小弟刚接触webwork，遇到一个关于使用下拉框问题，弄了很久极端郁闷，请大家帮忙解答，谢谢，在线等！
jsp里这样写的：
<ww:select label= "省份 " list= "provinces " name= "province " listKey= "key " listValue= "value "/>
运行jsp后就报：java.lang.RuntimeException: tag select, field list: You must specify a collection/array/map/enumeration/iterator. Example: people or people.{name}，而且页面显示不出下拉框，请大家帮忙看一下，感激不尽！
对应的action是：
public class GreetingAction2Version extends ActionSupport {

String greeting;

String province;

List provinces = new ArrayList();

public GreetingAction2Version() {
provinces.add(new ProvinceCls( "key1 ", "value1 "));
provinces.add(new ProvinceCls( "key2 ", "value2 "));
provinces.add(new ProvinceCls( "key3 ", "value3 "));
provinces.add(new ProvinceCls( "key4 ", "value4 "));
}


public String getProvince() {
return province;
}


public void setProvince(String province) {
this.province = province;
}


public List getProvinces() {
return provinces;
}


public void setProvinces(List provinces) {
this.provinces = provinces;
}


public String getGreeting() {
return greeting;
}



public String execute() throws Exception {
……
}

//内部类
public static class ProvinceCls {
String key;
String value;

public ProvinceCls(String key, String value) {
this.key = key;
this.value = value;
}

public String getKey() {
return key;
}

public String getValue() {
return value;
}

}

}


[解决办法]
我看了一下文档，发现你的标签部分没有错误。
所以，建议你在显示标签之前，答应provinces，看看它是不是空？

up
[解决办法]
你用html标签试一下