spring mvc處理ios 請求頭不全時空參沒法解析的問題處理

時間 2019-11-07

標籤 spring mvc 處理 ios 請求不全時空沒法解析問題欄目 Spring 简体版

原文原文鏈接

ios前端比較懶~囧~~，還有已安裝的app用戶，不肯意更新等問題致使請求頭沒法補全給服務端springmvc發送過來。。。。。悲劇了html

只能服務端本身處理這個不全的http請求空參沒法解析的問題前端

嘗試處理方法java

1 增長springmvc過濾器對請求進行過濾（失敗）ios

測試發如今訪問控制層匹配請求地址以前就已經報錯，應該是dispatcher那裏出了問題web

雖然失敗，把代碼配置貼出來~~spring

applicationContext.xml數據庫

<mvc:interceptors>
       <mvc:interceptor>
           <mvc:mapping path="/**"/>
           <bean class="com.interceptor.ForIosParam"></bean>
       </mvc:interceptor>
   </mvc:interceptors>apache

ForIosParam.javajson

public class ForIosParam implements HandlerInterceptor {瀏覽器

@Override
   public boolean preHandle(HttpServletRequest request,
           HttpServletResponse response, Object handler) throws Exception {
       StringBuffer url=request.getRequestURL();
       Map requestParams=request.getParameterMap();
       Method method=requestParams.getClass().getMethod("setLocked",new Class[]{boolean.class});
       method.invoke(requestParams,new Object[]{new Boolean(false)});
       requestParams.put("ForIosParam", "ForIosParam");
       Map map1=request.getParameterMap();
       request.getRequestURL().append("?ForIosParam=ForIosParam");
       request.setAttribute("ForIosParam", "ForIosParam");
       StringBuffer url1=request.getRequestURL();
       return true;
   }

}

2 使用servlet在接收到請求以後發送再次本身給本身發送一個http完整的請求（失敗，爲毛請求發出去了，而後就沒有而後了一點反應也木有。。。。必須異步的嗎？無論那麼多了。。。換）這個網上搜就能夠java發送http post請求

3 使用 servlet利用post在接收到請求以後，增長參數再服務器跳轉forward到springmvc 的get方式接收的方法裏（失敗啊。。。。。每次都是servlet攔截到。。。。。悲催爲毛無論那麼多。。。。換）

代碼以下

package com.util;

import java.io.IOException;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
import java.util.UUID;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import net.sf.json.JSONObject;

import com.model.umaiw_app_system;
import com.service.GetInitKeyService;
import com.service.GetTheBestServerService;
import com.service.implement.GetInitKeyServiceImpl;
import com.service.implement.GetTheBestServerServiceImpl;
import com.test.HttpRequest;

public class getTheBestServerServlet extends HttpServlet{

   public void doPost (HttpServletRequest request, HttpServletResponse response)
           throws ServletException, IOException {
        response.setContentType("text/json; charset=gb2312");
       Map requestParams=request.getParameterMap();
           Method method;
           try {
               method = requestParams.getClass().getMethod("setLocked",new Class[]{boolean.class});
               method.invoke(requestParams,new Object[]{new Boolean(false)});
           } catch (NoSuchMethodException e) {
               e.printStackTrace();
           } catch (SecurityException e) {
               e.printStackTrace();
           } catch (IllegalAccessException e) {
               e.printStackTrace();
           } catch (IllegalArgumentException e) {
               e.printStackTrace();
           } catch (InvocationTargetException e) {
               e.printStackTrace();
           }
           requestParams.put("ForIosParam", "ForIosParam");
           Map map1=request.getParameterMap();
           request.getRequestURL().append("?ForIosParam=ForIosParam");
           request.setAttribute("ForIosParam", "ForIosParam");
       ServletContext sc = getServletContext();
       RequestDispatcher rd = null;
       rd = sc.getRequestDispatcher(request.getRequestURI()); //定向的頁面
       rd.forward(request, response);
       StringBuffer url=request.getRequestURL();
//       response.sendRedirect(url.toString());
   }

}

5 乾脆直接用servlet吧無參的http請求處理掉（成功啦~~ ）

不過這種方式由於是單獨走的servlet沒有走spring mvc和spring框架的支持（木有jdbcTemplate，木有自動注入，木有數據庫鏈接池~~~OMG 對付吧，無論三七二十一拼了，誰讓他不補全標準的http請求噠）

代碼以下（不能注入就實例化）

//阿里雲獲取真實ip,這個也讓人頭疼。。。。。
       String ip=request.getHeader("X-Forwarded-For");
       if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
           ip = request.getHeader("Proxy-Client-IP");
       }
       if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
           ip = request.getHeader("WL-Proxy-Client-IP");
       }
       if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
           ip = request.getRemoteAddr();
       }
       String initKey ="";
       umaiw_app_system uas = getInitKeyService.getinitKey(ip);
       if ( null== uas ) {
           String uuid = UUID.randomUUID().toString();
           initKey = uuid.substring(uuid.length()-8);

           String uuidkey = UUID.randomUUID().toString();
           String key = uuidkey.substring(uuidkey.length()-8);
           try {
               getTheBestServerService.insertKey(ip, initKey, new Date(),key);
           } catch (Exception e) {
               map.put("status", "1");
           }
       } else {
           initKey=uas.getInit_key();
       }


       try {
           map.put("serverIp", DesUtil.encrypt(
           "XX.XX.XX.XX"(可使負載均衡的ip),initKey));
       } catch (Exception e) {
           e.printStackTrace();
       }
       map.put("initKey", initKey);
       map.put("ip", ip);

       JSONObject jsonObject = JSONObject.fromObject(map);
       response.setContentType("text/html;charset=UTF-8");
       response.getWriter().write(jsonObject.toString());
   }
}

web.xml

<servlet>
    <servlet-name>getTheBestServerServlet</servlet-name>
    <servlet-class>com.util.getTheBestServerServlet</servlet-class>
</servlet>
<servlet-mapping>
    <servlet-name>getTheBestServerServlet</servlet-name>
    <url-pattern>/system/getTheBestServer</url-pattern>
</servlet-mapping>

數據庫訪問層用最基本的jdbc訪問（別忘了使用完鏈接關了它，，，，，）

附上阿里雲獲取真實ip的tomcat下

server.xml最後一行的配置