CORS Origin FAILED Spring Boot

我需要你，因为@CROSSOrigin不起作用，我不明白为什么，你这里有我的代码。事实上，我使用 WebService，但我对"控制允许起源"有问题，我尝试了所有方法，但没有任何效果，请帮助我！

带有2.1.2版本的SPRING BOOT项目，我想为ANGULAR 7构建一个REST API

问题：

zone.js:3243 GET http://localhost:8080/apiEquipment/equipments 404
localhost/:1 Access to XMLHttpRequest at 'http://localhost:8080/apiEquipment/equipments' from origin 'http://localhost:4200' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
zone.js:3243 XHR failed loading: GET "http://localhost:8080/apiEquipment/equipments".
core.js:15714 ERROR 
HttpErrorResponse {headers: HttpHeaders, status: 0, statusText: "Unknown Error", url: "http://localhost:8080/apiEquipment/equipments", ok: false, …}

绒球.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
	<modelVersion>4.0.0</modelVersion>
	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>2.1.2.RELEASE</version>
		<relativePath/> <!-- lookup parent from repository -->
	</parent>
	<groupId>com.example</groupId>
	<artifactId>GoSecuriServices</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<name>GoSecuriServices</name>
	<description>Rest API for GoSecuri Application</description>
	<properties>
		<java.version>1.8</java.version>
	</properties>
	<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-data-jpa</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-data-rest</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web-services</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-devtools</artifactId>
			<scope>runtime</scope>
		</dependency>
		<dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
			<scope>runtime</scope>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
		</dependency>
	</dependencies>
	<build>
		<plugins>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
			</plugin>
		</plugins>
	</build>
</project>

应用.java

package com.example.GoSecuriServices;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.domain.EntityScan;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
@EnableJpaRepositories("com.example.GoSecuriServices.repository") 
@EntityScan("com.example.GoSecuriServices.model")
@ComponentScan
@SpringBootApplication
public class GoSecuriServicesApplication {
	public static void main(String[] args) {
		SpringApplication.run(GoSecuriServicesApplication.class, args);
	}
	
}

设备.java（我的桌子）

package model;
import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
import org.springframework.data.jpa.domain.support.AuditingEntityListener;
import javax.persistence.*;
import javax.validation.constraints.NotBlank;
@Entity
@Table(name = "Equipment")
@EntityListeners(AuditingEntityListener.class)
@JsonIgnoreProperties(value = {"createdAt", "updatedAt"}, allowGetters = true)
public class Equipment {
	
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long Equipment_id;
    @NotBlank
    private String EquipmentName;
    @NotBlank
    private Integer Nb;
    // Getters and Setters
    public Long getEquipment_id() {
    	return this.Equipment_id;
    }
    
    public void SetEquipment_id(Long id) {
    	this.Equipment_id = id;
    }
    
    
    public String getEquipmentName() {
    	return this.EquipmentName;
    }
    
    public void setEquipmentName(String name) {
    	this.EquipmentName = name;
    }
    
    
    public Integer getNb() {
    	return this.Nb;
    }
    
    public void setNb(Integer nb) {
    	this.Nb = nb;
    }
    
}

设备存储库.java

package repository;
import model.Equipment;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.stereotype.Repository;
@Repository
public interface EquipmentRepository extends JpaRepository<Equipment, Long> {
}

设备控制器.java

package controller;
import exception.ResourceNotFoundException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import model.Equipment;
import repository.EquipmentRepository;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;
import javax.servlet.http.HttpServletResponse;
import javax.validation.Valid;
import java.util.List;
@RestController
@CrossOrigin(origins = "*", allowedHeaders = "*", maxAge = 3600)
@RequestMapping("/apiEquipment")
public class EquipmentController {
	
	@Autowired
    EquipmentRepository equipmentRepository;
	
	@RequestMapping(value= "/apiEquipment/**", method=RequestMethod.OPTIONS)
	public void corsHeaders(HttpServletResponse response) {
	    response.addHeader("Access-Control-Allow-Origin", "*");
	    response.addHeader("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE, OPTIONS");
	    response.addHeader("Access-Control-Allow-Headers", "origin, content-type, accept, x-requested-with");
	    response.addHeader("Access-Control-Max-Age", "3600");
	}
	
	// Get all equipments
	@GetMapping("/equipments")
	public List<Equipment> getAllEquipments() {
		return equipmentRepository.findAll();
	}
	
	
	// Create new equipment
	@PostMapping("/equipments")
	public Equipment createEquipment(@Valid @RequestBody Equipment equipment) {
		return equipmentRepository.save(equipment);
	}
	
	// Get a single equipment
	@GetMapping("/equipments/{id}")
	public Equipment getEquipmentById(@PathVariable(value = "id") Long equipmentId) {
		return equipmentRepository.findById(equipmentId)
			.orElseThrow(() -> new ResourceNotFoundException("Equipment", "id", equipmentId));
	}
	
	// Update a Equipment
	@PutMapping("/equipments/{id}")
	public Equipment updateNote(@PathVariable(value = "id") Long equipmentId,
	                                        @Valid @RequestBody Equipment equipmentDetails) {
	    Equipment equipment = equipmentRepository.findById(equipmentId)
	            .orElseThrow(() -> new ResourceNotFoundException("Equipment", "id", equipmentId));
	    equipment.setEquipmentName(equipmentDetails.getEquipmentName());
	    equipment.setNb(equipmentDetails.getNb());
	    Equipment updatedEquipment = equipmentRepository.save(equipment);
	    return updatedEquipment;
	}
	
	// Delete a Equipment
	@DeleteMapping("/equipments/{id}")
	public ResponseEntity<?> deleteEquipment(@PathVariable(value = "id") Long equipmentId) {
		Equipment equipment = equipmentRepository.findById(equipmentId)
				.orElseThrow(() -> new ResourceNotFoundException("Equipment", "id", equipmentId));
		
		equipmentRepository.delete(equipment);
		
		return ResponseEntity.ok().build();
	}
	
}

您是否阅读了 Spring 文档中的 CORS 支持部分？

您也可以尝试使用Spring 高阶组件和@EnableCORS，或者如果您不想使用其他依赖项，请使用此处@Bean

您需要按如下方式配置 Web 跨域配置：

package com.liukai.routermanagement.config;
import com.liukai.routermanagement.interceptor.LoginHandlerInterceptor;
import org.springframework.boot.SpringBootConfiguration;
import org.springframework.web.servlet.config.annotation.CorsRegistry;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;
@SpringBootConfiguration
public class MyWebMvcConfig extends WebMvcConfigurationSupport {
    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(new LoginHandlerInterceptor()).addPathPatterns("/**").excludePathPatterns("/user/login","/router/login","/user/registered");
        super.addInterceptors(registry);
    }
// this main mothod，Just add this method
    @Override
    protected void addCorsMappings(CorsRegistry registry) {
        registry.addMapping("/**").allowedOrigins("*").allowCredentials(true).allowedMethods("GET","POST","PUT","DELETE");
        super.addCorsMappings(registry);
    }
}

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