Java系列： 我的第一个spring aop练习

看《Spring in action》有一段时间了，陆续也都看懂了，但是看懂和自己动手写确实是两回事，今天花了几个小时陆续开始安装spring，开始使用DI，然后使用AOP，在写AOP例子代码的过程中遇到一个编译错误，调试了很久，最终找到愿意了，少加了一个jar包，在pom文件中添加之后就ok了。

1 package com.DbInterface.config;
2 
3 public interface SetupTable {
4     public int readSetupNodeByNodeTypeId(int nodeType, int nodeId, boolean includeChild);    
5     public int readAllNodes();
6     public int writeNode(int nodeType, int nodeId, String nodeName);
7     public int deleteNode(int nodeType, int nodeId);
8 }

 

package com.DbInterface;

import com.DbInterface.config.*;

public class DbInterface {
    public SetupTable getSetupTable() {
        return setupTable;
    }
    public void setSetupTable(SetupTable setupTable) {
        this.setupTable = setupTable;
    }
    public RealtimeTable getRealtimeTable() {
        return realtimeTable;
    }
    public void setRealtimeTable(RealtimeTable realtimeTable) {
        this.realtimeTable = realtimeTable;
    }
    public CommandTable getCommandTable() {
        return commandTable;
    }
    public void setCommandTable(CommandTable commandTable) {
        this.commandTable = commandTable;
    }
    
    private SetupTable setupTable;
    private RealtimeTable realtimeTable;
    private CommandTable commandTable;
}

 

package com.DbInterfaceForPG;

import com.DbInterface.config.SetupTable;

public class SetupTableForPG implements SetupTable {

    public int readSetupNodeByNodeTypeId(int nodeType, int nodeId, boolean includeChild) {
        System.out.println(String.format("readSetupNodeByNodeTypeId, nodeType=%d, nodeId=%d, includeChild=%b", nodeType, nodeId, includeChild));        
        return 0;
    }

    public int readAllNodes(){
        System.out.println("readAllNodes");
        return 0;
    }
    public int writeNode(int nodeType, int nodeId, String nodeName) {
        System.out.println(String.format("writeNode, nodeType=%d, nodeId=%d, nodeName=%s", nodeType, nodeId, nodeName));
        return 0;
    }

    public int deleteNode(int nodeType, int nodeId) {
        System.out.println(String.format("deleteNode, nodeType=%d, nodeId=%d", nodeType, nodeId));
        return 0;
    }

}

 

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:aop="http://www.springframework.org/schema/aop"
    xmlns:c="http://www.springframework.org/schema/c"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:p="http://www.springframework.org/schema/p"
    xmlns:util="http://www.springframework.org/schema/util"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.2.xsd
        http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.2.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd
        http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.2.xsd">
    
    <aop:config>
        <aop:aspect ref="logger">        
            <aop:pointcut id="dbmethod" expression="execution(* com.DbInterfaceForPG.SetupTableForPG.*(..))" />    
            <aop:before pointcut-ref="dbmethod" method="logBefore" />            
            <aop:after pointcut-ref="dbmethod" method="logAfter" />
        </aop:aspect>
    </aop:config>
    
    <bean id="dbInterface" class="com.DbInterface.DbInterface" autowire="byType"/>
    <bean id="setupTable" class="com.DbInterfaceForPG.SetupTableForPG"/>
    <bean id="logger" class="com.PecTrend.util.LoggerWithMethodName"/>    
</beans>

 

public class App 
{
    public static void main( String[] args )
    {
        ApplicationContext ctx = new ClassPathXmlApplicationContext("PecTrend.xml");
        DbInterface dbInterface = (DbInterface)ctx.getBean("dbInterface");
        if(dbInterface.getSetupTable() != null)
            dbInterface.getSetupTable().readSetupNodeByNodeTypeId(123, 456, false);
        else
            System.out.println("装配 setupTable 失败");        
    }
}