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eclipse创建maven的j2ee项目

时间：2018-08-17 00:37:30      阅读：209      评论：0      收藏：0      [点我收藏+]

标签：nat   jmx   upd   pac   list   错误   xml文件   dac   spl   

JDK版本：1.8  x64

eclipse：Version: Photon Release (4.8.0) x64

tomcat: 9.0 x64

目录结构：

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操作步骤

菜单依次点击"File" --> "New" --> "Other"，弹出对话框：

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展开"Maven"，选择"Maven Project"，点击"Next"

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勾选"Create a simple project(...)"，点击"Next"

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输入"Group Id"和"Artifact Id"，“Packing"选择"war"，点击”Finish"。

 

此时项目中的pom.xml显示错误，错误信息显示“web.xml is missing and <failOnMissingWebXml> is set to true”，却是web.xml配置文件。

解决办法：

1.右键单击项目，选择"Java EE tools" --> "Generate deployment descriptor stub"

2.servlet 3.0开始可以不使用web.xml文件，可以在pom.xml文件中增加一下内容，让maven不产生错误提示：

  <properties>
      <failOnMissingWebXml>false</failOnMissingWebXml>
  </properties>

查看部署目录配置：

 技术分享图片

 

修改java版本和servlet版本

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修改pom.xml，添加依赖相关依赖包(本例子是springmvc实例，主要添加spring依赖包)保存pom.xml文件后，右键单击项目，“Maven" --> "Update Project..."，此时会自动下载依赖包到本地磁盘(默认目录C:\Users\计算机当前用户名\.m2)

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<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.pcant.studio</groupId>
  <artifactId>springmvc</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>war</packaging>
  <properties>
      <java.version>1.8</java.version>
      <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
      <jsp.version>2.2</jsp.version>
      <jstl.version>1.2</jstl.version>
      <servlet.version>4.0.0</servlet.version>
      <springframework.version>5.0.7.RELEASE</springframework.version>
      <logback.version>1.0.13</logback.version>
      <slf4j.version>1.7.25</slf4j.version>
      
  </properties>
  
 <dependencies>

    <dependency>
          <groupId>javax</groupId>
          <artifactId>javaee-web-api</artifactId>
          <version>8.0</version>
          <scope>provided</scope>
      </dependency>
      
      <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-webmvc</artifactId>
          <version>${springframework.version}</version>
      </dependency>
      
      <!-- 
      <dependency>
          <groupId>javax.servlet</groupId>
          <artifactId>jstl</artifactId>
          <version>${jstl.version}</version>
      </dependency>
      -->
      
      <dependency>
        <groupId>javax.servlet.jsp.jstl</groupId>
        <artifactId>jstl-api</artifactId>
        <version>1.2</version>
        <exclusions>
            <exclusion>
                <groupId>javax.servlet</groupId>
                <artifactId>servlet-api</artifactId>
            </exclusion>
            <exclusion>
                 <groupId>javax.servlet.jsp</groupId>
                 <artifactId>jsp-api</artifactId>
            </exclusion>
        </exclusions>
    </dependency>
    
    <dependency>
        <groupId>org.glassfish.web</groupId>
        <artifactId>jstl-impl</artifactId>
        <version>1.2</version>
        <exclusions>
            <exclusion>
                <groupId>javax.servlet</groupId>
                <artifactId>servlet-api</artifactId>
            </exclusion>
            <exclusion>
                <groupId>javax.servlet.jsp</groupId>
                <artifactId>jsp-api</artifactId>
            </exclusion>
            <exclusion>
                <groupId>javax.servlet.jsp.jstl</groupId>
                <artifactId>jstl-api</artifactId>
            </exclusion>
        </exclusions>
    </dependency> 

      <dependency>
          <groupId>javax.servlet</groupId>
          <artifactId>javax.servlet-api</artifactId>
          <version>${servlet.version}</version>
          <scope>provided</scope>
      </dependency>
      
      <dependency>
          <groupId>javax.servlet.jsp</groupId>
          <artifactId>jsp-api</artifactId>
          <version>${jsp.version}</version>
          <scope>provided</scope>
      </dependency>
      
