ajax – 从XMLHttpRequest responseText获取纯文本
任何人都可以告诉我如何从
AJAX响应中提取Struts动作类返回的字符串?以下是我的代码片段:
JS电话: xmlhttp=new XMLHttpRequest(); xmlhttp.open('POST','getMessage.do',false); xmlhttp.setRequestHeader("Content-type","application/x-www-form-urlencoded"); xmlhttp.send(); alert(xmlhttp.responseText); 在struts.xml <action name="getMessage" class="SampleAction" method="getMessage"/> 行动 public String getMessage() { String msg = null; HttpSession hSession = this.request.getSession(false); if(null != hSession) { if(null != hSession.getAttribute("user")) { User user = (User) hSession.getAttribute("user"); if(null != user.account) { msg = user.account.getMessage(); //Sample message } } } return msg; } 当我打印响应文本(使用警报)时,它打印包含所有HTML信息的消息.实际消息以粗体突出显示 回复消息 html> head> title> Apache Tomcat / 5.0.28 – 错误报告/标题>样式>! – {font-family:Tahoma,Arial,sans-serif;颜色:白色;背景颜色:#525D76;字体大小:22px;} H2 {font-family:Tahoma,sans-serif; color:white; background-color:#525D76; font-size:16px;} H3 {font-family:Tahoma,sans-serif;颜色:白色;背景颜色:#525D76;字体大小:14px;} BODY {font-family:Tahoma,sans-serif;颜色:黑色;背景颜色:白色;} B {font-family:Tahoma,sans-serif;颜色:白色;背景颜色:#525D76;} P {font-family:Tahoma,sans-serif; background:white; color:black; font-size:12px;} A {颜色:黑色;} A.name {颜色:黑色;} HR {颜色:#525D76;} – > / style> / head> body>> HTTP状态404 – 没有为操作com.sample.SampleAction定义的结果$$EnhancerByCGLIB $$69b4e30e和结果示例messageHR size =“1”noshade =“noshade”> p> b> type / b> ;状态报告/ p> p> b>消息u>没有为动作com.sample.SampleAction定义的结果$$EnhancerByCGLIB $$69b4e30e和结果示例消息/ u> / p> p> b> description / b> u>请求的资源(没有为动作com.sample.SampleAction $$EnhancerByCGLIB $$69b4e30e和结果示例消息定义的结果)不可用./uu0026gt;/pu0026gt;HR size =“1”noshade =“noshade”> h3> Apache Tomcat / 5.0.28 / h3> / body> html> 解决方法
这样做是这样的..
AJAX CALL var xmlhttp; if (window.XMLHttpRequest) { // code for IE7+,Firefox,Chrome,Opera,Safari xmlhttp = new XMLHttpRequest(); } else { // code for IE6,IE5 xmlhttp = new ActiveXObject("Microsoft.XMLHTTP"); } xmlhttp.onreadystatechange = function() { if (xmlhttp.readyState == 4 && xmlhttp.status == 200) { alert(xmlhttp.responseText); } } xmlhttp.open("POST","URL"); xmlhttp.send(); 行动 public String execute() throws Exception { try{ PrintWriter outWriter = null; StringBuffer msg= new StringBuffer(""); HttpServletResponse httpResponse = ServletActionContext.getResponse(); try { outWriter = httpResponse.getWriter(); msg.append("String to be sent to View"); } } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } finally{ if(outWriter!=null){ httpResponse.setContentType("text/html"); outWriter.println(msg.toString()); outWriter.flush(); outWriter.close(); } } }catch (Exception e) { throw new Exception(e); } return null; } STRUTS.XML中定义的行动 <action name="MYActionName" class="MYActionNameBean" method="execute"> <result type="stream"> <param name="contentType">text/html</param> <param name="inputName">inputStream</param> </result> </action> (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |