首页 > 解决方案 > 更正应用程序的类路径,使其包含一个兼容的 org.apache.tomcat.util.compat.JreCompat 版本。使用jsp文件

问题描述

在将项目作为 Spring Boot 应用程序运行时出现此错误,我的猜测是解决方案可能不会太复杂:

错误日志:

2021-03-05 12:53:10.041 INFO 4704 --- [main] .s.M13SimpleSpringHttpServiceApplication:没有活动配置文件集,回退到默认配置文件:默认 2021-03-05 12:53:10.936 INFO 4704 --- [ main] .sdrcRepositoryConfigurationDelegate :在默认模式下引导 Spring Data JPA 存储库。2021-03-05 12:53:10.954 INFO 4704 --- [main] .sdrcRepositoryConfigurationDelegate:在 7 毫秒内完成 Spring 数据存储库扫描。找到 0 个 JPA 存储库接口。2021-03-05 12:53:11.520 WARN 4704 --- [main] ConfigServletWebServerApplicationContext:上下文初始化期间遇到异常 - 取消刷新尝试:org.springframework.context.ApplicationContextException:无法启动 Web 服务器;嵌套异常是 java.lang.NoSuchMethodError: 'boolean org.apache.tomcat.

启动 ApplicationContext 时出错。要显示条件报告,请在启用“调试”的情况下重新运行您的应用程序。2021-03-05 12:53:11.552 错误 4704 --- [主要] osbdLoggingFailureAnalysisReporter:


应用程序无法启动


描述:

试图调用不存在的方法。尝试是从以下位置进行的:

org.apache.catalina.startup.Tomcat.<clinit>(Tomcat.java:1303)

以下方法不存在:

'boolean org.apache.tomcat.util.compat.JreCompat.isGraalAvailable()'

该方法的类 org.apache.tomcat.util.compat.JreCompat 可从以下位置获得:

jar:file:/C:/Users/xxxx/.m2/repository/org/apache/tomcat/tomcat-util/8.5.30/tomcat-util-8.5.30.jar!/org/apache/tomcat/util/compat/JreCompat.class
jar:file:/C:/Users/xxxx/.m2/repository/org/apache/tomcat/embed/tomcat-embed-core/9.0.43/tomcat-embed-core-9.0.43.jar!/org/apache/tomcat/util/compat/JreCompat.class

类层次结构是从以下位置加载的:

org.apache.tomcat.util.compat.JreCompat: file:/C:/Users/xxxx/.m2/repository/org/apache/tomcat/tomcat-util/8.5.30/tomcat-util-8.5.30.jar

行动:

更正应用程序的类路径,使其包含一个兼容的 org.apache.tomcat.util.compat.JreCompat 版本

POM 文件

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.4.3</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    
    <groupId>com.simpleSpringHTTPService</groupId>
    <artifactId>M13SimpleSpringHTTPService</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>M13SimpleSpringHTTPService</name>
    <description>Demo project for Spring Boot</description>
    <properties>
        <java.version>1.8</java.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>       
        <dependency>
            <groupId>org.apache.tomcat</groupId>
            <artifactId>tomcat-jasper</artifactId>
            <version>8.5.30</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>com.h2database</groupId>
            <artifactId>h2</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

里面的jsp文件:src/main/webApp文件夹

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>

    <form action="addEmployee">
        <input type="text" name="id"><br>
        <input type="text" name="first_name"><br>
        <input type="text" name="last_name"><br>
        <input type="text" name="job_role"><br>
        <input type="submit"><br>
        
    </form>
</body>
</html>

员工类

package com.simpleSpringHTTPService.model;

public class Employee {

    private String first_name;
    private String last_name;
    private String job_role;
    private int id;
    
    public String getFirst_name() {
        return first_name;
    }
    public void setFirst_name(String first_name) {
        this.first_name = first_name;
    }
    public String getLast_name() {
        return last_name;
    }
    public void setLast_name(String last_name) {
        this.last_name = last_name;
    }
    public String getJob_role() {
        return job_role;
    }
    public void setJob_role(String job_role) {
        this.job_role = job_role;
    }
    public int getId() {
        return id;
    }
    public void setId(int id) {
        this.id = id;
    }
    
    @Override
    public String toString() {
        return "Employee [first_name=" + first_name + ", last_name=" + last_name + ", job_role=" + 
        job_role + ", id="+ id + "]";
    }   
    
}

EmployeeController 类

package com.simpleSpringHTTPService.controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

@Controller
public class EmployeeController {

    @RequestMapping("/")
    public String home() {
        
        return "home.jsp";
    }
}

我知道这还没有做太多,但我想运行它并打开 http://localhost:8080 并查看结果。

我试图查看其他线程中描述的构建路径库,例如:disableRegistry() doesn't exist (org.apache.tomcat.util.modeler.Registry),但我不想把它弄得太乱我是新手,任何帮助将不胜感激,谢谢!

标签: springjsptomcatclasspath

解决方案


tomcat-util您在依赖项中放置了两个不兼容的版本:

您应该改用embed-tomcat-jasper9.0.43 版。Maven 试图尽其所能消除版本冲突,但它不知道这一点tomcat-jasper并且embed-tomcat-jasper是同一件事。


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