VNT*_*VNT 7 java maven spring-boot
当我启动springboot应用程序时,我的SpringBootLoginController类抛出此错误(无法启动嵌入式容器),如下所示.它是一个hello world类型的spring启动应用程序示例.
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:: Spring Boot :: (v1.5.2.RELEASE)
org.springframework.context.ApplicationContextException: Unable to start embedded container; nested exception is org.springframework.context.ApplicationContextException: Unable to start EmbeddedWebApplicationContext due to missing EmbeddedServletContainerFactory bean.
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.onRefresh(EmbeddedWebApplicationContext.java:137) ~[spring-boot-1.5.2.RELEASE.jar:1.5.2.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:536) ~[spring-context-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122) ~[spring-boot-1.5.2.RELEASE.jar:1.5.2.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:737) [spring-boot-1.5.2.RELEASE.jar:1.5.2.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:370) [spring-boot-1.5.2.RELEASE.jar:1.5.2.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:314) [spring-boot-1.5.2.RELEASE.jar:1.5.2.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1162) [spring-boot-1.5.2.RELEASE.jar:1.5.2.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1151) [spring-boot-1.5.2.RELEASE.jar:1.5.2.RELEASE]
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我的pom.xml
<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.test.springboot</groupId>
<artifactId>HelloSpringBoot</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<name>HelloSpringBoot</name>
<description>HelloSpringBoot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.2.RELEASE</version>
</parent>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
</dependencies>
</project>
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我的控制器:
import org.springframework.boot.*;
import org.springframework.web.bind.annotation.*;
@RestController
public class SpringBootLoginController {
@RequestMapping("/hello")
String hello() {
return "Hello World!!!";
}
public static void main(String[] args) throws Exception {
SpringApplication.run(SpringBootLoginController.class, args);
}
}
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通过使用@SpringBootApplication进行批注可以解决此问题.
@SpringBootApplication
@RestController
public class SpringBootLoginController {
@RequestMapping("/hello")
String hello() {
return "Hello World!!!";
}
public static void main(String[] args) throws Exception {
SpringApplication.run(SpringBootLoginController.class, args);
}
}
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或者,通过添加@EnableAutoConfiguration也可以解决此问题.
@EnableAutoConfiguration
@RestController
public class SpringBootLoginController {
@RequestMapping("/hello")
String hello() {
return "Hello World!!!";
}
public static void main(String[] args) throws Exception {
SpringApplication.run(SpringBootLoginController.class, args);
}
}
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尝试使用注释注释您的SpringBootLoginController类@SpringBootApplication.
@SpringBootApplication
@RestController
public class SpringBootLoginController {
@RequestMapping("/hello")
String hello() {
return "Hello World!!!";
}
public static void main(String[] args) throws Exception {
SpringApplication.run(SpringBootLoginController.class, args);
}
}
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就我而言,我正在使用springboot开发一个命令行项目。
@SpringBootApplication
public class Application implements CommandLineRunner {
//my code here
}
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所以我只是使用简单的启动器。
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
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但是我也遇到了这个错误,并且在pom中没有真正相关的与Web相关的依赖。
最后,我发现我的一个依赖项目是在自己的pom中使用“ javax.servlet.Servlet”。
如果您检查springboot的源代码,它将在启动应用程序时检查项目中是否有“ javax.servlet.Servlet”。并在存在任何“ javax.servlet.Servlet”时尝试启动Web“嵌入式容器”。
这就是为什么出现此错误的原因,因为我使用的是“ spring-boot-starter”,并且其中没有Web容器。
因此,解决方案非常简单,只需在“ application.properties”中告诉springboot这不是一个Web项目:
spring.main.web-environment=false
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