ssm整合redis&kafka&es

package com.bw.controller;

import java.io.File;
import java.io.IOException;
import java.util.List;
import java.util.UUID;

import javax.servlet.http.HttpServletRequest;

import org.aspectj.apache.bcel.classfile.Field;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.elasticsearch.core.ElasticsearchTemplate;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.kafka.core.KafkaTemplate;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.multipart.MultipartFile;

import com.alibaba.fastjson.JSON;
import com.bw.bean.Sedan;
import com.bw.service.SedanService;
import com.bw.utils.HLUtils;
import com.github.pagehelper.PageInfo;

@Controller
public class MyController {

    @Autowired
    SedanService sedanService;
    
    @Autowired
    RedisTemplate redisTemplate;
    
    @Autowired
    ElasticsearchTemplate elasticsearchTemplate;
    
    @Autowired
    KafkaTemplate<String, String> kafkaTemplate;
    
    @RequestMapping("sousuo")
    public Object sousuo(Model model,String keyword,@RequestParam(defaultValue = "1")Integer pageNum,@RequestParam(defaultValue = "3")Integer pageSize) {
        
        PageInfo<Sedan> info = (PageInfo<Sedan>) HLUtils.findByHighLight(elasticsearchTemplate, Sedan.class, pageNum, pageSize, new String[] {"name","typea"}, "id", keyword);
        
        model.addAttribute("info", info);
        model.addAttribute("key", keyword);
        
        return "sousuo";
    }
    
    @SuppressWarnings("unchecked")
    @RequestMapping("list")
    public String list(Model model,@RequestParam(defaultValue = "1")Integer pageNum,@RequestParam(defaultValue = "3")Integer pageSize) {
        
        if (pageNum>1) {
            PageInfo<Sedan> info = sedanService.info(pageNum, pageSize);
            
            model.addAttribute("info", info);
        }
        if (pageNum==1) {
            
            //先看redis中有没有
            List<Sedan> list = redisTemplate.opsForList().range("sedan", 0, -1);
            if (list==null||list.size()==0) {
                PageInfo<Sedan> info = sedanService.info(pageNum, pageSize);
                System.err.println("从mysql中查询了数据！！！！！！！！！！！！！");
                
                redisTemplate.opsForList().leftPushAll("sedan", info.getList().toArray());
                model.addAttribute("info", info);
            }else {
                //redis数据不为空
                System.err.println("从redis中查出了数据");
                PageInfo<Sedan> info = sedanService.info(pageNum, pageSize);
                model.addAttribute("info", info);
            }
        }
        
        
        return "list";
    }
    
    @RequestMapping("toadd")
    public Object toadd() {
        
        return "add";
    }
    
    @RequestMapping("save")
    public Object add(Sedan sedan,HttpServletRequest request,MultipartFile myFile) throws IllegalStateException, IOException {
        
        String startName = UUID.randomUUID().toString();
        
        String url=request.getRealPath("/load/");
        
        File file = new File(url+startName);
        
        myFile.transferTo(file);
        
        sedan.setPic(startName);
        
        sedanService.save(sedan);
        
        String jsonString = JSON.toJSONString(sedan);
        
        kafkaTemplate.send("sedan","add="+jsonString);
        System.err.println("发送卡夫卡消息！！！！！");
        
        return "redirect:list";
    }
    
    @RequestMapping("toUpdate")
    public Object toUpdate(int id,Model model) {
        
        Sedan sedan=sedanService.selectOne(id);
        
        model.addAttribute("sedan", sedan);
        
        return "update";
    }
    
    @RequestMapping("update")
    public Object update(Sedan sedan,HttpServletRequest request,MultipartFile myFile) throws IllegalStateException, IOException {
        
        String startName = UUID.randomUUID().toString();
        
        String url=request.getRealPath("/load/");
        
        File file = new File(url+startName);
        
        myFile.transferTo(file);
        
        sedan.setPic(startName);
        
        sedanService.update(sedan);
        
        String jsonString = JSON.toJSONString(sedan);
        kafkaTemplate.send("sedan","update="+jsonString);
        
        return "redirect:list";
    }
    
    @RequestMapping("seare")
    public Object seare(Model model,int id) {
        
        Sedan sedan = sedanService.selectOne(id);
        model.addAttribute("sedan", sedan);
        return "show";
    }
}