就在刚刚，朋友问我跨域怎么解决,正好前段时间刚做过,那我就来分享一下吧。

首先创建Httpfilter类，在 Controller 同级下创建

1.png

Httpfilter类代码：

package com.Verification.filter;

import java.io.IOException;

import javax.servlet.Filter;

import javax.servlet.FilterChain;

import javax.servlet.FilterConfig;

import javax.servlet.ServletException;

import javax.servlet.ServletRequest;

import javax.servlet.ServletResponse;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import org.apache.http.HttpStatus;

public class Httpfilter implements Filter {

@Override

public void destroy() {

// TODO 自动生成的方法存根

}

@Override

public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {

HttpServletResponse response = (HttpServletResponse) servletResponse;

HttpServletRequest request = (HttpServletRequest) servletRequest;

// 指定允许其他域名访问

response.setHeader("Access-Control-Allow-Origin", "*");

// 响应类型

response.setHeader("Access-Control-Allow-Methods", "POST, GET, DELETE, OPTIONS, DELETE");

// 响应头设置

response.setHeader("Access-Control-Allow-Headers", "Content-Type, x-requested-with, X-Custom-Header, HaiYi-Access-Token");

if ("OPTIONS".equals(request.getMethod())){

response.setStatus(HttpStatus.SC_NO_CONTENT);

}

filterChain.doFilter(servletRequest, servletResponse);

}

@Override

public void init(FilterConfig arg0) throws ServletException {

// TODO 自动生成的方法存根

}

}

然后：

2.png

xml添加：

httpfilter

com.Verification.filter.Httpfilter

httpfilter

/*

最后按ctrl然后鼠标点击xml里的com.Verification.filter.Httpfilter能进入这个页面就算成功。

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