方案一
addMapping：配置可以被跨域的路径，可以任意配置，可以具体到直接请求路径。
allowedMethods：允许所有的请求方法访问该跨域资源服务器，如：POST、GET、PUT、DELETE等。
allowedOrigins：允许所有的请求域名访问我们的跨域资源，可以固定单条或者多条内容，如："http://www.baidu.com"，只有百度可以访问我们的跨域资源。
allowedHeaders：允许所有的请求header访问，可以自定义设置任意请求头信息，如："X-YAUTH-TOKEN"
@Configuration
public class CorsConfig extends WebMvcConfigurerAdapter {
static final String ORIGINS[] = new String[] { "GET", "POST", "PUT", "DELETE" };
@Override
public void addCorsMappings(CorsRegistry registry) {
registry.addMapping("/**").allowedOrigins("*").allowCredentials(true).allowedMethods(ORIGINS)
.maxAge(3600);
}
}
2、HTTP请求接口
@RestController
public class HelloController {
@Autowired
HelloService helloService;
@GetMapping(value = "/test", produces = MediaType.APPLICATION_JSON_UTF8_VALUE)
public String query() {
return "hello";
}
}
方案二
public class ManagementApplication {
private CorsConfiguration buildConfig() {
CorsConfiguration corsConfiguration = new CorsConfiguration();
corsConfiguration.addAllowedOrigin("*");
corsConfiguration.addAllowedHeader("*");
corsConfiguration.addAllowedMethod("*");
//corsConfiguration.addExposedHeader(HttpHeaderConStant.X_TOTAL_COUNT);
return corsConfiguration;
}
/**
* 跨域过滤器
*
* @return
*/
@Bean
public CorsFilter corsFilter() {
UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
source.registerCorsConfiguration("/**", buildConfig());
return new CorsFilter(source);
}
}
跨域的html
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>跨域请求</title>
<script src="https://cdn.bootcss.com/jquery/1.10.2/jquery.min.js">
</script>
<script>
$(document).ready(function(){
$("button").click(function(){
$.ajax({url:"http://localhost:8080/test",success:function(result){
$("#p1").html(result);
}});
});
});
</script>
</head>
<body>
<p width="500px" height="100px" id="p1"></p>
<button>获取其他内容</button>
</body>
</html>
跨域的Filter
@Component
public class OriginFilter implements Filter {
@Override
public void init(FilterConfig filterConfig) throws ServletException {
}
@Override
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,PUT");
response.setHeader("Access-Control-Max-Age", "3600");
response.setHeader("Access-Control-Allow-Headers", "x-requested-with");
chain.doFilter(req, res);
}
@Override
public void destroy() {
// TODO Auto-generated method stub
}
}
// 或者
import java.io.IOException;
import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.stereotype.Component;
import org.springframework.web.filter.OncePerRequestFilter;
@Component
public class CorsFilter extends OncePerRequestFilter {
@Override
protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain)
throws ServletException, IOException {
response.setHeader("Access-Control-Allow-Origin", "*");
response.setHeader("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE,OPTIONS");
response.setHeader("Access-Control-Allow-Headers", "Content-Type");
response.setHeader("Access-Control-Max-Age", "1800");// 30 min
filterChain.doFilter(request, response);
}
}
//XML配置
<filter>
<filter-name>cros</filter-name>
<filter-class>xxxx.filter.CorsFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>cros</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
Nginx跨域
其中：add_header 'Access-Control-Expose-Headers' 务必加上你请求时所带的header。例如本例中的“Token”，其实是前端传给后端过来的。如果记不得也没有关系，浏览器的调试器会有详细说明。
location / {
proxy_pass http://localhost:8080;
if ($request_method = 'OPTIONS') {
add_header 'Access-Control-Allow-Origin' '*';
add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Content-Range,Range,Token';
add_header 'Access-Control-Max-Age' 1728000;
add_header 'Content-Type' 'text/plain; charset=utf-8';
add_header 'Content-Length' 0;
return 204;
}
if ($request_method = 'POST') {
add_header 'Access-Control-Allow-Origin' '*';
add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Content-Range,Range,Token';
add_header 'Access-Control-Expose-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Content-Range,Range,Token';
}
if ($request_method = 'GET') {
add_header 'Access-Control-Allow-Origin' '*';
add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
add_header 'Access-Control-Allow-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Content-Range,Range,Token';
add_header 'Access-Control-Expose-Headers' 'DNT,X-CustomHeader,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Content-Range,Range,Token';
}
}