{'totalProperty': 100,'root': [{"id":"1","name":"hu1id":"98","name":"hu98",},{"id":"99","name":"hu99",},{"id":"100","name":"hu100",}]}我EXT返回的数据是这样的格式我栏EXT2.0的API，没错啊可是网页就是报invalid label的错

{'totalProperty': 100,'root': [{"id":"1","name":"hu1id":"98","name":"hu98",},{"id":"99","name":"hu99",},{"id":"100","name":"hu100",}]} 怎么有2个name

Are you using ScriptTagProxy instead off HttpProxy? Try tha last one, and i think your result will be different.http://extjs.com/forum/archive/index.php/t-6018.html

错在这里{"id":"1","name":"hu1id":"98","name":"hu98",}写的格式错了

很明显，往ext传的JSON对象格式不统一。
{"id":"1","name":"hu1id":"98","name":"hu98",}
{"id":"99","name":"hu99",}