struts2跟jquery,json的结合小结
struts2 跟jquery,json结合的一个小例子,小结下:

1 页面
<form action="" id="introForm"><label for="name">Enter Your Name</label>
<input name="name">
<input type="submit">
</form>

2 在ACTION部分
public class AjaxActions extends ActionSupport{

private String name;
private String greeting;
private List<string> countryList;
private Map<string,long> countryMap;

public String sayHi(){

greeting="HI " +name;

countryList=new ArrayList();
countryList.add("US");
countryList.add("UK");
countryList.add("Russia");

countryMap= new HashMap();
countryMap.put("US",1L);
countryMap.put("UK",2L);
countryMap.put("Russia",3L);

return ActionSupport.SUCCESS;
}

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}

public String getGreeting() {
return greeting;
}

public void setGreeting(String greeting) {
this.greeting = greeting;
}

public List<string> getCountryList() {
return countryList;
}

public void setCountryList(List<string> countryList) {
this.countryList = countryList;
}

public Map<string, long=""> getCountryMap() {
return countryMap;
}

}
3 配置
<struts>
<package extends="struts-default,json-default" name="ajax-package" namespace="/ajax">

<action method="sayHi" name="sayHi">
<result type="json">
</result></action>

</package>
</struts>

4 最后在前端把表单的信息送出,并且把后端的信息简单取出
这里只是通过FIREFOX的CONSOLE输出
,注意这里还演示了如何输出JSON格式的MAP和LIST
$(function(){

$("#introForm").submit(function(){

var formInput=$(this).serialize();

$.getJSON('ajax/sayHi.action', formInput,function(data) {

$('.result').html('' + data.greeting + '
');

$.each(data.countryList,function(index, value){
console.log("value " + value);
});

$.each(data.countryMap,function(key, value){
console.log("key "+ key + ", value " + value);
});
});

return false;

});