解决在mybatis中使用CTE进行oracle查询数据类型为long的字段出现流关闭问题
今天把notice表中的content字段改为long字段后，含有该字段的使用CTE的查询语句报错了。提示一下错误
### Cause: java.sql.SQLException: 流已被关闭
; uncategorized SQLException for SQL []; SQL state [99999]; error code [17027]; 流已被关闭; nested exception is java.sql.SQLException: 流已被关闭] with root cause
java.sql.SQLException: 流已被关闭
at oracle.jdbc.driver.LongAccessor.getBytesInternal(LongAccessor.java:156)
at oracle.jdbc.driver.LongAccessor.getBytes(LongAccessor.java:126)
at oracle.jdbc.driver.LongAccessor.getString(LongAccessor.java:201)
at oracle.jdbc.driver.T4CLongAccessor.getString(T4CLongAccessor.java:427)
at oracle.jdbc.driver.OracleResultSetImpl.getString(OracleResultSetImpl.java:1251)
at oracle.jdbc.driver.OracleResultSet.getString(OracleResultSet.java:494)
at sun.reflect.GeneratedMethodAccessor30.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.apache.ibatis.logging.jdbc.ResultSetLogger.invoke(ResultSetLogger.java:67)
at com.sun.proxy.$Proxy75.getString(Unknown Source)
at org.apache.ibatis.type.StringTypeHandler.getNullableResult(StringTypeHandler.java:37)
at org.apache.ibatis.type.StringTypeHandler.getNullableResult(StringTypeHandler.java:26)
at org.apache.ibatis.type.BaseTypeHandler.getResult(BaseTypeHandler.java:55)
at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.getPropertyMappingValue(DefaultResultSetHandler.java:390)
at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.applyPropertyMappings(DefaultResultSetHandler.java:364)
at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.getRowValue(DefaultResultSetHandler.java:338)
at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.handleRowValuesForSimpleResultMap(DefaultResultSetHandler.java:291)
at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.handleRowValues(DefaultResultSetHandler.java:266)
at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.handleResultSet(DefaultResultSetHandler.java:236)
at org.apache.ibatis.executor.resultset.DefaultResultSetHandler.handleResultSets(DefaultResultSetHandler.java:150)
at org.apache.ibatis.executor.statement.PreparedStatementHandler.query(PreparedStatementHandler.java:60)
at org.apache.ibatis.executor.statement.RoutingStatementHandler.query(RoutingStatementHandler.java:73)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.apache.ibatis.plugin.Invocation.proceed(Invocation.java:49)
at com.moral.frame.dao.PaginationInterceptor.query(PaginationInterceptor.java:137)
at com.moral.frame.dao.PaginationInterceptor.intercept(PaginationInterceptor.java:78)
at org.apache.ibatis.plugin.Plugin.invoke(Plugin.java:60)
at com.sun.proxy.$Proxy140.query(Unknown Source)
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)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:358)
at com.sun.proxy.$Proxy83.selectList(Unknown Source)
at org.mybatis.spring.SqlSessionTemplate.selectList(SqlSessionTemplate.java:205)
at org.apache.ibatis.binding.MapperMethod.executeForMany(MapperMethod.java:117)
at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:63)
at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:52)
at com.sun.proxy.$Proxy122.getReceiveNoticeList(Unknown Source)
at com.moral.notice.service.impl.NoticeServiceImpl.getReceiveNoticeList(NoticeServiceImpl.java:161)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:309)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:196)
at com.sun.proxy.$Proxy126.getReceiveNoticeList(Unknown Source)
at com.moral.notice.view.NoticeController.getNoticeListPage(NoticeController.java:69)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:176)
at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:436)
at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:424)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:790)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644)
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:549)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:620)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.logging.log4j.core.web.Log4jServletFilter.doFilter(Log4jServletFilter.java:66)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1040)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:313)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
但是我没有使用CTE查询的语句可以正常执行，不会报错，下面是cte的查询语句和普通的查询语句
With NoticeCTE As(
Select
*
from (
Select
noticeKey,
title,
content
From Notice
Order by noticeKey desc
)
), NoticeReadCTE As(
Select
distinct nc.noticeKey, 1 readState
From NoticeCTE nc, notice_Reader nr
Where nc.noticeKey = nr.noticeKey
