Unresolved compilation problem: The method start() in the type Thread is not [问题点数:50分]

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java异常解决方案
一、Hibernate (1)org.hibernate.TransientObjectException: object references an unsaved transient instance.... (2)org.springframework.orm.hibernate3.HibernateSystemException: Don't change the reference
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1. Duplicate local variable XXX(重复的局部变量名)java.lang.Error: Unresolved <em>compilation</em> <em>problem</em>: Duplicate local variable map****************解决方法:**************** 将重复的局部变量名删除或改变;
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java.lang.Error: Unresolved compilation problem: The method showModifyItemInfo
java.lang.Error: Unresolved <em>compilation</em> <em>problem</em>: rn The <em>method</em> showModifyItemInfo(long) is undefined for the <em>type</em> IItemInfornrn这个意思好象是说我showModifyItemInfo在接口IItemInfo中没有定义,可我明明定义了,而且MyEclipse编译也通过了。rn[code=Java]rn /**rn * 显示修改物品信息页面rn * @param requestrn * @param responsern * @returnrn */rn public ModelAndView showModifyItemInfo(HttpServletRequest request,HttpServletResponse response)rn Map session = loginSession.getUserSession();rn long id = ServletRequestUtils.getLongParameter(request, "id", 0);rn Map map = itemBo.showModifyItemInfo(id);rn request.setAttribute("companyId", session.get("companyId"));rn return new ModelAndView("pages/item/updateItem.jsp",map);rn rn[/code]rnrn我在方法的开始处设置了一个断点,结果录色的条直接指向了Map map = itemBo.showModifyItemInfo(id);这行。我在Variables看不到id这个变量,而且我Watch后,显示出现异常“id cannot be resolved”rn异常:rnrn2009-12-22 23:18:51 org.apache.catalina.core.StandardWrapperValve invokern严重: Servlet.service() for servlet dispatcherServlet threw exceptionrnjava.lang.Error: Unresolved <em>compilation</em> <em>problem</em>: rn The <em>method</em> showModifyItemInfo(long) is undefined for the <em>type</em> IItemInfornrn at oysl.itemInfo.action.ItemInfoAction.showModifyItemInfo(ItemInfoAction.java:104)rn at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)rn at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)rn at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)rn at java.lang.reflect.Method.invoke(Method.java:597) rn等等,不全部帖出。
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compilation problem">错误:in thread "main" java.lang.Error: Unresolved compilation problem
错误如下:rn Exception in <em>thread</em> "main" java.lang.Error: Unresolved <em>compilation</em> <em>problem</em>: rnrnat HelloWorldSwing.main(HelloWorldSwing.java:16 停在下面的红色语句处)rnrn源程序如下:rnimport java.awt.Component;rnimport javax.swing.JFrame;rnimport javax.swing.JLabel; rnimport javax.swing.SwingUtilities; rnrnpublic class HelloWorldSwing rnprivate static void createAndShowGUI()rnrnJFrame frame=new JFrame("hi world elva");rnframe.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);rnJLabel label = new JLabel("HE");rnframe.getContentPane().add(label);rnframe.pack();rnframe.setVisible(true); rnrnpublic static void main(String[] args) rnjavax.swing.SwingUtilities.invokeLater(new Runnable() rnpublic void run()rncreateAndShowGUI();rn rn);rnrnrnrn错误图片如下:rnrn[img=http://img.bbs.csdn.net/upload/201601/12/1452560921_454572.jpg][/img]rnrn错误好象有两处,一处在第16行,即蓝色底色那一行,另一处是在 整行下面有虚线 请帮忙分析一下。谢谢。
compilation problem:">Exception in thread "main" java.lang.Error: Unresolved compilation problem:
