springmvc 接收数组list

蔚落 2021-12-14 17:53 394阅读 0赞

近期做项目时遇到springmvc 接收数组的问题；原来是这样写的，结果后台报错。提示string类型不能转位list类型。如下图 逻辑上是没问题的，但是错误的。

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2xvdmVib3NvbQ_size_16_color_FFFFFF_t_70][]

这样的方式，传到后台的数据是这样的：

\{"chenxu":"test","patience":"test","help":"test","suggesion":"","attitude":"test",  
**"appraises":\[\{"expertId":1,"score":6\},\{"expertId":1,"score":6\},\{"expertId":1,"score":6\}\]**\}

结果弄了半天，后来修改位这样的后就可以了正确方式如下图所示：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2xvdmVib3NvbQ_size_16_color_FFFFFF_t_70 1][]

如此，传递到后台的数据是这样的：

\{"chenxu":"test","patience":"test","help":"test","suggesion":"","attitude":"test",  
**"appraises\[0\].score":2,"appraises\[0\].expertId":8,  
"appraises\[1\].score":2,"appraises\[1\].expertId":8,  
"appraises\[2\].score":2,"appraises\[2\].expertId":8**\}

注意与上面的粗体不同之处；

后台controller如下：

![20190703191643802.png][]

javaBean类如下：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2xvdmVib3NvbQ_size_16_color_FFFFFF_t_70 2][]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2xvdmVib3NvbQ_size_16_color_FFFFFF_t_70]: /images/20211214/8ecb51d03a8e411ca09bb0960ad7e43f.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2xvdmVib3NvbQ_size_16_color_FFFFFF_t_70 1]: /images/20211214/ddd35a0d2cf149578b53c432542e3d84.png
[20190703191643802.png]: /images/20211214/9aa56bd477154aae924542d62a27294c.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2xvdmVib3NvbQ_size_16_color_FFFFFF_t_70 2]: /images/20211214/4a5fc38b2a9d48fab301294c1fdda640.png