使用vue+elementui+idea方式编写【批量删除】功能出现的问题及解决

红太狼 2024-03-24 15:04 101阅读 0赞

## 1、解析符号时出错 ##

后端报错：Invalid character found in the request target \[/user/delBatch?ids\[\]=1639951158050992177&ids\[\]=163995

前端报错：has been blocked by CORS policy: Response to preflight request doesn‘t pass access controlcheck

![20210512100603261.png][]

解决：在启动类中添加

//用于更改tomcat的非法字符限制。去掉一些括号双引号的限制
        @Bean
        public ConfigurableServletWebServerFactory webServerFactory() {
            TomcatServletWebServerFactory factory = new TomcatServletWebServerFactory();
            factory.addConnectorCustomizers((TomcatConnectorCustomizer) connector -> connector.setProperty("relaxedQueryChars", "|{}[]\\"));
            return factory;
        }

![539a05e2e1444cc2a7f65ba5209ea556.png][]

参考文档：[(22条消息) 【java请求目标中发现无效字符】报错：Invalid character found in the request target处理办法\_接口写好了吗的博客-CSDN博客][22_ _java_Invalid character found in the request target_-CSDN]

[(22条消息) java.lang.IllegalArgumentException: Invalid character found in the request target. The valid charact\_醋酸菌HaC的博客-CSDN博客][22_ java.lang.IllegalArgumentException_ Invalid character found in the request target. The valid charact_HaC_-CSDN]

## 2、请求500失败 ##

后端报错：java.lang.IllegalStateException: No primary or single unique constructor found for interface java.util.List

前端报错：

![60fc991838514d18ab477dd3f026b5fc.png][] 解决：controller层的接口入参加一个requestbody接收

![2cdaefc740074df99a584365c69cf905.png][]

参考文档：

[(22条消息) 请求500失败-No primary or single unique constructor found for interface xxx\_BB-X的博客-CSDN博客][22_ _500_-No primary or single unique constructor found for interface xxx_BB-X_-CSDN]

## 3、请求后端接口出错400 ##

后端报错： JSON parse error: Cannot deserialize value of type \`java.util.ArrayList<jav

解析：前端vue中访问接口中的传参有问题

解决：将data内的括号去掉，要结合自己的后端接口来对应着改

![d709f511e28343bab085d1134ae37b13.png][]

参考文档：

[前端传数组，后端怎么接收的问题\_前端\_为了我的架构师-DevPress官方社区 (csdn.net)][-DevPress_ _csdn.net]

[(22条消息) “JSON parse error: Cannot deserialize value of type \`java.util.ArrayList＜XXX＞\` from Object value ...\_小黑孩.的博客-CSDN博客][22_ _JSON parse error_ Cannot deserialize value of type _java.util.ArrayList_XXX_ from Object value ..._._-CSDN]

[20210512100603261.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/24/8cb269ffb1d44572afdbcc40ef20618e.png
[539a05e2e1444cc2a7f65ba5209ea556.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/24/9b26d2febe134c738a55c80918a171e8.png
[22_ _java_Invalid character found in the request target_-CSDN]: https://blog.csdn.net/seeeeeeeeeee/article/details/124724396
[22_ java.lang.IllegalArgumentException_ Invalid character found in the request target. The valid charact_HaC_-CSDN]: https://blog.csdn.net/yudianxiaoxiao/article/details/113538180
[60fc991838514d18ab477dd3f026b5fc.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/24/df357e44ece5428188dde217f681b8bc.png
[2cdaefc740074df99a584365c69cf905.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/24/74b2fa7dd723474f96939a1ea27e0891.png
[22_ _500_-No primary or single unique constructor found for interface xxx_BB-X_-CSDN]: https://blog.csdn.net/weixin_51091560/article/details/128289165
[d709f511e28343bab085d1134ae37b13.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/24/03294cf83afb4c599660caa810018383.png
[-DevPress_ _csdn.net]: https://huaweicloud.csdn.net/638ee145dacf622b8df8d5dc.html?spm=1001.2101.3001.6661.1&utm_medium=distribute.pc_relevant_t0.none-task-blog-2~default~OPENSEARCH~activity-1-120833459-blog-129923673.235%5Ev27%5Epc_relevant_multi_platform_whitelistv3&depth_1-utm_source=distribute.pc_relevant_t0.none-task-blog-2~default~OPENSEARCH~activity-1-120833459-blog-129923673.235%5Ev27%5Epc_relevant_multi_platform_whitelistv3&utm_relevant_index=1
[22_ _JSON parse error_ Cannot deserialize value of type _java.util.ArrayList_XXX_ from Object value ..._._-CSDN]: https://blog.csdn.net/xiaoheihai666/article/details/127817980