Question

我一直在使用百里香和弹簧靴。我可以在POST和一个简单的类中使用表单发送数据。（没有对象列表）。我试图修改（以我的形式）包含对象列表的“对象”，但在我的控制器中，我得到了具有正确数据的对象，但列表为空。

我有这个类，它包含一个对象列表：

@Entity
@Table(name = "maquina_modelo")
public class MaquinaModelo implements Serializable {
    private static final long serialVersionUID = 1L;

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Column(name = "id")
    private Integer id;

    @Basic(optional = false)
    @NotNull
    @Size(min = 1, max = 30)
    @Column(name = "modelo")
    private String modelo;
    @Basic(optional = false)
    @NotNull
    @Column(name = "anio")
    private int anio;


    @NotNull
    @Column(name = "costo")
    private BigDecimal costo;

    @NotNull
    @Column(name = "depreciacion")
    private BigDecimal depreciacion;

    //HACE REFERENCIA AL ATRIBUTO. El CAMPO DE LA CLASE, NO EL DE LA BD.
    @OneToMany(mappedBy = "maquinaModelo")
    @NotFound(action = NotFoundAction.IGNORE)
    private List<RelacionMaquinaModeloGastoIndirecto> relacionMaquinaModeloGastoIndirectoCollection;

    public MaquinaModelo() {

    }

    public MaquinaModelo(Integer id) {
        this.id = id;
    }

    public MaquinaModelo(Integer id, String modelo, int anio) {
        this.id = id;
        this.modelo = modelo;
        this.anio = anio;
    }

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }



    @Override
    public int hashCode() {
        int hash = 0;
        hash += (id != null ? id.hashCode() : 0);
        return hash;
    }

    @Override
    public boolean equals(Object object) {
        // TODO: Warning - this method won't work in the case the id fields are not set
        if (!(object instanceof MaquinaModelo)) {
            return false;
        }
        MaquinaModelo other = (MaquinaModelo) object;
        if ((this.id == null && other.id != null) || (this.id != null && !this.id.equals(other.id))) {
            return false;
        }
        return true;
    }

    @Override
    public String toString() {
        return "MaquinaModelo{" + "id=" + id + ", modelo=" + modelo + ", anio=" + anio + ", costo=" + costo + ", depreciacion=" + depreciacion + ", relacionMaquinaModeloGastoIndirectoCollection="  + '}';
    }



    public String getModelo() {
        return modelo;
    }

    public void setModelo(String modelo) {
        this.modelo = modelo;
    }

    public int getAnio() {
        return anio;
    }

    public void setAnio(int anio) {
        this.anio = anio;
    }

    public List<RelacionMaquinaModeloGastoIndirecto> getRelacionMaquinaModeloGastoIndirectoCollection() {
        return relacionMaquinaModeloGastoIndirectoCollection;
    }

    public void setRelacionMaquinaModeloGastoIndirectoCollection(List<RelacionMaquinaModeloGastoIndirecto> relacionMaquinaModeloGastoIndirectoCollection) {
        this.relacionMaquinaModeloGastoIndirectoCollection = relacionMaquinaModeloGastoIndirectoCollection;
    }

    public BigDecimal getCosto() {
        return costo;
    }

    public void setCosto(BigDecimal costo) {
        this.costo = costo;
    }

    public BigDecimal getDepreciacion() {
        return depreciacion;
    }

    public void setDepreciacion(BigDecimal depreciacion) {
        this.depreciacion = depreciacion;
    }


}

我可以在MaquinaModelo中执行CRUD操作，并以此格式显示来自List<RelacionMaquinaModeloGastoIndirecto>的数据：

<form th:action="${maquinaModelo.id>0}? @{/costos/admin/maquinaModelo/modificar}:@{/costos/admin/maquinaModelo}" method="post" >

            <div class="form-group">
                <input type="hidden"    name="id";
                th:value="${maquinaModelo.id}">