import java.time.*;rnrnpackage day04;rnrnrnpublic class Calendar rnrn public static void main(String[] args)rn rn LocalDate date = LocalDate.now();rn int month = date.getMonthValue();rn int today = date.getDayOfMonth();rn rn date = date.minusDays(today - 1);//set to <em>start</em> of monthrn DayOfWeek weekday = date.getDayOfWeek();rn int value = weekday.getValue();//1=monday,...,7=sundayrn rn System.out.println("Mon Tue Wed Thu Fri Sat Sun");rn for(int i = 0;i < value;i++)rn System.out.println(" ");rn while (date.getMonthValue() == month)rn rn System.out.printf("%3d",date.getDayOfMonth());rn if (date.getDayOfMonth() == today)rn System.out.print("*");rn else rn System.out.print(" ");rn date = date.plusDays(1);rn if (date.getDayOfWeek().getValue() == 1)rn System.out.println();rn rn if (date.getDayOfWeek().getValue() != 1)rn System.out.println();rn rn rnrn编译报警:rnException in <em>thread</em> "main" java.lang.Error: Unresolved <em>compilation</em> <em>problem</em>: rnrn at day04.Calendar.main(Calendar.java:13)rnrn清空过Project也没用,请各路大神指教。
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request.setAttribute 语句前总显示红色感叹号解决办法 HTTP Status 500 -
HTTP Status 500 - <em>type</em> Exception report message description The server encountered an internal error () that prevented it from fulfilling this request. exception javax.servlet.ServletException: Servlet execution threw an exception root cause java.lang.Error: Unresolved <em>compilation</em> <em>problem</em>: The <em>method</em> setAttribute(String, Object) in the <em>type</em> ServletRequest is not applicable for the arguments (String, double) y2ssh.sg.chp1.action.AddAction.execute(AddAction.java:18) y2ssh.sg.chp1.framework.Controller.doGet(Controller.java:25) y2ssh.sg.chp1.framework.Controller.doPost(Controller.java:33) javax.servlet.http.HttpServlet.service(HttpServlet.java:637) javax.servlet.http.HttpServlet.service(HttpServlet.java:717)解决办法:
compilation problems:">Exception in thread "main" java.lang.Error: Unresolved compilation problems:
出现这种报错信息:Exception in <em>thread</em> "main" java.lang.Error: Unresolved <em>compilation</em> <em>problem</em>s: rn AbstractTablemodel cannot be resolvedrn abstracttablemodel cannot be resolved to a <em>type</em>rn The <em>method</em> SetReorderingallowed(boolean) is undefined for the <em>type</em> TableColumnModelrnrn at reportdatacreat.(reportdatacreat.java:37)rn at reportdatacreat.main(reportdatacreat.java:97)rn附上代码:import java.awt.*; rn import java.awt.event.*; rn import javax.swing.*; rn import javax.swing.event.*; rn //import java.io.file; rn import javax.swing.table.*; rn import java.util.*; rn import javax.swing.border.*; rn rn public class reportdatacreat extends JFrame rn rn private JLabel label1=new JLabel ("报表格式文件"); rn private JLabel label2=new JLabel ("文件保存到"); rn private JButton button1=new JButton ("浏览"); rn private JButton button2=new JButton ("浏览"); rn private JButton button3=new JButton ("报表数据生成并显示"); rn private JButton button4=new JButton ("报表数据生成并保存"); rn private JTextField text1=new JTextField (10); rn private JTextField text2=new JTextField (10); rn private Vector vect;//声明一个向量对象 rn private JTable table=new JTable(); rn private String title[]="条件提示","条件值"; rn //abstracttablemodel tm ;//定义一个数据表模型变量 rn private JPanel jpanel1=new JPanel (); rn private JPanel jpanel2=new JPanel (); rn private JPanel jpanel3=new JPanel (); rn private JPanel jpanel3_1=new JPanel (); rn private JPanel jpanel3_2=new JPanel (); rn rn rn public reportdatacreat() rn rn /****************************************** rn 表模型的定义 rn ******************************************/ rn vect=new Vector();//实例化向量 rn AbstractTablemodel =new abstracttablemodel() rn public int getcolumncount() rn return title.length;//取得表格列数 rn public int getrowcount() rn return vect.size();//取得表格行数 rn public object getvalueat(int row,int column) rn if(!vect.isempty()) rn return rn ((vector)vect.elementat(row)).elementat(column); rn else rn return null;//取得单元格中的属性值 rn public string getcolumnname(int column) rn return title[column];//设置表格列名 rn public void setvalueat(object value,int row,int column) rn //数据模型不可编辑,该方法设置为空 rn public Class getcolumnclass(int c) rn return getvalueat(0,c).getclass(); rn //取得列所属对象类 SetAutoresizemodern ; rn JTable tm = new