页面录入数据，并检查数据库表中 是否已录入过该数据

material_add.js

$(function(){
    //检查重复按钮，点击事件
    $("#dian .checkRepetition,#mian .checkRepetition,#other .checkRepetition").click(function(){
    	var formId = $(this).attr("value");
    	checkRepetition(formId);    	
    });
})

//检查数据库表是否有已录入数据
function checkRepetition(formId){
	var shiVal=$("#"+formId+" #shi").find("option:selected").val();//shiVal="**市"
	var xianVal=$("#"+formId+" #xian").find("option:selected").val();
	var happenAreaVal=$("#"+formId+" input[name='happenArea']").val();
	var dateBeginVal=$("#"+formId+" input[name='dateBegin']").val();
	var infoTypeVal=$("#"+formId+" input[name='infoType']").val();
	if(shiVal==""||shiVal==null){
		alert("市不能为空");
	}else if(xianVal==""||xianVal==null){
		alert("县不能为空");
	}else if((happenAreaVal==""||happenAreaVal==null) && formId=="dian"){
		alert("具体地点不能为空");	
	}else if(dateBeginVal==""||dateBeginVal==null){
		alert("灾害开始时间不能为空");
	}else{
		$.ajax({  
	        url: 'zaiQingAdd/checkRepetition.data',
	        type:'post',
	        dataType:'json',
	        data:{                  
	            shiParam: shiVal,
	            xianParam:xianVal,
	            happenAreaParam: happenAreaVal,
	            dateBeginParam:dateBeginVal,
	            infoTypeParam:infoTypeVal
	        },             
	        success:function(backResult) {
	            layer.alert(backResult.msg, {icon: 0});
	        }
	    });    
	}
}

ZaiQingAddController.java

@Controller
@RequestMapping("/zaiQingAdd")
public class ZaiQingAddController {
	@Autowired	
	private DisasterMaterialSumService disasterMaterialSumService;
	/**
	 * @description: 检查是否已经录入过该数据
	 * @param shiParam 市
	 * @param xianParam 县
	 * @param happenAreaParam 具体地点
	 * @param dateBeginParam 灾害开始时间
	 * @param infoTypeParam 信息属性
	 * @return
	 */
	@RequestMapping("checkRepetition.data")
	@ResponseBody
	public String checkRepetition(String shiParam,String xianParam,String happenAreaParam,String dateBeginParam,String infoTypeParam){		
		String backResult=disasterMaterialSumService.checkRepetition(shiParam,xianParam,happenAreaParam,dateBeginParam,infoTypeParam);
		return backResult;		
	}
}

 DisasterMaterialSumService.java

public interface DisasterMaterialSumService {
        /*检查是否已录入过该数据*/
	String checkRepetition(String shiParam,String xianParam,String happenAreaParam,String dateBeginParam,String infoTypeParam);
}

DisasterMaterialSumServiceImpl.java

@Service
public class DisasterMaterialSumServiceImpl implements DisasterMaterialSumService{

	private static Logger logger = LoggerFactory.getLogger(DisasterMaterialSumServiceImpl.class);
	@Autowired
	private DisasterMaterialSumDao disMaterialSumDao;

	/*检查是否已录入过该数据*/
	public String checkRepetition(String shiParam,String xianParam,String happenAreaParam,String dateBeginParam,String infoTypeParam){      
		String sbSqlJsonStr=disMaterialSumDao.checkRepetition(shiParam,xianParam,happenAreaParam,dateBeginParam,infoTypeParam);
        String result=null;
		try {
			JSONArray jsonArray = new JSONArray(sbSqlJsonStr);
			int len=jsonArray.length();
			if(len==0){
            	result=BackMsgDTO.errorMsg("请提交,未检索到类似记录").toString();//返回数据格式为JsonObjectString
            }else{
            	result=BackMsgDTO.okMsg("已存在类似记录").toString();
            }
		} catch (JSONException e) {
			logger.error("录入重复检查，转化重复数据出错", e);
			return BackMsgDTO.okMsg("录入重复检查，转化重复数据出错").toString();
		}
		return result;
	}
}	

DisasterMaterialSumDao.java

public interface DisasterMaterialSumDao {
	/*检查是否已经录入过该数据*/
	String checkRepetition(String shiParam,String xianParam,String happenAreaParam,String dateBeginParam,String infoTypeParam);
}

DisasterMaterialSumDaoImpl.java

@Repository
public class DisasterMaterialSumDaoImpl extends BaseDao<ZaiQingInfo> implements DisasterMaterialSumDao{
	/**
	 * 从数据库获取重复数据
	 */
	public String checkRepetition(String shiParam,String xianParam,String happenAreaParam,String dateBeginParam,String infoTypeParam){
		String format_date = dateBeginParam.substring(0,10);
		String dayStartTime = format_date.concat(" ").concat("00:00:00");  
		String dayEndTime = format_date.concat(" ").concat("23:59:59");  
		StringBuffer sbSql = new StringBuffer();
		if(infoTypeParam.equals("dian")){
			sbSql.append(" SELECT ")
			.append("市 shi,县 xian,具体地点 specificSite,灾害开始日期 startTime,信息属性 dataInfo ")
			.append("from TabDisasterMaterialSum where ")
			.append("市='"+ shiParam +"' and 县='"+ xianParam +"' and 具体地点='"+ happenAreaParam +"' and ")
			.append("灾害开始日期 >= '"+ dayStartTime +"' and 灾害开始日期  <= '"+ dayEndTime +"' and ")
			.append("信息属性= '"+ infoTypeParam +"' ");
		}else{
			sbSql.append(" SELECT ")
			.append("市 shi,县 xian,具体地点 specificSite,灾害开始日期 startTime,信息属性 dataInfo ")
			.append("from TabDisasterMaterialSum where ")
			.append("市='"+ shiParam +"' and 县='"+ xianParam +"'  and ")
			.append("灾害开始日期 >= '"+ dayStartTime +"' and 灾害开始日期  <= '"+ dayEndTime +"' and ")
			.append("信息属性= '"+ infoTypeParam +"' ");	
		}
		System.out.println(sbSql);
		String sbSqlJsonStr=this.getJsonStrBySql(sbSql.toString());//将数据库查询结果转化为json字符串
		return sbSqlJsonStr;
	}
}