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mysql5.x忘记密码

Sat, 17 Feb 2024 07:09:00 GMT

参考：(x��)https://blog.csdn.net/qq_34102150/article/details/126120056

1、停止MySQL服务�Q�输�?net stop mysql 停止服务�?/div>

2、切换到MySQL的bin文�g下，

mysql5.x�Q?nbsp; mysqld --console --skip-grant-tables --shared-memory

mysqld --console --skip-grant-tables --shared-memory

3、输入mysql -uroot -p回�R�Q�不用输入密码，直接按回车蟩�q�，

输入�Q?nbsp; use mysql

输入�Q?nbsp; update user set password=PASSWORD('123456') where USER='root';
或者：(x��) GRANT ALL PRIVILEGES ON *.* TO 'root'@'%'IDENTIFIED BY '123456' WITH GRANT OPTION;
输入�Q?nbsp; FLUSH PRIVILEGES;

4、重启服�?/div>

半导�?/a> 2024-02-17 15:09 发表评论

Sat, 08 Aug 2020 02:11:00 GMT

准备工作�Q?br /> 需要https的域�?br /> 1、域名申诗��备�? �Q�我是在阉K��云买的服务器�Q�域名也在阿里云购买 �Q?br /> 2、域名与IP�l�定
3、ssl安全证书甌��Q?span style='display: inline !important; float: none; background-color: #ffffff; color: #000000; font-family: verdana,"courier new"; font-size: 14px; font-style: normal; font-variant: normal; font-weight: 400; letter-spacing: normal; line-height: 150%; orphans: 2; text-align: left; text-decoration: none; text-indent: 0px; text-transform: none; -webkit-text-stroke-width: 0px; white-space: normal; word-spacing: 0px;'>https�Q?/font>
4、下载ssl安全证书布��v在tomcat服务�?br /> 4、在云服务器tomcat中布�|�https

参�? https://blog.csdn.net/qq_35206244/article/details/97613498

ps:��M��操作不会(x��)�Q�直接打阉K��云客服电(sh��)�?95187

��程序开发流�E�：(x��)
1、在微信官网注册帐号
2、下载小�E�序开发工�?br /> 3、小�E�序开发、上�?
4、小�E�序送审�Q�审栔R��过卛_��分��n�l�你的朋�?img src ="http://www.tkk7.com/fiele/aggbug/435637.html" width = "1" height = "1" />

半导�?/a> 2020-08-08 10:11 发表评论

mall 工程创徏�t�坑

Mon, 20 Jul 2020 13:52:00 GMT

新徏��目�?nbsp;

www.macrozheng.com��目�Q�打开maven��L��引入��p�|�Q�后�?/div>

https://www.cnblogs.com/dk1024/p/10778841.html

https://blog.csdn.net/ken_ding/article/details/85623092�q�个是前端有可能遇见的坑的解军_��?br />

安装环境文档�Q?br />

http://www.macrozheng.com/#/deploy/mall_deploy_windows

半导�?/a> 2020-07-20 21:52 发表评论

springboot 打包后，在dos命��o(h��)行运行提�C�没有主清单属性的解决办法

Sat, 27 Jun 2020 08:42:00 GMT

1.在pom.xml文�g中插�?/div>

            org.springframework.boot
            spring-boot-maven-plugin

2.双击IDEA右侧Maven Projects的lifecycle下的package�Q�打包成jar�Q�重新执行以上命令�?/div>

半导�?/a> 2020-06-27 16:42 发表评论

MyBatis出现org.apache.ibatis.executor.ExecutorException异常

Wed, 25 Mar 2020 12:01:00 GMT

DEBUG [main] - PooledDataSource forcefully closed/removed all connections.
DEBUG [main] - PooledDataSource forcefully closed/removed all connections.
DEBUG [main] - PooledDataSource forcefully closed/removed all connections.
DEBUG [main] - PooledDataSource forcefully closed/removed all connections.
DEBUG [main] - Opening JDBC Connection
DEBUG [main] - Created connection 29011566.
DEBUG [main] - Setting autocommit to false on JDBC Connection [com.mysql.jdbc.JDBC4Connection@1baae6e]
DEBUG [main] - ==>  Preparing: select * from user where username like concat(?,'%')
DEBUG [main] - ==> Parameters: �?String)

org.apache.ibatis.exceptions.PersistenceException:
### Error querying database.  Cause: org.apache.ibatis.executor.result.ResultMapException: Error attempting to get column 'username' from result set.  Cause: java.sql.SQLException: Cannot convert value 'å¼ ä¸' from column 2 to TIMESTAMP.
### The error may exist in sqlmap/User.xml
### The error may involve test.findUserByName3
### The error occurred while handling results
### SQL: select * from user where username like concat(?,'%')
### Cause: org.apache.ibatis.executor.result.ResultMapException: Error attempting to get column 'username' from result set.  Cause: java.sql.SQLException: Cannot convert value 'å¼ ä¸' from column 2 to TIMESTAMP.

