由於業務需求,存在兩套項目,一套是路由中心,一套是業務系統.
現在存在問題是,路由中心集成了微信公眾號與小程式模組功能,業務系統部署了多套服務.
現在需要透過呼叫路由中心將介面重新路由到指定的業務系統中
將小程式,公眾號用戶資訊與業務系統做綁定
將路由中心的介面與業務系統的介面判斷出來
透過用戶資訊找到的業務系統服務,分發到對應的業務系統中
處理步驟
業務系統存在手機號碼,如果用戶註冊將手機號碼傳送給路由中心記錄
#1.取得路由中心系統中介面對應
private static List<String> URLS = new ArrayList<>();
@Resource
private WebApplicationContext applicationContext;
@Override
public void init(FilterConfig filterConfig) throws ServletException {
applicationContext
.getBean(RequestMappingHandlerMapping.class)
.getHandlerMethods()
.forEach((k, v) -> { k.getPatternsCondition().getPatterns().stream().forEach(s-> URLS.add(s)); });
log.info("过滤器初始化");
}2.取得請求介面路徑
HttpServletRequest request = (HttpServletRequest) servletRequest;
HttpServletResponse response = (HttpServletResponse) servletResponse;
String requestName = request.getRequestURI();3.判斷是否為路由中心的介面
if (URLS.contains(requestName)) {
//系统接口
chain.doFilter(servletRequest, servletResponse);
} else {
//业务系统接口 需要代理
// 代理请求
ResponseEntity<String> redirect = routerService.redirect(request, response, "xxx", "xxx");
//设置将字符以"UTF-8"编码输出到客户端浏览器
response.setCharacterEncoding("UTF-8");
//通过设置响应头控制浏览器以UTF-8的编码显示数据，如果不加这句话，那么浏览器显示的将是乱码
response.setHeader("content-type", "application/json; charset=utf-8");
response.getWriter().write(redirect.getBody());
}import com.jyw.router.miniapp.service.IRouterService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.ResponseEntity;
import org.springframework.web.context.WebApplicationContext;
import org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping;
import javax.annotation.Resource;
import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
/**
* @author 沈峻
* @ClassName RouterFilter
* @Description TODO
* @Date 2023/4/20 12:23
**/
@Configuration
@WebFilter(urlPatterns = "/*", filterName = "Router")
@Slf4j
public class RouterFilter implements Filter {
private static List<String> URLS = new ArrayList<>();
@Resource
private WebApplicationContext applicationContext;
@Resource
private IRouterService routerService;
@Override
public void init(FilterConfig filterConfig) throws ServletException {
applicationContext.getBean(RequestMappingHandlerMapping.class).getHandlerMethods().forEach((k, v) -> { k.getPatternsCondition().getPatterns().stream().forEach(s-> URLS.add(s)); });
log.info("过滤器初始化");
}
@Override
public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain chain) throws IOException, ServletException {
HttpServletRequest request = (HttpServletRequest) servletRequest;
HttpServletResponse response = (HttpServletResponse) servletResponse;
String requestName = request.getRequestURI();
/*顺手解决跨域问题*/
response.setHeader("Access-Control-Allow-Origin", "*");
response.setHeader("Access-Control-Allow-Methods", "POST, GET, OPTIONS, DELETE");
response.setHeader("Access-Control-Max-Age", "3600");
response.setHeader("Access-Control-Allow-Headers", "x-requested-with");
log.info(requestName);
if (URLS.contains(requestName)) {
chain.doFilter(servletRequest, servletResponse);
} else {
// 代理请求
ResponseEntity<String> redirect = routerService.redirect(request, response, "http://192.168.2.18/api", "/router");
//设置将字符以"UTF-8"编码输出到客户端浏览器
response.setCharacterEncoding("UTF-8");
//通过设置响应头控制浏览器以UTF-8的编码显示数据，如果不加这句话，那么浏览器显示的将是乱码
response.setHeader("content-type", "application/json; charset=utf-8");
response.getWriter().write(redirect.getBody());
}
log.info("--------------------------------------------------------");
}
@Override
public void destroy() {
Filter.super.destroy();
}以上是SpringBoot過濾器怎麼實現專案內介面過濾的詳細內容。更多資訊請關注PHP中文網其他相關文章！
