Posted content type isn't multipart/form-data

曾经终败给现在 2021-09-10 15:06 256阅读 0赞

在有文件上传的表单提交过程中，搞不好就会报`Posted content type isn't multipart/form-data`的错误。

## 解决办法 ##

1.  `enctype="multipart/form-data"`必须有这段代码。
2.  必须对该上传文件类型的表单进行封装，区分普通的表单上传。

/** * 带文件上传的ajax表单提交 * * @param {Object} * form * @param {Object} * callback */
    function iframeCallback(form, callback) { 
    	YUNM.debug("带文件上传处理");
    
    	var $form = $(form), $iframe = $("#callbackframe");
    
    	// 富文本编辑器
    	$("div.editor", $form).each(
    			function() { 
    				var $this = $(this);
    				var editor = "<input type='hidden' name='" + $this.attr("name") + "' value='"
    						+ $.base64.btoa($this.html()) + "' />";
    				$form.append(editor);
    			});
    
    	var data = $form.data('bootstrapValidator');
    	if (data) { 
    		if (!data.isValid()) { 
    			return false;
    		}
    	}
    
    	if ($iframe.size() == 0) { 
    		$iframe = $("<iframe id='callbackframe' name='callbackframe' src='about:blank' style='display:none'></iframe>")
    				.appendTo("body");
    	}
    	if (!form.ajax) { 
    		$form.append('<input type="hidden" name="ajax" value="1" />');
    	}
    	form.target = "callbackframe";
    
    	_iframeResponse($iframe[0], callback || YUNM.ajaxDone);
    }
    function _iframeResponse(iframe, callback) { 
    	var $iframe = $(iframe), $document = $(document);
    
    	$document.trigger("ajaxStart");
    
    	$iframe.bind("load", function(event) { 
    		$iframe.unbind("load");
    		$document.trigger("ajaxStop");
    
    		if (iframe.src == "javascript:'%3Chtml%3E%3C/html%3E';" || // For
    		// Safari
    		iframe.src == "javascript:'<html></html>';") {  // For FF, IE
    			return;
    		}
    
    		var doc = iframe.contentDocument || iframe.document;
    
    		// fixing Opera 9.26,10.00
    		if (doc.readyState && doc.readyState != 'complete')
    			return;
    		// fixing Opera 9.64
    		if (doc.body && doc.body.innerHTML == "false")
    			return;
    
    		var response;
    
    		if (doc.XMLDocument) { 
    			// response is a xml document Internet Explorer property
    			response = doc.XMLDocument;
    		} else if (doc.body) { 
    			try { 
    				response = $iframe.contents().find("body").text();
    				response = jQuery.parseJSON(response);
    			} catch (e) {  // response is html document or plain text
    				response = doc.body.innerHTML;
    			}
    		} else { 
    			// response is a xml document
    			response = doc;
    		}
    
    		callback(response);
    	});
    }

另外，关于jfinal的文件上传，请参照[jfinal文件上传][jfinal]

> 笑对现实的无奈，不能后退的时候，不再傍徨的时候，永远向前　路一直都在──陈奕迅《路一直都在》  
> ![20190430093935456.jpg][]

[jfinal]: http://blog.csdn.net/qing_gee/article/details/48657327
[20190430093935456.jpg]: /images/20210506/075a0e99c56b4a06949a19c4abe1291e.png