[英]Maven plugin to validate Spring configuration?
有誰知道可以用來驗證Spring配置文件的Maven插件? 通過驗證,我的意思是:
我四處搜索,沒有想出任何東西。
Maven插件非常適合我的目的,但是任何其他工具(Eclipse插件等)都會受到贊賞。
我們在項目中所做的只是編寫一個加載Spring配置的JUnit測試。 這會做一些你描述的事情:
它不會檢查是否沒有孤兒豆。 無論如何,考慮到代碼中的任何地方,都沒有可靠的方法來執行此操作,您可以直接根據ID查找bean。 僅僅因為bean沒有被任何其他bean引用並不意味着它沒有被使用。 事實上,所有Spring配置都至少有一個bean沒有被其他bean引用,因為總是必須有層次結構的根。
如果您的bean依賴於數據庫等實際服務,並且您不希望在JUnit測試中連接到這些服務,則只需抽象配置以允許測試值。 這可以通過PropertyPlaceholderConfigurer之類的東西輕松完成,它允許您為每個環境在單獨的配置文件中指定不同的屬性,然后由一個bean定義文件引用。
編輯(包括示例代碼):
我們這樣做的方式是至少有3個不同的彈簧文件......
applicationContext.xml中
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">
<import resource="classpath:beanDefinitions.xml"/>
<bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="location" value="file:path/environment.properties" />
</bean>
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="${driver}" />
...
</bean>
... <!-- more beans which shouldn't be loaded in a test go here -->
</beans>
beanDefinitions.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">
<bean id="myBean" class="com.example.MyClass">
...
</bean>
<bean id="myRepo" class="com.example.MyRepository">
<property name="dataSource" ref="dataSource"/>
...
</bean>
... <!-- more beans which should be loaded in a test -->
</beans>
testContext.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">
<import resource="classpath:beanDefinitions.xml"/>
<bean id="dataSource" class="org.mockito.Mockito" factory-method="mock">
<constructor-arg value="org.springframework.jdbc.datasource.DriverManagerDataSource"/>
</bean>
</beans>
這里有很多事情,讓我解釋一下......
既然我們有一個測試上下文,我們不怕從測試中加載,這里是代碼來做...
SpringContextTest.java包com.example;
import org.junit.Test;
import org.springframework.beans.factory.xml.XmlBeanFactory;
import org.springframework.core.io.ClassPathResource;
public class SpringContextTest {
@Test
public void springContextCanLoad() {
XmlBeanFactory factory = new XmlBeanFactory(new ClassPathResource("testContext.xml"));
for (String beanName : factory.getBeanDefinitionNames()) {
Object bean = factory.getBean(beanName);
// assert anything you want
}
}
}
這可能不是最佳方式; ApplicationContext類是加載spring上下文的推薦方法。 以上可能可以替換為:
@Test
public void springContextCanLoad() {
ApplicationContext context = new FileSystemXmlApplicationContext("classpath:testContext.xml");
}
我相信一行將完成驗證彈簧環境正確接線所需的一切。 從那里,您可以像以前一樣加載bean並斷言。
希望這可以幫助!
這是Spring IDE更新站點 (Eclipse插件)的URL。 它完成了你上面描述的。 他們的網站似乎無法使用。
我在谷歌搜索時遇到了這個問題 - 我有完全相同的問題。
我已經編寫了一個( 非常未經測試的 )Maven插件來執行此操作。 它目前僅支持WAR,但可以輕松擴展。 另外,我不打算實際加載bean,因為我不想為了滿足這個插件而必須維護大量屬性的麻煩。
在這里它是否有用:
package myplugins;
import org.apache.maven.plugin.AbstractMojo;
import org.apache.maven.plugin.MojoExecutionException;
import org.apache.maven.project.MavenProject;
import org.springframework.beans.MutablePropertyValues;
import org.springframework.beans.PropertyValue;
import org.springframework.beans.factory.config.BeanDefinition;
import org.springframework.beans.factory.config.ConstructorArgumentValues;
import org.springframework.beans.factory.support.DefaultListableBeanFactory;
import org.springframework.beans.factory.xml.XmlBeanDefinitionReader;
import org.springframework.core.io.FileSystemResource;
import org.springframework.util.ClassUtils;
import java.io.File;
import java.lang.reflect.Constructor;
import java.lang.reflect.Method;
import java.net.URL;
import java.net.URLClassLoader;
import java.util.Collection;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
/**
* Validates Spring configuration resource and class references
* using a classloader that looks at the specified WAR's lib and classes
* directory.
