700字范文,内容丰富有趣,生活中的好帮手!
700字范文 > spring 自定义标签 学习二

spring 自定义标签 学习二

时间:2022-09-07 03:30:27

相关推荐

spring 自定义标签 学习二

在上篇中写的只支持写属性,不支持标签property的写法,但是如果有时候我们还想做成支持 property的用法,则可以在xsd中增加spring 自带的xsd引用

修改xsd文件如下:

<?xml version="1.0"encoding="UTF-8"?><xsd:schema xmlns="/custom/myTest"xmlns:xsd="/2001/XMLSchema" xmlns:beans="/schema/beans"targetNamespace="/custom/mytest"elementFormDefault="qualified" attributeFormDefault="unqualified"><xsd:import namespace="/schema/beans"/><xsd:element name="executor"><xsd:complexType><xsd:complexContent><xsd:extension base="beans:identifiedType"><xsd:group ref="beans:beanElements" /><xsd:attribute name="name" type="xsd:string"/><xsd:attribute name="delay" type="xsd:int"/><xsd:attribute name="interval" type="xsd:int"/><xsd:attribute name="address" type="xsd:string"/><xsd:attribute name="entity" type="xsd:string"/></xsd:extension></xsd:complexContent></xsd:complexType></xsd:element><xsd:element name="entity"><xsd:complexType><xsd:complexContent><xsd:extension base="beans:identifiedType"><xsd:group ref="beans:beanElements" /><xsd:attribute name="name" type="xsd:string"/><xsd:attribute name="splitBy" type="xsd:string"/><xsd:attribute name="sql" type="xsd:string"/><xsd:attribute name="dbTypeID"><xsd:simpleType><xsd:restriction base="xsd:int"><xsd:enumeration value="1" /><xsd:enumeration value="2" /><xsd:enumeration value="3" /></xsd:restriction></xsd:simpleType></xsd:attribute><xsd:attribute name="dbTypeName"><xsd:simpleType><xsd:restriction base="xsd:string"><xsd:enumeration value="mysql" /><xsd:enumeration value="oracle" /><xsd:enumeration value="sqlserver" /></xsd:restriction></xsd:simpleType></xsd:attribute></xsd:extension></xsd:complexContent></xsd:complexType></xsd:element></xsd:schema>

修改BeanDefinitionPaser如下

package com.ruishenh.spring.config;import java.util.List;public class MyBeanDefinitionParser2 extends AbstractSingleBeanDefinitionParser {private Class<?> clssze;public MyBeanDefinitionParser2(Class<?> cls) {this.clssze = cls;}@Overrideprotected String getBeanClassName(Element element) {return clssze.getName();}@Overrideprotected void doParse(Elementelement, ParserContext parserContext, BeanDefinitionBuilder builder) {List<Element> els = DomUtils.getChildElements(element);NamedNodeMap nnm = element.getAttributes();for (int i = 0; i <nnm.getLength(); i++) {Node node = nnm.item(i);String key = node.getLocalName();String value = node.getNodeValue();if ("id".equals(key)) {continue;}if ("entity".equals(key)){if(parserContext.getRegistry().containsBeanDefinition(value)) {builder.addPropertyValue(key,parserContext.getRegistry().getBeanDefinition(value));}else{builder.addPropertyReference(key,value);}}else{builder.addPropertyValue(key,value);}}for (Element element2 :els) {String name = element2.getAttribute("name");String value = element2.getAttribute("value");String ref = element2.getAttribute("ref");if (!StringUtils.hasText(ref)){builder.addPropertyValue(name,value);}else{if(parserContext.getRegistry().containsBeanDefinition(ref)) {builder.addPropertyValue(name,parserContext.getRegistry().getBeanDefinition(ref));}else{builder.addPropertyReference(name,ref);}}}}}

SpringBean的Xml修改成如下:

<?xml version="1.0"encoding="UTF-8"?><beans xmlns="/schema/beans"xmlns:xsi="/2001/XMLSchema-instance"xmlns:mi="/custom/mytest"xsi:schemaLocation="/schema/beans/schema/beans/spring-beans.xsd/custom/mytest/custom/mytest/myTest2.xsd"><mi:executor address="127.0.0.1" name="myexecutor"id="myexecutor"><property name="interval" value="5000"/><property name="delay" value="2000"/><property name="entity" ref="mye"/></mi:executor><mi:executor address="192.168.201.23" name="myexecutor2"id="myexecutor2" entity="mye2"><property name="interval" value="5000"/><property name="delay" value="2000"/></mi:executor><mi:entity name="mye" id="mye"><property name="dbTypeID" value="1"/><property name="dbTypeName" value="mysql" /><property name="splitBy" value="id"/><property name="sql" value="1"/></mi:entity><mi:entity name="mye2" id="mye2"><property name="dbTypeID" value="2"/><property name="dbTypeName" value="oracle" /><property name="splitBy" value="orderId"/><property name="sql" value="select * fromtablename" /></mi:entity></beans>

测试类:

packagecom.ruishenh.spring.test;importorg.springframework.context.support.FileSystemXmlApplicationContext;importcom.ruishenh.spring.config.MyEntity;importcom.ruishenh.spring.config.MyExecutor;publicclass Test {public static void main(String[] args) {String conf ="classpath:spring/myTest2.xml";FileSystemXmlApplicationContext ac = newFileSystemXmlApplicationContext(conf);MyExecutor me = (MyExecutor)ac.getBean("myexecutor2");MyExecutor me2 = (MyExecutor)ac.getBean("myexecutor");System.out.println(me.toString());System.out.println(me2.toString());MyEntity mye = (MyEntity) ac.getBean("mye");MyEntity mye2 = (MyEntity)ac.getBean("mye2");System.out.println(mye.toString());System.out.println(mye2.toString());}}

运行结果:

MyExecutor[name=myexecutor2,delay=2000,interval=5000,address=192.168.201.23,entity=MyEntity[dbTypeID=2,dbTypeName=oracle,splitBy=orderId,sql=select* from tablename,name=mye2]]

MyExecutor[name=myexecutor,delay=2000,interval=5000,address=127.0.0.1,entity=MyEntity[dbTypeID=1,dbTypeName=mysql,splitBy=id,sql=1,name=mye]]

MyEntity[dbTypeID=1,dbTypeName=mysql,splitBy=id,sql=1,name=mye]

MyEntity[dbTypeID=2,dbTypeName=oracle,splitBy=orderId,sql=select* from tablename,name=mye2]

实体类和基本信息在:/ruishenh/article/details/33741501

本内容不代表本网观点和政治立场,如有侵犯你的权益请联系我们处理。
网友评论
网友评论仅供其表达个人看法,并不表明网站立场。