package com.changhong.autoform.core.spring;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.Map;
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import org.springframework.beans.BeansException;
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import org.springframework.context.ApplicationContext;
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import org.springframework.context.ApplicationContextAware;
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import org.springframework.stereotype.Service;
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import com.changhong.autoform.core.exception.AutoFormException;
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/**
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* 获得spring管理的bean
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* @ClassName: SpringContext
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* @author [九鼎联合科技]
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* @date 2017年6月2日 上午10:42:38
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*/
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@Service
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public class SpringContext implements ApplicationContextAware{
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/*
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* spring上下文
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*/
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private static ApplicationContext applicationContext;
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/**
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* 获得spring容器上下文
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* @Title: getApplicationContext
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* @param @return 设定文件
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* @return WebApplicationContext 返回类型
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* @throws
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*/
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public static ApplicationContext getApplicationContext(){
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return applicationContext;
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}
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/**
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* 获得spring容器管理的bean
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* @Title: getBean
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* @param @param name
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* @param @return 设定文件
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* @return Object 返回类型
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* @throws
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*/
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public static Object getBean(String name){
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return getApplicationContext().getBean(name);
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}
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/**
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* 获得spring容器管理的bean
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* @Title: getBean
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* @param @param clazz
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* @param @return 设定文件
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* @return T 返回类型
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* @throws
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*/
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public static <T> T getBean(Class<T> clazz, BeanFilter bf){
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Map<String, T> beans = getApplicationContext().getBeansOfType(clazz);
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if(beans.size() == 1){
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return new ArrayList<>(beans.values()).get(0);
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}else if(beans.size() > 1){
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for(Map.Entry<String, T> entry : beans.entrySet()){
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if(bf != null){
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if(bf.filter(entry.getKey())){
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return entry.getValue();
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}
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}
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}
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throw new AutoFormException(String.format("没有'%s'类型的bean", clazz.getName()));
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}else{
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throw new AutoFormException(String.format("没有'%s'类型的bean", clazz.getName()));
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}
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}
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/**
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* 获得bean
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* @param clazz
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* @return
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*/
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public static <T> T getBean(Class<T> clazz){
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Map<String, T> beans = getApplicationContext().getBeansOfType(clazz);
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if(beans == null || beans.isEmpty()){
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return null;
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}
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return new ArrayList<>(beans.values()).get(0);
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}
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/**
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* 获得bean集合
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* @param clazz
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* @return
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*/
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public static <T> List<T> getBeans(Class<T> clazz){
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return new ArrayList<>(getApplicationContext().getBeansOfType(clazz).values());
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}
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/**
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* 获得spring容器管理的bean
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* @Title: getBean
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* @param @param name
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* @param @param clazz
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* @param @return 设定文件
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* @return T 返回类型
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* @throws
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*/
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@SuppressWarnings("unchecked")
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public static <T> T getBean(String name, Class<T> clazz){
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return (T) getApplicationContext().getBean(name);
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}
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@Override
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public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
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SpringContext.applicationContext = applicationContext;
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}
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}
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