问题描述: 今天一个同事反映程序有问题,让帮忙查看后台日志,发现后台日志报错的信息如下: java.net.SocketException: Too many open files at java.net.Socket.createImpl(Socket.java:460) at java.net.Socket.connect(Socket.java:587) at org.apache.commons.net.SocketClient.connect(SocketClient.java:163…
环境:myeclipse+tomcat6+jdk6 今天搭建了一个Java Web项目,访问index.jsp时报如下错误: 严重: Servlet.service() for servlet jsp threw exceptionjava.lang.NullPointerException at org.apache.jsp.front.index_jsp._jspInit(index_jsp.java:30) at org.apache.jasper.runtime.HttpJs…
class Person{ private String name ; private String sex ; public Person(){ System.out.println("c"); } public Person(String c1){ this.name =c1; System.out.println("c1"+c1); } public Person(String c1,String c2){ this.name =c1; this.sex =c…
在做文件上传时,当写入上传的文件到文件时,会报错“java.lang.IllegalStateException: File has been moved - cannot be read again”,网上一般说需要配置maxInMemorySize,自己测试发现,maxInMemorySize确实会影响结果,并且项目还跟写入文件到文件夹的transferTo(File dest)方法也有关系,以下是报错截图: 问题说明 通过debug和浏览器提示,浏览器端代码没有问题,问题跟服务端专门处理上…
报错: java.lang.IllegalStateException: LifecycleProcessor not initialized - call 'refresh' before invoking lifecycle methods via the context: Root WebApplicationContext: startup date [Thu Nov 27 08:53:38 CST 2014]; root of context hierarchy 解决: 先关闭tomc…
开着idea,死机了,关机重启.重启之后,重新打开idea报错java.lang.AssertionError:upexpected content storage modification. goole得到: If you cannot even open your project in IntelliJ: Close IntelliJ Go to the directory <your_home>/.IntelliJIdeaXX/system/cache where XX is your…
Intellij IDEA 报错java.lang.NoClassDefFoundError 11-Aug-2018 23:48:24.686 严重 [http-nio-8080-exec-5] org.apache.catalina.core.StandardWrapperValve.invoke Servlet.service() for servlet [com.wbg.testservlet] in context with path [] threw exception [Servle…