webcrawler/web/src/main/java/web/controller/TableController.java

package web.controller;

import core.service.BaseService;
import db.AbstractModel;
import db.DBAction;
import db.PageResult;
import db.Type;
import org.springframework.dao.DataAccessException;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;

import java.util.List;

public abstract class TableController<T extends AbstractModel,E extends BaseService> extends BaseController<T,E> {

    @RequestMapping("table")
    public <T extends AbstractModel> String find(Model model, T queryCommand, @RequestParam Integer firstResult, @RequestParam Integer maxResults){
        DBAction action=DBAction.R;
        log.info(queryCommand.tableNote()+ "进行批量" + action.getCh() + "操作请求");
        PageResult result;
        if(checkAction(action)) {
            try {
                Long rowCount=service.rowCount(queryCommand.getClass());
                if(rowCount>0) {
                    List list = service.find(queryCommand, firstResult*maxResults, maxResults);
                    result=new PageResult<T>(rowCount, firstResult,list,maxResults , Type.success);
                }else{
                    result=new PageResult(Type.fail,"没有记录");
                }
            } catch (DataAccessException e) {
                log.error(e);
                result=new PageResult(Type.fail,"非法操作");
            }
        }else{
            result=new PageResult(Type.fail,queryCommand.tableNote() + "不允许" + action.getCh() + "操作");
        }

        model.addAttribute("datas", result);
        return "table";
    }


    @Override
    protected boolean checkAction(DBAction action) {
        return false;
    }
}