SPRINGMVC注解@Resource

SPRINGMVC使用SERVICE层的服务，需要在controller中注册，有几个服务注册几个。如下：

    @Resource
    private MondataService mondataservice;  
    @Resource
    private DatanameService datanameservice;
    @Resource
    private ProgramService programservice;
    @Resource
    private DiService diservice;

注意，必须有几个服务，写几个Resource,否则会报错。
如下是全部的代码:

package org.cma.hljdc.controller;

import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
import javax.annotation.Resource;
import java.util.List;
import net.sf.json.JSONArray;
import net.sf.json.JSONObject;
import org.cma.hljdc.model.*;
import org.cma.hljdc.service.*;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;


@Controller
public class MonController {

    @Resource
    private MondataService mondataservice;  
    @Resource
    private DatanameService datanameservice;
    @Resource
    private ProgramService programservice;
    @Resource
    private DiService diservice;

    @RequestMapping(value="/mon.do")
    @ResponseBody
    public  Map<string, object=""> monjson(){

        Map<string, object=""> result = new HashMap<string, object="">(2); 

        //初始化三个参数：datasource,date,time
        String datasource="23";
        Date d=new Date();  
        SimpleDateFormat df=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");         
        String date=df.format(d.getTime()-1000*60*60*8).substring(0, 10);
        String time=df.format(d.getTime()-1000*60*60*8).substring(11, 13)+":00";

        List<mondata> Mondatalist = mondataservice.selectMondata(date, time, datasource);


        JSONArray jsonArray = new JSONArray();

        for(Mondata mondata:Mondatalist){

            JSONObject jsonObject = new JSONObject();  
            String name=datanameservice.selectDataname(mondata.getMonDataCode());
            jsonObject.put("dataname",name) ;  
            jsonObject.put("datatime",date+" "+time);  

            List<program> programlist=programservice.selectProgram(date, time, mondata.getMonDataCode(), datasource);
            jsonObject.put("tolnum", programlist.size());  

            List<di> dilist=diservice.selectDi(date, time, mondata.getMonDataCode(), datasource);
            jsonObject.put("num",dilist.size());  
            jsonArray.add(jsonObject) ;  
        }
        result.put("total", Mondatalist.size());
        result.put("rows",jsonArray);

        return result;

    }

}