Java 如何从commandbutton按钮更新数据表？

我有一个jsf页面，当页面第一次加载时，它成功地从我的数据bean中提取数据

    <h:dataTable value="#{movie.getSearchMovieList('car')}" var="c"
                 styleClass="order-table"
                 headerClass="order-table-header"
                 rowClasses="order-table-odd-row,order-table-even-row"
                 >

        <h:column>
            <f:facet name="header">
                Movie ID
            </f:facet>
            #{c.itemid}
        </h:column>

        <h:column>
            <f:facet name="header">
                Title
            </f:facet>
            #{c.title}
        </h:column>
    </h:dataTable>

我想要的是datatable使用jsf中inputText组件的文本输入，然后在调用jsf bean中使用该输入并生成表

    <h:dataTable value="#{movie.getSearchMovieList('car')}" var="c"
                 styleClass="order-table"
                 headerClass="order-table-header"
                 rowClasses="order-table-odd-row,order-table-even-row"
                 >

        <h:column>
            <f:facet name="header">
                Movie ID
            </f:facet>
            #{c.itemid}
        </h:column>

        <h:column>
            <f:facet name="header">
                Title
            </f:facet>
            #{c.title}
        </h:column>
    </h:dataTable>

我该怎么做呢

    <h:dataTable value="#{movie.getSearchMovieList('car')}" var="c"
                 styleClass="order-table"
                 headerClass="order-table-header"
                 rowClasses="order-table-odd-row,order-table-even-row"
                 >

        <h:column>
            <f:facet name="header">
                Movie ID
            </f:facet>
            #{c.itemid}
        </h:column>

        <h:column>
            <f:facet name="header">
                Title
            </f:facet>
            #{c.title}
        </h:column>
    </h:dataTable>

具体来说，我想要的是

    <h:dataTable value="#{movie.getSearchMovieList('car')}" var="c"
                 styleClass="order-table"
                 headerClass="order-table-header"
                 rowClasses="order-table-odd-row,order-table-even-row"
                 >

        <h:column>
            <f:facet name="header">
                Movie ID
            </f:facet>
            #{c.itemid}
        </h:column>

        <h:column>
            <f:facet name="header">
                Title
            </f:facet>
            #{c.title}
        </h:column>
    </h:dataTable>

• 从inputText JSF组件获取文本输入
• 在commandButton JSF组件上单击
• 使用inputText作为bean调用的参数更新dataTable

      <h:dataTable value="#{movie.getSearchMovieList('car')}" var="c"
                   styleClass="order-table"
                   headerClass="order-table-header"
                   rowClasses="order-table-odd-row,order-table-even-row"
                   >
  
          <h:column>
              <f:facet name="header">
                  Movie ID
              </f:facet>
              #{c.itemid}
          </h:column>
  
          <h:column>
              <f:facet name="header">
                  Title
              </f:facet>
              #{c.title}
          </h:column>
      </h:dataTable>
  

      <h:dataTable value="#{movie.getSearchMovieList('car')}" var="c"
                   styleClass="order-table"
                   headerClass="order-table-header"
                   rowClasses="order-table-odd-row,order-table-even-row"
                   >
  
          <h:column>
              <f:facet name="header">
                  Movie ID
              </f:facet>
              #{c.itemid}
          </h:column>
  
          <h:column>
              <f:facet name="header">
                  Title
              </f:facet>
              #{c.title}
          </h:column>
      </h:dataTable>
  

  
  电影ID
  #{c.itemid}
  标题
  #{c.title}
  

---

在托管bean中创建一个字段，以在导航时保存默认值：

    <h:dataTable value="#{movie.getSearchMovieList('car')}" var="c"
                 styleClass="order-table"
                 headerClass="order-table-header"
                 rowClasses="order-table-odd-row,order-table-even-row"
                 >

        <h:column>
            <f:facet name="header">
                Movie ID
            </f:facet>
            #{c.itemid}
        </h:column>

        <h:column>
            <f:facet name="header">
                Title
            </f:facet>
            #{c.title}
        </h:column>
    </h:dataTable>

private String filter = "car"; // + getter/setter

然后，在视图中：

    <h:dataTable value="#{movie.getSearchMovieList('car')}" var="c"
                 styleClass="order-table"
                 headerClass="order-table-header"
                 rowClasses="order-table-odd-row,order-table-even-row"
                 >

        <h:column>
            <f:facet name="header">
                Movie ID
            </f:facet>
            #{c.itemid}
        </h:column>

        <h:column>
            <f:facet name="header">
                Title
            </f:facet>
            #{c.title}
        </h:column>
    </h:dataTable>

<h:form>
    <h:inputText label="Type search filter :" value="#{movie.filter}" />
    <h:dataTable value="#{movie.getSearchMovieList(movie.filter)}" var="c" ... >
        ...
    </h:dataTable>

    <h:commandButton value="Search" /> // no action attribute means refreshing
<h:form>

...
//无操作属性意味着刷新

非常好，谢谢。简单、简洁、有效。您不需要通过该方法传递

电影。筛选
。它会自动将其设置为
值
。当你有很多变数的时候，只是想一想。。。