整理代码来自论坛：http://bbs.wex5.com/forum.php?mod=viewthread&tid=105114

UI2/system/components/juetsp/attachment目录下的attachmentSimple.js文件进行修改，找到deleteFile  这个方法  然后修改成如下代码

deleteFile:function(storeFileName,ownerID){
	if(typeof storeFileName === "object"){
		var $object = storeFileName;
		storeFileName = $object.storeFileName.get();
		ownerID = this.getOwnerID($object);               
	}
	this.removeItemByStoreID(storeFileName,ownerID);
	var url = this.actionUrl + '?storeFileName=' + storeFileName + '&ownerID=' + ownerID + '&operateType=delete';
	url = require.toUrl(url);
	$.ajax({
		url:url,
		cache:false,
		async:false
	});
},

修改后保存，然后运行wex5目录下的tools/dist/dist.bat进行资源合并

修改完成JS文件后 再修改JAVA文件
打开baas/justep目录下的SimpleFileStore.java文件

找到doGet 修改为如下代码：

private static void doGet(HttpServletRequest request, HttpServletResponse response)
                        throws ServletException, IOException {
	getDocStoreDir(request);
	String operateType = request.getParameter("operateType");
	if("copy".equals(operateType)){
		copyFile(request,response);
	}else if("delete".equals(operateType)){
		deleteFile(request,response);
	}else{
		getFile(request,response);
	}
}

//然后增加一个deleteFile方法，复制粘贴如下代码：
private static void deleteFile(HttpServletRequest request,
	HttpServletResponse response) throws IOException {
	String ownerID = request.getParameter("ownerID");
	String storeFileName = request.getParameter("storeFileName");
	File file = new File(docStorePath + File.separator +ownerID + File.separator + storeFileName);
	file.delete();
}

修改完成后保存。
保存之后，一定要进行模型编译，重启Tomcat.

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