这篇随笔算是接上篇的数据请求返回,上一篇关于分页用的返回的数据形式是json,http://www.cnblogs.com/tele-share/p/7192206.html这次主要探讨ajax从struts接收html和io流的数据形式.
方式一:接收html格式的数据
jsp页面
1 <!-- ajax从struts请求拼接完成的html --> 2 ??????????<script type="text/javascript"> 3 ??????????????var url = "${pageContext.request.contextPath}/test?time=" + new Date().getTime(); 4 ??????????????$("#findAjax").click(function() { 5 ??????????????????$.ajax({ 6 ????????????????????????url:url, 7 ????????????????????????type:"GET", 8 ????????????????????????dataType:"html", 9 ????????????????????????data:null,10 ????????????????????????aysnc:false,11 ????????????????????????success:function(backdata) {12 ???????????????????????????// alert(backdata); 13 ????????????????????????????$("body").append(backdata);14 ????????????????????????},15 ????????????????????????error:function(ajax) {16 ????????????????????????????alert(ajax.readyState);17 ????????????????????????}18 ????????????????????})19 ??????????????}) 20 ??????????</script>21 ??????????后台struts方法
1 public String execute() throws Exception { 2 ????????????System.out.println("TestAction.execute()"); 3 ????????StringBuffer sb = new StringBuffer(); 4 ????????sb.append("<table border=‘2px‘>").append("<tr><td>编号</td><td>姓名</td></tr>"); 5 ????????sb.append("<tr><td>1</td><td>wyc</td></tr>"); 6 ????????sb.append("<tr><td>2</td><td>tele</td></tr>"); 7 ????????sb.append("<tr><td>3</td><td>fifth</td></tr>"); 8 ????????sb.append("</table>"); 9 ????????HttpServletResponse response = ServletActionContext.getResponse();10 ????????response.setContentType("text/html;charset=utf-8");11 ????????PrintWriter pw = response.getWriter();12 ????????pw.write(sb.toString());13 ????????pw.flush();14 ????????pw.close();15 ????????System.out.println(sb);16 ????????return null;17 ????} ???方式二:以流的方式
jsp页面
1 <script type="text/javascript"> 2 ??????????????var url = "${pageContext.request.contextPath}/test2?time=" + new Date().getTime(); 3 ??????????????$("#findAjax").click(function() { 4 ??????????????????$.ajax({ 5 ????????????????????????url:url, 6 ????????????????????????type:"GET", 7 ????????????????????????dataType:"html", 8 ????????????????????????data:null, 9 ????????????????????????aysnc:false,10 ????????????????????????success:function(backdata) {11 ????????????????????????????alert(backdata);12 ????????????????????????????$("body").append(backdata);13 ????????????????????????},14 ????????????????????????error:function(ajax) {15 ????????????????????????????alert(ajax.readyState);16 ????????????????????????}17 ????????????????????})18 ??????????????})19 ??????????</script>20 ??后台struts方法,注意中文乱码问题
1 private InputStream is; 2 ????public InputStream getIs() { 3 ????????return is; 4 ????} 5 ?????6 ????public String execute2() { 7 ????????StringBuffer sb = new StringBuffer(); 8 ????????sb.append("<table border=‘2px‘>").append("<tr><td>编号</td><td>姓名</td></tr>"); 9 ????????sb.append("<tr><td>1</td><td>wyc</td></tr>");10 ????????sb.append("<tr><td>2</td><td>tele</td></tr>");11 ????????sb.append("<tr><td>3</td><td>fifth</td></tr>");12 ????????sb.append("</table>");13 ????????String string = sb.toString();14 ????????try {15 ????????????is = new ByteArrayInputStream(string.getBytes("utf-8"));16 ????????} catch (UnsupportedEncodingException e) {17 ????????????// TODO Auto-generated catch block18 ????????????e.printStackTrace();19 ????????}20 ????????21 ????????return "OK";22 ????}配置文件(本可以用通配符的方式来写,但为了清晰采用这种方式,虽然只有一个action)
1 <!-- test --> 2 ????<package name="xxx" extends="struts-default"> 3 ????<!-- 依赖servlet Api返回数据 --> 4 ????????<action name="test" class="com.itcast.action.TestAction" method="execute"> 5 ????????</action> 6 ?????????7 ????????<!-- 使用流的方式返回数据,注意type=stream --> 8 ????????<action name="test2" class="com.itcast.action.TestAction" method="execute2"> 9 ????????<result name="OK" type="stream">10 ????????????<param name="contentType">text/html;charset = utf-8</param>11 ????????????<param name="inputName">is</param>12 ????????</result>13 ????????</action>14 ????</package>
总结:第一种方式依赖servlet api,但全部在服务器端完成拼接,客户端得到数据直接插入即可.第二种则是java流的方式,可以用于生成图片传输至客户端,当然还有json的形式,看情况选择使用哪种方式
ajax从struts2请求数据的返回形式
原文地址：http://www.cnblogs.com/tele-share/p/7487742.html