Maven报错org.apache.jasper.JasperException: Unable to compile class for JSP

今天药忘吃喽~ 2022-10-14 01:11 171阅读 0赞

解决Jsp运行org.apache.jasper.JasperException: Unable to compile class for JSP:问题  
初学Maven就遇到困难了！！！在b站跟着视频开始接触maven来创建一个webapp项目，在jsp跳转的时候遇到一个bug，身边也没大佬带，只能自己慢慢摸索，在Maven项目中出现了报org.apache.jasper.JasperException: Unable to compile class for JSP:的问题，在网上查了很多方法来尝试解决，但天资愚钝无法理解大佬的跳转思维，后面某论坛看到解决放方案。

链接：https://blog.csdn.net/u011781521/article/details/53713162

一、问题描述

eclipse通过maven插件创建一个WEB项目通过内嵌Tomcat加载项目，启动没问题，一访问页面就报错提示无法将jsp编译为class文件:

org.apache.jasper.JasperException: Unable to compile class for JSP:

An error occurred at line: 1 in the generated java file  
The type java.io.ObjectInputStream cannot be resolved. It is indirectly referenced from required .class files

Stacktrace:  
org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:92)  
org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:330)  
org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:439)  
org.apache.jasper.compiler.Compiler.compile(Compiler.java:349)  
org.apache.jasper.compiler.Compiler.compile(Compiler.java:327)  
org.apache.jasper.compiler.Compiler.compile(Compiler.java:314)  
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:592)  
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:317)  
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)  
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)  
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

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*  **错误的原因为：tomcat6不支持jdk1.8版本**

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我pom.xml文件里明明配置的是Tomcat7啊!! 怎么是tomcat6运行去了。。。

<?xml version="1.0" encoding="UTF-8"?>
    
    <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.itheima</groupId>
      <artifactId>maven_java</artifactId>
      <version>1.0-SNAPSHOT</version>
      <packaging>war</packaging>
    
      <name>maven_java Maven Webapp</name>
      
      <url>http://www.example.com</url>
    
      <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.source>1.7</maven.compiler.source>
        <maven.compiler.target>1.7</maven.compiler.target>
      </properties>
    
      <dependencies>
        <dependency>
          <groupId>junit</groupId>
          <artifactId>junit</artifactId>
          <version>4.11</version>
          <scope>test</scope>
        </dependency>
    
        <dependency>
          <groupId>javax.servlet</groupId>
          <artifactId>servlet-api</artifactId>
          <version>2.5</version>
          <scope>provided</scope>
        </dependency>
    
        
        <dependency>
          <groupId>javax.servlet.jsp</groupId>
          <artifactId>jsp-api</artifactId>
          <version>2.1</version>
          <scope>provided</scope>
        </dependency>
    
      </dependencies>
    
      <build>
        <finalName>maven_java</finalName>
        <pluginManagement>
          <plugins>
            <plugin>
              <artifactId>maven-clean-plugin</artifactId>
              <version>3.1.0</version>
            </plugin>
            
            <plugin>
              <artifactId>maven-resources-plugin</artifactId>
              <version>3.0.2</version>
            </plugin>
            <plugin>
              <artifactId>maven-compiler-plugin</artifactId>
              <version>3.8.0</version>
            </plugin>
            <plugin>
              <artifactId>maven-surefire-plugin</artifactId>
              <version>2.22.1</version>
            </plugin>
            <plugin>
              <artifactId>maven-war-plugin</artifactId>
              <version>3.2.2</version>
            </plugin>
            <plugin>
              <artifactId>maven-install-plugin</artifactId>
              <version>2.5.2</version>
            </plugin>
            <plugin>
              <artifactId>maven-deploy-plugin</artifactId>
              <version>2.8.2</version>
            </plugin>
            <plugin>
              <groupId>org.apache.tomcat.maven</groupId>
              <artifactId>tomcat7-maven-plugin</artifactId>
              <version>2.2</version>
            </plugin>
          </plugins>
        </pluginManagement>
      </build>
    </project>

注意: 如果你的版本是tomcat7-maven-plugin 2.0 的话，由于它不支持 jdk 1.8，所以把它换成 tomcat7-maven-plugin 2.2就行了。

二、解决方法

找了下发现原来是这里出了问题!!!

把它改为: tomcat7:run 就行了，就不会报错了