      <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-tx</artifactId>
          <version>${springframework.version}</version>
      </dependency>
      
      <dependency>
          <groupId>org.slf4j</groupId>
          <artifactId>slf4j-api</artifactId>
          <version>${slf4j.version}</version>
      </dependency>
      
      <dependency>
          <groupId>log4j</groupId>
          <artifactId>log4j</artifactId>
          <version>1.2.16</version>
      </dependency>
      
      <dependency>
          <groupId>org.slf4j</groupId>
          <artifactId>jcl-over-slf4j</artifactId>
          <version>${slf4j.version}</version>
      </dependency>
      
      <dependency>
          <groupId>ch.qos.logback</groupId>
          <artifactId>logback-classic</artifactId>
          <version>${logback.version}</version>
      </dependency>
      
      <dependency>
          <groupId>ch.qos.logback</groupId>
          <artifactId>logback-core</artifactId>
          <version>${logback.version}</version>
      </dependency>
      
      <dependency>
          <groupId>ch.qos.logback</groupId>
          <artifactId>logback-access</artifactId>
          <version>${logback.version}</version>
      </dependency>
      
      
      
  </dependencies>
  
  <build>
      <plugins>
          <plugin>
              <groupId>org.apache.maven.plugins</groupId>
              <artifactId>maven-compiler-plugin</artifactId>
              <version>3.8.0</version>
              
              <configuration>
                  <source>${java.version}</source>
                  <target>${java.version}</target>
              </configuration>
          </plugin>
          
          <plugin>
              <groupId>org.apache.maven.plugins</groupId>
              <artifactId>maven-war-plugin</artifactId>
              <version>3.2.2</version>
              <configuration>
                  <failOnMissingWebXml>false</failOnMissingWebXml>
              </configuration>
          </plugin>
      </plugins>
  </build>
</project>
pom.xml

若下载依赖包太慢(默认从国外库源下载)，可以设置从阿里的库源，在.m2目录下增加settings.xml文件，内容如下:

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<settings xmlns="http://maven.apache.org/SETTINGS/1.0.0"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0
                    https://maven.apache.org/xsd/settings-1.0.0.xsd">

    <mirrors>
        <mirror>
            <id>nexus-aliyun</id>
            <mirrorOf>*</mirrorOf>
            <name>Nexus aliyun</name>
            <url>http://maven.aliyun.com/nexus/content/groups/public</url>
        </mirror> 
    </mirrors>
</settings>
settings.xml

 

src/main/java目录中创建com.pcantstudio包，增加Controller类，配置类，初始化类。

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package com.pcantstudio;

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

@Controller
public class HelloController {
    
    @RequestMapping("/index")
    public String Hello() {
        return "index";
    }
}
HelloController.java
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package com.pcantstudio;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.view.InternalResourceViewResolver;
import org.springframework.web.servlet.view.JstlView;

@Configuration
@EnableWebMvc
@ComponentScan("com.pcantstudio")
public class MyMvcConfig {

    @Bean
    public InternalResourceViewResolver viewResolver() {
        InternalResourceViewResolver viewResolver = new 
                InternalResourceViewResolver();
        
        viewResolver.setPrefix("/WEB-INF/classes/views/");
        viewResolver.setSuffix(".jsp");
        viewResolver.setViewClass(JstlView.class);
        return viewResolver;
    }
}
MyMvcConfig.java
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package com.pcantstudio;

import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.ServletRegistration.Dynamic;

import org.springframework.web.WebApplicationInitializer;
import org.springframework.web.context.support.AnnotationConfigWebApplicationContext;
import org.springframework.web.servlet.DispatcherServlet;

public class WebInitializer implements WebApplicationInitializer {

    @Override
    public void onStartup(ServletContext servletContext) throws ServletException {
        
        // TODO Auto-generated method stub
        AnnotationConfigWebApplicationContext ctx=new AnnotationConfigWebApplicationContext();
        ctx.register(MyMvcConfig.class);
        ctx.setServletContext(servletContext);
        Dynamic servlet = servletContext.addServlet("dispatcher", new DispatcherServlet(ctx));
        
        
        servlet.addMapping("/");
        servlet.setLoadOnStartup(1);
    }

}
WebInitializer.java

 

src/main/resources目录增加views目录和logback.xml文件，views目录增加index.jsp文件。

 

