【场景一】使用普元封装的上传附件功能，上传附件超过大小限制；

解决方案：

在apps_config\default\config\user-config.xml中修改上传文件大小（红色字体）

 <group name="FileUpload">
            <configValue key="TempDir">upload</configValue>
            <configValue key="MaxSize">104857600</configValue>
            <configValue key="InMemorySize">10240</configValue>
            <!--files with specified ext names are not accespted when uploading  -->
            <configValue key="Exclude">exe,java,jsp,html,htm,class,jar</configValue>
</group> 

【场景二】自行实现的文件上传功能，没有使用普元封装的上传文件功能，上传文件大小不受user-config.xml限制

例如：

1、基于EOS Platform7.5 产品中apache附件上传jar包，实现附件上传功能，执行List<FileItem> list = diskFileUpload.parseRequest(request);时报错：

org.apache.commons.fileupload.FileUploadBase$SizeLimitExceededException: the request was rejected because its size (1625721886) exceeds the configured maximum (1073741824)
 at org.apache.commons.fileupload.FileUploadBase.parseRequest(FileUploadBase.java:310)
 at org.apache.commons.fileupload.FileUploadBase.parseRequest(FileUploadBase.java:268)
 at org.apache.jsp.mfg.MobileDataUpload_jsp._jspService(MobileDataUpload_jsp.java:139)
 at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
 at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432)
 at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
 at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)

页面上传关键代码：

<%
    String dataID = "";
    String activityDefID = "";
    File file = null;
    String fileData = "";
    String basePath = "d:/mobile_uploadfiles/";
    String catalog_key = "yyyyMM";
    String file_key  = "yyyyMMddHHmmssSSS";
    String catalog = "";
    String fileSaveName = "";   //文件保存名称
    String filePath = "";   //文件保存路径
    String fileName = "";   //文件名称
    String fileExt = "";   //文件后缀
    long fileSize = -1;    //文件大小
    try{
        DiskFileUpload diskFileUpload = new DiskFileUpload();
        diskFileUpload.setHeaderEncoding("GBK");
        diskFileUpload.setSizeMax(5*1024*1024*1024);
        //下面一句报错。。。。
        List<FileItem> list = diskFileUpload.parseRequest(request);//该句报错。
....

客户项目级解决方案，供参考：

定位到附件上传的依赖的jar包限制了int类型为2g，导致了上述错误，项目中将Platform7.5里的commons-fileupload、commons-httpclient、commons-io、commons-lang的jar包升级成了如下版本后，没再出现上述问题，升级后的jar包：附件上传相关jar包.zip

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