原创 Required String parameter 'classId' is not present
可能使用了註解@RequestParam(value = “classId”),可是前端又沒有傳入classId這個參數導致的錯誤 使用了註解@RequestParam來接收參數，那麼就一定要傳此參數到後臺
2020-06-14 12:36:19
原创 pgsql -- update
工具：mybatis+pgsql 詳見pgsql官方文檔 案例1 dao層 void update(User user); sql <update id = "update" parameterType = "com.test
2020-06-14 12:36:19
原创 pgsql -- concat_ws
工具：mybatis+pgsql 詳見： pgsql官方文檔 含義: 使用指定分隔符拼接字符串 案例 表數據 id username sex address depId status 1 張三 男
2020-06-14 12:36:19
原创 Parameter 'collection' not found
nested exception is org.apache.ibatis.binding.BindingException: Parameter çollection'not found. Available parameter
2020-06-14 12:36:19
原创 java 獲取集合中重複的元素
代碼塊 package com.test.boke; import java.util.ArrayList; import java.util.List; import java.util.stream.Collectors;
2020-06-14 12:36:19
原创 java 獲取字符串最後一個字符
代碼塊 package com.test.boke; public class StringTest { public static void main(String[] args) { String str = "中國l
2020-06-14 12:36:19
原创 java 去除字符串中的特殊字符
代碼塊 package com.test.boke; public class StringTest { public static void main(String[] args) { //1. 可以在中括號內加上任何想
2020-06-14 12:36:19
原创 Inspection info: Under Construction
Mybatis-config.xml文件報錯：Inspection info: Under Construction 解決：由於之前引入了mybatis Plugin插件，最近插件出錯，導致xml文件解析失敗，刪除插件後，重啓id
2020-05-17 12:00:51
原创 Required request body is missing.
org.springframework.http.converter.HttpMessageNotReadableException:Required request body is missing. 錯誤原因：接口方法定義使用了
2020-05-17 12:00:51
原创 error[42883]：operator does not exist:character varying = integer
錯誤[42883]：operator does not exist:character varying = integer 修復建議：no operator matches the given name and argument
2020-05-17 12:00:51
原创 Maven打包失敗，報錯：Failed to collect dependencies...
Failed to execute goal on ...: Could not resolve dependencies for project xxx.xxx.xxx.xx:jar:...: Failed to collect
2020-05-17 12:00:51
原创 Failed to find …….. was cached in the local repository,resolution will not be reattempted……
[ERROR]Failed to execute goal on project 子項目1: Could not resolve dependencies for project com.example.demo:xxxx:jar
2020-05-17 12:00:51