31 反射方式给类的属性赋值 和 对象赋值（clone）

1、配置类

package com.da.tool.util.configuration.reflect;

/**
 */
public class JobInfo {

    private String jobName;

    private String jobId;

    public String getJobName() {
        return jobName;
    }

    public void setJobName(String jobName) {
        this.jobName = jobName;
    }

    public String getJobId() {
        return jobId;
    }

    public void setJobId(String jobId) {
        this.jobId = jobId;
    }
}


package com.da.tool.util.configuration.reflect;

/**
 */
public class TimedJob extends JobInfo {


    private String startTime;

    private String stopTime;

    public String getStartTime() {
        return startTime;
    }

    public void setStartTime(String startTime) {
        this.startTime = startTime;
    }

    public String getStopTime() {
        return stopTime;
    }

    public void setStopTime(String stopTime) {
        this.stopTime = stopTime;
    }
}

2、反射类

package com.da.tool.util.configuration.reflect;


import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.Date;
import java.util.Properties;
import java.util.Set;

/**
 */
public class Reflect {


    public static void main(String[] args) {


        Properties prop = new Properties();
        prop.setProperty("jobName", "timingJob");
        prop.setProperty("jobId", "1");
        prop.setProperty("startTime", String.valueOf(new Date().getTime()));
        prop.setProperty("stopTime", String.valueOf(new Date().getTime() + 1000 * 60 * 60 * 24));

        JobInfo jobInfo = (JobInfo) setTarget(prop,new TimedJob());

        TimedJob timedJob=(TimedJob) jobInfo;

        System.out.println("jobName = " + timedJob.getJobName());
        System.out.println("jobId = " + timedJob.getJobId());
        System.out.println("startTime = " + timedJob.getStartTime());
        System.out.println("stopTime = " + timedJob.getStopTime());




    }

    /**
     * 给实例instance的属性赋值
     *
     * @param prop
     * @param instance
     * @return
     */
    public static Object setTarget(Properties prop, Object instance) {

        Set<Object> keys = prop.keySet();

        for (Object key : keys) {

            String name = String.valueOf(key);

            String value = prop.getProperty(String.valueOf(key));

            try {
                Method method=instance.getClass().getMethod("set" + upperFirstChar(name), String.class);
                method.invoke(instance,value);
            } catch (NoSuchMethodException e) {
                //set方法不存在
                e.printStackTrace();
            } catch (InvocationTargetException e) {
                //
                e.printStackTrace();
            } catch (IllegalAccessException e) {
                e.printStackTrace();
            }}
        return instance;
    }

    /**
     * 将字符串的首字母大写
     *
     * @param string
     * @return
     */
    public static String upperFirstChar(String string) {
        return string.substring(0, 1).toUpperCase() + string.substring(1);
    }
}

jobName = timingJob
jobId = 1
startTime = 1485152366304
stopTime = 1485238766304

2、对象赋值（clone）

<properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <surefire.redirectTestOutputToFile>true</surefire.redirectTestOutputToFile>
    <groovy.version>2.1.6</groovy.version>
    <slf4j.version>1.7.5</slf4j.version>
</properties>
<dependencies>
    <dependency>
        <groupId>org.codehaus.groovy</groupId>
        <artifactId>groovy-all</artifactId>
        <version>${groovy.version}</version>
    </dependency>
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-log4j12</artifactId>
        <version>${slf4j.version}</version>
    </dependency>
    <dependency>
        <groupId>commons-configuration</groupId>
        <artifactId>commons-configuration</artifactId>
        <version>1.6</version>
    </dependency>
    <dependency>
        <groupId>commons-lang</groupId>
        <artifactId>commons-lang</artifactId>
        <version>2.6</version>
    </dependency>
</dependencies>

package com.da.tool.util.configuration.reflect;

/**
 */
public class JobInfo implements Cloneable{

    private String jobName;

    private String jobId;

    public String getJobName() {
        return jobName;
    }

    public void setJobName(String jobName) {
        this.jobName = jobName;
    }

    public String getJobId() {
        return jobId;
    }

    public void setJobId(String jobId) {
        this.jobId = jobId;
    }

    @Override
    public Object clone() {
        JobInfo ic = null;
        try{
            ic = (JobInfo)super.clone();
        }catch(CloneNotSupportedException e) {
            e.printStackTrace();
        }
        return ic;
    }
}

测试类

package com.da.tool.util.configuration.clone;

import com.da.tool.util.configuration.reflect.TimedJob;
import org.apache.commons.lang.ObjectUtils;

/**
 */
public class CloneInstance {

    public static void main(String[] args) {


        TimedJob timedJob=new TimedJob();
        timedJob.setJobName("jobname");
        timedJob.setJobId("1");
        timedJob.setStartTime("123");
        timedJob.setStopTime("789");

        TimedJob cloneTimedJob1= (TimedJob)ObjectUtils.clone(timedJob);
        TimedJob cloneTimedJob2= (TimedJob)ObjectUtils.clone(timedJob);

        System.out.println("jobName = " + cloneTimedJob1.getJobName());
        System.out.println("jobId = " + cloneTimedJob1.getJobId());
        System.out.println("startTime = " + cloneTimedJob1.getStartTime());
        System.out.println("stopTime = " + cloneTimedJob1.getStopTime());

        System.out.println("jobName = " + cloneTimedJob1.getJobName());
        System.out.println("jobId = " + cloneTimedJob1.getJobId());
        System.out.println("startTime = " + cloneTimedJob1.getStartTime());
        System.out.println("stopTime = " + cloneTimedJob1.getStopTime());

    }
}

测试输出

jobName = jobname
jobId = 1
startTime = 123
stopTime = 789
jobName = jobname
jobId = 1
startTime = 123
stopTime = 789