From 9fb7427a27566a61aa70a44014b72c052d459ae8 Mon Sep 17 00:00:00 2001
From: p97balmkq <1348817836@qq.com>
Date: Fri, 5 Jul 2024 16:00:42 +0800
Subject: [PATCH] ADD file via upload

---
 BaseController.java | 255 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 255 insertions(+)
 create mode 100644 BaseController.java

diff --git a/BaseController.java b/BaseController.java
new file mode 100644
index 0000000..1808362
--- /dev/null
+++ b/BaseController.java
@@ -0,0 +1,255 @@
+package com.spring.controller;
+
+
+
+import com.alibaba.fastjson.JSON;
+import com.spring.util.JsonResult;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.servlet.ModelAndView;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import javax.servlet.http.HttpSession;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.util.Enumeration;
+import java.util.LinkedHashMap;
+import java.util.Map;
+
+/**
+ * 控制器基类
+ */
+abstract public class BaseController {
+    @Autowired
+    protected HttpServletRequest request; // 注入
+    @Autowired
+    protected HttpServletResponse response; // 注入
+    @Autowired
+    protected HttpSession session; // 注入
+
+    protected ModelAndView mView;
+
+    protected Map<Object,Object> _var;
+
+    /**
+     * 控制器
+     */
+    public BaseController()
+    {
+        //request = ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getRequest();
+        //response = ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getResponse();
+        mView = new ModelAndView();
+        _var = new LinkedHashMap();
+    }
+
+
+
+    /**
+     * 往模板中写入数据
+     * @param name
+     * @param value
+     */
+    protected void assign(String name , Object value)
+    {
+        request.setAttribute(name , value);
+        _var.put(name , value);
+    }
+
+    /**
+     * 弹出框
+     * @param message
+     * @param code
+     * @param jumpUrl
+     * @param jumpTime
+     * @return
+     */
+    protected String showMessage( String message , int code , Object data , String jumpUrl , int jumpTime)
+    {
+        if(isAjax())
+        {
+            JsonResult jsonResult = new JsonResult(code , message , data);
+            return renderString(response , JSON.toJSONString(jsonResult));
+        }
+
+        assign("message" , message == null ? data : message);
+        assign("code" , code);
+        assign("jumpUrl" , jumpUrl);
+        assign("jumpTime" , jumpTime);
+
+        return "message";
+    }
+
+    /**
+     * 将写入json写到前端
+     * @return
+     */
+    public String json()
+    {
+        return jsonResult(_var);
+    }
+
+    public String jsonReturn(String message , int code , Object data)
+    {
+        JsonResult result = new JsonResult(code , message , data);
+        return renderString(response , JSON.toJSONString(result));
+    }
+
+    public String jsonResult(Object data)
+    {
+        return jsonReturn(null , 0 , data);
+    }
+
+    public String jsonError(String msg)
+    {
+        return jsonReturn(msg , 1 , null);
+    }
+
+    public Object getRequestAttributeMap()
+    {
+        //Map<Object,Object> map = new LinkedHashMap();
+        Enumeration<String> names = request.getAttributeNames();
+
+        while (names.hasMoreElements())
+        {
+            String key = names.nextElement();
+            if(!_var.containsKey(key)){
+                // 没有，则写入
+                _var.put(key , request.getAttribute(key));
+            }
+        }
+        return _var;
+    }
+
+    public String getJson()
+    {
+        Map<Object,Object> map = new LinkedHashMap();
+        Enumeration<String> names = request.getAttributeNames();
+
+        while (names.hasMoreElements())
+        {
+            String key = names.nextElement();
+            Object value = request.getAttribute(key);
+            map.put(key , value);
+        }
+        return renderString(response , JSON.toJSONString(map));
+    }
+
+
+    /**
+     * 将字符串渲染到客户端
+     *
+     * @param response 渲染对象
+     * @param string 待渲染的字符串
+     * @return null
+     */
+    public String renderString(HttpServletResponse response, String string)
+    {
+        try
+        {
+            request.getSession();
+            OutputStream stream = response.getOutputStream();
+            response.setContentType("application/json");
+            response.setCharacterEncoding("utf-8");
+            stream.write(string.getBytes());
+            stream.flush();
+        }
+        catch (IOException e)
+        {
+            e.printStackTrace();
+        }
+        return "success";
+    }
+
+    protected boolean isAjax()
+    {
+        String accept = request.getHeader("accept");
+        if (accept != null && accept.indexOf("application/json") != -1)
+        {
+            return true;
+        }
+
+        String xRequestedWith = request.getHeader("X-Requested-With");
+        if (xRequestedWith != null && xRequestedWith.indexOf("XMLHttpRequest") != -1)
+        {
+            return true;
+        }
+
+        String ajax = request.getParameter("format");
+        if ("json".equalsIgnoreCase(ajax))
+        {
+            return true;
+        }
+        return false;
+    }
+
+    /**
+     * 检测是否登录
+     * @return
+     */
+    protected boolean checkLogin()
+    {
+        if(request.getSession().getAttribute("username") == null || "".equals(request.getSession().getAttribute("username")))
+        {
+            return false;
+        }
+        return true;
+    }
+
+    /**
+     * 弹出错误信息
+     * @param message
+     * @return
+     */
+    protected String showError(String message)
+    {
+        return showMessage(message , 1 ,null, "javascript:history(-1);" , 2250);
+    }
+
+    /**
+     *  弹出错误信息
+     * @param message
+     * @param code
+     * @return
+     */
+    protected String showError(String message , int code)
+    {
+        return showMessage(message , code , null,"javascript:history(-1);" , 2250);
+    }
+
+    /**
+     * 弹出错误信息
+     * @param message
+     * @param url
+     * @return
+     */
+    protected String showError(String message , String url)
+    {
+        return showMessage(message , 1 ,null, url , 2250);
+    }
+
+    /**
+     * 弹出成功信息
+     * @param data
+     * @return
+     */
+    protected String showSuccess(Object data )
+    {
+        return showMessage(null , 0 ,data, request.getHeader("referer") , 2250);
+    }
+
+
+
+
+    /**
+     * 弹出成功信息
+     * @param data
+     * @param url
+     * @return
+     */
+    protected String showSuccess(String data , String url)
+    {
+        return showMessage(null , 0 ,data, url , 2250);
+    }
+
+
+}