Question

我正在使用Spring 2.5，并使用Ajax.updater（1.7）从Spring中的请求映射中获取响应。

在请求映射中，我返回一个ModelAndView，它引用带有一些文本的jsp。但问题是当ajax收到响应并更新容器时，整个页面被包装在容器中而不是jsp输出中，为什么会这样呢

Answer 1

好的，这就是我在Spring 2.5中使用ajax的方法

首先，您需要控制器来响应ajax调用

public class AjaxController extends MultiActionController {

    // injected services, daos here

    public ModelAndView getAjaxData(HttpServletRequest request, HttpServletResponse response) throws Exception {
        String data = // construct your ajax response here - string, json, xml etc
        model.put("data", data);
        return new ModelAndView("ajax_foo", model);
    }

     public ModelAndView anotherMethod(HttpServletRequest request, HttpServletResponse response) throws Exception {
        String data = // construct your ajax response here - string, json, xml etc
        model.put("data", data);
        return new ModelAndView("ajax_foo", model);
    }

}

然后你需要ajaxView将ajax数据写入响应

public class AjaxView extends AbstractView {

    @Override
    protected void renderMergedOutputModel(Map map, HttpServletRequest request, HttpServletResponse response) throws Exception {
        String ajaxResponse = map.get("data");     
        response.setContentType("text/plain; charset=UTF-8");
        response.getOutputStream().write(ajaxResponse.getBytes());

}

查看解析程序以解析ajax调用

public class AjaxViewResolver extends AbstractCachingViewResolver {

    private String ajaxPrefix;
    private View ajaxView;

    @Override
    protected View loadView(String viewName, Locale locale) throws Exception {
        View view = null;
        if (viewName.startsWith(this.ajaxPrefix)) {
            view = ajaxView;
        } else {

        }
        return view;
    }

    public void setAjaxPrefix(String ajaxPrefix) {
        this.ajaxPrefix = ajaxPrefix;
    }

    public void setAjaxView(View ajaxView) {
        this.ajaxView = ajaxView;
    }
}

网址映射，将ajax网址映射到ajax控制器

<bean id="simpleUrlMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
    <property name="mappings">
         <props>
            <prop key="/getAjaxData.htm">ajaxController</prop>
            <prop key="/anotherMethod.htm">ajaxController</prop>
        </props>
    </property>
</bean>

Controller有bean ajaxResolver作为methodNameResolver，控制器有一些服务或daos例如

  <bean name="ajaxController" class="my.test.web.ajax.AjaxController">
        <property name="service" ref="service"/>
        <property name="dao" ref="dao"/>
        <property name="methodNameResolver" ref="ajaxResolver"/>
    </bean>

方法名称解析器

<bean id="ajaxResolver"
          class="org.springframework.web.servlet.mvc.multiaction.PropertiesMethodNameResolver">
        <property name="mappings">
            <props>
                <prop key="/getAjaxData.htm">getAjaxData</prop>
                <prop key="/anotherMethod.htm">anotherMethod</prop>
            </props>
        </property>
    </bean>

Ajax View解析器在从AjaxController返回modelAndView时调用ajax视图

 <bean id="ajaxViewResolver" class="my.test.web.ajax.AjaxViewResolver">
        <property name="ajaxView">
            <bean class="my.test.web.ajax.AjaxView"/>
        </property>
        <property name="ajaxPrefix" value="ajax_"/>
    </bean>

Spring 2.5 Ajax 1.7，更新程序收到错误的响应

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