JTable();//生成自己的数据模型 rn table.setAutoResizeMode( JTable.AUTO_RESIZE_OFF);//生成水平滚动条 rn rn jpanel1.setLayout(new FlowLayout()); rn jpanel1.add(label1); rn jpanel1.add(text1); rn jpanel1.add(button1); rn rn TitledBorder titledborder1 = new TitledBorder(BorderFactory.createEtchedBorder(Color.white,new Color(148, 145, 140)),"数据生成条件录入"); rn jpanel2.setLayout(new FlowLayout()); rn jpanel2.setBorder(titledborder1); rn JScrollPane sp=new JScrollPane(); rn sp.getViewport().add(table,null); rn jpanel2.add(sp); rn table.getColumnModel().getColumn(0).setPreferredWidth(200); rn table.getColumnModel().getColumn(1).setPreferredWidth(200); rn table.getColumnModel().SetReorderingallowed(false); rn rn rn jpanel3_1.setLayout(new FlowLayout()); rn jpanel3_1.add(label2); rn jpanel3_1.add(text2); rn jpanel3_1.add(button2); rn jpanel3_2.setLayout(new FlowLayout()); rn jpanel3_2.add(button3); rn jpanel3_2.add(button4); rn jpanel3.setLayout(new GridLayout(2,1)); rn jpanel3.add(jpanel3_1); rn jpanel3.add(jpanel3_2); rn rn this.getContentPane().setLayout(new BorderLayout()); rn this.getContentPane().add(jpanel1,"north"); rn this.getContentPane().add(jpanel2,"center"); rn this.getContentPane().add(jpanel3,"south"); rn //this.setresizable(false); rn this.setSize(500,300); rn this.setLocation(120,10); rn this.show(); rn rn rn public static void main(String args[]) rn reportdatacreat msb =new reportdatacreat(); rn rn rn rn
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cannot be resolvedrn HttpSessionEvent cannot be resolved to a <em>type</em>rn HttpSession cannot be resolved to a <em>type</em>rnrn at com.o3eie.util.SessionEventListener.(SessionEventListener.java:5)rn at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)rn at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)rn at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)rn at java.lang.reflect.Constructor.newInstance(Constructor.java:513)rn at java.lang.Class.newInstance0(Class.java:355)rn at java.lang.Class.newInstance(Class.java:308)rn at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3712)rn at org.apache.catalina.core.StandardContext.<em>start</em>(StandardContext.java:4211)rn at org.apache.catalina.core.ContainerBase.<em>start</em>(ContainerBase.java:1013)rn at org.apache.catalina.core.StandardHost.<em>start</em>(StandardHost.java:718)rn at org.apache.catalina.core.ContainerBase.<em>start</em>(ContainerBase.java:1013)rn at org.apache.catalina.core.StandardEngine.<em>start</em>(StandardEngine.java:442)rn at org.apache.catalina.core.StandardService.<em>start</em>(StandardService.java:450)rn at org.apache.catalina.core.StandardServer.<em>start</em>(StandardServer.java:709)rn at org.apache.catalina.<em>start</em>up.Catalina.<em>start</em>(Catalina.java:551)rn at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)rn at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)rn at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)rn at java.lang.reflect.Method.invoke(Method.java:597)rn at org.apache.catalina.<em>start</em>up.Bootstrap.<em>start</em>(Bootstrap.java:294)rn at org.apache.catalina.<em>start</em>up.Bootstrap.main(Bootstrap.java:432)rn([localhost].[/o3] 3714) Error configuring application listener of class com.o3eie.util.ApplicationEventListenerrnjava.lang.Error: Unresolved <em>compilation</em> <em>problem</em>s: rn The import javax.servlet.ServletContextEvent cannot be resolvedrn The import javax.servlet.ServletContextListener cannot be resolvedrn ServletContextListener cannot be resolved to a <em>type</em>rn ServletContextEvent cannot be resolved to a <em>type</em>rn ServletContextEvent cannot be resolved to a <em>type</em>rnrn at com.o3eie.util.ApplicationEventListener.