HttpServletResponse ?工具类

package com.gta.yyyf.commons.utils;import java.io.IOException;import javax.servlet.http.HttpServletResponse;import org.slf4j.Logger;import org.slf4j.LoggerFactory;/** * HttpServletResponse帮助?? * ?* @author * ?*/public final class ResponseUtils {public static final Logger logger = 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);response.getWriter().flush();} catch (IOException e) {logger.error(e.getMessage(), e);}}}