    at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:30)
    at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:149)
    at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:140)
    at com.swjd.test.B.test2(B.java:40)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:497)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
    at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
    at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
    at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
    at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
    at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
Caused by: org.apache.ibatis.executor.result.ResultMapException: Error attempting to get column 'username' from result set.  Cause: java.sql.SQLException: Cannot convert value 'å¼ ä¸' from column 2 to TIMESTAMP.
    at org.apache.ibatis.type.BaseTypeHandler.getResult(BaseTypeHandler.java:83)
    at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.createUsingConstructor(DefaultResultSetHandler.java:671)
    at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.createByConstructorSignature(DefaultResultSetHandler.java:654)
    at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.createResultObject(DefaultResultSetHandler.java:618)
    at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.createResultObject(DefaultResultSetHandler.java:591)
    at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.getRowValue(DefaultResultSetHandler.java:397)
    at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.handleRowValuesForSimpleResultMap(DefaultResultSetHandler.java:354)
    at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.handleRowValues(DefaultResultSetHandler.java:328)
    at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.handleResultSet(DefaultResultSetHandler.java:301)
    at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.handleResultSets(DefaultResultSetHandler.java:194)
    at org.apache.ibatis.executor.statement.PreparedStatementHandler.query(PreparedStatementHandler.java:65)
    at org.apache.ibatis.executor.statement.RoutingStatementHandler.query(RoutingStatementHandler.java:79)
    at org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:63)
    at org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:324)
    at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:156)
    at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:109)
    at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:83)
    at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:147)
     24 more
Caused by: java.sql.SQLException: Cannot convert value 'å¼ ä¸' from column 2 to TIMESTAMP.
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1055)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:926)
    at com.mysql.jdbc.ResultSetRow.getTimestampFast(ResultSetRow.java:1328)
    at com.mysql.jdbc.ByteArrayRow.getTimestampFast(ByteArrayRow.java:124)
    at com.mysql.jdbc.ResultSetImpl.getTimestampInternal(ResultSetImpl.java:6669)
    at com.mysql.jdbc.ResultSetImpl.getTimestamp(ResultSetImpl.java:5988)
    at com.mysql.jdbc.ResultSetImpl.getTimestamp(ResultSetImpl.java:6026)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:497)
    at org.apache.ibatis.logging.jdbc.ResultSetLogger.invoke(ResultSetLogger.java:69)
    at com.sun.proxy.$Proxy6.getTimestamp(Unknown Source)
    at org.apache.ibatis.type.DateTypeHandler.getNullableResult(DateTypeHandler.java:39)
    at org.apache.ibatis.type.DateTypeHandler.getNullableResult(DateTypeHandler.java:28)
    at org.apache.ibatis.type.BaseTypeHandler.getResult(BaseTypeHandler.java:81)
     41 more
Caused by: java.lang.NumberFormatException: 张三
    at com.mysql.jdbc.StringUtils.getInt(StringUtils.java:756)
    at com.mysql.jdbc.ResultSetRow.getTimestampFast(ResultSetRow.java:1253)
     54 more

Process finished with exit code -1

上网找了(ji��n)一些答案也没有解决我的问题�Q?/p>

后来发现原来是User�cȝ��构造函数问题，找不到相关的构造函敎ͼ�试着在User中加一个默认的构造函敎ͼ��p��决了(ji��n)。。�?/p>

希望能帮到大家�?br />

默认的构造函数在创徏构造函数后�Q�不�?x��)自动创建默认构造函�?/div>

DEBUG [main] - Logging initialized using 'class org.apache.ibatis.logging.slf4j.Slf4jImpl' adapter.
DEBUG [main] - PooledDataSource forcefully closed/removed all connections.
DEBUG [main] - PooledDataSource forcefully closed/removed all connections.
DEBUG [main] - PooledDataSource forcefully closed/removed all connections.
DEBUG [main] - PooledDataSource forcefully closed/removed all connections.
DEBUG [main] - Opening JDBC Connection
DEBUG [main] - Created connection 27155935.
DEBUG [main] - Setting autocommit to false on JDBC Connection [com.mysql.jdbc.JDBC4Connection@19e5ddf]
DEBUG [main] - ==>  Preparing: select * from user where id=?
DEBUG [main] - ==> Parameters: 27(Integer)

org.apache.ibatis.exceptions.PersistenceException:
### Error querying database.  Cause: org.apache.ibatis.reflection.ReflectionException: Error instantiating class com.swjd.po.User with invalid types () or values (). Cause: java.lang.NoSuchMethodException: com.swjd.po.User.<init>()
### The error may exist in sqlmap/User.xml
### The error may involve test.findUserById-Inline
### The error occurred while setting parameters
### SQL: select * from user where id=?
### Cause: org.apache.ibatis.reflection.ReflectionException: Error instantiating class com.swjd.po.User with invalid types () or values (). Cause: java.lang.NoSuchMethodException: com.swjd.po.User.<init>()

