在JSF中如何使用AJAX

最新推荐文章于 2021-08-06 13:35:20 发布

elevenXL

最新推荐文章于 2021-08-06 13:35:20 发布

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分类专栏： Netbeans Java 文章标签： jsf ajax html bean 服务器 class

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本文介绍如何通过地址获取JSF的运行结果，并实现客户端的AJAX远程调用功能。具体步骤包括：添加依赖库shale-remoting.jar；定义输出Bean处理HTTP缓存及响应内容；在JSF配置中注册Bean；最后通过指定URL调用。

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实现功能：如何通过地址取得JSF的运行结果，即AJAX的服务器端程序，客户端可根据自己的爱好进行选择

1、加入 shale-remoting.jar

2、定义XML输出Bean:

public class AjaxCommonImpl {

public void pageContext() throws IOException {
        FacesContext context = FacesContext.getCurrentInstance();
        // temp fix until shale-remoting allows the no-cache setting
        HttpServletResponse response = (HttpServletResponse) context
                .getExternalContext().getResponse();

        response.setHeader("Pragma", "No-Cache");
        response.setHeader("Cache-Control", "no-cache,no-store,max-age=0");
        response.setDateHeader("Expires", 1);
        response.setCharacterEncoding("UTF-8");

        // Acquire a response containing these results
        ResponseWriter out = factory.getResponseWriter(context, "text/html");
        out.startElement("html", treePanel);
        out.write("/n");
        out.startElement("head", treePanel);
        out.write("/n");
        this.importResouse(treePanel, out);
        out.endElement("head");
        out.write("/n");
        out.startElement("body", treePanel);
        out.write("/n");
       out.endElement("body");
        out.write("/n");
        out.endElement("html");
}
3、注册JSF实体

<managed-bean>
  <managed-bean-name>complibtreePanel</managed-bean-name>
  <managed-bean-class>
   com.jl.complib.treepanel.ajax.AjaxCommonImpl</managed-bean-class>
  <managed-bean-scope>request</managed-bean-scope>
</managed-bean>