[英]org.springframework.web.SpringServletContainerInitializer cannot be cast to javax.servlet.ServletContainerInitializer — Eclipse Spring Project
please let me begin by telling you what I intend to do. 请让我先告诉您我打算做什么。 I intend to follow through the tutorial on 'Building a RESTful Web Service' exactly as is mentioned in the Springframework's website http://spring.io/guides/gs/rest-service/
我打算完全按照Springframework网站http://spring.io/guides/gs/rest-service/中的介绍来学习有关“构建RESTful Web服务”的教程。
My problem is setting up the environment so I can launch a first prototype. 我的问题是设置环境,以便我可以启动第一个原型。 I am reliant on the Eclipse IDE on a Windows 7 64-bit machine.
我依赖于Windows 7 64位计算机上的Eclipse IDE。 The project is based on a 'gradle' build file.
该项目基于“ gradle”构建文件。 I get the error when I try to run the project using the build.gradle.
当我尝试使用build.gradle运行项目时出现错误。 Here is how I am trying to run the project.
这是我尝试运行项目的方式。
At the project explorer window, right-click on the project>Run As>Gradle build>tomcatrun 在项目资源管理器窗口中,右键单击项目>运行方式> Gradle build> tomcatrun
The build.gradle file is as follows: build.gradle文件如下:
apply plugin: 'war'
apply plugin: 'tomcat'
apply plugin: 'java'
apply plugin: 'propdeps'
apply plugin: 'propdeps-maven'
apply plugin: 'propdeps-idea'
apply plugin: 'propdeps-eclipse'
apply plugin: 'eclipse'
apply plugin: 'idea'
buildscript {
repositories {
mavenCentral()
maven {
url "http://download.java.net/maven/2"
}
maven { url 'http://repo.spring.io/plugins-release' }
}
dependencies {
classpath 'org.gradle.api.plugins:gradle-tomcat-plugin:0.9.8'
classpath 'org.springframework.build.gradle:propdeps-plugin:0.0.1'
}
}
repositories {
mavenCentral()
}
dependencies {
def tomcatVersion = '7.0.12'
tomcat "org.apache.tomcat.embed:tomcat-embed-core:${tomcatVersion}",
"org.apache.tomcat.embed:tomcat-embed-logging-juli:${tomcatVersion}"
tomcat("org.apache.tomcat.embed:tomcat-embed-jasper:${tomcatVersion}") {
exclude group: 'org.eclipse.jdt.core.compiler', module: 'ecj'
}
compile 'org.springframework:spring-core:3.2.3.RELEASE'
compile 'org.springframework:spring-webmvc:3.2.3.RELEASE'
compile 'com.jayway.jsonpath:json-path:0.8.1'
compile 'org.slf4j:slf4j-api:1.7.5'
runtime 'org.slf4j:slf4j-jdk14:1.7.5'
runtime 'com.fasterxml.jackson.core:jackson-core:2.2.2'
runtime 'com.fasterxml.jackson.core:jackson-databind:2.2.2'
runtime 'javax.xml.bind:jaxb-api:2.2.9'
provided 'javax.servlet:javax.servlet-api:3.0.1'
testCompile 'com.jayway.jsonpath:json-path-assert:0.8.1'
testCompile 'org.springframework:spring-test:3.2.3.RELEASE'
testCompile 'junit:junit:4.+'
testCompile "org.mockito:mockito-all:1.9.5"
}
task wrapper(type: Wrapper) {
gradleVersion = '1.6'
}
tomcatRunWar.contextPath = ''
I think the problem is in correctly defining dependency with the package. 我认为问题出在正确定义与包的依赖关系。 'javax.servlet:javax.servlet-api:3.0.1'
'javax.servlet:javax.servlet-api:3.0.1'
Some other references on the web mention supplying the 'provided' attribute in the build file. 网络上的其他一些参考文献提到在构建文件中提供了“已提供”属性。 That keyword is indeed present in the file.
该关键字确实存在于文件中。 I tried looking up how to do the same on some gradle documentation (in case something was missing) but I can't locate the problem.
我尝试在某些gradle文档中查找如何做同样的事情(以防万一某些东西丢失了),但是我找不到问题所在。 The tutorial assumes that you're running the build in a linux shell.
本教程假定您正在linux shell中运行构建。 I think there's some thing about using the eclipse IDE that triggers the error.
我认为使用eclipse IDE会触发错误。 Any help will be appreciated.
任何帮助将不胜感激。 Here is the WebApplicationInitializer file:
这是WebApplicationInitializer文件:
// {!begin top}
package com.yummynoodlebar.config;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.WebApplicationInitializer;
import org.springframework.web.context.ContextLoaderListener;
import org.springframework.web.context.WebApplicationContext;
import org.springframework.web.context.support.AnnotationConfigWebApplicationContext;
import org.springframework.web.filter.DelegatingFilterProxy;
import org.springframework.web.servlet.DispatcherServlet;
import javax.servlet.FilterRegistration;
import javax.servlet.ServletContext;
import javax.servlet.ServletRegistration;
import java.util.Set;
public class WebAppInitializer implements WebApplicationInitializer {
private static Logger LOG = LoggerFactory.getLogger(WebAppInitializer.class);
// {!end top}
// {!begin onStartup}
@Override
public void onStartup(ServletContext servletContext) {
WebApplicationContext rootContext = createRootContext(servletContext);
configureSpringMvc(servletContext, rootContext);
}
// {!end onStartup}
// {!begin createRootContext}
private WebApplicationContext createRootContext(ServletContext servletContext) {
AnnotationConfigWebApplicationContext rootContext = new AnnotationConfigWebApplicationContext();
rootContext.register(CoreConfig.class);
rootContext.refresh();
servletContext.addListener(new ContextLoaderListener(rootContext));
servletContext.setInitParameter("defaultHtmlEscape", "true");
return rootContext;
}
// {!end createRootContext}
// {!begin configureTop}
private void configureSpringMvc(ServletContext servletContext, WebApplicationContext rootContext) {
AnnotationConfigWebApplicationContext mvcContext = new AnnotationConfigWebApplicationContext();
mvcContext.register(MVCConfig.class);
mvcContext.setParent(rootContext);
// {!end configureTop}
// {!begin configureBottom}
ServletRegistration.Dynamic appServlet = servletContext.addServlet(
"webservice", new DispatcherServlet(mvcContext));
appServlet.setLoadOnStartup(1);
Set<String> mappingConflicts = appServlet.addMapping("/");
if (!mappingConflicts.isEmpty()) {
for (String s : mappingConflicts) {
LOG.error("Mapping conflict: " + s);
}
throw new IllegalStateException(
"'webservice' cannot be mapped to '/'");
}
// {!end configureBottom}
}
}
Thanks a lot! 非常感谢!
I got this error, while configuring my Spring Based Web Application in Tomcat 7(using Maven).In my pom.xml the following dependency was there: 在Tomcat 7中使用Maven配置基于Spring的Web应用程序时遇到此错误。在我的pom.xml中存在以下依赖项:
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
</dependency>
Due to which the javax.servlet jar is getting included in the deployment artifact. 由于这个原因,javax.servlet jar被包含在部署工件中。 Upon providing the scope "provided" to the above mentioned dependency I was able to fix the issue.
通过提供上述依赖项“提供”的范围,我可以解决此问题。 Hope this helps....
希望这可以帮助....
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
<scope>provided</scope>
</dependency>
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