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IOException

IOException /* * Copyright (c) 1994, 2006, Oracle and/or its affiliates. All rights reserved. * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms. * */ package java.io; /** * Signals that an I/O exception of some sort has occurred

IDEA报错之元素类型为 "choose" 的内容必须匹配 "(when*,otherwise?)"。

IDEA报出的错误提示如下： Cause: org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: org.apache.ibatis.builder.BuilderException: Error creating document instance. Cause: org.xml.sax.SAXParseException; lineNumber: 91; column

ssm异常Error creating bean with name 'userMapper'

Error creating bean with name 'userMapper' defined in file [C:\Users\86156\IdeaProjects\crm-project\crm\target\crm\WEB-INF\classes\com\enhaonode\crm\settings\mapper\UserMapper.class]: Invocation of init method failed; nested excep

脚踏实地的Netty源码研究笔记——开篇

1. 脚踏实地的Netty源码研究笔记（1）——开篇 1.1. Netty介绍 Netty是一个老牌的高性能网络框架。在众多开源框架中都有它的身影，比如：grpc、dubbo、seata等。里面有着非常多值得学的东西： I/O模型内存管理各种网络协议的实现：http、redis、websocket等等各种各样有趣的技巧

4.注册——业务层 4.1 根据业务层不同，来具体查看异常种类，统一用ServiceExcption来继承 package com.cy.store.service.ex;public class ServiceExcepiton extends RuntimeException{ public ServiceExcepiton() { super(); } public ServiceExcepito

报错:querying database. Cause: java.sql.SQLException: Access denied for user ‘root‘@‘localhost‘ (usin

Exception in thread "main" org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: java.sql.SQLException: Access denied for user 'root'@'localhost' (using password: YES) ### The error may exis

mybatis Cause: java.sql.SQLException: sql injection violation, syntax error: 错误

mybatis Cause: java.sql.SQLException: sql injection violation, syntax error: 错误 ### Error querying database. Cause: java.sql.SQLException: sql injection violation, syntax error: [C@19dae201 is not a number! pos 138, line 6, column 19, token LITERAL_FL

Mybatis|opening session的空指针异常

控制台错误代码 `org.apache.ibatis.exceptions.PersistenceException: Error opening session. Cause: java.lang.NullPointerException Cause: java.lang.NullPointerException` 原因核心配置文件的<environments default="development">和<environment id="dat

Vertx之Exception异常统一处理拦截

介绍 Vertx统一异常拦截处理 1. maven项目依赖 <dependency> <groupId>io.vertx</groupId> <artifactId>vertx-web</artifactId> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>

spring boot 统一接口异常返回值

创建业务 Exception 一般在实际项目中，推荐创建自己的 Exception 类型，这样在后期会更容易处理，也比较方便统一，否则，可能每个人都抛出自己喜欢的异常类型，而造成代码混乱 ServiceException 用于抛出业务逻辑校验异常 UnauthorizedException 用于抛出用户未登录异常可根据自己的项目需

mybatis的mapper.xml文件中使用中文注释时，报异常Cause: com.sun.org.apache.xerces.internal.impl.io.MalformedByteSeque

可能的原因： 1、将mapper.xml的文件头的部分UTF-8修改为UTF8 <?xml version="1.0" encoding="UTF-8" ?><!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd"><

关于SpringMyBatis常见错误

1.org.apache.ibatis.exceptions.PersistenceException: ### Error building SqlSession. ### The error may exist in mybatis\mappers\demoUserMapper.xml ### Cause: org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: org.

mybatis问题BUG集

报错说明1:org.apache.ibatis.binding.BindingException: Type interface com.jt.mapper.UserMapper is not known to the MapperRegistry. 解决方案1: 检查namespace命名是否与接口一致报错说明2: org.apache.ibatis.binding.BindingException: Invalid bound statement (n

Mybatis常见异常

报错说明1： org.apache.ibatis.binding.BindingException: Type interface com.jt.mapper.DemoUserMapper is not known to the MapperRegistry. 解决方案：检查.xml映射文件中namespace的值，是否与mapper层中的接口一致报错说明2： org.apache.iba

2021-09-05

org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.type.TypeException: Could not set parameters for mapping: ParameterMapping{property=‘keyword’, mode=IN, javaType=class java.lang.String, jdbcType=null, numericScale=null,

Error parsing SQL Mapper Configuration. Cause: java.io.IOException: Could not find resource com/dy/d

报错信息： ### Error building SqlSession. ### The error may exist in com/dy/dao/mapping/userDao-mapping.xml ### Cause: org.apache.ibatis.builder.BuilderException: Error parsing SQL Mapper Configuration. Cause: java.io.IOException: Could not find resource com/

自定义异常类ServiceException

自定义异常类一般是为了配合自定义日志用的,对程序员关注的异常信息能更有针对性,自定义异常一般都会继承 RuntimeException类.并实现其中的方法,同时将自定义异常信息向上传递给父类直至顶级父类Throwable package app.base; import org.apache.log4j.Logger; /** * *

Cause: java.sql.SQLFeatureNotSupportedException: getObject with type

记录一次datetime转LocalDateTime报错。 org.springframework.dao.InvalidDataAccessApiUsageException: Error attempting to get column 'birthday' from result set. Cause: java.sql.SQLFeatureNotSupportedException: getObject with type ; getObject with type; nes

使用mybatis书写xml映射文件，sql大小写的问题。

我遇到的问题：找不到表，为啥，因为我把xml映射文件为了视觉效果更好，全部变成小写了。而在远程的mysql的表名称为大写字母，是以出现这个问题。可能出现的错误：问题1：Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown column 'S.ID' in 'field list' 问题2：Cau

运行Mybatis 源码报错

运行mybatis报错原因 pinoc 在尝试读源码的时候，从Mybatis中把代码下载下来，但是出现了如下错误： Cause: java.sql.SQLException: Error setting driver on UnpooledDataSource. Cause: java.lang.ClassNotFoundException: Cannot find class: com.mysql.jdbc.Driver 这是驱动包加载

访问MySql出现Error querying database. Cause: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException:错误

1.错误现象 Error querying database. Cause: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: 2.解决办法 MySQL没有启动成功

JVM相关 - 深入理解 System.gc()

自定义异常

1.自定义异常 public class CreateFailedException extends RuntimeException{ public CreateFailedException(String errMsg) { super(errMsg); } /** * Construct a new runtime exception with the cause * * @param cause cause */

关于mysql驱动版本报错解决，Cause: com.mysql.jdbc.exceptions.jdbc4、Unknown system variable ‘query_cache_size

Error01 针对Maven项目依赖 mysql驱动版本不配置 querying database. Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. ERR02 mysql驱动版本不配

java.lang.NullPointerException] with root cause

报错大致内容 java.lang.NullPointerException] with root cause 写在前面说明：这只是我发现的其中一个原因，可能你的和我有所不同。如果没有解决问题，轻喷。。项目简介 SSM项目，用eclipse开发。背景说明商城后台添加商品。填写完商品的相关信息后，提交表单，报错。原因填写