我正在尝试根据第一个下拉（状态）选择在struts2中为州，城市Populate第二个下拉列表（城市）实现下拉。我正在使用struts2 tiles。
我想返回类型json，一切顺利，直到我必须返回到相同的jsp页面，我已经调用了该动作。
这是我的JSP代码
<%@ taglib prefix="s" uri="/struts-tags"%>
<html>
<head>
<title>AJAX in Struts 2 using JSON and jQuery</title>
<script src="js/jquery-1.8.2.js" type="text/javascript"></script>
<script>
$(document).ready(function() {
$('#state').change(function(event) {
var state = $("select#state").val();
$.getJSON('ajaxAction', {
stateName : state
}, function(jsonResponse) {
$('#ajaxResponse').text(jsonResponse.dummyMsg);
var select = $('#city');
select.find('option').remove();
$.each(jsonResponse.stateMap, function(key, value) {
$('<option>').val(key).text(value).appendTo(select);
});
});
});
});
</script>
</head>
<body>
<h3>AJAX calls to Struts 2 using JSON and jQuery</h3>
<s:select name="state" id="state" list="stateList"
headerKey="0" headerValue="--select--" label="Select state" theme="simple" />
<br />
<br />
<s:select id="city" name="city" list="{'Select city'}"
label="Select city" theme="simple" />
<br />
<br />
<div id="ajaxResponse"></div>
</body>
</html>
struts.xml中
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">
<struts>
<package name="default" extends="struts-default,json-default">
<result-types>
<result-type name="tiles"
class="org.apache.struts2.views.tiles.TilesResult" />
<result-type name="json" class="com.googlecode.jsonplugin.JSONResult" />
</result-types>
<action name="*Link" method="{1}"
class="com.rooh.agriculture.LayoutRedirect">
<result name="welcome" type="tiles">welcome</result>
<result name="page1" type="tiles">page1</result>
<result name="page3" type="tiles">page3</result>
</action>
<action name="*Link" method="{1}"
class="com.rooh.agriculture.DisplayListData">
<result name="welcome" type="tiles">welcome</result>
<result name="page1" type="tiles">page1</result>
<result name="page2" type="tiles">page2</result>
<result name="page3" type="tiles">page3</result>
<result name="page4" type="tiles">page4</result>
</action>
<action name="Link*" method="{1}"
class="com.rooh.agriculture.SendEmailAction">
<result name="page5" type="tiles">page5</result>
</action>
<action name="ajaxAction" class="com.rooh.agriculture.AjaxJsonAction">
<result type="json">/page/page2.jsp</result>
</action>
</package>
</struts>
动作类
package com.rooh.agriculture;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.util.ArrayList;
import java.util.List;
import com.opensymphony.xwork2.Action;
public class AjaxJsonAction implements Action {
private List<String> stateList, cityList;
// Parameter for Jquery
private String stateName;
public String execute() {
System.out.println("statename = " + getStateName());
stateList = new ArrayList<String>();
cityList = new ArrayList<String>();
try {
System.out.println("Checkpoint 1");
Connectivity con1 = new Connectivity();
Connection con = con1.getConnection();
PreparedStatement ps = con
.prepareStatement("SELECT state,city FROM rooh_agriculture_v1_db.rooh_agriculture_city_state where state=?");
ps.setString(1, getStateName());
ResultSet rs = ps.executeQuery();
while (rs.next()) {
String ListResult = rs.getString(1);
String ListResult1 = rs.getString(2);
System.out.println("the List Result is " + ListResult);
System.out.println("the List Result is " + ListResult1);
stateList.add(ListResult);
//cityList.add(ListResult1);
System.out.println("This Is a state List = " + cityList);
}
con.close();
} catch (Exception e) {
e.printStackTrace();
}
return "success";
}
public List<String> getStateList() {
return stateList;
}
public void setStateList(List<String> stateList) {
this.stateList = stateList;
}
public List<String> getCityList() {
return cityList;
}
public void setCityList(List<String> cityList) {
this.cityList = cityList;
}
public String getStateName() {
return stateName;
}
public void setStateName(String stateName) {
this.stateName = stateName;
}
}
错误 -
Aug 06, 2016 4:46:51 PM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet [default] in context with path [/RoohAgricultureProject] threw exception [Filter execution threw an exception] with root cause
java.lang.NoClassDefFoundError: com/opensymphony/xwork2/util/TextUtils
at com.googlecode.jsonplugin.JSONUtil.writeJSONToResponse(JSONUtil.java:197)
at com.googlecode.jsonplugin.JSONResult.writeToResponse(JSONResult.java:192)
at com.googlecode.jsonplugin.JSONResult.execute(JSONResult.java:182)
at com.opensymphony.xwork2.DefaultActionInvocation.executeResult(DefaultActionInvocation.java:367)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:271)
at org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:256)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:242)
at com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:176)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:242)
at com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:265)
at org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:68)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:242)
at com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:138)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:242)
at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:238)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:242)
at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:238)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:242)
at com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:191)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:242)
at org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:73)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:242)
at org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:91)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:242)
at org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:252)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:242)
at com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:100)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:242)
at com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:141)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:242)
at com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:145)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:242)
at com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:171)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:242)
at com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:176)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:242)
at org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:242)
at com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:193)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:242)
at com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:187)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:242)
at org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:54)
at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:544)
at org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:77)
at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:91)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:936)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1004)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:744)