起源已被CORS策略阻止Spring引导和React [英] origin has been blocked by CORS policy Spring boot and React

问题描述

这是一个返回所有区域对象的控制器

在' http：// localhost：8080 / 处从原始地址' http：// localhost：3000 '已被CORS策略阻止：上没有 Access-Control-Allow-Origin标头

Access to XMLHttpRequest at 'http://localhost:8080/ from origin 'http://localhost:3000' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.

package com.ministry.demo.controller;

import com.ministry.demo.model.District;
import com.ministry.demo.repository.DistrictRepository;
import com.ministry.demo.service.DistrictService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.List;

@RestController
@RequestMapping(path = "district")
public class DistrictController {
    @Autowired
    DistrictService service;

    @GetMapping(path = "getAll")
    List<District> getAllDistrict(){
        return service.getAllDistricts();
    }
}

推荐答案

我找到了答案

package com.ministry.demo.controller;

import java.util.List;

@RestController
@CrossOrigin
@RequestMapping(path = "district")
public class DistrictController {
    @Autowired
    DistrictService service;

    @GetMapping(path = "getAll")
    List<District> getAllDistrict(){
        return service.getAllDistricts();
    }
}

这篇关于起源已被CORS策略阻止Spring引导和React的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！