import java.io.IOException;
import javax.servlet.http.HttpServletResponse;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* HttpServletResponse帮助类
*
* @author liufang
*
*/
public final class ResponseUtils{
public static final Logger log = LoggerFactory
.getLogger(ResponseUtils.class);
/**
* 发送文本。使用UTF-8编码。
*
* @param response
* HttpServletResponse
* @param text
* 发送的字符串
*/
public static void renderText(HttpServletResponse response, String text) {
render(response, "text/plain;charset=UTF-8", text);
}
/**
* 发送json。使用UTF-8编码。
*
* @param response
* HttpServletResponse
* @param text
* 发送的字符串
*/
public static void renderJson(HttpServletResponse response, String text) {
render(response, "application/json;charset=UTF-8", text);
}
/**
* 发送xml。使用UTF-8编码。
*
* @param response
* HttpServletResponse
* @param text
* 发送的字符串
*/
public static void renderXml(HttpServletResponse response, String text) {
render(response, "text/xml;charset=UTF-8", text);
}
/**
* 发送内容。使用UTF-8编码。
*
* @param response
* @param contentType
* @param text
*/
public static void render(HttpServletResponse response, String contentType,
String text) {
response.setContentType(contentType);
response.setHeader("Pragma", "No-cache");
response.setHeader("Cache-Control", "no-cache");
response.setDateHeader("Expires", 0);
try {
response.getWriter().write(text);
} catch (IOException e) {
log.error(e.getMessage(), e);
}
}
}
使用方式:
@RequestMapping(value = "ajaxOrderStatus.do", method = RequestMethod.GET)
public void ajaxOrderStatus(String orderNo,String t,HttpServletRequest request, HttpServletResponse response,
ModelMap model) throws JSONException{
JSONObject json=new JSONObject();
json.put("status", AjaxResult.STATUS_FAILED);
json.put("msg", "查询失败,请稍候再试!");
json.put("payStatus", order.getPayStatus());
ResponseUtils.renderJson(response, json.toString());
}