[bs-92] Add simple main wrapper for SpringApplication
* Added Spring class * Used in demo project in README * Also fixed cycle in spring-bootstrap jar [Fixes #49121565]pull/1/merge
Dave Syer
12 years ago
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/*
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* Copyright 2012-2013 the original author or authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.springframework.bootstrap.main;
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import java.util.ArrayList;
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import java.util.List;
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import org.apache.commons.logging.LogFactory;
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import org.springframework.bootstrap.SpringApplication;
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import org.springframework.bootstrap.context.annotation.EnableAutoConfiguration;
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import org.springframework.context.ApplicationContext;
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import org.springframework.context.annotation.ClassPathScanningCandidateComponentProvider;
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import org.springframework.context.annotation.ComponentScan;
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import org.springframework.context.annotation.Configuration;
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import org.springframework.core.SpringVersion;
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import org.springframework.util.ClassUtils;
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/**
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* Very simple main class that can be used to launch an application from sources (class,
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* package or XML). Useful for demos and testing, perhaps less for production use (where
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* the {@link SpringApplication} run methods are often more convenient).
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*
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* @author Dave Syer
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*
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*/
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@Configuration
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@EnableAutoConfiguration
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@ComponentScan
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public class Spring {
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private static ClassPathScanningCandidateComponentProvider scanner = new ClassPathScanningCandidateComponentProvider(
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true);
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private static ApplicationContext context;
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/**
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* @return the context if there is one
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*/
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public static ApplicationContext getApplicationContext() {
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return context;
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}
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/**
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* A basic main that can be used to launch an application.
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*
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* @param args command line arguments
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* @see SpringApplication#run(Object[], String[])
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* @see SpringApplication#run(Object, String...)
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*/
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public static void main(String[] args) throws Exception {
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List<String> strings = new ArrayList<String>();
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List<Object> sources = new ArrayList<Object>();
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for (String arg : args) {
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if (ClassUtils.isPresent(arg, null)) {
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sources.add(ClassUtils.forName(arg, null));
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} else if (arg.endsWith(".xml")) {
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sources.add(arg);
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} else if (!scanner.findCandidateComponents(arg).isEmpty()) {
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sources.add(arg);
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} else {
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strings.add(arg);
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}
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}
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if (sources.isEmpty()) {
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sources.add(Spring.class);
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}
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context = SpringApplication.run(sources.toArray(new Object[sources.size()]),
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strings.toArray(new String[strings.size()]));
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LogFactory.getLog(Spring.class).info(
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"Running Spring " + SpringVersion.getVersion() + " with sources: "
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+ sources);
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}
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}
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@ -0,0 +1,61 @@
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/*
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* Copyright 2012-2013 the original author or authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.springframework.bootstrap.main;
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import org.junit.After;
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import org.junit.Test;
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import org.springframework.context.ApplicationContext;
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import org.springframework.context.ConfigurableApplicationContext;
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import org.springframework.util.ClassUtils;
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import static org.junit.Assert.assertNotNull;
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/**
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* @author Dave Syer
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*
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*/
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public class SimpleMainTests {
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private ApplicationContext context;
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@After
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public void close() {
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if (this.context instanceof ConfigurableApplicationContext) {
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((ConfigurableApplicationContext) this.context).close();
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}
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}
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@Test
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public void emptyApplicationContext() throws Exception {
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Spring.main(new String[0]);
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this.context = Spring.getApplicationContext();
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assertNotNull(this.context);
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}
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@Test
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public void basePackageScan() throws Exception {
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Spring.main(new String[] { ClassUtils.getPackageName(Spring.class) });
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this.context = Spring.getApplicationContext();
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assertNotNull(this.context);
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}
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@Test
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public void xmlContext() throws Exception {
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Spring.main(new String[] { Spring.class.getName(),
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"org/springframework/bootstrap/sample-beans.xml" });
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}
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}
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