3.7.7版本生成但图片上传无法显示但已上传成功
版本：3.7.7预期：通过自动生成的代码，实现需求里面的某个字段【图片】的维护；
开发过程：自动生成代码【图片bug-1/bug-2】生成代码见图【bug-3】因为新的生成图片方式比这种还无法实现，所以才有支持旧版本的稳妥一些
bug现象：
1、online开发里面的地址cgAutoListController.do?list&id=whhc_item_jpg这里是可以进行图片的维护，并且跟踪到cgAutoListController.do的代码159行发现
String html = viewEngine.parseTemplate(TemplateUtil.getTempletPath(entity,0, TemplateUtil.TemplateType.LIST), paras);
这里的代码有下面的datagrid查询获取数据
http://127.0.0.1:8080/iwms/cgAutoListController.do?datagrid&configId=whhc_item_jpg&field=id,create_name,create_by,create_date,update_name,update_by,update_date,sys_org_code,sys_company_code,bpm_status,item_number,item_jpg
对于数据为【{"total":3,"rows":[{"item_jpg":null,"id":"402880c864c5ce7d0164c5ce7d930000","item_number":"test","bpm_status":"待提交","sys_org_code":"A01","create_date":"2018-07-23 14:23:21","create_by":"admin","create_name":"管理员","sys_company_code":"A01","update_name":"管理员","update_date":"2018-07-23 16:59:08","update_by":"admin"},{"item_jpg":"upload/files/20180724110951jVM1aaRO.jpg","id":"402880c864c5ed310164c5edaac10001","item_number":"erer","bpm_status":"待提交","sys_org_code":"A01","create_date":"2018-07-23 14:57:25","create_by":"admin","create_name":"管理员","sys_company_code":"A01","update_name":null,"update_date":null,"update_by":null},{"item_jpg":"upload/files/20180724110706Ls9S4kM8.jpg","id":"402880c864c5ef1d0164c5ef1df50000","item_number":"434","bpm_status":"待提交","sys_org_code":"A01","create_date":"2018-07-23 14:58:59","create_by":"admin","create_name":"管理员","sys_company_code":"A01","update_name":"管理员","update_date":"2018-07-24 11:07:06","update_by":"admin"}]}】
图片路径【"item_jpg":"upload/files/20180724110951jVM1aaRO.jpg",】
2、自动生成的代码标准datagrid里面无法获取item_jpg，实际的地址是【
实际上2种方式都上传成功，只是第二张代码生成代码部署的方式，datagrid查询的list数据有问题
详见【bug-4/bug-5】
类型错误，改成string类型 文件上传失败：Data truncation: Data too long for column 'item_jpg' at row 1
重新写datagrid，查询出图片path
不用那么麻烦，把长度设置长些就可以了
嗯。自己辛辛苦苦做好了，刚把测试图片上传的长度改成255，然后也可以了，折腾了一下 ok
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