And nr.readerCode = #{readerCode}
)
Select
nc.*, readState
From NoticeCTE nc
left join NoticeReadCTE rc on nc.noticeKey = rc.noticeKey
order by nc.noticeKey desc
以下是普通的查询语句
Select
noticeKey,
title,
content
From Notice
Where noticeKey = #{noticeKey}
将long类型改成clob，以后上述的sql语句就可以正常执行了。之所以会出现上述原因是因为：
1、cte会自动创建临时表
2、而含有long类型字段不能通过create table b as select * from a方式创建表
3、同时long数据类型已经过时，不建议使用，建议使用clob数据类型
另外还发现在使用map传递参数给mybaits中的CTE查询语句时必须明确指定参数的数据类型，否则会报以下错误
; uncategorized SQLException for SQL []; SQL state [99999]; error code [17004]; 无效的列类型: 1111; nested exception is java.sql.SQLException: 无效的列类型: 1111] with root cause
java.sql.SQLException: 无效的列类型: 1111
at oracle.jdbc.driver.OracleStatement.getInternalType(OracleStatement.java:3900)
at oracle.jdbc.driver.OraclePreparedStatement.setNullCritical(OraclePreparedStatement.java:4406)
at oracle.jdbc.driver.OraclePreparedStatement.setNull(OraclePreparedStatement.java:4388)
at oracle.jdbc.driver.OraclePreparedStatementWrapper.setNull(OraclePreparedStatementWrapper.java:1281)
at org.apache.ibatis.type.BaseTypeHandler.setParameter(BaseTypeHandler.java:43)
at org.apache.ibatis.scripting.defaults.DefaultParameterHandler.setParameters(DefaultParameterHandler.java:81)
at com.moral.frame.dao.PaginationInterceptor.setParameters(PaginationInterceptor.java:210)
at com.moral.frame.dao.PaginationInterceptor.count(PaginationInterceptor.java:166)
at com.moral.frame.dao.PaginationInterceptor.query(PaginationInterceptor.java:135)
at com.moral.frame.dao.PaginationInterceptor.intercept(PaginationInterceptor.java:78)
at org.apache.ibatis.plugin.Plugin.invoke(Plugin.java:60)
at com.sun.proxy.$Proxy72.query(Unknown Source)
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)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:358)
at com.sun.proxy.$Proxy14.selectList(Unknown Source)
at org.mybatis.spring.SqlSessionTemplate.selectList(SqlSessionTemplate.java:205)
at org.apache.ibatis.binding.MapperMethod.executeForMany(MapperMethod.java:117)
at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:63)
at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:52)
at com.sun.proxy.$Proxy54.getReceiveNoticeList(Unknown Source)
at com.moral.notice.service.impl.NoticeServiceImpl.getReceiveNoticeList(NoticeServiceImpl.java:162)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:309)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:196)
at com.sun.proxy.$Proxy58.getReceiveNoticeList(Unknown Source)
at com.moral.notice.view.NoticeController.getNoticeListPage(NoticeController.java:80)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:176)
at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:436)
at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:424)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:790)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644)
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:549)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:620)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.logging.log4j.core.web.Log4jServletFilter.doFilter(Log4jServletFilter.java:66)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1040)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:313)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
正确的mybaitis的sql语句配置为
With NoticeCTE As(
Select
*
from (
Select
noticeKey,
title,
content
From Notice
<where>
<trim suffixOverrides="and">
<if test="arrDivisionKey != null ">
and divisionKey in (
<foreach collection="arrDivisionKey" item="divisionKey" index="index" separator=" , " >
#{divisionKey, jdbcType=VARCHAR}
</foreach>
)
</if> <if test="readerCode != null and readerCode != ''">
And createCode != #{readerCode, jdbcType=VARCHAR}
</if>
</trim>
</where>
Order by noticeKey desc
)
<where>
<trim suffixOverrides="and">
<if test="noticeCount != null and noticeCount > 0">
and rowNum <= #{noticeCount, jdbcType=NUMBERIC}
</if>
</trim>
</where>
), NoticeReadCTE As(
Select
distinct nc.noticeKey, 1 readState
From NoticeCTE nc, mor_notice_Reader nr
Where nc.noticeKey = nr.noticeKey
And nr.readerCode = #{readerCode, jdbcType=VARCHAR}
)
Select
nc.*, readState
From NoticeCTE nc
left join NoticeReadCTE rc on nc.noticeKey = rc.noticeKey
order by nc.noticeKey desc
出现错误的原因是传入的参数为Map<String, Object>类型，mybatis无法确定参数的实际类型，因此需要手工指定。
解决在mybatis中使用CTE进行oracle查询数据类型为long的字段出现流关闭问题的更多相关文章
- Mybatis中多表联查，查询出来的字段出现重名，造成数据异常的解决方法！
在做一对多出现的问题,引发的思考:当数据库表中,主表的主键id和明细表的中的字段名相同时怎么办?Mybatis进行自动映射赋值的时候会不会出现异常? 注意:M ...
