Ajax 如何正确更新表单中的组件

我的表格中有一堆显示图像的面板，但我有一个问题，就是要更新图像，只需单击一个按钮即可加载下一组图像。我尝试过使用ajax=false方法，但这会删除表单e.g中的所有变量用于加载图像的URL这是我的按钮：

<div style="position : absolute; right:400px; top:1500px" >
    <p:commandButton value="Confirm" id="Confirm"  actionListener="#{con.confirmButton}" oncomplete="PF('panelP').hide()" ajax="false" />
    </div> 

面板和确认按钮以如下形式存储：

<h:form id="form">


    <p:galleria id= "ISSimage" style="position : absolute; left:50px; top:550px" value="#{con.gallery}" var="image" panelWidth="500" panelHeight="313" showCaption="true">
    <p:graphicImage value="#{image}" alt="Image Description for #{image}" title="#{image}"/>
</p:galleria>

        <f:view contentType="text/html">
        <p:panel id="satImage"  style="position : absolute; right:50px; top:550px" panelWidth="500" panelHeight="400">
        <p:gmap id="satview" center="#{con.lati}, #{con.longi}" zoom="6" type="SATELLITE" style="width:600px;height:400px" model="#{con.simpleModel}"  />
    </p:panel>
    </f:view>

我尝试存储所有图像的列表 是否有一种方法可以在不删除图像变量的情况下，通过单击确认按钮正确加载下一组图像

我的BEAN有300行，所以我只限于显示相关部分。这是： 公共无效确认按钮actionEvent{

    //setting Next Image

    //add the point depending on which panels are open then reset the panel booelan values
    gallery = new ArrayList<String>();
    candidates = new ArrayList<String>();
    Connection conn = null;
    PreparedStatement stmt = null;
    //Statement stmt1 = null;
    ResultSet rs = null;
    //gallery.clear();


    try{
        gallery = new ArrayList<String>();

        conn = DriverManager.getConnection(CONN_STRING,USERNAME,PASSWORD);

        stmt = conn.prepareStatement(op);
        //stmt.setString(1, oldconsole);
        //stmt.setString(2, oldconsole);
        stmt.setDouble(1, oldlati);
         stmt.executeUpdate();

        stmt = conn.prepareStatement("SELECT * FROM `ISS` WHERE taskinfo__citylat = (SELECT taskinfo__citylat FROM `ISS` LIMIT ?,1)");
        int rdmnum = randomise();
        stmt.setInt(1, rdmnum);
        rs = stmt.executeQuery();
        while(rs.next()){
            String issimg=rs.getString("taskinfo__link_small");
            gallery.add(issimg);
            //ADDS IMAGES TO GALLERIA
            excl_num = rs.getInt("rownum");
            excluded.add(excl_num);
            //ADDS ROWNUMBERS TO EXCLUDED ARRAY SO THEY DONT GET CALLED AGAIN.
            lati = rs.getFloat("taskinfo__citylat");
            longi = rs.getFloat("taskinfo__citylon");
            oldlati=lati;

            }
catch(SQLException e){
            System.err.println(e);
        }
public float getLati(){
    return lati;
}
public float getLongi(){
    return longi;
}

public double getOldlati(){
    return oldlati;
}
public double getOldlongi(){
    return oldlongi;
}

---

这似乎是JavaScript，而不是Java。如果您使用正确的标记，它将改进您获得良好帮助的更改。请添加您的bean并阅读如何创建。您的bean的作用域是什么？将图像加载到panelits@Sessionscoped中