关于使用springmvc时Failed to load resource: the server responded with a status of 400 (Bad Request)错误可能原因
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1，可能前端ajax提交的数据拼装错误
2，可能后端接收数据的数据类型不匹配 ，比如前端传送的数据时string,后端使用的是Integer数据类型接收，此时就会包以上错误
3，其他：网上说，可能是因为springmvc封装数据的实体对象没有无参构造函数（经本人验证，不存在这样的问题。如果实在没有办法解决此问题，可以试试第3条）
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- 关于使用springmvc时Failed to load resource: the server responded with a status of 400 (Bad Request)错误可能原因
- 关于使用springmvc时Failed to load resource: the server responded with a status of 400 (Bad Request)错误可能原因
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