                <div class="input-group">
                    <span class="input-group-addon">Modelo</span>
                    <input th:type="text"
                    th:value="${maquinaModelo.modelo}"
                    name="modelo"
                    class="form-control input-lg mayusculas">
                    <div th:if="${#fields.hasErrors('maquinaModelo.modelo')}" th:errors="${maquinaModelo.modelo}" class="alert alert-danger"></div>
                </div>
            </div>
            <div class="form-group">
                <div class="input-group">
                    <span class="input-group-addon">Año</span>
                    <input th:type="text"
                    th:value="${maquinaModelo.anio}"
                    name="anio"
                    class="form-control input-lg mayusculas">
                    <div th:if="${#fields.hasErrors('maquinaModelo.anio')}" th:errors="${maquinaModelo.anio}" class="alert alert-danger"></div>
                </div>
            </div>
            <div class="form-group">
                <div class="input-group">
                    <span class="input-group-addon">Costo</span>
                    <input th:type="text"
                    th:value="${maquinaModelo.costo}"
                    name="costo"
                    class="form-control input-lg mayusculas">
                    <div th:if="${#fields.hasErrors('maquinaModelo.costo')}" th:errors="${maquinaModelo.costo}" class="alert alert-danger"></div>
                </div>
            </div>
            <div class="form-group">
                <div class="input-group">
                    <span class="input-group-addon">Depreciación</span>
                    <input th:type="text"
                    th:value="${maquinaModelo.depreciacion}"
                    name="depreciacion"
                    class="form-control input-lg mayusculas">
                    <div th:if="${#fields.hasErrors('maquinaModelo.depreciacion')}" th:errors="${maquinaModelo.depreciacion}" class="alert alert-danger"></div>
                </div>
            </div>

            <div class="row">
                <div class="col-xs-12 text-right">
                    <a type="button" class="btn btn-danger BOTON_LIMPIAR" href="/index"> <span class="  glyphicon glyphicon-remove"></span> Cancelar</a>
                    <button type="submit" class="btn btn-success"> <span class="glyphicon glyphicon-floppy-save"></span> <span th:text="${maquinaModelo.id>0}? @{Modificar}:@{Guardar}"></span></button>
                </div>
            </div>



            <div class="form-group col-xs-12  ">
                <div class="input-group">
                    <span class="input-group-addon">Gastos indirectos</span>
                    <select class="form-control input-lg lista-articulos" >
                        <option th:each="gasto:${gastosIndirectos}"
                                th:value="${gasto.idGastoIndirecto}"
                                th:text="${gasto.nombreGasto}"> </option>
                    </select>
                </div>
                <a class="btn btn-success btn-cargar-articulo"> + Añadir gasto</a>
            </div>


            <hr>
            <h1>Elementos de gasto indirecto</h1>


            <div th:each="costo, i:${maquinaModelo.relacionMaquinaModeloGastoIndirectoCollection}" >
                <div class="form-group">
                <div class="input-group">
                    <span class="input-group-addon" th:text="${costo.gastoIndirecto.nombreGasto}" ></span>
                    <input th:type="text"
                    th:value="${maquinaModelo.relacionMaquinaModeloGastoIndirectoCollection[__${i.index}__].consumoHora}"
                    th:name="${maquinaModelo.relacionMaquinaModeloGastoIndirectoCollection[__${i.index}__]}"
                    class="form-control input-lg mayusculas">
                    <!-- <div th:if="${#fields.hasErrors('maquinaModelo.depreciacion')}" th:errors="${maquinaModelo.depreciacion}" class="alert alert-danger"></div> -->
                </div>
            </div>
            </div>
        </form>

但是，当我提交表单时，列表为空。我怎样才能让它发挥作用？

的更新

@Controller
@RequestMapping(value ="/costos/**")
public class CostosController {

//....



@RequestMapping(value = "admin/maquinaModelo/modificar/{id}", method = RequestMethod.GET)
public ModelAndView maquinaModeloModificar(@PathVariable("id") int id){
    ModelAndView mav = new ModelAndView();

    if (maquinaModeloService.exist(id)) {
        MaquinaModelo maquina = maquinaModeloService.find(id);
        mav.addObject("maquinaModelo", maquina);
    } else {
        mav.addObject("error", "El modelo no existe: "+id);
        mav.addObject("maquinaModelo", new MaquinaModelo());
    }


    mav.addAllObjects(gds.costos_MaquinaModelo(gds.getUser()));
    mav.setViewName("costos/maquinaModelo");
    return mav;
}

@RequestMapping(value = "admin/maquinaModelo/modificar", method = RequestMethod.POST)
public ModelAndView maquinaModeloModificar(
        MaquinaModelo maquinaModelo,
        BindingResult br
){
    ModelAndView mav = new ModelAndView();
     if (br.hasErrors()) {
        mav.setViewName("costos/maquinaModelo");
        mav.addObject("maquinaModelo", maquinaModelo);
    } else {
        if (maquinaModeloService.update(maquinaModelo)) {
            mav.addObject("success", "El modelo se ha modificado con exito.");
            mav.addObject("maquinaModelo", new MaquinaModelo());
        } else {
            mav.addObject("error", "Algo paso y no se pudo guardar el modelo.");
            mav.addObject("maquinaModelo", maquinaModelo);
        }
    }

    mav.addAllObjects(gds.costos_MaquinaModelo(gds.getUser()));
    mav.setViewName("costos/maquinaModelo");
    return mav;
}

}

通过POST发送时，null MyObject.List <foo>的列表

的更新

0 个答案: