在react项目中，我们增删改时，要获取到上个页面传过来的值，然后放在input里边
我们在用 getFieldDecorator 时候 设置 defaultValue 会报错
需要用 initialValue 来代替 defaultValue
所以正确的写法应该是
这里边的 title 是不需要加 { } 的
如果加了 { } ，页面显示会是这样
注意： 这是v3的版本
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