(ApplicationEventListener.java:11)rn at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)rn at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)rn at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)rn at java.lang.reflect.Constructor.newInstance(Constructor.java:513)rn at java.lang.Class.newInstance0(Class.java:355)rn at java.lang.Class.newInstance(Class.java:308)rn at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3712)rn at org.apache.catalina.core.StandardContext.<em>start</em>(StandardContext.java:4211)rn at org.apache.catalina.core.ContainerBase.<em>start</em>(ContainerBase.java:1013)rn at org.apache.catalina.core.StandardHost.<em>start</em>(StandardHost.java:718)rn at org.apache.catalina.core.ContainerBase.<em>start</em>(ContainerBase.java:1013)rn at org.apache.catalina.core.StandardEngine.<em>start</em>(StandardEngine.java:442)rn at org.apache.catalina.core.StandardService.<em>start</em>(StandardService.java:450)rn at org.apache.catalina.core.StandardServer.<em>start</em>(StandardServer.java:709)rn at org.apache.catalina.<em>start</em>up.Catalina.<em>start</em>(Catalina.java:551)rn at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)rn at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)rn at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)rn at java.lang.reflect.Method.invoke(Method.java:597)rn at org.apache.catalina.<em>start</em>up.Bootstrap.<em>start</em>(Bootstrap.java:294)rn at org.apache.catalina.<em>start</em>up.Bootstrap.main(Bootstrap.java:432)rn([localhost].[/o3] 3714) Error configuring application listener of class com.safenet.sentinel.OnlineCounterListenerrnjava.lang.Error: Unresolved <em>compilation</em> <em>problem</em>s: rn The <em>type</em> javax.servlet.http.HttpSession cannot be resolved. It is indirectly referenced from required .class filesrn The import javax.servlet.http.HttpSession cannot be resolvedrn The import javax.servlet.http.HttpSessionEvent cannot be resolvedrn The import javax.servlet.http.HttpSessionListener cannot be resolvedrn HttpSessionListener cannot be resolved to a <em>type</em>rn HttpSessionEvent cannot be resolved to a <em>type</em>rn HttpSessionEvent cannot be resolved to a <em>type</em>rn HttpSession cannot be resolved to a <em>type</em>rnrn at com.safenet.sentinel.OnlineCounterListener.(OnlineCounterListener.java:1)rn at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)rn at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)rn at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)rn at java.lang.reflect.Constructor.newInstance(Constructor.java:513)rn at java.lang.Class.newInstance0(Class.java:355)rn at java.lang.Class.newInstance(Class.java:308)rn at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3712)rn at org.apache.catalina.core.StandardContext.<em>start</em>(StandardContext.java:4211)rn at org.apache.catalina.core.ContainerBase.<em>start</em>(ContainerBase.java:1013)rn at org.apache.catalina.core.StandardHost.<em>start</em>(StandardHost.java:718)rn at org.apache.catalina.core.ContainerBase.<em>start</em>(ContainerBase.java:1013)rn at org.apache.catalina.core.StandardEngine.<em>start</em>(StandardEngine.java:442)rn at org.apache.catalina.core.StandardService.<em>start</em>(StandardService.java:450)rn at org.apache.catalina.core.StandardServer.<em>start</em>(StandardServer.java:709)rn at org.apache.catalina.<em>start</em>up.Catalina.<em>start</em>(Catalina.java:551)rn at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)rn at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)rn at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)rn at java.lang.reflect.Method.invoke(Method.java:597)rn at org.apache.catalina.<em>start</em>up.Bootstrap.<em>start</em>(Bootstrap.java:294)rn at org.apache.catalina.<em>start</em>up.Bootstrap.main(Bootstrap.java:432)rnrnrn 求各位大虾给点宝贵意见。。是不是就是缺包的问题。好像我导入你进入还是报错。。src 下面还是红叉出现。。但是在公司里面同样的IDE,同意的项目却可以正常编译.. 。。忘各位虾仁多多发表意见。。小弟不甚感激!!!
