我已经按照spring.io上的入门教程来构建REEST服务https://spring.io/guides/gs/rest-service/。问题是本教程仅解释了如何使用spring boot嵌入tomcat来生成独立运行的jar。
有没有办法从头开始创建一个项目,以便在已经存在的tomcat实例上进行部署?
PS:我在stackoverflow上找到了关于同一问题的前一个线程Spring RESTful Service as a WAR instead of JAR in Tomcat。问题是接受的答案和建议并没有完全解决我的问题,因为我没有找到修改独立应用程序弹簧启动项目的方法,以便它可以在外部tomcat容器上运行,但是喜欢找一个清洁工'解决方案根本不涉及弹簧靴。 (我不确定如何在这里表现,在stackoverflow上仍然很新。我希望打开一个新问题是正确的程序。)
答案 0 :(得分:50)
您不需要Spring Boot来创建休息控制器。
请遵循有关如何设置MVC的spring框架文档 https://docs.spring.io/spring/docs/current/spring-framework-reference/web.html#spring-web
MVC设置(DispatcherServlet
)取决于您的spring版本,您可以使用xml,也可以通过编程方式进行设置:
https://docs.spring.io/spring/docs/current/spring-framework-reference/web.html#mvc-servlet
设置完成后,您可以在应用程序中添加其他控制器。请注意,休息控制器(@RestController
注释)是一个构造型注释,它结合了@ResponseBody
和@Controller
,换句话说,Controller返回响应体中的对象而不是返回视图。
这是一个完美的例子,解释了我上面所说的: http://www.programming-free.com/2014/01/spring-mvc-40-restful-web-services.html
答案 1 :(得分:7)
这是另一个例子:
目录布局:
.
├── ./pom.xml
└── ./src
└── ./src/main
├── ./src/main/java
│ └── ./src/main/java/biz
│ └── ./src/main/java/biz/tugay
│ └── ./src/main/java/biz/tugay/restfulspring
│ └── ./src/main/java/biz/tugay/restfulspring/config
│ ├── ./src/main/java/biz/tugay/restfulspring/config/RestfulHello.java
│ └── ./src/main/java/biz/tugay/restfulspring/config/WebAppInitalizer.java
└── ./src/main/webapp
└── ./src/main/webapp/WEB-INF
└── ./src/main/webapp/WEB-INF/web.xml
<强>的pom.xml 强>
<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/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>biz.tugay</groupId>
<artifactId>restfulSpring</artifactId>
<packaging>war</packaging>
<version>1.0-SNAPSHOT</version>
<name>restfulSpring Maven Webapp</name>
<url>http://maven.apache.org</url>
<dependencies>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.0.1</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>4.3.16.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>4.3.16.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>4.3.16.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>4.3.16.RELEASE</version>
</dependency>
</dependencies>
<build>
<finalName>restfulSpring</finalName>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.1</version>
<configuration>
<source>1.7</source>
<target>1.7</target>
</configuration>
</plugin>
<plugin>
<groupId>org.eclipse.jetty</groupId>
<artifactId>jetty-maven-plugin</artifactId>
<version>9.2.1.v20140609</version>
</plugin>
</plugins>
</build>
</project>
<强>的web.xml 强>
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
version="3.0">
</web-app>
<强> WebAppInitalizer.java 强>
package biz.tugay.restfulspring.config;
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.support.AbstractAnnotationConfigDispatcherServletInitializer;
@Configuration
@EnableWebMvc
@ComponentScan("biz.tugay.restfulspring")
public class WebAppInitalizer extends AbstractAnnotationConfigDispatcherServletInitializer {
@Override
protected String[] getServletMappings() {
return new String[]{"/*"};
}
@Override
protected Class<?>[] getRootConfigClasses() {
return new Class<?>[]{WebAppInitalizer.class};
}
@Override
protected Class<?>[] getServletConfigClasses() {
return new Class[0];
}
}
<强> RestfulHello.java 强>
package biz.tugay.restfulspring.config;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
@RequestMapping(value = "/")
public class RestfulHello {
@RequestMapping(value = "hello")
public ResponseEntity<String> sayHello() {
final HttpHeaders httpHeaders= new HttpHeaders();
httpHeaders.setContentType(MediaType.APPLICATION_JSON);
return new ResponseEntity<String>("{\"msg\": \"Hello World\"}", httpHeaders, HttpStatus.OK);
}
}
构建并运行:
mvn clean install
mvn jetty:start
测试:
> GET /hello HTTP/1.1
> Host: localhost:8080
> User-Agent: insomnia/5.15.0
> Accept: */*
< HTTP/1.1 200 OK
< Date: Fri, 27 Apr 2018 00:06:07 GMT
< Content-Type: application/json
< Content-Length: 22
< Server: Jetty(9.2.1.v20140609)
收到的内容:
{
"msg": "Hello World"
}
可以从here下载。