微服務網關---調用其他微服務

 

首先寫一個過濾器繼承ZuulFilter ，然后重寫其中的run（）方法，

1、獲取request對象的信息：

RequestContext ctx = RequestContext.getCurrentContext();
HttpServletRequest request = ctx.getRequest();
String servletPath = request.getServletPath();
拿到request對象之后就能獲得請求的信息：

String accessSys = request.getParameter("accessSys");
String paramData = getRequestBody(request);

private String getRequestBody(HttpServletRequest request) {
   try {
      InputStream v_inputstream = request.getInputStream();
      ByteArrayOutputStream baos = new ByteArrayOutputStream();
      int x = 0;
      while ((x = v_inputstream.read()) != -1) {
         baos.write(x);
      }
      baos.flush();
      return new String(baos.toByteArray(), UTF_8);
   } catch (Exception e) {
      logger.error(e.getMessage(), e);
   }
   return "";
}

　2、遍歷routes路由信息   路由的配置信息如下：

@ConfigurationProperties(prefix="application.myroutes")
public class MyRoutesConfig {

	
	private Map<String, String> routes;

	public Map<String, String> getRoutes() {
		return routes;
	}

	public void setRoutes(Map<String, String> routes) {
		this.routes = routes;
	}
}

配置文件的信息如下：

#自定義過濾器 路由，參考：RestFaceFilter.java
application:
   myroutes: 
     routes: {
     service: 'bbbbbb',
     proxyservice: 'bbbbbbb'
   }

 if (routes != null) {
            Set<String> keySet = routes.getRoutes().keySet();
            for (String str : keySet) {
//                logger.info("get route key: {}", str);
                if (servletPath.startsWith("/" + str + "/")) {
                    restface_forward = routes.getRoutes().get(str);
                    break;
                }
            }
        }