jquery.post()
jar包:
json-lib-2.2.3-jdk15.jar
struts2-json-plugin-2.3.4.1.jar(此包版本必须和Struts2版本对应,否则会抛错)
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js文件:
query-1.7.js和json2.js。
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页面导入js文件路径:
<scriptlanguage="javascript"src="scripts/javascript/jquery-1.7.js"></script>
<scriptlanguage="javascript"src="scripts/javascript/json2.js"></script>
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js函数:
functioncheckUserName(){
varurl='checkUserName';
varparams={
studentName:'1'
};
$.post(
url,
params,
functioncallback(json){
varresponseData=eval(json);
varresult=responseData.ckUserName;
if(result=="pass"){
$("h1").text("pass");
}else{
$("h1").text("npass");
}
},
'json'
);
}
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配置Struts2.xml:
<actionname="checkUserName"class="com.shenzhen.management.action.HelloWorldAjaxAction"method="checkUserName">
<resulttype="json">
<paramname="#root">ckUserName</param>
</result>
</action>
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Action方法(通过Spring注入Service接口抛异常,所以另外写了一个HelloWorldAjaxAction.java文件):
publicStringcheckUserName()
{
StringretStr="fail";
//通过Spring注入Service接口抛异常,未找到原因,现通过ApplicationContext获取bean,知道如何解决的大神请留言,谢谢!
ServletContextservletContext=ServletActionContext.getServletContext();
ApplicationContextapplicationContext=WebApplicationContextUtils.getRequiredWebApplicationContext(servletContext);
StudentServicestudentService=(StudentService)applicationContext.getBean("studentService");
try{
ckUsername="pass";
retStr="success";
}catch(Exceptione){
ckUsername="npass";
}
returnretStr;
}