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<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="ISO-8859-1">
<title>Insert title here</title>
</head>
<body>

    <pre>
        welcome to Spring MVC world
    </pre>

</body>
</html>
index.jsp
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<?xml version="1.0" encoding="UTF-8"?>
<configuration scan="true" scanPeriod="1 seconds">
    <contextListener class="ch.qos.logback.classic.jul.LevelChangePropagator">
        <resetJUL>true</resetJUL>
    </contextListener>
    
    <jmxConfigurator/>
    
    <appender name="console" class="ch.qos.logback.core.ConsoleAppender">
        <encoder>
            <pattern>logback:%d{HH:mm:ss.SSS} %logger{36} - %msg%n</pattern>
        </encoder>
    </appender>
    
    <logger name="org.springframework.web" level="DEBUG">
    </logger>
    
    <root level="info">
        <appender-ref ref="console"/>
    </root>
    
</configuration>
logback.xml

 

配置tomcat，“Windows" --> "Preferences" --> Server --> "Runtime Envirenments"，点击”Add"，选择相应目录添加tomcat.

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点击“Apply and Close"，选择”Servers"选择卡

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点击“No servers are available....."，添加刚才增加的tomcat服务器。

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双击“Tomcat v9.0 Server at localhost"，修改部署路径。

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右键单击”Tomcat v9.0 Server at localhost"，选择" Add and Remove" 

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 将springmvc项目增加到tomcat中，点击”Finish",右键单击”Tomcat v9.0 Server at localhost"，选择" Start" ,启动tomcat server，如果没有报错，在浏览器中输入http://http://localhost:8080/springmvc/index

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注：

在修改pom.xml依赖包时，由于jstl配置错误，启动tomcat失败，网上查询了众多帖子都没能解决，最后从最简单的jsp页面开始，逐渐增加相关依赖包，才排查出依赖包版本错误。

提示信息：java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to initialize component [org.apache.catalina.webresources.JarResourceSet@631330c]

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严重: A child container failed during start
java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to initialize component [org.apache.catalina.webresources.JarResourceSet@631330c]
    at java.util.concurrent.FutureTask.report(Unknown Source)
    at java.util.concurrent.FutureTask.get(Unknown Source)
    at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:949)
    at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:839)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1427)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1417)
    at java.util.concurrent.FutureTask.run(Unknown Source)
    at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
    at java.util.concurrent.AbstractExecutorService.submit(Unknown Source)
    at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:943)
    at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:258)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
    at org.apache.catalina.core.StandardService.startInternal(StandardService.java:422)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
    at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:770)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
    at org.apache.catalina.startup.Catalina.start(Catalina.java:682)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:350)
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:492)
Caused by: org.apache.catalina.LifecycleException: Failed to initialize component [org.apache.catalina.webresources.JarResourceSet@631330c]
    at org.apache.catalina.util.LifecycleBase.handleSubClassException(LifecycleBase.java:441)
    at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:139)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:173)
    at org.apache.catalina.webresources.StandardRoot.startInternal(StandardRoot.java:724)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
    at org.apache.catalina.core.StandardContext.resourcesStart(StandardContext.java:4758)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:4893)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1427)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1417)
    at java.util.concurrent.FutureTask.run(Unknown Source)
    at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
    at java.util.concurrent.AbstractExecutorService.submit(Unknown Source)
    at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:943)
    ... 21 more
Caused by: java.lang.IllegalArgumentException: java.util.zip.ZipException: invalid LOC header (bad signature)
    at org.apache.catalina.webresources.AbstractSingleArchiveResourceSet.initInternal(AbstractSingleArchiveResourceSet.java:143)
    at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:136)
    ... 33 more
Caused by: java.util.zip.ZipException: invalid LOC header (bad signature)
    at java.util.zip.ZipFile.read(Native Method)
    at java.util.zip.ZipFile.access$1400(Unknown Source)
    at java.util.zip.ZipFile$ZipFileInputStream.read(Unknown Source)
    at java.util.zip.ZipFile$ZipFileInflaterInputStream.fill(Unknown Source)
    at java.util.zip.InflaterInputStream.read(Unknown Source)
    at sun.misc.IOUtils.readFully(Unknown Source)
    at java.util.jar.JarFile.getBytes(Unknown Source)
    at java.util.jar.JarFile.getManifestFromReference(Unknown Source)
    at java.util.jar.JarFile.getManifest(Unknown Source)
    at org.apache.catalina.webresources.AbstractSingleArchiveResourceSet.initInternal(AbstractSingleArchiveResourceSet.java:141)
    ... 34 more

