SpringBoot跨域请求处理方式
方法一、SpringBoot的注解@CrossOrigin(也支持SpringMVC)
简单粗暴的方式,Controller层在需要跨域的类或者方法上加上该注解即可
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| @RestController @CrossOrigin @RequestMapping("/situation") public class SituationController extends PublicUtilController { @Autowired private SituationService situationService; private static Logger LOGGER = Logger.getLogger(SituationController.class); }
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但每个Controller都得加,太麻烦了,怎么办呢,加在Controller公共父类(PublicUtilController)中,所有Controller继承即可。
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| @CrossOrigin public class PublicUtilController {
public PageInfoUtil proccedPageInfo(String currentPage, String pageSize) { PageInfoUtil pageInfoUtil = new PageInfoUtil(); try {
pageInfoUtil.setCurrentPage(Integer.valueOf(currentPage)); pageInfoUtil.setPageSize(Integer.valueOf(pageSize)); } catch (NumberFormatException e) { } return pageInfoUtil; } }
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当然,这里虽然指SpringBoot,SpringMVC也是同样的,但要求在Spring4.2及以上的版本。
另外,如果SpringMVC框架版本不方便修改,也可以通过修改tomcat的web.xml配置文件来处理
SpringMVC使用@CrossOrigin使用场景要求
方法二、处理跨域请求的Configuration
增加一个配置类,CrossOriginConfig.java。继承WebMvcConfigurerAdapter或者实现WebMvcConfigurer接口,其他都不用管,项目启动时,会自动读取配置。
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| import org.springframework.context.annotation.Configuration; import org.springframework.web.servlet.config.annotation.CorsRegistry; import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
@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); } }
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方法三、采用过滤器(filter)的方式
同方法二加配置类,增加一个CORSFilter 类,并实现Filter接口即可,其他都不用管,接口调用时,会过滤跨域的拦截。
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| @Component public class CORSFilter implements Filter {
@Override public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException { HttpServletResponse res = (HttpServletResponse) response; res.addHeader("Access-Control-Allow-Credentials", "true"); res.addHeader("Access-Control-Allow-Origin", "*"); res.addHeader("Access-Control-Allow-Methods", "GET, POST, DELETE, PUT"); res.addHeader("Access-Control-Allow-Headers", "Content-Type,X-CAF-Authorization-Token,sessionToken,X-TOKEN"); if (((HttpServletRequest) request).getMethod().equals("OPTIONS")) { response.getWriter().println("ok"); return; } chain.doFilter(request, response); } @Override public void destroy() { } @Override public void init(FilterConfig filterConfig) throws ServletException { } }
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方法四、采用nginx做动态代理