基于SpringBoot+vue的token验证

后端：

1，写一个验证token的拦截器

import com.fasterxml.jackson.databind.ObjectMapper;
import com.ffyc.news.model.CommonData;
import org.springframework.web.servlet.HandlerInterceptor;
 
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.PrintWriter;
 
public class AdminTokenInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        String adminToken= request.getHeader("adminToken");
        boolean ans=JWTUtil.verify(adminToken);
        if(!ans){
            PrintWriter printWriter=response.getWriter();
            CommonData commonData=new CommonData(402,"Token验证失效，请重新登录！");
            String json=new ObjectMapper().writeValueAsString(commonData);
            printWriter.write(json);
            printWriter.close();
        }
        return ans;
    }
}

2，配置拦截器

import com.ffyc.news.util.AdminTokenInterceptor;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.InterceptorRegistration;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
@Configuration
public class WebConfig implements WebMvcConfigurer {
    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        InterceptorRegistration interceptorRegistration=registry.addInterceptor(new AdminTokenInterceptor());
        interceptorRegistration.addPathPatterns("/admin/**");
        interceptorRegistration.excludePathPatterns("/admin/login/login");
    }
 
//    @Override
//    public void addResourceHandlers(ResourceHandlerRegistry registry) {
//
//    }
}

前端：

1，axios响应拦截

//axios 请求拦截 每次向后端发送
axios.interceptors.request.use(config => {
	//为请求头对象，添加 Token 验证的 token 字段
	config.headers.adminToken = window.sessionStorage.getItem('adminToken');
	return config;
})
axios.interceptors.response.use((resp) => { //正常响应拦截
	if (resp.data.code == 500) {
		ElementUI.Message({
			message: resp.data.message,
			type: "error"
		})
	}
	if (resp.data.code == 402) {
		ElementUI.Message({
			message: resp.data.message,
			type: "error"
		})
		router.replace("/login");
	}
	return resp;
});