如何从FW / 1中的操作返回JSON? [英] How do I return JSON from an action in FW/1?
本文介绍了如何从FW / 1中的操作返回JSON?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
FW / 1似乎面向返回完整的网页,如果需要JSON数据怎么办?典型的布局如下:
<!DOCTYPE HTML PUBLIC - // W3C // DTD HTML 4.01 Transitional // EN >
< html>
< head>
< title>用户经理< / title>
< link rel =stylesheettype =text / csshref =assets / css / styles.css/>
< / head>
< body>
< h1>用户经理< / h1>
< ul class =nav horizontal clear>
< li>< a href =index.cfm>首页< / a>< / li>
< li>< a href =index.cfm?action = user.listtitle =查看用户列表>用户< / a>< / li&
< li>< a href =index.cfm?action = user.formtitle =填写表单以添加新用户>添加用户< / a&
< li>< a href =index.cfm?reload = truetitle =重置框架缓存> Reload< / a>< / li>
< / ul>
< br />
< div id =primary>
< cfoutput>#body#< / cfoutput>
< / div>
< / div>
< / body>
< / html>
解决方案
我使用的代码覆盖 onMissingView()
Framework.cfc的方法。
我将我的响应包含在一个名为
rc的变量中。 然后在Application.cfc中使用类似于此代码的函数onMissingView(rc){
if(structKeyExists(rc,'json'){
var response = getPageContext()。getresponse()
response.setContentType('application / json');
return serializeJSON (rc.json);
}
else {
//我们需要这个触发有效的onMissignView错误
raiseException(FW1.viewNotFound,Unable to find a #request.action#action。,#request.missingView#'does not exist。);
}
}
/ pre>
我使用其他逻辑来做 cfdump
rc.json 当请求不是一个AJAX请求,但这是缩小到最小。
FW/1 seems to be oriented to returning complete web pages what if JSON data is needed? A typical layout looks like:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>User Manager</title>
<link rel="stylesheet" type="text/css" href="assets/css/styles.css" />
</head>
<body>
<h1>User Manager</h1>
<ul class="nav horizontal clear">
<li><a href="index.cfm">Home</a></li>
<li><a href="index.cfm?action=user.list" title="View the list of users">Users</a></li>
<li><a href="index.cfm?action=user.form" title="Fill out form to add new user">Add User</a></li>
<li><a href="index.cfm?reload=true" title="Resets framework cache">Reload</a></li>
</ul>
<br />
<div id="primary">
<cfoutput>#body#</cfoutput>
</div>
</div>
</body>
</html>
解决方案 I have used code that overrides the onMissingView()
method of Framework.cfc.
I wrap my response up in a variable named rc.json
then use code similar to this in my Application.cfc.
function onMissingView( rc ){
if( structKeyExists( rc, 'json' ){
var response = getPageContext().getresponse()
response.setContentType( 'application/json' );
return serializeJSON( rc.json );
}
else{
//we need this to fire off valid onMissignView error.
raiseException( "FW1.viewNotFound", "Unable to find a view for '#request.action#' action.", " '#request.missingView#' does not exist.");
}
}
I use other logic to do a cfdump
of rc.json
when request is not an AJAX request. But this is scaled down to bare minimum.
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