* <p/>
* It doesn't attempt to load the application context as to avoid the
* need to supply property files
* <br/>
* TODO: maybe one day supplying properties will become an optional part of the validation.
*
* @goal validate
* @aggregator
* @phase install
*/
public class WarSpringValidationMojo extends AbstractMojo
{
private final static String FILE_SEPARATOR = System.getProperty("file.separator");
/**
* Project.
* @parameter expression="${project}"
* @readonly
*/
private MavenProject project;
/**
* The WAR's root Spring configuration file name.
*
* @parameter expression="${applicationContext}" default-value="webAppConfig.xml"
*/
private String applicationContext;
/**
* The WAR's directory.
*
* @parameter expression="${warSourceDirectory}" default-value="${basedir}/target/${project.build.finalName}"
*/
private File warSourceDirectory;
@SuppressWarnings("unchecked")
public void execute() throws MojoExecutionException
{
try
{
if ("war".equals(project.getArtifact().getType()))
{
File applicationContextFile = new File(warSourceDirectory, "WEB-INF" + FILE_SEPARATOR + applicationContext);
File classesDir = new File(warSourceDirectory, "WEB-INF" + FILE_SEPARATOR + "classes");
File libDir = new File(warSourceDirectory, "WEB-INF" + FILE_SEPARATOR + "lib");
Set<URL> classUrls = new HashSet<URL>();
if (classesDir.exists())
{
classUrls.addAll(getUrlsForExtension(classesDir, "class", "properties"));
}
if (libDir.exists())
{
classUrls.addAll(getUrlsForExtension(libDir, "jar", "zip"));
}
ClassLoader parentClassLoader = Thread.currentThread().getContextClassLoader();
ClassLoader classLoader = new URLClassLoader(classUrls.toArray(new URL[classUrls.size()]), parentClassLoader);
ClassUtils.overrideThreadContextClassLoader(classLoader);
DefaultListableBeanFactory factory = new DefaultListableBeanFactory();
factory.setBeanClassLoader(classLoader);
XmlBeanDefinitionReader reader = new XmlBeanDefinitionReader(factory);
reader.setValidating(true);
reader.loadBeanDefinitions(new FileSystemResource(applicationContextFile));
for (String beanName : factory.getBeanDefinitionNames())
{
validateBeanDefinition(classLoader, factory.getBeanDefinition(beanName), beanName);
}
getLog().info("Successfully validated Spring configuration (NOTE: validation only checks classes, " +
"property setter methods and resource references)");
}
else
{
getLog().info("Skipping validation since project artifact is not a WAR");
}
}
catch (Exception e)
{
getLog().error("Loading Spring beans threw an exception", e);
throw new MojoExecutionException("Failed to validate Spring configuration");
}
}
private void validateBeanDefinition(ClassLoader beanClassloader, BeanDefinition beanDefinition, String beanName) throws Exception
{
Class<?> beanClass = validateBeanClass(beanClassloader, beanDefinition, beanName);
validateBeanConstructor(beanDefinition, beanName, beanClass);
validateBeanSetters(beanDefinition, beanName, beanClass);
}
private Class<?> validateBeanClass(ClassLoader beanClassloader, BeanDefinition beanDefinition, String beanName) throws Exception
{
Class<?> beanClass;
try
{
beanClass = beanClassloader.loadClass(beanDefinition.getBeanClassName());
}
catch (ClassNotFoundException e)
{
throw new ClassNotFoundException("Cannot find " + beanDefinition.getBeanClassName() +
" for bean '" + beanName + "' in " + beanDefinition.getResourceDescription(), e);
}
return beanClass;
}
private void validateBeanConstructor(BeanDefinition beanDefinition, String beanName,
Class<?> beanClass) throws Exception
{
boolean foundConstructor = false;
ConstructorArgumentValues constructorArgs = beanDefinition.getConstructorArgumentValues();
Class<?>[] argTypes = null;