Unresolved compilation problems
package InOutPut;rn//A tiny editor.rnimport java.io.*;rnpublic class TinyEdit rn public static void main(String args[])rn throws IOExceptionrn rn //create a BufferedReader using System.inrn BufferedReader br=new BufferedReader(new InputStreamReader(System.in));rn String srt[]=new String[100];rn System.out.println("Enter lines of text.");rn System.out.println("Enter 'stop' to quit.");rnrn for(int i=0;i java.lang.Error: Unresolved <em>compilation</em> <em>problem</em>s: rn str cannot be resolvedrn str cannot be resolvedrn str cannot be resolvedrnrn at InOutPut.TinyEdit.main(TinyEdit.java:16)
java.lang.Error: Unresolved compilation problems
严重: Exception <em>start</em>ing filter UserLoginrnjava.lang.Error: Unresolved <em>compilation</em> <em>problem</em>s: rn The import javax.servlet.FilterChain cannot be resolvedrn The import javax.servlet.FilterConfig cannot be resolvedrn The import javax.servlet.ServletException cannot be resolvedrn The import javax.servlet.ServletRequest cannot be resolvedrn The import javax.servlet.ServletResponse cannot be resolvedrn The import javax.servlet.http.HttpServletRequest cannot be resolvedrn The import javax.servlet.http.HttpServletResponse cannot be resolvedrn The hierarchy of the <em>type</em> CanUserLogin is inconsistentrn ServletRequest cannot be resolved to a <em>type</em>rn ServletResponse cannot be resolved to a <em>type</em>rn FilterChain cannot be resolved to a <em>type</em>rn ServletException cannot be resolved to a <em>type</em>rn HttpServletRequest cannot be resolved to a <em>type</em>rn HttpServletRequest cannot be resolved to a <em>type</em>rn HttpServletResponse cannot be resolved to a <em>type</em>rn HttpServletResponse cannot be resolved to a <em>type</em>rn FilterConfig cannot be resolved to a <em>type</em>rn ServletException cannot be resolved to a <em>type</em>rnrn at com.back.filter.CanUserLogin.(CanUserLogin.java:5)rn at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)rn at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)rn at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)rn at java.lang.reflect.Constructor.newInstance(Constructor.java:513)rn at java.lang.Class.newInstance0(Class.java:355)rn at java.lang.Class.newInstance(Class.java:308)rn at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:275)rn at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:422)rn at org.apache.catalina.core.ApplicationFilterConfig.(ApplicationFilterConfig.java:115)rn at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:3838)rn at org.apache.catalina.core.StandardContext.<em>start</em>(StandardContext.java:4488)rn at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)rn at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)rn at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:546)rn at org.apache.catalina.<em>start</em>up.HostConfig.deployDirectory(HostConfig.java:1041)rn at org.apache.catalina.<em>start</em>up.HostConfig.deployDirectories(HostConfig.java:964)rn at org.apache.catalina.<em>start</em>up.HostConfig.deployApps(HostConfig.java:502)rn at org.apache.catalina.<em>start</em>up.HostConfig.<em>start</em>(HostConfig.java:1277)rn at org.apache.catalina.<em>start</em>up.HostConfig.lifecycleEvent(HostConfig.java:321)rn at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)rn at org.apache.catalina.core.ContainerBase.<em>start</em>(ContainerBase.java:1053)rn at org.apache.catalina.core.StandardHost.<em>start</em>(StandardHost.java:785)rn at org.apache.catalina.core.ContainerBase.<em>start</em>(ContainerBase.java:1045)rn at org.apache.catalina.core.StandardEngine.<em>start</em>(StandardEngine.java:443)rn at org.apache.catalina.core.StandardService.