- Mybatis中动态SQL多条件查询
Mybatis中动态SQL多条件查询 mybatis中用于实现动态SQL的元素有: if:用if实现条件的选择,用于定义where的字句的条件. choose(when otherwise)相当于Ja ...
- Mybatis笔记四：Mybatis中的resultType和resultMap查询操作实例详解
resultType和resultMap只能有一个成立,resultType是直接表示返回类型的,而resultMap则是对外部ResultMap的引用,resultMap解决复杂查询是的映射问题.比 ...
- Mybatis中的关联映射和查询
一.商品订单数据模型 1.数据表 这里定义了四个表,分别表示用户,商品,订单,和订单详情. 用户表user CREATE TABLE `user` ( `id` int(11) NOT NULL AU ...
- Mybatis 中的转义字符及常用查询
转译符 1.特殊字符转译 < < 小于 > > 大于 & & 与 ' ’ 单引号 " " 双引号 需要注意的是分号是必不可少的. 比如 a ...
- mybatis中使用mysql的模糊查询字符串拼接（like）
方法一: <!-- 根据hid,hanme,grade,模糊查询医院信息--> 方法一: List<Hospital> getHospitalLike(@Param(" ...
- 关于mybatis中sql映射文件模糊查询的使用
1.从前台传递一个String类型的参数到后台进行查询,如果牵涉到模糊查询会报错,应该把参数封装到对象中再进行传递然后进行模糊查询 2.一个查询框,多个查询条件 <if test="c ...
- myBatis中 collection 或 association 联合查询 中column 传入多个参数值
下面是一个树形结构表自连接 联合查询 Demo <resultMap id="BaseResultMap" type="com.maidan.daas.entit ...
- Oracle 查询一个表的所有字段
select * from user_tab_columns where table_name = 'T_B_CLIENT_MSG'
随机推荐
- [HDU 1254] 推箱子
推箱子 Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submis ...
- 纯CSS的颜色渐变效果
本例展示了一个纯css渐变的效果.其兼容IE6以上浏览器等各主流浏览器: 案例效果:查看演示 代码如下: css: *{margin:0;padding:0;} .linear{ width:100% ...
- [codevs1380]没有上司的舞会
本题地址 http://www.luogu.org/problem/show?pid=1352 http://codevs.cn/problem/1380/ 题目描述 某大学有N个职员,编号为1~N. ...
- hotplug\uevent机制（1）
hotplug就是热拔插,在linux里面,这个功能是通过class_device_create这个函数来实现的,那么我们来分析下这个函数: class_device_create(cls, NULL ...
- CodeForces 361B Levko and Permutation
题意:有n个数,这些数的范围是[1,n],并且每个数都是不相同的.你需要构造一个排列,使得这个排列上的数与它所在位置的序号的最大公约数满足 > 1,并且这些数的个数恰好满足k个,输出这样的一个排 ...
- linkscrpit
一 section是什么? 好吧,我们需要解释一下平时编译链接生成的二进制可执行程序(比如说ELF,EXE也行),so或者dll,内核(非压缩的,参加本系列第一节内容.vmlinux),或者ko是怎么 ...
- SharePoint服务器将连接配置数据库的连接字符串保存在什么地方？
经常有人问我这个问题,SharePoint服务器将连接配置数据库的连接字符串保存在什么地方?虽然其他SharePoint服务器场设置都是保存到了配置数据库里面,但连接配置数据库本身的连接字符串,肯定是 ...
- 通过一张简单的图，让你彻底地搞懂JS的==运算
大家知道,JavaScript中的==是一种比较复杂运算,它的运算规则很奇怪,很容易让人犯错,从而成为JavaScript中“最糟糕的特性”之一. 在仔细阅读ECMAScript规范的基础上,我画了一 ...
- 【转】sublime text 2 下的Markdown写作
sublime text 2 下的Markdown写作 作为Windows/Mac/Linux下强大的文本编辑器,st提供了对Markdown语言的支持.通过设置可实现markdown预览和转换功 ...
- hdoj 1532 Drainage Ditches【最大流模板题】
Drainage Ditches Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) ...