struts2拦截器转化敏感字符

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struts.xml <?xml version="1.0" encoding="UTF-8" ?><!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd"><struts>    <package name="default" namespace="/" extends="struts-default">       <interceptors>         <interceptor name="message" class="com.sxt.interceptors.MessageInterceptor"/>       </interceptors>      <action name="msg" class="com.sxt.action.MessageAction">       <result>MyJsp.jsp</result>       <interceptor-ref name="message" />       <interceptor-ref name="defaultStack"/>      </action>    </package></struts>  MessageAction.java   package action;   import com.opensymphony.xwork2.ActionSupport;public class MessageAction extends ActionSupport {   private String msg;public String getMsg() {return msg;}public void setMsg(String msg) {this.msg = msg;}@Overridepublic String execute() throws Exception {return SUCCESS;}}MessageInterceptor.java  package interceptors;import java.util.HashMap;import java.util.Iterator;import java.util.Map;import java.util.Set;import java.util.Map.Entry;import com.opensymphony.xwork2.Action;import com.opensymphony.xwork2.ActionContext;import com.opensymphony.xwork2.ActionInvocation;import com.opensymphony.xwork2.interceptor.AbstractInterceptor;import com.sun.xml.internal.stream.Entity;import com.sxt.action.MessageAction;public class MessageInterceptor extends AbstractInterceptor {//本文只使用了一个参数msg@Overridepublic String intercept(ActionInvocation arg0) throws Exception {   String msg = "";Map<String, Object> map = ActionContext.getContext().getParameters();Iterator  it= map.entrySet().iterator(); //下面代码为：取出每一个参数while( it.hasNext()){System.out.println("-----------");Map.Entry<String, Object> mapentry= (Map.Entry<String, Object>) it.next(); // System.out.println(((String[])mapentry.getValue())[0]);  msg = ((String[])mapentry.getValue())[0];}System.out.println(msg);       //下面代码也可获取指定参数

              //  Map map = arg0.getInvocationContext().getParameters();<span style="white-space:pre"></span>     //<span style="white-space:pre"></span>String[] message = (String[]) map.get("msg");            //  msg = message[0];

String m =msg.replaceAll("TMD", "***");System.out.println(m);//将转换后的msg放入参数map    Map params = new HashMap();params.put("msg", m);arg0.getInvocationContext().setParameters(params);

              //或<span style="font-family: 微软雅黑, 'MS Sans Serif', sans-serif; font-size: 13px;">arg0.getInvocationContext().getParameters().put("msg",m);</span>

return arg0.invoke();}}index.jsp  //使用ajax标签局部刷新显示结果  <%@ page language="java" import="java.util.*" pageEncoding="gbk"%><%@ taglib prefix="sx" uri="/struts-dojo-tags"%><html>   <sx:head/>  <body>       <form action="msg" >           请输入:<input type="text" name="msg"/>          <sx:submit targets="div1" value="提交"/>    </form>        <!-- sx:submit targets="div1"会将请求结果返回到div1 -->        <sx:div id="div1"></sx:div>              </body></html>MyJsp.jsp <%@ page language="java" import="java.util.*" pageEncoding="gbk"%><html>    <body>   输入的内容为：${msg}  </body></html>

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