content: package com.ruoyi.common.core.controller;
  
  import java.beans.PropertyEditorSupport;
  import java.util.Date;
  import java.util.List;
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  import javax.servlet.http.HttpSession;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  import org.springframework.web.bind.WebDataBinder;
  import org.springframework.web.bind.annotation.InitBinder;
  import com.github.pagehelper.PageHelper;
  import com.github.pagehelper.PageInfo;
  import com.ruoyi.common.core.domain.AjaxResult;
  import com.ruoyi.common.core.domain.AjaxResult.Type;
  import com.ruoyi.common.core.page.PageDomain;
  import com.ruoyi.common.core.page.TableDataInfo;
  import com.ruoyi.common.core.page.TableSupport;
  import com.ruoyi.common.utils.DateUtils;
  import com.ruoyi.common.utils.ServletUtils;
  import com.ruoyi.common.utils.StringUtils;
  import com.ruoyi.common.utils.sql.SqlUtil;
  
  /**
   * web层通用数据处理
   * 
   * @author ruoyi
   */
  public class BaseController
  {
      protected final Logger logger = LoggerFactory.getLogger(BaseController.class);
  
      /**
       * 将前台传递过来的日期格式的字符串，自动转化为Date类型
       */
      @InitBinder
      public void initBinder(WebDataBinder binder)
      {
          // Date 类型转换
          binder.registerCustomEditor(Date.class, new PropertyEditorSupport()
          {
              @Override
              public void setAsText(String text)
              {
                  setValue(DateUtils.parseDate(text));
              }
          });
      }
  
      /**
       * 设置请求分页数据
       */
      protected void startPage()
      {
          PageDomain pageDomain = TableSupport.buildPageRequest();
          Integer pageNum = pageDomain.getPageNum();
          Integer pageSize = pageDomain.getPageSize();
          if (StringUtils.isNotNull(pageNum) && StringUtils.isNotNull(pageSize))
          {
              String orderBy = SqlUtil.escapeOrderBySql(pageDomain.getOrderBy());
              PageHelper.startPage(pageNum, pageSize, orderBy);
          }
      }
  
      /**
       * 设置请求排序数据
       */
      protected void startOrderBy()
      {
          PageDomain pageDomain = TableSupport.buildPageRequest();
          if (StringUtils.isNotEmpty(pageDomain.getOrderBy()))
          {
              String orderBy = SqlUtil.escapeOrderBySql(pageDomain.getOrderBy());
              PageHelper.orderBy(orderBy);
          }
      }
  
      /**
       * 获取request
       */
      public HttpServletRequest getRequest()
      {
          return ServletUtils.getRequest();
      }
  
      /**
       * 获取response
       */
      public HttpServletResponse getResponse()
      {
          return ServletUtils.getResponse();
      }
  
      /**
       * 获取session
       */
      public HttpSession getSession()
      {
          return getRequest().getSession();
      }
  
      /**
       * 响应请求分页数据
       */
      @SuppressWarnings({ "rawtypes", "unchecked" })
      protected TableDataInfo getDataTable(List<?> list)
      {
          TableDataInfo rspData = new TableDataInfo();
          rspData.setCode(0);
          rspData.setRows(list);
          rspData.setTotal(new PageInfo(list).getTotal());
          return rspData;
      }
  
      /**
       * 响应返回结果
       * 
       * @param rows 影响行数
       * @return 操作结果
       */
      protected AjaxResult toAjax(int rows)
      {
          return rows > 0 ? success() : error();
      }
  
      /**
       * 响应返回结果
       * 
       * @param result 结果
       * @return 操作结果
       */
      protected AjaxResult toAjax(boolean result)
      {
          return result ? success() : error();
      }
  
      /**
       * 返回成功
       */
      public AjaxResult success()
      {
          return AjaxResult.success();
      }
  
      /**
       * 返回失败消息
       */
      public AjaxResult error()
      {
          return AjaxResult.error();
      }
  
      /**
       * 返回成功消息
       */
      public AjaxResult success(String message)
      {
          return AjaxResult.success(message);
      }
  
      /**
       * 返回失败消息
       */
      public AjaxResult error(String message)
      {
          return AjaxResult.error(message);
      }
  
      /**
       * 返回错误码消息
       */
      public AjaxResult error(Type type, String message)
      {
          return new AjaxResult(type, message);
      }
  
      /**
       * 页面跳转
       */
      public String redirect(String url)
      {
          return StringUtils.format("redirect:{}", url);
      }
  }
  