p:dataTable does not paginate

Question

我有一个分页数据表:

<h:form>
    <p:dataTable var="proj" value="#{orderListView.projects}"
                 paginator="true" rows="3"
                 paginatorTemplate="{RowsPerPageDropdown} {FirstPageLink} {PreviousPageLink} {CurrentPageReport} {NextPageLink} {LastPageLink}"
    >
        <p:column sortBy="#{proj.id}">
            <h:outputText value="#{proj.id}" />
        </p:column>
        <p:column  sortBy="#{proj.name}">
            <h:outputText value="#{proj.name}" />
        </p:column>
        <p:column sortBy="#{proj.displayName}">
            <h:outputText value="#{proj.displayName}" />
        </p:column>
    </p:dataTable>
</h:form>

基于这个实体:

@Entity
public class Project implements Serializable {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private int id;
    private String displayName;
    private String name;
    public Project() {}
    public Project(int id, String displayName, String name) {
        this.id = id; 
        this.displayName = displayName;
        this.name = name;
    }
    // Getters+setters.
}

在此bean中填充(为简洁起见，我省略了DAO/Service部分，并且在@PostConstruct中硬编码模型):

@ManagedBean
@RequestScoped
public class OrderListView {
    private List<Project> projects;
    @PostConstruct
    public void init() {
        projects = new ArrayList<Project>();
        projects.add(new Project(10, "Cruze", "cruze"));
        projects.add(new Project(11, "Dark-Hive", "dark-hive"));
        projects.add(new Project(12, "Delta", "delta"));
        projects.add(new Project(10, "Cruze", "cruze"));
        projects.add(new Project(11, "Dark-Hive", "dark-hive"));
        projects.add(new Project(12, "Delta", "delta"));
        projects.add(new Project(13, "Dot-Luv", "dot-luv"));
        projects.add(new Project(14, "Eggplant", "eggplant"));
        projects.add(new Project(15, "Excite-Bike", "excite-bike"));
        projects.add(new Project(16, "Flick", "flick"));
        projects.add(new Project(17, "Glass-X", "glass-x"));
        projects.add(new Project(18, "Cruze", "cruze"));
        projects.add(new Project(19, "Dark-Hive", "dark-hive"));
        projects.add(new Project(20, "Delta", "delta"));
        projects.add(new Project(23, "Dot-Luv", "dot-luv"));
        projects.add(new Project(24, "Eggplant", "eggplant"));
        projects.add(new Project(25, "Excite-Bike", "excite-bike"));
        projects.add(new Project(26, "Flick", "flick"));
        projects.add(new Project(27, "Glass-X", "glass-x"));
    }
    public List<Project> getProjects() {
        return projects;
    }
}

数据表正确地显示了列表，但是分页不起作用。这是如何造成的，我该如何解决?我也尝试过延迟加载，但它也不工作

Answer 1

我不知道你这端出了什么问题，但我把你的代码复制到一个测试项目中，paginator在PrimeFaces 5.2中工作得很好。