八月 16, 2018 11:55:13 下午 org.apache.catalina.core.ContainerBase startInternal
严重: A child container failed during start
java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: A child container failed during start
    at java.util.concurrent.FutureTask.report(Unknown Source)
    at java.util.concurrent.FutureTask.get(Unknown Source)
    at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:949)
    at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:258)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
    at org.apache.catalina.core.StandardService.startInternal(StandardService.java:422)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
    at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:770)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
    at org.apache.catalina.startup.Catalina.start(Catalina.java:682)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:350)
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:492)
Caused by: org.apache.catalina.LifecycleException: A child container failed during start
    at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:958)
    at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:839)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1427)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1417)
    at java.util.concurrent.FutureTask.run(Unknown Source)
    at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75)
    at java.util.concurrent.AbstractExecutorService.submit(Unknown Source)
    at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:943)
    ... 13 more

八月 16, 2018 11:55:13 下午 org.apache.catalina.startup.Catalina start
严重: The required Server component failed to start so Tomcat is unable to start.
org.apache.catalina.LifecycleException: A child container failed during start
    at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:958)
    at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:258)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
    at org.apache.catalina.core.StandardService.startInternal(StandardService.java:422)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
    at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:770)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
    at org.apache.catalina.startup.Catalina.start(Catalina.java:682)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:350)
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:492)
详细错误提示

原因：

pom.xml配置实用jstl 1.2版本，jstl1.2版本与1.1.x、1.0.x配置不同，1.2版本配置两个包。

错误配置:

       <dependency>
          <groupId>javax.servlet</groupId>
          <artifactId>jstl</artifactId>
          <version>1.2</version>
      </dependency>

正确配置:

<dependency>
        <groupId>javax.servlet.jsp.jstl</groupId>
        <artifactId>jstl-api</artifactId>
        <version>1.2</version>
        <exclusions>
            <exclusion>
                <groupId>javax.servlet</groupId>
                <artifactId>servlet-api</artifactId>
            </exclusion>
            <exclusion>
                 <groupId>javax.servlet.jsp</groupId>
                 <artifactId>jsp-api</artifactId>
            </exclusion>
        </exclusions>
    </dependency>
    
    <dependency>
        <groupId>org.glassfish.web</groupId>
        <artifactId>jstl-impl</artifactId>
        <version>1.2</version>
        <exclusions>
            <exclusion>
                <groupId>javax.servlet</groupId>
                <artifactId>servlet-api</artifactId>
            </exclusion>
            <exclusion>
                <groupId>javax.servlet.jsp</groupId>
                <artifactId>jsp-api</artifactId>
            </exclusion>
            <exclusion>
                <groupId>javax.servlet.jsp.jstl</groupId>
                <artifactId>jstl-api</artifactId>
            </exclusion>
        </exclusions>
    </dependency>

 

依赖包的groupId和ArtifactId可在http://mvnrepository.com中查询。

注：该实例为《JavaEE开发的颠覆者 Spring Boot实战》一书实例。

源码下载：链接：https://pan.baidu.com/s/1fxWh5yLPmBgskphDXugEaQ 密码：f2kq

eclipse创建maven的j2ee项目

标签：nat   jmx   upd   pac   list   错误   xml文件   dac   spl   

原文地址：https://www.cnblogs.com/labing/p/9490678.html
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