Question

我没有收到任何错误，但我的应用没有在数据库中保存数据。

这里有profitTable.gsp

                <g:form controller="dailyProfit" action="save" >
                    <div class="fieldcontain ${hasErrors(bean: dailyProfitInstance, field: 'date', 'error')} required>
                        <label for="date" >Date</label>
                        <g:datePicker name="date" precision="day"   value="${dailyProfitInstance?.date}"  />
                    </div>
                    <br>
                    <div class="fieldcontain ${hasErrors(bean: dailyProfitInstance, field: 'profit', 'error')} required>
                        <label for="profit">Profit</label>
                        <span class="required-indicator">*</span>
                        <g:field name="profit" value="${fieldValue(bean: dailyProfitInstance, field: 'profit')}" required=""/>
                    </div>
                    <br>
                    <g:submitButton name="create" class="save btn btn-default " value="${message(code: 'default.button.create.label', default: 'Create')}" />
                </g:form>

这是我的控制器

package samplegrailsapp

class DailyProfitController {
    def scaffold = DailyProfit
    def index() { 
        render(view:"profitTable");
    }

    def save() {
       // Date myDate = params.date('test', 'yyyy-MM-dd');
        def dailyProfit = new DailyProfit(params)
        params.date = params.date_year + "-0" + params.date_month + "-" + params.date_day
        println params.toString();
        dailyProfit.save()
        render(view:"profitTable");
    }
}

这是我的域类

package samplegrailsapp

import java.text.DateFormat
import java.text.SimpleDateFormat
import org.grails.databinding.BindingFormat
class DailyProfit {
    @BindingFormat('yyyy-MM-dd')
    Date date;
    double profit; 

    static constraints = {
        date (blank:false, nullable:false, validator: {value, object ->
           DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");
           Calendar cal  = Calendar.getInstance();
           cal.setTime(new Date());
           cal.set(Calendar.HOUR_OF_DAY, 0);
           cal.set(Calendar.MINUTE, 0);
           cal.set(Calendar.SECOND, 0);
           cal.set(Calendar.MILLISECOND, 0);
            if(!(cal.getTime().before(value) || cal.getTime().equals(value))){
                return false;
            } 
        })
        profit (blank:false, nullable:false, validator: {value, object ->
                if (!value.toString().matches(/^([1-9]{1}[0-9]*\.{0,1}\d{0,2}|0\.[0-9]{1,2}|0)$/) ) return false;
        })     
    }

    static mapping = {
        version false
        //id generator:'assigned', name:'date'
        id column: 'date', name: 'date', generator: 'assigned'
    }

}

这是params内的数据。

[date_day:10, profit:8, date_year:2015, date_month:8, date:2015-08-10, create:Create, action:save, format:null, controller:dailyProfit]

当我查看日志时，这就是我得到的：

Hibernate：选择dailyprofi_.date，dailyprofi_.profit作为profit0_ 来自daily_profit dailyprofi_其中dailyprofi_.date =？休眠：插入daily_profit（利润，日期）值（？，？）

为什么它不能从params中读取数据？我该怎么做才能解决它？

Answer 1

代码的问题是dailyProfit.date采用日期对象，但您提供的是字符串日期。我也遇到了同样的问题。以下是代码：

def save() {
       // Date myDate = params.date('test', 'yyyy-MM-dd');

        SimpleDateFormat sdf = new SimpleDateFormat("dd-MM-yyyy");

        def dailyProfit = new DailyProfit()
        def updatedDate = params.date_year + "-0" + params.date_month + "-" + params.date_day
        dailyProfit.date = sdf.parse(updatedDate);

        dailyProfit.profit = params.profit

        dailyProfit.save()
        render(view:"profitTable");
    }

请告诉我它是否有效。

快乐编码。

不在数据库中插入数据 - grails

1 个答案: