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Java JasperException springframework.org/tags/form只能在嵌入式Tomcat中解析

java spring jsp tomcat

Java JasperException springframework.org/tags/form只能在嵌入式Tomcat中解析,java,spring,jsp,tomcat,embedded-tomcat-8,Java,Spring,Jsp,Tomcat,Embedded Tomcat 8,为什么在嵌入式Tomcat中使用会出现以下错误？如果我尝试使用相同的JSP和相同的POM，但没有嵌入依赖项，并将其部署到Tomcat服务器上，那么就不会有任何错误 我在这里读到了一些问题和类似的问题，一些答案建议添加某些依赖项。我试过了，但老实说，我相信问题与嵌入式Tomcat直接相关 这让我想知道，在应用程序启动期间，我缺少一些配置，但在我的情况下，我不知道在应用程序启动期间还可以设置什么 初级课程： public class App { private static File get

为什么在嵌入式Tomcat中使用会出现以下错误？如果我尝试使用相同的JSP和相同的POM，但没有嵌入依赖项，并将其部署到Tomcat服务器上，那么就不会有任何错误

我在这里读到了一些问题和类似的问题，一些答案建议添加某些依赖项。我试过了，但老实说，我相信问题与嵌入式Tomcat直接相关

这让我想知道，在应用程序启动期间，我缺少一些配置，但在我的情况下，我不知道在应用程序启动期间还可以设置什么

初级课程：

public class App
{
    private static File getRootFolder() {
        try {
            File root;
            String runningJarPath = App.class.getProtectionDomain().getCodeSource().getLocation().toURI().getPath().replaceAll("\\\\", "/");
            int lastIndexOf = runningJarPath.lastIndexOf("/target/");
            if (lastIndexOf < 0) {
                root = new File("");
            } else {
                root = new File(runningJarPath.substring(0, lastIndexOf));
            }
            System.out.println("application resolved root folder: " + root.getAbsolutePath());
            return root;
        } catch (URISyntaxException ex) {
            throw new RuntimeException(ex);
        }
    }
    public static void main(String[] args) throws Exception {
        File root = getRootFolder();
System.setProperty("org.apache.catalina.startup.EXIT_ON_INIT_FAILURE", "true");
        Tomcat tomcat = new Tomcat();
        Path tempPath = Files.createTempDirectory("tomcat-base-dir");
        tomcat.setBaseDir(tempPath.toString());
        //The port that we should run on can be set into an environment variable
        //Look for that variable and default to 8080 if it isn't there.
        String webPort = System.getenv("PORT");
        if (webPort == null || webPort.isEmpty()) {
            webPort = "8080";
        }
        tomcat.setPort(Integer.valueOf(webPort));
        File webContentFolder = new File(root.getAbsolutePath(), "src/main/webapp/");
        if (!webContentFolder.exists()) {
            webContentFolder = Files.createTempDirectory("default-doc-base").toFile();
        }
        StandardContext ctx = (StandardContext) tomcat.addWebapp("", webContentFolder.getAbsolutePath());
        //Set execution independent of current thread context classloader (compatibility with exec:java mojo)
        ctx.setParentClassLoader(App.class.getClassLoader());
        //Disable TLD scanning by default
        if (System.getProperty(Constants.SKIP_JARS_PROPERTY) == null && System.getProperty(Constants.SKIP_JARS_PROPERTY) == null) {
            System.out.println("disabling TLD scanning");
            StandardJarScanFilter jarScanFilter = (StandardJarScanFilter) ctx.getJarScanner().getJarScanFilter();
            jarScanFilter.setTldSkip("*");
       }
        System.out.println("configuring app with basedir: " + webContentFolder.getAbsolutePath());
        // Declare an alternative location for your "WEB-INF/classes" dir
        // Servlet 3.0 annotation will work
        File additionWebInfClassesFolder = new File(root.getAbsolutePath(), "target/classes");
        WebResourceRoot resources = new StandardRoot(ctx);
        WebResourceSet resourceSet;
        if (additionWebInfClassesFolder.exists()) {
            resourceSet = new DirResourceSet(resources, "/WEB-INF/classes", additionWebInfClassesFolder.getAbsolutePath(), "/");
            System.out.println("loading WEB-INF resources from as '" + additionWebInfClassesFolder.getAbsolutePath() + "'");
        } else {
            resourceSet = new EmptyResourceSet(resources);
        }
        resources.addPreResources(resourceSet);
        ctx.setResources(resources);
        tomcat.start();
        tomcat.getServer().await();
    }
}

公共类应用程序
{
私有静态文件getRootFolder（）{
试一试{
文件根目录；
字符串runningJarPath=App.class.getProtectionDomain（）.getCodeSource（）.getLocation（）.Tori（）.getPath（）.replaceAll（“\\\\”，“/”）；
int lastIndexOf=runningJarPath.lastIndexOf（“/target/”）；
如果（lastIndexOf<0）{
root=新文件（“”）；
}否则{
root=新文件（runningJarPath.substring（0，lastIndexOf））；
}
System.out.println（“应用程序解析的根文件夹：+root.getAbsolutePath（））；
返回根；
}捕获（URISyntaxException-ex）{
抛出新的运行时异常（ex）；
}
}
公共静态void main（字符串[]args）引发异常{
文件根=getRootFolder（）；
System.setProperty（“org.apache.catalina.startup.EXIT_ON_INIT_FAILURE”，“true”）；
Tomcat Tomcat=新的Tomcat（）；
Path tempPath=Files.createTempDirectory（“tomcat基本目录”）；
tomcat.setBaseDir（tempPath.toString（））；
//我们应该运行的端口可以设置为环境变量
//查找该变量，如果不存在，则默认为8080。
字符串webPort=System.getenv（“端口”）；
if（webPort==null | | webPort.isEmpty（））{
webPort=“8080”；
}
setPort（Integer.valueOf（webPort））；
File webContentFolder=新文件（root.getAbsolutePath（），“src/main/webapp/”；
如果（！webContentFolder.exists（））{
webContentFolder=Files.createTempDirectory（“默认文档库”）.toFile（）；
}
StandardContext ctx=（StandardContext）tomcat.addWebapp（“，webContentFolder.getAbsolutePath（））；
//设置独立于当前线程上下文类加载器的执行（与exec:javamojo兼容）
setParentClassLoader（App.class.getClassLoader（））；
//默认情况下禁用TLD扫描
if（System.getProperty（Constants.SKIP\u JARS\u PROPERTY）==null&&System.getProperty（Constants.SKIP\u JARS\u PROPERTY）==null）{
System.out.println（“禁用TLD扫描”）；
StandardJarScanFilter jarScanFilter=（StandardJarScanFilter）ctx.getJarScanner（）.getJarScanFilter（）；
jarScanFilter.SettledSkip（“*”）；
}
System.out.println（“使用basedir配置应用程序：+webContentFolder.getAbsolutePath（））；
//为“WEB-INF/classes”目录声明一个替代位置
//Servlet3.0注释将起作用
File additionWebInfClassesFolder=新文件（root.getAbsolutePath（），“目标/类”）；
WebResourceRoot资源=新的标准根（ctx）；
网络资源集；
如果（additionWebInfClassesFolder.exists（））{
resourceSet=new-DirResourceSet（参考资料，“/WEB-INF/classes”，additionWebInfClassesFolder.getAbsolutePath（），“/”；
System.out.println（“从as'+additionWebInfClassesFolder.getAbsolutePath（）+“'加载WEB-INF资源”；
}否则{
resourceSet=新的EmptyResourceSet（资源）；
}
resources.addPreResources（resourceSet）；
ctx.setResources（资源）；
tomcat.start（）；
tomcat.getServer（）.await（）；
}
}
错误：

    org.apache.jasper.JasperException: The absolute uri: http://www.springframework.org/tags/form cannot be resolved in either web.xml or the jar files deployed with this application
       org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:55)
    org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:277)
           org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:75)
            org.apache.jasper.compiler.TagLibraryInfoImpl.generateTldResourcePath(TagLibraryInfoImpl.java:243)
            org.apache.jasper.compiler.TagLibraryInfoImpl.<init>(TagLibraryInfoImpl.java:124)
           org.apache.jasper.compiler.Parser.parseTaglibDirective(Parser.java:421)
            org.apache.jasper.compiler.Parser.parseDirective(Parser.java:479)
            org.apache.jasper.compiler.Parser.parseElements(Parser.java:1435)
            org.apache.jasper.compiler.Parser.parse(Parser.java:139)
           org.apache.jasper.compiler.ParserController.doParse(ParserController.java:227)
         org.apache.jasper.compiler.ParserController.parse(ParserController.java:100)
            org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:199)
            org.apache.jasper.compiler.Compiler.compile(Compiler.java:356)
            org.apache.jasper.compiler.Compiler.compile(Compiler.java:336)
            org.apache.jasper.compiler.Compiler.compile(Compiler.java:323)
            org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:585)
           org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:363)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:396)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:340)
            javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:168)
org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:303)
org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1243)
org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1027)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:971)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:968)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:859)
            javax.servlet.http.HttpServlet.service(HttpServlet.java:622)
    org.apache.jasper.JasperException: The absolute uri: http://www.springframework.org/tags/form cannot be resolved in either web.xml or the jar files deployed with this application
org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:55)
org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:277)
org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:75)
org.apache.jasper.compiler.TagLibraryInfoImpl.generateTldResourcePath(TagLibraryInfoImpl.java:243)
            org.apache.jasper.compiler.TagLibraryInfoImpl.<init>(TagLibraryInfoImpl.java:124)
org.apache.jasper.compiler.Parser.parseTaglibDirective(Parser.java:421)
org.apache.jasper.compiler.Parser.parseDirective(Parser.java:479)
org.apache.jasper.compiler.Parser.parseElements(Parser.java:1435)
            org.apache.jasper.compiler.Parser.parse(Parser.java:139)
org.apache.jasper.compiler.ParserController.doParse(ParserController.java:227)
org.apache.jasper.compiler.ParserController.parse(ParserController.java:100)
org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:199)
            org.apache.jasper.compiler.Compiler.compile(Compiler.java:356)
            org.apache.jasper.compiler.Compiler.compile(Compiler.java:336)
            org.apache.jasper.compiler.Compiler.compile(Compiler.java:323)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:585)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:363)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:396)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:340)
            javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:168)
org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:303)
org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1243)
org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1027)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:971)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:968)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:859)
            javax.servlet.http.HttpServlet.service(HttpServlet.java:622)
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:844)
            javax.servlet.http.HttpServlet.service(HttpServlet.java:729)      org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:844)
            javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

org.apache.jasper.jaspereException:绝对uri:http://www.springframework.org/tags/form 无法在web.xml或与此应用程序一起部署的jar文件中解析
org.apache.jasper.compiler.DefaultErrorHandler.jsperor（DefaultErrorHandler.java:55）
org.apache.jasper.compiler.ErrorDispatcher.dispatch（ErrorDispatcher.java:277）
org.apache.jasper.compiler.ErrorDispatcher.jsperor（ErrorDispatcher.java:75）
org.apache.jasper.compiler.TagLibraryInfoImpl.generateTldResourcePath（TagLibraryInfoImpl.java:243）
TagLibraryInfoImpl.java:124）
org.apache.jasper.compiler.Parser.parseTaglibDirective（Parser.java:421）
org.apache.jasper.compiler.Parser.parseDirective（Parser.java:479）
org.apache.jasper.compiler.Parser.parseElements（Parser.java:1435）
org.apache.jasper.compiler.Parser.parse（Parser.java:139）
org.apache.jasper.compiler.ParserController.doParse（ParserController.java:227）
org.apache.jasper.compiler.ParserController.parse（ParserController.java:100）
org.apache.jasper.compiler.compiler.generateJava（compiler.java:199）
org.apache.jasper.compiler.compiler.compile（compiler.java:356）
org.apache.jasper.compiler.compiler.compile（compiler.java:336）
org.apache.jasper.compiler.compiler.compile（compiler.java:323）
org.apache.jasper.JspCompilationContext.compile（JspCompilationContext.java:585）
org.apache.jasper.servlet.JspServletWrapper.service（JspServletWrapper.java:363）
org.apache.jasper.servlet.JspServlet.serviceJspFile（JspServlet.java:396）
org.apache.jasper.servlet.JspServlet.service（JspServlet.java:340）
javaservlet.http.HttpServlet.service（HttpServlet.java:729）
org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel（InternalResourceView.java:168）
org.springframework.web.servlet.view.AbstractView.render（AbstractView.java:3

<%@ taglib prefix="form" uri="http://www.springframework.org/tags/form"%>
<html>
<body>
<h2>Uploading a file.. </h2>
      <form:form method="POST" commandName="file"     enctype="multipart/form-data">
              Upload your file please:
              <input type="file" name="file" />
              <input type="submit" value="upload2" />
              <form:errors path="file" cssStyle="color: #ff0000;" />
       </form:form>
</body>
</html>



