BaseController的写法

来源：互联网发布：软件试运行报告编辑：程序博客网时间：2024/06/05 23:01

import java.util.HashMap;
import java.util.Map;

import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.springframework.util.Assert;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import com.common.util.Constant;
import com.common.util.QueryUtil;
import com.entity.MtaSysUser;

public class BaseController {

    protected static final String ERROR_MSG_KEY = "errorMsg";
   /** 原始的request */
    public HttpServletRequest getRequest(){
       return ((ServletRequestAttributes)RequestContextHolder.getRequestAttributes()).getRequest();
    }
   /** 原始的response */
    public HttpServletResponse getResponse(){
       return ((ServletRequestAttributes)RequestContextHolder.getRequestAttributes()).getResponse();
    }
   /** 封装为Map的session attributes */
    protected HttpSession getSession() {
        return getRequest().getSession();
    }
   /** ① 获取保存在Session中的用户对象 */
   public MtaSysUser getSessionUser() {
        return (MtaSysUser) getRequest().getSession().getAttribute(
                Constant.SESSION_USER);
    }
   /** ②将用户对象保存到Session中 */
   public void setSessionUser(MtaSysUser user) {
       getRequest().getSession().setAttribute(Constant.SESSION_USER, user);
    }
   /** ③ 获取基于应用程序的url绝对路径   */
    public final String getAppbaseUrl(String url) {
        Assert.hasLength(url, "url不能为空");
        Assert.isTrue(url.startsWith("/"), "必须以/打头");
        return getRequest().getContextPath() + url;
    }
    /** 封装为Map的getRequest()uest parameters */
   public Map getParameters() {
       return getRequest().getParameterMap();
   }
   /** 封装为Map的session attributes */
    protected Map getSessionMap() {
        return (Map)getRequest().getSession();
    }
    /** 原始的ServletContext */
    public ServletContext getServletContext() {
       return getRequest().getSession().getServletContext();
    }
    /** 设置session的最大生命周期 maxInactiveInterval的单位为秒 */
   public void getSessionMaxInactiveInterval(int maxInactiveInterval) {
       getRequest().getSession().setMaxInactiveInterval(maxInactiveInterval);
   }
   /** 记录当前页面作为返回地址 */
   public void setReferUrl() {
       String currUrl = QueryUtil.getRequestURL(getRequest());
       getSessionMap().put(Constant.REFER_URL, currUrl);
   }
   public String getReferUrl() {
       return (String) getSessionMap().get(Constant.REFER_URL);
   }

   /** 获取客户端IP地址 */
   public String getClientAddress() {
       String address = getRequest().getHeader("X-Forwarded-For");
       if (address != null) {
           return address;
       } else {
           address = getRequest().getRemoteAddr();
       }
       return address;
   }

   /**
   * 获得请求参数
   * @return
   */
   public HashMap<String, Object> getParamsToMap() {
       Map<String, String[]> parameterMap = getRequest().getParameterMap();
       HashMap<String, Object> map = new HashMap<String, Object>();
       for (Map.Entry<String, String[]> entry : parameterMap.entrySet()) {
           String key = entry.getKey().toString();
           String[] value = parameterMap.get(key);
           map.put(key, value[0]);
       }
       return map;
   }
   /**
   * 设置分页控件
   * @return
   */
   public Map<String, Object> setPage(Map<String, Object> pageMap) {
       if(pageMap != null && pageMap.containsKey("page") && pageMap.containsKey("rows")){
           int pageSize = 0;
           int rowsNum = 0;
           String page = pageMap.get("page").toString();
           String rows = pageMap.get("rows").toString();
           if (page != null && rows != null) {
               pageSize = Integer.parseInt(rows) * (Integer.parseInt(page) - 1);
               rowsNum = Integer.parseInt(rows);
               pageMap.put("page", pageSize);
               pageMap.put("rows", rowsNum);
           }
       }
       return pageMap;
   }

}

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