Java代码??

1. ??

Struts2返回XML格式 ?
1.struts.xml里面的配置package extends="struts-default" ?

Java代码??

1. <action?name="actionName" ?class ="bookTypeAction" ?method="methodName" ?>??
2. ????????<result?name="xmlMessage" ?type="plaintext" ></result>??
3. </action>??

2.Action里面的方法 ?

Java代码??

1. public ?void ?xxxMethod()?throws ?IOException{?????
2. ?????HttpServletResponse?response?=?ServletActionContext.getResponse();?????????
3. ?????PrintWriter?out?=?response.getWriter();?????????
4. ?????response.setContentType("application/xml;charset=UTF-8" );??
5. ?????out.write("XML文档" );??
6. }??

Struts2返回Json格式 ?
1.下载jsonplugin-0.7.jar包 ?
如果用JSONObject把Object转成JSON字符串的话需要下载下面的包 ?
?? commons-beanutils-1.7.0.jar ?
?? json-lib-2.2.1-jdk15.jar ?
?? ezmorph-1.0.4.jar ?
2.Action里面的方法 ?
? ?

Java代码??

1. HttpServletRequest?request?=ServletActionContext.getRequest();??
2. HttpServletResponse?response?=?ServletActionContext.getResponse();??
3. ??
4. int ?bookTypeId?=?Integer.parseInt(request.getParameter("bookTypeId" ));??
5. int ?num?=?admimService.getDeleteBookTypeCond(bookTypeId);??
6. response.setContentType(ContentType_JSON);??
7. if (num?==?0 ){??
8. ??boolean ?isSuccess?=?true ;??
9. ??int ?x?=?admimService.deleteBookType(bookTypeId);??
10. ??//这是产生简单的json的方法 ??
11. ??response.getWriter().write("{success:" +isSuccess+",num:" +num+"}" );??
12. }else {??
13. ?response.getWriter().write("{success:false,num:" +num+"}" );???
14. }??

如果要把一个对象的实例转成json,建议用JSONObject, ?
如： ?

Java代码??

1. import ?net.sf.json.JSONArray;??
2. import ?net.sf.json.JSONObject;??
3. ??
4. ...??
5. ...??
6. ...??
7. /** ?
8. ?*?通过bean生成JSON数据 ?
9. ?*?@param?bean?bean对象 ?
10. ?*?@return?生成的JSON数据 ?
11. */ ??
12. public ?static ?String?getJsonFromBean(Object?bean){??
13. ?try {??
14. ??????JSONObject?JsonObject?=?JSONObject.fromObject(bean);??
15. ??????return ?JsonObject.toString();??
16. ?}catch (Exception?e){??
17. ???e.printStackTrace();??
18. ?}??
19. ?return ?null ;??
20. }?