JAXB介绍二

链接上一遍 JAXB介绍一 , 本节主要介绍解析xml的步骤, 下面的例子是在实际项目中运用的, 把它拿出来单独写一个java运行程序.

5. 测试实例

先给出我的代码结构图:

再给出要解析的Script.xml文件的内容:

<?xml version='1.0' encoding='UTF-8' ?>

<Script>

  <SchemaVersion MajorVerNo="1" MinorVerNo="0" />

    <Activity>

        <Action>ReinstallTV</Action>

    </Activity>

    <Activity>

        <Action>TuneChannel</Action>

        <Priority>1</Priority>

        <Attributes>

            <ChannelNumber>340</ChannelNumber>

        </Attributes>

    </Activity>

</Script>

下面进入正题:

1. 给出Script.java的代码, 其实就是对Script.xml的类似Bean构建:

package com.demo.util;

import java.util.List;

import javax.xml.bind.annotation.XmlAccessType;

import javax.xml.bind.annotation.XmlAccessorType;

import javax.xml.bind.annotation.XmlElement;

import javax.xml.bind.annotation.XmlRootElement;

import javax.xml.bind.annotation.XmlType;

@XmlRootElement(name = "Script")

@XmlAccessorType(XmlAccessType.FIELD)

@XmlType(propOrder = {"schemaVersion","activities"})

public class Script {

    @XmlElement(name = "SchemaVersion", required = false)

    private SchemaVersion schemaVersion;

    @XmlElement(name = "Activity", required = false)

    private List<Activity> activities;

    public SchemaVersion getSchemaVersion() {

        return schemaVersion;

    }

    public void setSchemaVersion(SchemaVersion schemaVersion) {

        this.schemaVersion = schemaVersion;

    }

    public List<Activity> getActivity() {

        return activities;

    }

    public void setActivity(List<Activity> activities) {

        this.activities = activities;

    }

}

2. 给出SchemaVersion.java的代码:

package com.demo.util;

import javax.xml.bind.annotation.XmlAccessType;

import javax.xml.bind.annotation.XmlAccessorType;

import javax.xml.bind.annotation.XmlAttribute;

import javax.xml.bind.annotation.XmlRootElement;

import javax.xml.bind.annotation.XmlType;

@XmlRootElement(name = "SchemaVersion")

@XmlAccessorType(XmlAccessType.FIELD)

@XmlType(propOrder = {"majorVerNo","minorVerNo"})

public class SchemaVersion {

    @XmlAttribute(name = "MajorVerNo", required = false)

    protected String majorVerNo;

    @XmlAttribute(name = "MinorVerNo", required = false)

    protected String minorVerNo;

    public String getMajorVerNo() {

        return majorVerNo;

    }

    public void setMajorVerNo(String majorVerNo) {

        this.majorVerNo = majorVerNo;

    }

    public String getMinorVerNo() {

        return minorVerNo;

    }

    public void setMinorVerNo(String minorVerNo) {

        this.minorVerNo = minorVerNo;

    }

}

3. 给出Activity.java的代码结构:

package com.demo.util;

import javax.xml.bind.annotation.XmlAccessType;

import javax.xml.bind.annotation.XmlAccessorType;

import javax.xml.bind.annotation.XmlElement;

import javax.xml.bind.annotation.XmlRootElement;

import javax.xml.bind.annotation.XmlType;

@XmlRootElement(name = "Activity")

@XmlAccessorType(XmlAccessType.FIELD)

@XmlType(propOrder = {"action","priority","attributes"})

public class Activity {

    @XmlElement(name = "Action", required = false)

    protected String action;

    @XmlElement(name = "Priority", required = false)

    protected String priority;

    @XmlElement(name = "Attributes", required = false)

    protected Attributes attributes;

    public String getAction() {

        return action;

    }

    public void setAction(String action) {

        this.action = action;

    }

    public String getPriority() {

        return priority;

