ResponseUtils

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package com.common.web.util;import java.io.IOException;import java.io.PrintWriter;import javax.servlet.http.HttpServletResponse;import org.apache.commons.io.IOUtils;import org.slf4j.Logger;import org.slf4j.LoggerFactory;/** * HttpServletResponse帮助类 */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);PrintWriter pWriter = null;try {pWriter = response.getWriter();pWriter.write(text);pWriter.flush();} catch (IOException e) {log.error(e.getMessage(), e);}finally{IOUtils.closeQuietly(pWriter);}}}
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