使用JSF PrimeFaces时,在java.lang.String类型上不可读的属性
发布时间:2020-12-14 06:04:58 所属栏目:Java 来源:网络整理
导读:我正在尝试使用站点中的演示代码在数据表中实现延迟加载数据 PrimeFaces Lazy loading 我收到了错误 javax.el.PropertyNotFoundException: /table.xhtml @14,49 value="#{car.year}": Property 'year' not readable on type java.lang.String 这是我的table.
我正在尝试使用站点中的演示代码在数据表中实现延迟加载数据
PrimeFaces Lazy loading 我收到了错误 javax.el.PropertyNotFoundException: /table.xhtml @14,49 value="#{car.year}": Property 'year' not readable on type java.lang.String 这是我的table.xhtml代码 <html xmlns="http://www.w3.org/1999/xhtml" xmlns:h="http://java.sun.com/jsf/html" xmlns:f="http://java.sun.com/jsf/core" xmlns:ui="http://java.sun.com/jsf/facelets" xmlns:p="http://primefaces.org/ui"> <h:form id="form"> <p:dataTable var="car" value="#{tableBean.lazyModel}" paginator="true" rows="10" id="carTable" lazy="true"> <p:column headerText="Year" sortBy="year" filterBy="#{car.year}"> <h:outputText value="#{car.year}" /> </p:column> <p:column headerText="Color" sortBy="color" filterBy="#{car.color}"> <h:outputText value="#{car.color}" /> </p:column> </p:dataTable> TableBean代码 @ManagedBean public class TableBean { private LazyDataModel<Car> lazyModel; private List<Car> cars; public TableBean() { System.out.println("Girish"); cars = populateRandomCars(50); lazyModel = new LazyCarDataModel(cars); lazyModel.setRowCount(10); } public LazyDataModel<Car> getLazyModel() { return lazyModel; } public void setLazyModel(LazyDataModel<Car> lazyModel) { this.lazyModel = lazyModel; } public List<Car> getCars() { return cars; } public void setCars(List<Car> cars) { this.cars = cars; } private List<Car> populateRandomCars( int size) { List<Car> list = new ArrayList<Car>(); Car car = null; for(int i = 0 ; i < size ; i++) { car = new Car(); car.setColor("color "+i); car.setYear(""+i); list.add(car); } return list; } } 车密码 class Car { private String year; private String color; public String getYear() { return year; } public void setYear(String year) { this.year = year; } public String getColor() { return color; } public void setColor(String color) { this.color = color; } } 和LazyCarDataModel代码 public class LazyCarDataModel extends LazyDataModel<Car> { /** * */ private static final long serialVersionUID = 1L; private List<Car> datasource; public LazyCarDataModel(List<Car> datasource) { this.datasource = datasource; } @Override public Car getRowData(String rowKey) { return new Car(); } @Override public Object getRowKey(Car car) { return car.getYear(); } @Override public List<Car> load(int first,int pageSize,String sortField,SortOrder sortOrder,Map<String,String> filters) { List<Car> data = new ArrayList<Car>(); //filter for(Car car : datasource) { boolean match = true; for(Iterator<String> it = filters.keySet().iterator(); it.hasNext();) { try { String filterProperty = it.next(); String filterValue = filters.get(filterProperty); String fieldValue = String.valueOf(car.getClass().getField(filterProperty).get(car)); if(filterValue == null || fieldValue.startsWith(filterValue)) { match = true; } else { match = false; break; } } catch(Exception e) { match = false; } } if(match) { data.add(car); } } //rowCount int dataSize = data.size(); this.setRowCount(dataSize); //paginate if(dataSize > pageSize) { try { return data.subList(first,first + pageSize); } catch(IndexOutOfBoundsException e) { return data.subList(first,first + (dataSize % pageSize)); } } else { return data; } } } 请帮忙. 提前致谢. 解决方法
模型类,在这种情况下,Car必须是公开的.
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