    }

    public void setPriority(String priority) {

        this.priority = priority;

    }

    public Attributes getAttributes() {

        return attributes;

    }

    public void setAttributes(Attributes attributes) {

        this.attributes = attributes;

    }

}

4. 给出Attributes.java的代码:

package com.demo.util;

import javax.xml.bind.annotation.XmlAccessType;

import javax.xml.bind.annotation.XmlAccessorType;

import javax.xml.bind.annotation.XmlElement;

import javax.xml.bind.annotation.XmlRootElement;

import javax.xml.bind.annotation.XmlType;

@XmlRootElement(name = "Attributes")

@XmlAccessorType(XmlAccessType.FIELD)

@XmlType(propOrder = {"channelNumber"})

public class Attributes {

    @XmlElement(name = "ChannelNumber", required = false)

    protected String channelNumber;

    public String getChannelNumber() {

        return channelNumber;

    }

    public void setChannelNumber(String channelNumber) {

        this.channelNumber = channelNumber;

    }

}

5. 给出Test.java对Script.xml处理的代码:

package com.demo.test;

import java.io.BufferedWriter;

import java.io.File;

import java.io.FileWriter;

import java.io.IOException;

import java.util.List;

import javax.xml.bind.JAXBContext;

import javax.xml.bind.JAXBException;

import javax.xml.bind.Unmarshaller;

import com.demo.util.Activity;

import com.demo.util.Script;

public class Test {

    public static void main(String[] args) {

        // TODO Auto-generated method stub

        
　　     // Script.xml路径可以随时改变

        String SCRIPT_XML_PATH = "C:/Script/Script.xml";

        try {

            File file = new File(SCRIPT_XML_PATH);

            JAXBContext jaxbContext = JAXBContext.newInstance(Script.class);

            Unmarshaller unmarshaller = jaxbContext.createUnmarshaller();

            Script script = (Script) unmarshaller.unmarshal(file);

            System.out.println("SchemaVersion=>MajorVerNo="+script.getSchemaVersion().getMajorVerNo());

            System.out.println("SchemaVersion=>MinorVerNo="+script.getSchemaVersion().getMinorVerNo());

            boolean hasReinstallTvCommand = false;

            if (script != null) {

                List<Activity> activities = script.getActivity();

                int activitySize = activities.size();

                if (activitySize > 0) {

                    for(Activity activity : activities) {

                        System.out.println("Activity:");

                        if (activity.getAction() != null) {

                            System.out.println("   Action="+activity.getAction());

                            if ("ReinstallTV".equalsIgnoreCase(activity.getAction())) {

                                hasReinstallTvCommand = true;

                                //break;

                            }

                        }

                        if (activity.getPriority() != null) {

                            System.out.println("   Priority="+activity.getPriority());

                        }

                        if (activity.getAttributes() != null) {

                            if (activity.getAttributes().getChannelNumber() != null) {

                                System.out.println("   ChannelNumber="+activity.getAttributes().getChannelNumber());

                            }

                        }

                    }

                }

            }

            System.out.println("hasReinstallTvCommand="+hasReinstallTvCommand);

        } catch (JAXBException e) {

            System.out.println("e="+e.getMessage());

        }

6. 给出最后Test.java运行的代码, 打印出的log:

SchemaVersion=>MajorVerNo=1

SchemaVersion=>MinorVerNo=0

Activity:

   Action=ReinstallTV

Activity:

   Action=TuneChannel

   Priority=1

   ChannelNumber=340

hasReinstallTvCommand=true

待续...

巴特西

JAXB介绍二

5. 测试实例

下面进入正题:

1. 给出Script.java的代码, 其实就是对Script.xml的类似Bean构建:

2. 给出SchemaVersion.java的代码:

3. 给出Activity.java的代码结构:

4. 给出Attributes.java的代码:

5. 给出Test.java对Script.xml处理的代码:

6. 给出最后Test.java运行的代码, 打印出的log:

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