<em>start</em>(StandardService.java:519)rn at org.apache.catalina.core.StandardServer.<em>start</em>(StandardServer.java:710)rn at org.apache.catalina.<em>start</em>up.Catalina.<em>start</em>(Catalina.java:581)rn at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)rn at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)rn at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)rn at java.lang.reflect.Method.invoke(Method.java:597)rn at org.apache.catalina.<em>start</em>up.Bootstrap.<em>start</em>(Bootstrap.java:289)rn at org.apache.catalina.<em>start</em>up.Bootstrap.main(Bootstrap.java:414)rn2015-9-23 11:28:37 org.apache.catalina.core.StandardContext filterStartrn严重: Exception <em>start</em>ing filter NyWebFilerrnjava.lang.Error: Unresolved <em>compilation</em> <em>problem</em>s: rn The import javax.servlet.FilterChain cannot be resolvedrn The import javax.servlet.FilterConfig cannot be resolvedrn The import javax.servlet.ServletException cannot be resolvedrn The import javax.servlet.ServletRequest cannot be resolvedrn The import javax.servlet.ServletResponse cannot be resolvedrn The import javax.servlet.http.HttpServletRequest cannot be resolvedrn The import javax.servlet.http.HttpServletResponse cannot be resolvedrn The import javax.servlet.http.HttpSession cannot be resolvedrn The import com.customer.CorpDomain cannot be resolvedrn The hierarchy of the <em>type</em> NyWebFiler is inconsistentrn The <em>type</em> javax.servlet.Filter cannot be resolved. It is indirectly referenced from required .class filesrn HttpServletRequest cannot be resolved to a <em>type</em>rn HttpServletResponse cannot be resolved to a <em>type</em>rn HttpSession cannot be resolved to a <em>type</em>rn HttpServletRequest cannot be resolved to a <em>type</em>rn HttpServletResponse cannot be resolved to a <em>type</em>rn HttpServletRequest cannot be resolved to a <em>type</em>rn HttpServletResponse cannot be resolved to a <em>type</em>rn FilterChain cannot be resolved to a <em>type</em>rn ServletException cannot be resolved to a <em>type</em>rn CorpDomain cannot be resolvedrn HttpSession cannot be resolved to a <em>type</em>rn CorpDomain cannot be resolvedrn ServletRequest cannot be resolved to a <em>type</em>rn ServletResponse cannot be resolved to a <em>type</em>rn FilterChain cannot be resolved to a <em>type</em>rn ServletException cannot be resolved to a <em>type</em>rn HttpServletRequest cannot be resolved to a <em>type</em>rn HttpServletRequest cannot be resolved to a <em>type</em>rn HttpServletResponse cannot be resolved to a <em>type</em>rn HttpServletResponse cannot be resolved to a <em>type</em>rn CorpDomain cannot be resolvedrn CorpDomain cannot be resolvedrn HttpSession cannot be resolved to a <em>type</em>rn CorpDomain cannot be resolvedrn CorpDomain cannot be resolvedrn HttpServletRequest cannot be resolved to a <em>type</em>rn CorpDomain cannot be resolvedrn CorpDomain cannot be resolvedrn CorpDomain cannot be resolvedrn HttpServletRequest cannot be resolved to a <em>type</em>rn FilterConfig cannot be resolved to a <em>type</em>rn ServletException cannot be resolved to a <em>type</em>rnrn at com.back.filter.NyWebFiler.(NyWebFiler.java:7)rn at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)rn at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)rn at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)rn at java.lang.reflect.Constructor.newInstance(Constructor.java:513)rn at java.lang.Class.newInstance0(Class.java:355)rn at java.lang.Class.newInstance(Class.java:308)rn at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:275)rn at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:422)rn at org.apache.catalina.core.ApplicationFilterConfig.