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LiveBeansView produces a well-defined (and valid) JSON document now 

Issue: SPR-9662
This commit is contained in:
Juergen Hoeller 2012-09-26 10:30:15 +02:00 committed by unknown
parent 7b30ffd522
commit 3c557bfbc3
1 changed files with 32 additions and 13 deletions
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45
spring-context/src/main/java/org/springframework/context/support/LiveBeansView.java
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@ -18,6 +18,7 @@ package org.springframework.context.support;
import java.lang.management.ManagementFactory;
import java.util.Collections;
import java.util.Iterator;
import java.util.LinkedHashSet;
import java.util.Set;
import javax.management.MBeanServer;
@ -116,40 +117,50 @@ public class LiveBeansView implements LiveBeansViewMBean, ApplicationContextAwar
}
/**
* Actually generate a JSON snapshot of the beans in the given ApplicationContexts
* Actually generate a JSON snapshot of the beans in the given ApplicationContexts.
* <p>This implementation doesn't use any JSON parsing libraries in order to avoid
* third-party library dependencies. It produces an array of context description
* objects, each containing a context and parent attribute as well as a beans
* attribute with nested bean description objects. Each bean object contains a
* bean, scope, type and resource attribute, as well as a dependencies attribute
* with a nested array of bean names that the present bean depends on.
* @param contexts the set of ApplicationContexts
* @return the JSON document
*/
protected String generateJson(Set<ConfigurableApplicationContext> contexts) {
StringBuilder result = new StringBuilder();
for (ConfigurableApplicationContext context : contexts) {
result.append("{\n\"context\": \"").append(context.getId()).append("\"\n");
StringBuilder result = new StringBuilder("[\n");
for (Iterator<ConfigurableApplicationContext> it = contexts.iterator(); it.hasNext();) {
ConfigurableApplicationContext context = it.next();
result.append("{\n\"context\": \"").append(context.getId()).append("\",\n");
if (context.getParent() != null) {
result.append("\"parent\": \"").append(context.getParent().getId()).append("\"\n");
result.append("\"parent\": \"").append(context.getParent().getId()).append("\",\n");
}
else {
result.append("\"parent\": null\n");
result.append("\"parent\": null,\n");
}
result.append("\"beans\": [\n");
ConfigurableListableBeanFactory bf = context.getBeanFactory();
String[] beanNames = bf.getBeanDefinitionNames();
for (String beanName : beanNames) {
for (int i = 0; i < beanNames.length; i++) {
String beanName = beanNames[i];
BeanDefinition bd = bf.getBeanDefinition(beanName);
if (bd.getRole() != BeanDefinition.ROLE_INFRASTRUCTURE &&
(!bd.isLazyInit() || bf.containsSingleton(beanName))) {
result.append("{\n\"bean\": \"").append(beanName).append("\"\n");
result.append("{\n\"bean\": \"").append(beanName).append("\",\n");
String scope = bd.getScope();
if (!StringUtils.hasText(scope)) {
scope = BeanDefinition.SCOPE_SINGLETON;
}
result.append("\"scope\": \"").append(scope).append("\"\n");
result.append("\"scope\": \"").append(scope).append("\",\n");
Class beanType = bf.getType(beanName);
if (beanType != null) {
result.append("\"type\": \"").append(beanType.getName()).append("\"\n");
result.append("\"type\": \"").append(beanType.getName()).append("\",\n");
}
else {
result.append("\"type\": null\n");
result.append("\"type\": null,\n");
}
result.append("\"resource\": \"").append(bd.getResourceDescription()).append("\"\n");
String resource = StringUtils.replace(bd.getResourceDescription(), "\\", "/");
result.append("\"resource\": \"").append(resource).append("\",\n");
result.append("\"dependencies\": [");
String[] dependencies = bf.getDependenciesForBean(beanName);
if (dependencies.length > 0) {
@ -159,11 +170,19 @@ public class LiveBeansView implements LiveBeansViewMBean, ApplicationContextAwar
if (dependencies.length > 0) {
result.append("\"");
}
result.append("]\n}\n");
result.append("]\n}");
if (i < beanNames.length - 1) {
result.append(",\n");
}
}
}
result.append("]\n");
result.append("}");
if (it.hasNext()) {
result.append(",\n");
}
}
result.append("]");
return result.toString();
}