<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
       <modelVersion>4.0.0</modelVersion>
       <groupId>com.myCompany</groupId>
       <artifactId>AuthFileUpload</artifactId>
       <version>0.0.1-SNAPSHOT</version>
       <packaging>jar</packaging>
       <name>AuthFileUpload</name>
       <url>http://maven.apache.org</url>
       <properties>
              <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
              <tomcat.version>8.0.32</tomcat.version>
              <java.version>1.8</java.version>
              <maven.compiler.plugin.version>2.1</maven.compiler.plugin.version>
              <spring.version>4.2.5.RELEASE</spring.version>
       </properties>
       <dependencies>
              <dependency>
                     <groupId>org.springframework</groupId>
                     <artifactId>spring-webmvc</artifactId>
                     <version>${spring.version}</version>
              </dependency>
              <dependency>
                     <groupId>org.apache.tomcat.embed</groupId>
                     <artifactId>tomcat-embed-core</artifactId>
                     <version>${tomcat.version}</version>
              </dependency>
              <dependency>
                     <groupId>org.apache.tomcat.embed</groupId>
                     <artifactId>tomcat-embed-logging-juli</artifactId>
                     <version>${tomcat.version}</version>
              </dependency>
              <dependency>
                     <groupId>org.apache.tomcat.embed</groupId>
                     <artifactId>tomcat-embed-jasper</artifactId>
                     <version>${tomcat.version}</version>
              </dependency>
              <dependency>
                     <groupId>org.apache.tomcat</groupId>
                     <artifactId>tomcat-jasper</artifactId>
                     <version>${tomcat.version}</version>
              </dependency>
              <dependency>
                     <groupId>org.apache.tomcat</groupId>
                     <artifactId>tomcat-jasper-el</artifactId>
                     <version>${tomcat.version}</version>
              </dependency>
              <dependency>
                     <groupId>org.apache.tomcat</groupId>
                     <artifactId>tomcat-jsp-api</artifactId>
                     <version>${tomcat.version}</version>
              </dependency>

              <!-- the next dependencies I added because I read in somewhere someone has fixed similar error by adding them-->
              <dependency>
                     <groupId>commons-fileupload</groupId>
                     <artifactId>commons-fileupload</artifactId>
                     <version>1.3.1</version>
              </dependency>
              <dependency>
                     <groupId>javax.servlet</groupId>
                     <artifactId>jstl</artifactId>
                     <version>1.2</version>
              </dependency>
              <dependency>
                     <groupId>javax.servlet</groupId>
                     <artifactId>servlet-api</artifactId>
                     <version>2.5</version>
              </dependency>
              <dependency>
                     <groupId>taglibs</groupId>
                     <artifactId>standard</artifactId>
                     <version>1.1.2</version>
              </dependency>
              <dependency>
                     <groupId>org.springframework.security</groupId>
                     <artifactId>spring-security-taglibs</artifactId>
                     <version>4.0.4.RELEASE</version>
              </dependency>
       </dependencies>
       <build>
              <finalName>embeddedTomcatSample</finalName>
              <plugins>
                     <plugin>
                           <groupId>org.apache.maven.plugins</groupId>
                           <artifactId>maven-compiler-plugin</artifactId>
                           <version>${maven.compiler.plugin.version}</version>
                           <configuration>
                                  <source>${java.version}</source>
                                  <target>${java.version}</target>
                           </configuration>
                     </plugin>
                     <plugin>
                           <groupId>org.codehaus.mojo</groupId>
                           <artifactId>appassembler-maven-plugin</artifactId>
                           <version>1.1.1</version>
                           <configuration>
<assembleDirectory>target</assembleDirectory>
                                  <programs>
                                         <program>
<mainClass>launch.Main</mainClass>
                                                <name>webapp</name>
                                         </program>
                                  </programs>
                           </configuration>
                           <executions>
                                  <execution>
                                         <phase>package</phase>
                                         <goals>
                                                <goal>assemble</goal>
                                         </goals>
                                  </execution>
                           </executions>
                     </plugin>
              </plugins>
       </build>
</project>



   if (System.getProperty(Constants.SKIP_JARS_PROPERTY) == null && System.getProperty(Constants.SKIP_JARS_PROPERTY) == null) {
        System.out.println("disabling TLD scanning");
        StandardJarScanFilter jarScanFilter = (StandardJarScanFilter) ctx.getJarScanner().getJarScanFilter();
        jarScanFilter.setTldSkip("*");
   }