SpringMVC 解决跨域和乱码问题

今天再作接口对接的时候,忽然遇到了这个问题:

      我在Postman 中测试正常的接口,在前端那边忽然出现了403跨域的问题,所以我在白度中找了好几种方法,其中比较简单有用的,解决了问题是以下方法: 

1; 新建类:

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.HttpServletResponse;

/**
 *@description  TODO 跨域解决类
 *@author  geYang
 **/
public class SimpleCORSFilter implements Filter{

    @Override
    public void init(FilterConfig filterConfig) throws ServletException {
        // TODO Auto-generated method stub
        
    }
    
    /**
     *  请求头注释:
     *  0: response.setCharacterEncoding("UTF-8"); 设置响应参数为UTF-8
     *  1: Access-Control-Allow-Origin 能够请求的域; *为容许全部域请求
     *  2: Access-Control-Allow-Methods 请求方式
     *  3: Access-Control-Max-Age  请求数据缓存时间(单位秒)
     *  4: Access-Control-Allow-Credentials 保持跨域 AJAX时的 Cookie
     *  5: Access-Control-Allow-Headers 请求头:
     *      (1): X-Requested-With 请求头用于在服务器端判断request来自AJAX请求仍是传统请求;
     **/
    @Override
    public void doFilter(ServletRequest req, ServletResponse resp, FilterChain chain)
            throws IOException, ServletException {
        // TODO 解决跨域错误
        HttpServletResponse response = (HttpServletResponse) resp;
        response.setCharacterEncoding("UTF-8");
        response.setHeader("Access-Control-Allow-Credentials", "true");
        response.setHeader("Access-Control-Allow-Headers", "X-Requested-With");
        response.setHeader("Access-Control-Allow-Methods", "POST, GET, OPTIONS, DELETE");
        response.setHeader("Access-Control-Allow-Origin", "*");
        response.setHeader("Access-Control-Max-Age", "600");
        chain.doFilter(req, resp);
    }

    @Override
    public void destroy() {
        // TODO Auto-generated method stub
        
    }

    
    
}

2: 在 web.xml 中进行配置:

<!-- 
		org.springframework.web.filter.CharacterEncodingFilter
	 -->
	<filter>
		<filter-name>SetCharacterEncoding</filter-name>
		<filter-class>
			com.xt.shop.base.interceptor.SimpleCORSFilter
		</filter-class>
		<init-param>
			<param-name>encoding</param-name>
			<param-value>UTF-8</param-value>
		</init-param>
		<init-param>
			<param-name>forceEncoding</param-name>
			<param-value>true</param-value>
		</init-param>
	</filter>
	<filter-mapping>
        <filter-name>SetCharacterEncoding</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>

这样跨域问题就解决了, 但 Controller 层中接收参数出现了中文乱码状况;

解决方法为: 在拦截器中加入:

        //设置接收编码为UTF-8
        request.setCharacterEncoding("UTF-8");

这句代码就能够啦...