUrls() {
return excludedUrls;
}
public void setExcludedUrls(List<String> excludedUrls) {
this.excludedUrls = excludedUrls;
}
/**
*
* 在业务处理器处理请求之前被调用 如果返回false
* 从当前的拦截器往回执行所有拦截器的afterCompletion(),
* 再退出拦截器链, 如果返回true 执行下一个拦截器,
* 直到所有的拦截器都执行完毕 再执行被拦截的Controller
* 然后进入拦截器链,
* 从最后一个拦截器往回执行所有的postHandle()
* 接着再从最后一个拦截器往回执行所有的afterCompletion()
*
* @param request
*
* @param response
*/
public boolean preHandle(HttpServletRequest request, HttpServletResponse response,
Object handler) throws Exception {
response.setHeader("Access-Control-Allow-Origin", "*");
response.setHeader("Access-Control-Allow-Methods", "*");
response.setHeader("Access-Control-Max-Age", "3600");
response.setHeader("Access-Control-Allow-Headers",
"Origin, X-Requested-With, Content-Type, Accept");
return true;
}
// 在业务处理器处理请求执行完成后,生成视图之前执行的动作
public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler,
ModelAndView modelAndView) throws Exception {
}
/**
*
* 在DispatcherServlet完全处理完请求后被调用
* 当有拦截器抛出异常时,
* 会从当前拦截器往回执行所有的拦截器的afterCompletion()
*
* @param request
*
* @param response
*
* @param handler
*
*/
public void afterCompletion(HttpServletRequest request, HttpServletResponse response,
Object handler, Exception ex) throws Exception {
}
}
下面是第二个类主要作用是找到上面配置的拦截器
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.SpringBootConfiguration;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
/**
* 找到配置的拦截器 配置东西等
* @author ASUS-
*
*/
@SpringBootConfiguration
public class MySpringMVCConfig extends WebMvcConfigurerAdapter {
@Autowired
private CommonInterceptor commonInterceptor;
@Override
public void addInterceptors(InterceptorRegistry registry) {
// TODO Auto-generated method stub
registry.addInterceptor(commonInterceptor).addPathPatterns("/**");
// super.addInterceptors(registry);
// registry.addInterceptor(commonInterceptor).addPathPatterns("/**").excludePathPatterns("/login",
// "/register");
}
/*
* @Override public void addInterceptors(InterceptorRegistry registry){
* registry.addInterceptor(userConfig).add }
*/
}
到这里springboot解决跨域请求的拦截器就配置好了