if (constructorArgs != null)
{
Constructor<?>[] constructors = beanClass.getDeclaredConstructors();
int suppliedArgCount = constructorArgs.getArgumentCount();
boolean isGenericArgs = !constructorArgs.getGenericArgumentValues().isEmpty();
for (int k = 0; k < constructors.length && !foundConstructor; k++)
{
Constructor<?> c = constructors[k];
knownConstructorLoop:
{
Class<?>[] knownConstructorsArgTypes = c.getParameterTypes();
if (knownConstructorsArgTypes.length == suppliedArgCount)
{
if (isGenericArgs)
{
foundConstructor = true; // TODO - support generic arg checking
}
else
{
for (int i = 0; i < knownConstructorsArgTypes.length; i++)
{
Class<?> argType = knownConstructorsArgTypes[i];
ConstructorArgumentValues.ValueHolder valHolder = constructorArgs.getArgumentValue(i,
argType);
if (valHolder == null)
{
break knownConstructorLoop;
}
}
foundConstructor = true;
}
}
}
}
}
else
{
try
{
Constructor c = beanClass.getConstructor(argTypes);
foundConstructor = true;
}
catch (Exception ignored) { }
}
if (!foundConstructor)
{
throw new NoSuchMethodException("No matching constructor could be found for bean '" +
beanName + "' for " + beanClass.toString() + " in " + beanDefinition.getResourceDescription());
}
}
private void validateBeanSetters(BeanDefinition beanDefinition, String beanName, Class<?> beanClass) throws Exception
{
MutablePropertyValues properties = beanDefinition.getPropertyValues();
List<PropertyValue> propList = properties.getPropertyValueList();
try
{
Method[] methods = beanClass.getMethods();
for (PropertyValue p : propList)
{
boolean foundMethod = false;
String propName = p.getName();
String setterMethodName = "set" + propName.substring(0, 1).toUpperCase();
if (propName.length() > 1)
{
setterMethodName += propName.substring(1);
}
for (int i = 0; i < methods.length && !foundMethod; i++)
{
Method m = methods[i];
foundMethod = m.getName().equals(setterMethodName);
}
if (!foundMethod)
{
throw new NoSuchMethodException("No matching setter method " + setterMethodName
+ " could be found for bean '" + beanName + "' for " + beanClass.toString() +
" in " + beanDefinition.getResourceDescription());
}
}
}
catch (NoClassDefFoundError e)
{
getLog().warn("Could not validate setter methods for bean " + beanName +
" since getting the methods of " + beanClass + " threw a NoClassDefFoundError: "
+ e.getLocalizedMessage());
}
}
private Collection<? extends URL> getUrlsForExtension(File file, String... extensions) throws Exception
{
Set<URL> ret = new HashSet<URL>();
if (file.isDirectory())
{
for (File childFile : file.listFiles())
{
ret.addAll(getUrlsForExtension(childFile, extensions));
}
}
else
{
for (String ex : extensions)
{
if (file.getName().endsWith("." + ex))
{
ret.add(file.toURI().toURL());
break;
}
}
}
return ret;
}
}
而插件的pom.xml:
<?xml version="1.0"?>
<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<modelVersion>4.0.0</modelVersion>
<parent>
... <my project's parent> ...
</parent>
<groupId>myplugins</groupId>
<artifactId>maven-spring-validation-plugin</artifactId>
<version>1.0</version>
<packaging>maven-plugin</packaging>
<name>Maven Spring Validation Plugin</name>
<url>http://maven.apache.org</url>
<dependencies>
<dependency>
<groupId>org.apache.maven</groupId>
<artifactId>maven-plugin-api</artifactId>
<version>2.0</version>
</dependency>
<dependency>
<groupId>org.apache.maven</groupId>
<artifactId>maven-project</artifactId>
<version>2.0.8</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>3.0.7.RELEASE</version>
</dependency>
</dependencies>
</project>
安裝后,在WAR模塊的根級別運行:
mvn myplugins:maven-spring-validation-plugin:validate
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