关于 request type = put 在tomcat上如何配置

function getXMLHTTPRequest(){  
    if (XMLHttpRequest)    {  
        return new XMLHttpRequest();  
    } else {  
        try{  
            return new ActiveXObject('Msxml2.XMLHTTP');  
        }catch(e){  
            return new ActiveXObject('Microsoft.XMLHTTP');  
        }  
    }  
}  
var req = getXMLHTTPRequest();  
req.open('DELETE','http://localhost/test.jsp',false);  
req.send(null);  
document.write(req.responseText);