【发布时间】：2017-04-05 12:30:43
【问题描述】：
我在尝试通过 tomcat 7 部署 web 应用时收到此错误。
jsp文件名analysis.jsp这是错误：
Apr 05, 2017 3:05:39 PM org.apache.catalina.core.StandardContext loadOnStartup
SEVERE: Servlet [analyserServlet] in web application [/MWE] threw load() exception
org.apache.jasper.JasperException: Unable to compile class for JSP:
An error occurred at line: [26] in the generated java file: [/usr/share/tomcat/work/Catalina/localhost/MWE/org/apache/jsp/analysis_jsp.java]
Only a type can be imported. mila.HMM.MorphMult2TaggerFormat resolves to a package
An error occurred at line: [27] in the generated java file: [/usr/share/tomcat/work/Catalina/localhost/MWE/org/apache/jsp/analysis_jsp.java]
Only a type can be imported. mila.HMM.HMM2Morph resolves to a package
An error occurred at line: [28] in the generated java file: [/usr/share/tomcat/work/Catalina/localhost/MWE/org/apache/jsp/analysis_jsp.java]
Only a type can be imported. mila.mw.PostProcessor1 resolves to a package
An error occurred at line: [29] in the generated java file: [/usr/share/tomcat/work/Catalina/localhost/MWE/org/apache/jsp/analysis_jsp.java]
Only a type can be imported. mila.mw.MWXMLTokenizer resolves to a package
An error occurred at line: 36 in the jsp file: /analysis.jsp
mila.mw.MWXMLTokenizer cannot be resolved to a type
33: String tokenizeAndAnalyze(String rawText) throws Exception {
34: StringWriter sw = new StringWriter();
35: try (InputStream ins = new ByteArrayInputStream(rawText.getBytes("UTF-8"))) {
36: new mila.mw.MWXMLTokenizer().tokenizeAndAnalyze(ins, new PrintWriter(sw));
37: }
38: StringWriter ppSW = new StringWriter();
39: try (InputStream ins = new ByteArrayInputStream(sw.toString().getBytes("UTF-8"))) {
An error occurred at line: 40 in the jsp file: /analysis.jsp
mila.mw.PostProcessor1 cannot be resolved to a type
37: }
38: StringWriter ppSW = new StringWriter();
39: try (InputStream ins = new ByteArrayInputStream(sw.toString().getBytes("UTF-8"))) {
40: new mila.mw.PostProcessor1().process(ins, new PrintWriter(ppSW));
41: }
42: return ppSW.toString();
43: }
An error occurred at line: 46 in the jsp file: /analysis.jsp
mila.HMM.MorphMult2TaggerFormat cannot be resolved to a type
43: }
44:
45: String runTagger(String xmlAnalyzed, String _tempDirectoryPath) throws Exception {
46: final String taggerFormat = new mila.HMM.MorphMult2TaggerFormat()
47: .myWEBMorp2Tagger(xmlAnalyzed, _tempDirectoryPath);
48: final String roydir = "/data/tagger/royTagger/";
49: final String probabilityDir = "/data/tagger/taggerLearningOutputFile/";
An error occurred at line: 60 in the jsp file: /analysis.jsp
mila.HMM.HMM2Morph cannot be resolved to a type
57:
58: final String xmlTaggedFilename = _tempDirectoryPath + "/tagged.xml";
59: PrintWriter pw = new PrintWriter(xmlTaggedFilename);
60: new mila.HMM.HMM2Morph().process(xmlAnalyzed, taggedFilename, pw);
61: return xmlTaggedFilename;
62: }
63:
Stacktrace:
at org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:103)
at org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:366)
at org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:494)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:379)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:354)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:341)
at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:662)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:364)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:395)
at org.apache.jasper.servlet.JspServlet.init(JspServlet.java:138)
at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1282)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1195)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1085)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5318)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5610)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:147)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:899)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:875)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:652)
at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1260)
at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:2002)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
这是来自jsp的导入部分：
<%@ page language = "java"
import = "java.lang.StringBuilder"
import = "java.io.StringWriter"
import = "java.io.PrintWriter"
import = "java.io.ByteArrayInputStream"
import = "java.io.IOException"
import = "java.io.File"
import = "java.io.BufferedReader"
import = "java.io.InputStreamReader"
import = "java.io.InputStream"
import = "java.nio.file.Files"
import = "java.nio.file.Paths"
import = "java.nio.file.StandardCopyOption"
import = "mila.HMM.MorphMult2TaggerFormat"
import = "mila.HMM.HMM2Morph"
import = "mila.mw.PostProcessor1"
import = "mila.mw.MWXMLTokenizer"
%>
在WEB-INF/lib 文件夹下，我有一个名为morphAnalyzer.jar 的JAR，它基本上是项目，它包含所有需要的类，包括导致此错误的类。
这是对 JAR 的部分 vim 查看
mila/
mila/HMM/
mila/HMM/HMM2Morph.class
mila/HMM/MorphMult2TaggerFormat.class
...
mila/mw/MWXMLMorphAnalyzer.class
mila/mw/MWXMLTokenizer.class
mila/mw/PostProcessor1.class
...
正如您所见，jar 确实包含了我需要的所有类，但由于某种原因，jsp 文件无法将它们识别为类。
P.S 没有其他包具有相同的类名（即所有类名在整个项目中都是唯一的）
我做错了什么？请帮忙。
【问题讨论】：
-
类似问题的答案建议重启Tomcat，见这里：stackoverflow.com/questions/15962709/…
-
我试过了。取消部署服务，重新启动tomcat，尝试重新部署并得到相同的错误:(
标签： java jsp tomcat web-deployment