vis*_*hal 12 java spring spring-boot spring-shell spring-web
我使用spring boot web starter创建了restfull web应用程序,效果很好.我可以通过网址访问它.
但是我需要创建可以在后端计算和存储一些值的控制台命令.我希望能够手动或通过bash脚本运行控制台命令.
我找不到任何关于如何在spring boot web应用程序中集成spring-shell项目的文档.
在spring boot starter https://start.spring.io/中也没有选择spring-shell依赖的选项
1)webapp和console需要是两个独立的应用程序吗？我需要单独部署它们吗？
2)是否可以在同一个应用程序中部署Web应用程序并运行控制台命令？
3)在shell和Web应用程序之间共享公共代码(模型,服务,实体,业务逻辑)的最佳方法是什么？
有人可以帮忙吗？
这里有两个选项:
(1)从命令行调用的Rest API
您可以创建一个Spring @RestController,然后从命令行调用它？
curl -X POST -i -H "Content-type: application/json" -c cookies.txt -X POST http://hostname:8080/service -d '
{
"field":"value",
"field2":"value2"
}
'
您可以轻松地将其嵌入到一个漂亮的shell脚本中.
(2)使用spring-boot-remote-shell(不建议使用)
虽然它主要用于监视/管理目的,但您可以使用spring-boot-remote-shell.
依赖
您需要以下依赖项来启用remote-shell:
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-remote-shell</artifactId>
</dependency>
<dependency>
<groupId>org.crsh</groupId>
<artifactId>crsh.shell.telnet</artifactId>
<version>1.3.0-beta2</version>
</dependency>
Groovy脚本:
在以下位置添加以下脚本src/main/resources/custom.groovy:
package commands
import org.crsh.cli.Command
import org.crsh.cli.Usage
import org.crsh.command.InvocationContext
class custom {
@Usage("Custom command")
@Command
def main(InvocationContext context) {
return "Hello"
}
}
要从这个groovy脚本中获取Spring bean(来源:https://stackoverflow.com/a/24300534/641627):
BeanFactory beanFactory = (BeanFactory) context.getAttributes().get("spring.beanfactory");
MyController myController = beanFactory.getBean(MyController.class);
启动SpringBootApp
使用类路径上的spring-boot-remote-shell,Spring Boot应用程序侦听端口5000(默认情况下).你现在可以这样做:
$ telnet localhost 5000
Trying ::1...
Connected to localhost.
Escape character is '^]'.
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v1.3.5.RELEASE)
救命
您可以键入help以查看可用命令列表:
NAME DESCRIPTION
autoconfig Display auto configuration report from ApplicationContext
beans Display beans in ApplicationContext
cron manages the cron plugin
custom Custom command
dashboard
egrep search file(s) for lines that match a pattern
endpoint Invoke actuator endpoints
env display the term env
filter A filter for a stream of map
help provides basic help
java various java language commands
jmx Java Management Extensions
jul java.util.logging commands
jvm JVM informations
less opposite of more
log logging commands
mail interact with emails
man format and display the on-line manual pages
metrics Display metrics provided by Spring Boot
shell shell related command
sleep sleep for some time
sort Sort a map
system vm system properties commands
thread JVM thread commands
调用我们的自定义命令
列出了我们的自定义命令(从顶部开始的第四个),您可以调用它:
> custom
Hello
所以,基本上,你的crontab会执行telnet 5000并执行custom
(3)如何使用参数和选项(回答评论中的问题)
要使用参数,您可以查看文档:
class date {
@Usage("show the current time")
@Command
Object main(
@Usage("the time format")
@Option(names=["f","format"])
String format) {
if (format == null)
format = "EEE MMM d HH:mm:ss z yyyy";
def date = new Date();
return date.format(format);
}
}
% date -h
% usage: date [-h | --help] [-f | --format]
% [-h | --help] command usage
% [-f | --format] the time format
% date -f yyyyMMdd
仍然来自他们的文件:
@Usage("JDBC connection")
class jdbc {
@Usage("connect to database with a JDBC connection string")
@Command
public String connect(
@Usage("The username")
@Option(names=["u","username"])
String user,
@Usage("The password")
@Option(names=["p","password"])
String password,
@Usage("The extra properties")
@Option(names=["properties"])
Properties properties,
@Usage("The connection string")
@Argument
String connectionString) {
...
}
@Usage("close the current connection")
@Command
public String close() {
...
}
}
% jdbc connect jdbc:derby:memory:EmbeddedDB;create=true
最后一个命令执行:
jdbcconnectjdbc:derby:memory:EmbeddedDB;create=true以下包含:
代码:
package commands
import org.crsh.cli.Command
import org.crsh.cli.Usage
import org.crsh.command.InvocationContext
import org.springframework.beans.factory.BeanFactory
import com.alexbt.goodies.MyBean
class SayMessage {
String message;
SayMessage(){
this.message = "Hello";
}
@Usage("Default command")
@Command
def main(InvocationContext context, @Usage("A Parameter") @Option(names=["p","param"]) String param) {
BeanFactory beanFactory = (BeanFactory) context.getAttributes().get("spring.beanfactory");
MyBean bean = beanFactory.getBean(MyBean.class);
return message + " " + bean.getValue() + " " + param;
}
@Usage("Hi subcommand")
@Command
def hi(InvocationContext context, @Usage("A Parameter") @Option(names=["p","param"]) String param) {
BeanFactory beanFactory = (BeanFactory) context.getAttributes().get("spring.beanfactory");
MyBean bean = beanFactory.getBean(MyBean.class);
return "Hi " + bean.getValue() + " " + param;
}
}
> saymsg -p Johnny
> Hello my friend Johnny
> saymsg hi -p Johnny
> Hi my friend Johnny
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