我正在尝试从我的Liferay项目的后端获取json,甚至无法设法让servResource将某些内容打印到控制台。所以我的 ajax 请求在后端不做任何事情,但仍然调用成功。我正在使用Liferay 6.1。
我尝试将jquery与$.ajax一起使用,但那是说ajax方法未定义(即使完整下载了jquery-3.2.1),所以我认为jquery在多个包含或奇怪方面存在问题。我现在正在使用 aui每次我实现 aui 时,它都会运行 ajax 函数并不断返回成功,即使它从未在后端运行过任何内容并且 this.get("responseData") 为空
查看.jsp:
<%@ taglib uri="http://java.sun.com/portlet_2_0" prefix="portlet" %>
<script src="https://code.jquery.com/jquery-3.2.1.js"></script>
<portlet:defineObjects />
<%@ taglib uri="http://liferay.com/tld/aui" prefix="aui"%>
<portlet:resourceURL var="saveData" id="saveData" ></portlet:resourceURL>
<br/>
<aui:form>
<aui:input type="text" name="Name" id="studentName"/>
<aui:input type="text" name="Email" id="studentEmail"/>
<aui:input type="text" name="ContactNo" id="studentPhone"/>
<aui:button type="button" name="saveButton" value="Save" onclick="save();" />
</aui:form>
<aui:script>
function save(){
AUI().use('aui-base','aui-io-request', function(A){
var name=A.one("#<portlet:namespace />studentName").get('value');
var email=A.one("#<portlet:namespace />studentEmail").get('value');
var contact=A.one("#<portlet:namespace />studentPhone").get('value');
A.io.request('<%=saveData%>',{
dataType: 'json',
method: 'POST',
data: { <portlet:namespace/>name: name,
<portlet:namespace/>email: email,
<portlet:namespace/>contact: contact},
on: {
success: function() {
var data=this.get('responseData');
alert("Success");
// Actions to be performed on success
}
}
});
});
}
</aui:script>
菜单.java(后端):
import java.io.IOException;
import java.io.PrintWriter;
import javax.portlet.GenericPortlet;
import javax.portlet.PortletException;
import javax.portlet.PortletRequestDispatcher;
import javax.portlet.ProcessAction;
import javax.portlet.RenderRequest;
import javax.portlet.RenderResponse;
import javax.portlet.ResourceRequest;
import javax.portlet.ResourceResponse;
import com.liferay.portal.kernel.log.Log;
import com.liferay.portal.kernel.log.LogFactoryUtil;
/**
* Portlet implementation class Menu
*/
public class Menu extends GenericPortlet {
public void init() {
viewTemplate = getInitParameter("view-template");
}
public void doView(
RenderRequest renderRequest, RenderResponse renderResponse)
throws IOException, PortletException {
include(viewTemplate, renderRequest, renderResponse);
}
protected void include(
String path, RenderRequest renderRequest,
RenderResponse renderResponse)
throws IOException, PortletException {
PortletRequestDispatcher portletRequestDispatcher =
getPortletContext().getRequestDispatcher(path);
if (portletRequestDispatcher == null) {
_log.error(path + " is not a valid include");
}
else {
portletRequestDispatcher.include(renderRequest, renderResponse);
}
}
protected String viewTemplate;
private static Log _log = LogFactoryUtil.getLog(Menu.class);
/**
* Custom methods
* @throws IOException
*/
@Override
public void serveResource(ResourceRequest resourceRequest,
ResourceResponse resourceResponse) throws IOException,
PortletException {
System.out.println("this will not print");
PrintWriter out = resourceResponse.getWriter();
out.println("This is sample Text");
out.flush();
super.serveResource(resourceRequest, resourceResponse);
}
@ProcessAction(name="saveData")
public void saveData(ResourceRequest resourceRequest,ResourceResponse resourceResponse){
System.out.println("This won't print");
String name = resourceRequest.getParameter("name");
String emailId = resourceRequest.getParameter("email");
String contact = resourceRequest.getParameter("contact");
}
}
我希望我的 serveResource 函数使用 ajax 将 JSON 返回到我的.jsp文件。
抱歉,您的方法中存在许多错误:
- 资源URL管理GET http调用(您使用POST调用)
- 资源URL不是执行保存操作的最佳方式,您需要一个操作URL(返回json响应)
- 您的
AUI().use('aui-base','aui-io-request'
使用不是最佳方法 - 更好的选择是构建一个JSON Web服务来执行ajax调用:https://dev.liferay.com/develop/tutorials/-/knowledge_base/6-1/json-web-services
祝你好运