做一个通过JNDI查找资源的小练习,Context = new InitialContext(),发现NamingException异常,eclipse编辑器只有catch的提示,没有throws的提示,强行在doGet()方法后throws NamingException会报"Exception NamingException is not compatible with throws clause in HttpServlet.doGet(HttpServletRequest, HttpSe…

在升级JDK至1.8之后,使用Maven-javadoc-plugin插件打包报错,[ERROR] Failed to execute goal org.apache.maven.plugins:maven-javadoc-plugin:2.10.4:jar (attach-javadocs) on project 详细信息如下 [ERROR] Failed to execute goal org.apache.maven.plugins:maven-javadoc-plugin:2.10.4:…

开门见山: 这个误区是:子线程不能更新 UI ,其应该分类讨论,而不是绝对的. 半小时前,我的 XRecyclerView 群里面,一位群友私聊我,问题是: 为什么我的子线程更新了 UI 没报错? 我叫他发下代码我看,如下,十分简单的代码. @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activi…

报错出现 java.lang.IllegalArgumentException: Control character in cookie value or attribute. at org.apache.tomcat.util.http.CookieSupport.isHttpSeparator(CookieSupport.java:205) at org.apache.tomcat.util.http.CookieSupport.isHttpToken(CookieSupport.java:…

启动tomcat catalina.out报错如下,登陆的时候无法显示验证码 2017-06-09 11:23:06,628 DEBUG org.springframework.web.servlet.DispatcherServlet 845 - DispatcherServlet with name 'spring-mvc' processing GET request for [/data-analysis/kaptchaImage.do]2017-06-09 11:23:06,629 D…

"C:\Program Files\Java\jdk1.7.0_75\bin\java" -XX:TieredStopAtLevel=1 -noverify -Dspring.output.ansi.enabled=always "-javaagent:C:\Program Files\JetBrains\IntelliJ IDEA 2017.1.4\lib\idea_rt.jar=61656:C:\Program Files\JetBrains\IntelliJ IDEA…

public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { request.setCharacterEncoding("utf-8"); String username= request.getParameter("username"); HttpSession session = request.…

CheckStyle报错的常见问题及解决方式 声明: 本文摘自百度文库.希望这篇文章提到的规范能对大家编程起到好的效果,此文不定期更新,将推出更加详尽的编程规范. 1   提示:Type is missing a javadoc commentClass 说明:缺少类型说明 解决方法:增加javadoc说明 2   提示:“{” should be on the previous line 说明:“{”应该位于前一行. 解决方法:把“{”放到上一行去 3   提示:Methos is missi…

仅作记录:参考文章:http://www.blogjava.net/vickzhu/archive/2008/11/03/238337.html 报错信息: java.lang.IllegalStateException: getOutputStream() has already been called for this response at org.apache.catalina.connector.Response.getWriter(Response.java:662) at org.…

在使用hibernate创建数据库的表格时,出现了如下报错: 十二月 28, 2016 10:17:02 上午 org.hibernate.tool.hbm2ddl.SchemaExport performERROR: HHH000389: Unsuccessful: create table NEWS (ID integer not null auto_increment, TITLE varchar(255), AUTHOR varchar(255), DATE datetime, DESC…