Spring Boot实现跨域访问实现代码

当前使用spring版本是4.3.9

import org.springframework.stereotype.component;
import javax.servlet.*;
import javax.servlet.http.httpservletrequest;
import javax.servlet.http.httpservletresponse;
import java.io.ioexception;
@component
public class corsfilter implements filter {
  @override
  public void init(filterconfig filterconfig) throws servletexception {
  }
  @override
  public void dofilter(servletrequest servletrequest,
             servletresponse servletresponse,
             filterchain filterchain) throws ioexception, servletexception {
    httpservletrequest request = (httpservletrequest) servletrequest;
    httpservletresponse response = (httpservletresponse) servletresponse;
    response.setheader("access-control-allow-origin", request.getheader("origin"));
//    response.setheader("access-control-allow-origin", "*");//允许跨域访问的域
    response.setheader("access-control-allow-methods", "post, get, options, delete");//允许使用的请求方法，以逗号隔开
    response.setheader("access-control-max-age", "3600");// 缓存此次请求的秒数
    //允许使用的请求方法，以逗号隔开
    response.setheader("access-control-allow-headers", "x-requested-with,cache-control,pragma,content-type,token");
    response.setheader("access-control-allow-credentials","true");//是否允许请求带有验证信息
    filterchain.dofilter(servletrequest, servletresponse);
  }
  @override
  public void destroy() {
  }
}

ps： spring boot 服务器端设置允许跨域访问

 import org.springframework.stereotype.component; 
import javax.servlet.*; 
import javax.servlet.http.httpservletresponse; 
import java.io.ioexception; 
/** 
 * 
 * 跨域过滤器 
 * @author meng 
 * @version 
 * @since 2016年6月19日 
 */ 
@component 
public class corsfilter implements filter { 
  final static org.slf4j.logger logger = org.slf4j.loggerfactory.getlogger(corsfilter.class); 
  public void dofilter(servletrequest req, servletresponse res, filterchain chain) throws ioexception, servletexception { 
    httpservletresponse response = (httpservletresponse) res; 
    response.setheader("access-control-allow-origin", "*"); 
    response.setheader("access-control-allow-methods", "post, get, options, delete"); 
    response.setheader("access-control-max-age", "3600"); 
    response.setheader("access-control-allow-headers", "x-requested-with"); 
    system.out.println("*********************************过滤器被使用**************************"); 
    chain.dofilter(req, res); 
  } 
  public void init(filterconfig filterconfig) {} 
  public void destroy() {} 
} 

2017-04-13更新：

第二种方法，在appplication.java添加：

private corsconfiguration buildconfig() { 
    corsconfiguration corsconfiguration = new corsconfiguration(); 
    corsconfiguration.addallowedorigin("*"); 
    corsconfiguration.addallowedheader("*"); 
    corsconfiguration.addallowedmethod("*"); 
    return corsconfiguration; 
  } 
  /** 
   * 跨域过滤器 
   * @return 
   */ 
  @bean 
  public corsfilter corsfilter() { 
    urlbasedcorsconfigurationsource source = new urlbasedcorsconfigurationsource(); 
    source.registercorsconfiguration("/**", buildconfig()); // 4 
    return new corsfilter(source); 
  } 

总结

以上所述是小编给大家介绍的spring boot实现跨域访问实现代码，希望对大家有所帮助