springboot跨域请求接口示例

一、项目架构

二、项目内容

1.GlobalCrosConfig.java

package com.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.CorsRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

@Configuration
public class GlobalCrosConfig {
    @Bean
    public WebMvcConfigurer corsConfigurer() {
        return new WebMvcConfigurer() {
            @Override
            //重写父类提供的跨域请求处理的接口
            public void addCorsMappings(CorsRegistry registry) {
                //添加映射路径
                registry.addMapping("/**")
                        //放行哪些原始域
                        .allowedOrigins("*")
                        //是否发送Cookie信息
                        .allowCredentials(true)
                        //放行哪些原始域(请求方式)
                        .allowedMethods("GET","POST", "PUT", "DELETE")
                        //放行哪些原始域(头部信息)
                        .allowedHeaders("*")
                        //暴露哪些头部信息（因为跨域访问默认不能获取全部头部信息）
                        .exposedHeaders("Header1", "Header2");
            }
        };
    }
}

2.CrossDomainController.java

package com.controller;

import java.text.SimpleDateFormat;
import java.util.Date;

import org.springframework.scheduling.annotation.EnableScheduling;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@EnableScheduling
@RequestMapping("/CrossDomainController")
public class CrossDomainController {
    private static final SimpleDateFormat dateFormat = new SimpleDateFormat("HH:mm:ss");

    @Scheduled(fixedRate = 5000)
    @RequestMapping(params="cors")
    public void crossDomain(){
         System.out.println("现在时间：" + dateFormat.format(new Date()));
    }
}

3.CrossStarter.java

package com;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;

@SpringBootApplication(exclude= {DataSourceAutoConfiguration.class})
public class CrossStarter {
    public static void main(String[] args) {
        SpringApplication.run(CrossStarter.class, args);
    }

}

4.pom.xml

<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/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>cross-domain</groupId>
  <artifactId>cross-domain</artifactId>
  <packaging>war</packaging>
  <version>0.0.1-SNAPSHOT</version>
  <name>cross-domain Maven Webapp</name>
  <url>http://maven.apache.org</url>
<!-- 父级项目 -->
  <parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.1.0.RELEASE</version>
    <relativePath /> <!-- lookup parent from repository -->
  </parent>
  <dependencies>
    <!-- 测试 -->
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-test</artifactId>
      <scope>test</scope>
    </dependency>
    <!-- springmvc -->
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <!-- jpa(持久层) -->
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-data-jpa</artifactId>
    </dependency>

    <!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api -->
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>javax.servlet-api</artifactId>
    </dependency>

    <!-- https://mvnrepository.com/artifact/org.codehaus.jackson/jackson-core-asl -->
    <dependency>
      <groupId>org.codehaus.jackson</groupId>
      <artifactId>jackson-core-asl</artifactId>
      <version>1.9.13</version>
    </dependency>

  </dependencies>
  <!-- 编译 -->
  <build>
    <!-- 插件 -->
    <plugins>
      <!-- maven插件 -->
      <plugin>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-maven-plugin</artifactId>
        <configuration>
          <source>1.8</source>
          <target>1.8</target>
          <encoding>UTF-8</encoding>
        </configuration>
      </plugin>
    </plugins>
  </build>
</project>

5.application.properties

server.port:8888