我正在尝试使用JSF 2和RichFaces 4.3.7进行分页。我浏览了richface4中关于此链接中分页的示例：http://showcase.richfaces.org/richfaces/component-sample.jsf?demo=dataScroller&sample=simpleScrolling&skin=blueSky
正如你所看到的，<rich:dataScroller for="table" maxPages="5" fastStep="3">没有增加任何值，我想知道它是如何控制下一页的数据库的？我实现了从数据库存储数据的类，并尝试处理分页。但当我点击下一页时，什么都不会发生。我想我错过了java类和RichLazyDataModel类中的一些东西，我在stackoverflow JSF、RichFaces、分页中的一个问题中找到了这些东西
因此RichLazyDataModelImpl扩展了该类任何帮助感谢
public class RichLazyDataModelImpl extends RichLazyDataModel<User> {
int firstRow = 0;
int numRows = 5;
@Override
public List<User> getDataList(int firstRow, int numRows) {
return getDataList() ;
}
public List<User> getDataList() {
try {
Connection conn = DriverManager.getConnection(configure.myUrl, "root",
"pass");
String sql = "select * from messages order by id_messages"; // limit ? offset ? ";
PreparedStatement stmt = (PreparedStatement) conn.prepareStatement(sql);
//stmt.setInt(2, new Integer(firstRow));
//stmt.setInt(1, new Integer(numRows));
ResultSet rs = stmt.executeQuery();
List<User> result = new ArrayList<User>();
while(rs.next()) {
// read entry no. n
User user = new User();
String mobile =rs.getString("msg_msisdn");
user.setMsg_mobile(mobile);
String direction = rs.getString("msg_direction");
user.setDirection(direction);
String msg = rs.getString("msg_text");
user.setMessage(msg);
String status = rs.getString("msg_status");
user.setMsg_status(status);
Date time = rs.getDate("msg_time");
user.setMsg_time((java.sql.Date) time);
result.add(user);
}
return result;
} catch (SQLException e) {
e.printStackTrace();
}
return null;
}
@Override
public Object getKey(User user) {
// TODO Auto-generated method stub
//return null;
return user;
}
@Override
public int getTotalCount() {
String sql = " select count(*) as cnt from messages";
PreparedStatement stmt;
Integer result = 0;
try {
Connection conn = DriverManager.getConnection(configure.myUrl, "pegah",
"pass");
stmt = (PreparedStatement) conn.prepareStatement(sql);
ResultSet rs = stmt.executeQuery();
result = rs.getInt("cnt");
rs.close();
conn.close();
System.out.println("The number of dataBase is "+result);
} catch (SQLException e) {
e.printStackTrace();
}
return result;
}
public void setCurrentPage(int page) {
int row = (page-1) * numRows;
firstRow = row;
}
public int getCurrentPage() {
int page = firstRow / numRows;
return page;
}
}
表.xhtml
<rich:dataScroller id="sc2" for="table" maxPages="3" fastStep="3" >
</rich:dataScroller>
<rich:dataTable value="#{RichLazyDataModelImpl.getDataList()}" var="cate" id="table" rows="5">
<rich:column >
<f:facet name="header">
<h:outputText value="Mobile " />
</f:facet>
<h:outputText value="#{cate.getMsg_mobile()}" />
</rich:column>
.
.
.
RichLazyModelImpl.javaEverything are Fine问题是我应该将由bootstrap部分组成的<head>添加到xhml文件中，该文件在richFace网站上的示例中没有提到，现在一切都很好。Richface将负责分页。