I'm using codeigniter/datamapper to develop an inviocing application and I'm getting an error that i don't understand. If I do the following: $i = new Invoice(); $i->save(); Then i get the following error: A Database Error Occurred You must use the &qu…

1.问题:java8 list转Map 报错Collectors.toMap :: results in "Non-static method cannot be refernced from static context" 解决:将第二个参数传入function 原因:Collectors.toMap参数接收为function 2.解决key重复问题: Map<String,String> map2=list.stream().collect(Collectors.toM…

版本apache-cxf-3.1.0 命令如下:wsdl2java -p com.wz.interfaces -d ./src -client ./ws/xxx.wsdl 报错如下: WSDLToJava Error: Parameter: shead already exists for method 方法名but of type com.wz.interfaces.某类.SHEAD instead of com.wz.interfaces.另外一个类.SHEAD.  Use a JAXWS/…

做项目的时候遇到这个问题,搞了一上午终于解决了,让我们看看是什么问题: buttons: [ { text: '保存', icon: '../../../Images/extjs/disk.png', handler: function () { if (!formPanel.getForm().isValid()) { return; } formPanel.getForm().submit({ url: '/Manage/SaveArticle', method: 'get', //para…

今天在开发时报了以下错误,记录一下 我们不能在组件销毁后设置state,防止出现内存泄漏的情况 出现原因直接告诉你了,组件都被销毁了,还设置个锤子的state啊 解决方案: 利用生命周期钩子函数:componentWillUnmount 将报错的地方移入此钩子里进行处理 componentWillUnmount(){//处理逻辑 }…

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'orderServiceImpl': Unsatisfied dependency expressed through field 'memberFeign'; nested exception is org.springframework.beans.factory.BeanCreationExcept…

使用MySQL执行update的时候报错:Error Code: 1175. You are using safe update mode and you tried to update a table without a WHERE that uses a KEY column To disable safe mode, toggle the option in Preferences -> SQL Queries and reconnect. 在使用mysql执行update的时候,如果不是…

初始数据类似如下: 填充下缺失值 data[data==0] <- NA data[is.na(data)] <- min(data,na.rm = T)*0.01 pheatmap(log10(data)) pheatmap(data,scale = "row") 直接取log绘制不报错,但做scale时报错: Error in hclust(d, method = method) : NA/NaN/Inf in foreign function call (arg 11…

在学习JavaWeb JSTL与自定义标签时遇到的坑,用的老师给的代码结果直接原地报错:javax.servlet.ServletException: org.apache.jasper.JasperException: /math.jsp (line: [15], column: [0]) Unable to find setter method for attribute: [x], 代码如下 package com.sirifeng.mytag; import javax.servlet.…

You can't specify target table 'sc' for update in FROM clause 背景:把“sc”表中“叶平”老师教的课的成绩都更改为此课程的平均成绩: 上面的sql是我写的,执行就报这个错,这个原因说的是 不能从自己表里查数据再更新自己 解决方法:嵌套一层中间表 update sc set sc.score = (select t1.score from (select avg(sc1.score) score from sc sc1 where sc…