(ApplicationFilterConfig.java:115)rn at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:3838)rn at org.apache.catalina.core.StandardContext.<em>start</em>(StandardContext.java:4488)rn at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)rn at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)rn at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:546)rn at org.apache.catalina.<em>start</em>up.HostConfig.deployDirectory(HostConfig.java:1041)rn at org.apache.catalina.<em>start</em>up.HostConfig.deployDirectories(HostConfig.java:964)rn at org.apache.catalina.<em>start</em>up.HostConfig.deployApps(HostConfig.java:502)rn at org.apache.catalina.<em>start</em>up.HostConfig.<em>start</em>(HostConfig.java:1277)rn at org.apache.catalina.<em>start</em>up.HostConfig.lifecycleEvent(HostConfig.java:321)rn at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)rn at org.apache.catalina.core.ContainerBase.<em>start</em>(ContainerBase.java:1053)rn at org.apache.catalina.core.StandardHost.<em>start</em>(StandardHost.java:785)rn at org.apache.catalina.core.ContainerBase.<em>start</em>(ContainerBase.java:1045)rn at org.apache.catalina.core.StandardEngine.<em>start</em>(StandardEngine.java:443)rn at org.apache.catalina.core.StandardService.<em>start</em>(StandardService.java:519)rn at org.apache.catalina.core.StandardServer.<em>start</em>(StandardServer.java:710)rn at org.apache.catalina.<em>start</em>up.Catalina.<em>start</em>(Catalina.java:581)rn at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)rn at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)rn at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)rn at java.lang.reflect.Method.invoke(Method.java:597)rn at org.apache.catalina.<em>start</em>up.Bootstrap.<em>start</em>(Bootstrap.java:289)rn at org.apache.catalina.<em>start</em>up.Bootstrap.main(Bootstrap.java:414)rn2015-9-23 11:28:37 org.apache.catalina.core.StandardContext <em>start</em>rn严重: Error filterStartrn2015-9-23 11:28:37 org.apache.catalina.core.StandardContext <em>start</em>rn严重: Context [/cqzxsyxx] <em>start</em>up failed due to previous errorsrn2015-9-23 11:28:37 org.apache.catalina.loader.WebappClassLoader clearReferencesJdbcrn严重: A web application registered the JBDC driver [com.mysql.jdbc.Driver] but failed to unregister it when the web application was stopped. To prevent a memory leak, the JDBC Driver has been forcibly unregistered.rnrn求解决方法,对myeclipse配置不是很了解 求详解 不甚感激
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求助:java.lang.Error:Unresolved compilation problems:
java.lang.Error: Unresolved <em>compilation</em> <em>problem</em>s: rn <em>type</em> cannot be resolvedrn Syntax error on token ",", delete this tokenrnrnrn求助,此错误是什么问题导致的,各种搜索都找不到答案,紧急啊,请各位大神帮助。
compilation problem:">为什么下面的连接sql server2000程序会有Exception in thread "main" java.lang.Error: Unresolved compilation problem:
为什么下面的程序会有这样的报错信息Exception in <em>thread</em> "main" java.lang.Error: Unresolved <em>compilation</em> <em>problem</em>: Syntax error on token "Catch", catch expected是不是Eclipse的配置问题?我已经加载了sql server2000驱动和给sql server 打了补丁了rnpackage rm;rnrnimport java.sql.*;rnrnpublic class TestDB rnpublic static void main(String[] args) rnString driverName = "com.microsoft.jdbc.sqlserver.SQLServerDriver";rnString dbURL = "jdbc:microsoft:sqlserver://localhost:1433; DatabaseName=rm";rnString userName ="sa";rnString userPwd = "123456";rnConnection dbConn ;rnrntry rnClass.forName(driverName);rndbConn = DriverManager.getConnection(dbURL, userName, userPwd);rnSystem.out.println("Connection Successful!");rnrnCatch (Exception e) rne.printStackTrace();rnrnrnrn
compilation problem:">为什么会报这样的错误:Exception in thread "main" java.lang.Error: Unresolved compilation problem:
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