How to call the implementation class dynamically by springboot

This article mainly introduces how springboot dynamically calls the implementation class, which has a certain reference value. Interested friends can refer to it. I hope you will gain a lot after reading this article. Let's take a look at it.

Springboot dynamic invocation implementation class

Define multiple types of rules

/ * enumeration of data rule processing types * / public enum RuleType {MYRULEBYID1, MYRULEBYID2}

Interface

Import java.util.List;import java.util.Map; public interface DataRuleParse {/ * get the type of rule processing * @ return * / RuleType getRuleType (); / * generate sql * @ return * / List getSQl (Map paramMap) according to the rule processing type;}

Implementation class, rule type 1

Package gds.application.masterdata.DataRuleParse; import gds.application.common.constants.ConnectorConstants;import gds.application.common.constants.XmlConfigurationContants;import gds.application.common.util.ApplicationContextUtil;import gds.application.masterdata.constants.ConnectDataProcessesConstants;import gds.application.masterdata.service.impl.BatchExecutionSqlServiceImpl;import org.springframework.stereotype.Component; import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map @ Componentpublic class MYRULEBYID1 implements DataRuleParse {@ Override public RuleType getRuleType () {return RuleType.MYRULEBYID1;} @ Override public List getSQl (Map paramMap) {/ / Rule 1 implementation method return null;}

Implementation class, rule type 2

Package gds.application.masterdata.DataRuleParse; import gds.application.common.constants.ConnectorConstants;import gds.application.common.constants.XmlConfigurationContants;import gds.application.common.util.ApplicationContextUtil;import gds.application.masterdata.constants.ConnectDataProcessesConstants;import gds.application.masterdata.service.impl.BatchExecutionSqlServiceImpl;import org.springframework.stereotype.Component; import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map @ Componentpublic class MYRULEBYID2 implements DataRuleParse {@ Override public RuleType getRuleType () {return RuleType.MYRULEBYID2;} @ Override public List getSQl (Map paramMap) {/ / Rule 2 implementation method return null;}

Factory class, calling method to get concrete implementation class

Import org.springframework.beans.BeansException;import org.springframework.context.ApplicationContext;import org.springframework.context.ApplicationContextAware;import org.springframework.stereotype.Component; import java.util.HashMap;import java.util.Map; / * Rule conversion factory class * / @ Componentpublic class DataRuleParseFactory implements ApplicationContextAware {private static Map dataRuleBeanMap; @ Override public void setApplicationContext (ApplicationContext applicationContext) throws BeansException {Map map = applicationContext.getBeansOfType (DataRuleParse.class); dataRuleBeanMap = new HashMap () Map.forEach ((key, value)-> dataRuleBeanMap.put (value.getRuleType (). ToString (), value);} public static T getTrafficMode (String ruleType) {return (T) dataRuleBeanMap.get (ruleType);}}

Obtain the corresponding method according to the parameter. RuleName is MYRULEBYID1 or MYRULEBYID2.

DataRuleParse dataRuleParse= DataRuleParseFactory.getTrafficMode (ruleName); List sqlList=dataRuleParse.getSQl (paramMap); springboot manually get the implementation class import org.springframework.web.context.WebApplicationContext;import org.springframework.web.context.support.WebApplicationContextUtils;WebApplicationContext cxt = WebApplicationContextUtils.getWebApplicationContext (sc); weixinService = (IWeixinService) cxt.getBean ("IWeixinService"); qqService = (IQQService) cxt.getBean ("IQQService") Thank you for reading this article carefully. I hope the article "how to dynamically call the implementation class of springboot" shared by the editor will be helpful to everyone. At the same time, I also hope that you will support us and pay attention to the industry information channel. More related knowledge is waiting for you to learn!