Eclipse + Struts + Ajax

Last Update:2018-12-04 Source: Internet

Author: User

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Page: example. jsp
<% @ Page Language = "Java" Import = "Java. util. *" pageencoding = "GBK" %>
<%
String Path = request. getcontextpath ();
String basepath = request. getscheme () + ": //" + request. getservername () + ":" + request. getserverport () + path + "/";
%>

<! Doctype HTML public "-// W3C // dtd html 4.01 transitional // en">
<HTML>
<Head>
<Base href = "<% = basepath %>">
<Title> my JSP 'example. jsp 'starting page </title>
<Meta http-equiv = "Pragma" content = "no-Cache">
<Meta http-equiv = "cache-control" content = "no-Cache">
<Meta http-equiv = "expires" content = "0">
<Meta http-equiv = "keywords" content = "keyword1, keyword2, keyword3">
<Meta http-equiv = "Description" content = "this is my page">
<! --
<LINK rel = "stylesheet" type = "text/CSS" href = "styles.css">
-->
<SCRIPT>

VaR req;
VaR which;
Function retrieveurl (URL ){
If (window. XMLHttpRequest) {// non-ie browsers
Req = new XMLHttpRequest ();
Req. onreadystatechange = processstatechange;
Try {
Req. Open ("get", URL, true );
} Catch (e ){
Alert ('object creation failed ');
}
Req. Send (null );
} Else if (window. activexobject) {// IE
Req = new activexobject ("Microsoft. XMLHTTP ");
If (req ){
Req. onreadystatechange = processstatechange;
Req. Open ("get", URL, true );
Req. Send (null );
}
}
}
Function processstatechange (){
If (req. readystate = 4) {// complete
If (req. Status = 200) {// OK response
Document. getelementbyid ("test"). innerhtml = Req. responsetext;
} Else {
Alert ("problem:" + Req. statustext );
}
}
}
</SCRIPT>
</Head>
<Body onload = "retrieveurl ('/test/example. Do')">
<Dir id = "test"> </dir>
</Body>
</Html>
Action part: exampleaction. Java
/*
* Generated by myeclipse struts
* Template path: templates/Java/javaclass. VTL
*/
Package com. SBT. Struts. Action;

Import java. Io. ioexception;
Import java. Io. printwriter;

Import javax. servlet. http. httpservletrequest;
Import javax. servlet. http. httpservletresponse;

Import org. Apache. Struts. action. Action;
Import org. Apache. Struts. Action. actionform;
Import org. Apache. Struts. Action. actionforward;
Import org. Apache. Struts. Action. actionmapping;

/**
* Myeclipse struts
* Creation date: 01-11-2008
*
* XDoclet definition:
* @ Struts. Action validate = "true"
*/
Public class exampleaction extends action {
/*
* Generated Methods
*/

/**
* Method Execute
* @ Param Mapping
* @ Param form
* @ Param request
* @ Param response
* @ Return actionforward
* @ Throws ioexception
*/
Public actionforward execute (actionmapping mapping, actionform form,
Httpservletrequest request, httpservletresponse response) throws ioexception {
Response. setcontenttype ("text/html; charset = GBK ");
Printwriter out = response. getwriter ();
Out. println ("Hello world! ");
Out. Flush ();
Return NULL;
}
}
Config part: struts-config.xml

<? XML version = "1.0" encoding = "UTF-8"?>
<! Doctype Struts-config public "-// Apache Software Foundation // DTD struts configuration 1.1 //" http://jakarta.apache.org/struts/dtds/struts-config_1_1.dtd ">

<Struts-config>
<Data-sources/>
<Form-beans/>
<Global-exceptions/>
<Global-forwards/>
<Action-mappings>
<Action Path = "/example" type = "com. SBT. Struts. Action. exampleaction"/>

</Action-mappings>

<Message-resources parameter = "com. SBT. Struts. applicationresources"/>
</Struts-config>

Web Part: Web. xml

<? XML version = "1.0" encoding = "UTF-8"?>
<Web-app xmlns = "http://java.sun.com/xml/ns/j2ee" xmlns: xsi = "http://www.w3.org/2001/XMLSchema-instance" version = "2.4" xsi: schemalocation = "http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<Servlet>
<Servlet-Name> action </servlet-Name>
<Servlet-class> org. Apache. Struts. Action. actionservlet </servlet-class>
<Init-param>
<Param-Name> config </param-Name>
<Param-value>/WEB-INF/struts-config.xml </param-value>
</Init-param>
<Init-param>
<Param-Name> debug </param-Name>
<Param-value> 3 </param-value>
</Init-param>
<Init-param>
<Param-Name> detail </param-Name>
<Param-value> 3 </param-value>
</Init-param>
<Load-on-startup> 0 </load-on-startup>
</Servlet>
<Servlet-mapping>
<Servlet-Name> action </servlet-Name>
<URL-pattern> *. DO </url-pattern>
</Servlet-mapping>
</Web-app>

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