java跨越解决

1.配置文件解决跨域

使用Filter方式进行设置

@Slf4j
@Component
public class CorsFilter implements Filter {

    @Override
    public void init(FilterConfig filterConfig) throws ServletException {
    }
    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
            throws IOException, ServletException {
        HttpServletResponse httpResponse = (HttpServletResponse) response;
        HttpServletRequest httpRequest = (HttpServletRequest) request;
        httpResponse.setHeader("Access-Control-Allow-Origin", httpRequest.getHeader(HttpHeaders.ORIGIN));
        httpResponse.setHeader("Access-Control-Allow-Methods", "GET, HEAD, POST, PUT, DELETE, TRACE, OPTIONS, PATCH");
        httpResponse.setHeader("Access-Control-Max-Age", "3600");
        httpResponse.setHeader("Access-Control-Allow-Headers",
                "*, Authorization, Origin, User-Agent, Referer, Accept, Content-type, languageType, Cache-Control, Pragma, Expires");
        chain.doFilter(request, response);
    }
    @Override
    public void destroy() {
    }
}

2.使用注解解决接口跨域

使用 @CrossOrgin 注解

@CrossOrigin可以使用在类上面，也可以使用在接口上面

@CrossOrigin
@PatchMapping("/v1/{id}")
public Response update(@RequestBody @Valid Request<ReqVO> reqVORequest, @PathVariable Long id,
			HttpServletRequest httpServletRequest) {
}

3. Nginx配置解决跨域

  #跨域配置
   # add_header 'Access-Control-Allow-Origin' '*'; #允许来自所有的访问地址
   # add_header 'Access-Control-Allow-Credentials' 'true';
   # add_header 'Access-Control-Allow-Methods' 'GET, PUT, POST, DELETE, OPTIONS'; #支持请求方式
   # add_header 'Access-Control-Allow-Headers' 'Content-Type,Access-Control-Allow-Headers,Authorization,X-Requested-With';