    at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:26)
    at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:111)
    at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:102)
    at org.apache.ibatis.session.defaults.DefaultSqlSession.selectOne(DefaultSqlSession.java:66)
    at com.test.Test1.test1(Test1.java:31)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:497)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
    at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
    at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
    at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
    at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
    at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
Caused by: org.apache.ibatis.reflection.ReflectionException: Error instantiating class com.swjd.po.User with invalid types () or values (). Cause: java.lang.NoSuchMethodException: com.swjd.po.User.<init>()
    at org.apache.ibatis.reflection.factory.DefaultObjectFactory.instantiateClass(DefaultObjectFactory.java:86)
    at org.apache.ibatis.reflection.factory.DefaultObjectFactory.create(DefaultObjectFactory.java:48)
    at org.apache.ibatis.reflection.factory.DefaultObjectFactory.create(DefaultObjectFactory.java:41)
    at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.createResultObject(DefaultResultSetHandler.java:528)
    at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.createResultObject(DefaultResultSetHandler.java:507)
    at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.getRowValue(DefaultResultSetHandler.java:331)
    at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.handleRowValuesForSimpleResultMap(DefaultResultSetHandler.java:291)
    at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.handleRowValues(DefaultResultSetHandler.java:266)
    at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.handleResultSet(DefaultResultSetHandler.java:236)
    at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.handleResultSets(DefaultResultSetHandler.java:150)
    at org.apache.ibatis.executor.statement.PreparedStatementHandler.query(PreparedStatementHandler.java:60)
    at org.apache.ibatis.executor.statement.RoutingStatementHandler.query(RoutingStatementHandler.java:73)
    at org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:60)
    at org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:267)
    at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:137)
    at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:96)
    at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:77)
    at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:108)
     25 more
Caused by: java.lang.NoSuchMethodException: com.swjd.po.User.<init>()
    at java.lang.Class.getConstructor0(Class.java:3082)
    at java.lang.Class.getDeclaredConstructor(Class.java:2178)
    at org.apache.ibatis.reflection.factory.DefaultObjectFactory.instantiateClass(DefaultObjectFactory.java:60)
     42 more

Process finished with exit code -1

�q�种错也是同��L(f��ng)��问题�Q?br />

加上无参构造函数就可以�?ji��n)�?/div>

当创建对象来接受sql�l�果时会(x��)遍历实体�cȝ��构造方法找��C��之匹配的�Q�如果实体类中有构造方法了(ji��n)但是参数不匹配的话就�?x��)报上述错误�Q�此时添加无参构造方法（默认的构造方法）(j��)�Q�会(x��)走其他方法，

https://blog.csdn.net/qq_35975416/article/details/80488267

半导�?/a> 2020-03-25 20:01 发表评论

idea jsp代码不提�C�Java代码

Sun, 08 Mar 2020 12:11:00 GMT

�?lt;head>里写java代码有提�C�，�?lt;body>里不�?>��有提示�?br />
�q�是�׃��按提�C�快捷键a(ch��n)lt+enter��D��。解��x��法一直未扑ֈ�合适的�?nbsp;
解决�Ҏ(gu��)��Q?br />

半导�?/a> 2020-03-08 20:11 发表评论

��目��理推荐好文

Sun, 08 Mar 2020 03:41:00 GMT

挣值管理（PV、EV、AC、SV、CV、SPI、CPI�Q�记忆之我见 http://www.cnitpm.com/pm/7707.html https://blog.csdn.net/weixin_38197294/article/details/79852129

半导�?/a> 2020-03-08 11:41 发表评论

Sat, 08 Feb 2020 10:36:00 GMT

html写法

<form id="myform">
<input type="radio" value="1" name="gender">�?br /><input type="radio" value="2"  name="gender">�?br /><input type="text" name="username" />
<input type="button" value="提交" onclick="fun()"/>
form>
<div id="myText">div>

获取值方式一

"+data;
               },"text")
        }
    script>

获取值方式二�Q?br />

var gender = $ ("input [name= 'gender' ] : checked") .val() ;

半导�?/a> 2020-02-08 18:36 发表评论

Wed, 16 Oct 2019 08:06:00 GMT

spring boot�l�合thymeleaf通过后台传入的数值��@环生成标�{?/span>

半导�?/a> 2019-10-16 16:06 发表评论

Sat, 12 Oct 2019 08:35:00 GMT

模态框传��|��(x��)

https://blog.csdn.net/linhaiyun_ytdx/article/details/77417702

半导�?/a> 2019-10-12 16:35 发表评论