jaxb解析xml 实例

JaxbReadXml文件
package com.jaxb;

import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.StringReader;
import java.text.MessageFormat;

import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Unmarshaller;
import javax.xml.transform.stream.StreamSource;

import megen.util.jaxb.JaxbContextManager;

@SuppressWarnings("
public class JaxbReadXml {

    @SuppressWarnings({ "unchecked" })
    public static T readString(Class clazz, String context) throws JAXBException, IOException {
        String res = "";
        StringBuffer buffer = null;
        try {

                FileInputStream fr = new FileInputStream("C:\\test.xml");
                buffer = new StringBuffer();
                BufferedReader in = new BufferedReader(new InputStreamReader(fr));
                buffer = new StringBuffer();
                String line = "";
                while ((line = in.readLine()) != null) {
                    buffer.append(line);
                }
                res = buffer.toString();

//            JAXBContext jc = JAXBContext.newInstance(clazz);
//            Unmarshaller u = jc.createUnmarshaller();
                //加载映射bean类
            JAXBContext jaxbContext = JaxbContextManager.getInstance().getJaxbContext(
                    "com.jaxb.TestOrgs");
                Unmarshaller um = jaxbContext.createUnmarshaller();
                StreamSource streamSource = new StreamSource(new StringReader(buffer.toString()));
                return (T) um.unmarshal(streamSource); // 返回一个结构
            //return (T) u.unmarshal(new File(context));
        } catch (JAXBException e) {
            // logger.trace(e);
            throw e;
        }
    }

    @SuppressWarnings({ "unchecked" })
    public static T readConfig(Class clazz, String config, Object... arguments) throws IOException,
            JAXBException {
        InputStream is = null;
        try {
            if (arguments.length > 0) {
                config = MessageFormat.format(config, arguments);
            }
            // logger.trace("read configFileName=" + config);
            JAXBContext jc = JAXBContext.newInstance(clazz);
            Unmarshaller u = jc.createUnmarshaller();
            is = new FileInputStream(config);
            return (T) u.unmarshal(is);
        } catch (IOException e) {
            // logger.trace(config, e);
            throw e;
        } catch (JAXBException e) {
            // logger.trace(config, e);
            throw e;
        } finally {
            if (is != null) {
                is.close();
            }
        }
    }

    @SuppressWarnings({ "unchecked" })
    public static T readConfigFromStream(Class clazz, InputStream dataStream) throws JAXBException {
        try {
            JAXBContext jc = JAXBContext.newInstance(clazz);
            Unmarshaller u = jc.createUnmarshaller();
            return (T) u.unmarshal(dataStream);
        } catch (JAXBException e) {
            // logger.trace(e);
            throw e;
        }
    }

    @SuppressWarnings("resource")
    public static void main(String[] args) throws JAXBException, IOException {
        StringBuffer buffer = null;
        TestOrgs testOrgs = JaxbReadXml.readString(TestOrgs.class, "src/uktbj70/com/jaxb/test.xml");
        //System.out.println(testOrgs.toString());
        //        System.out.println(testOrgs.getSize());
        //        System.out.println(testOrgs.getBatchNumber());
        //        System.out.println(testOrgs.getErrmsg());
//        for (TestOrg o : testOrgs) {
//            System.out.println(o.getOrgName());
//        }
        try {
            FileInputStream fr = new FileInputStream("src/uktbj70/com/jaxb/test.xml");
            buffer = new StringBuffer();
            BufferedReader in = new BufferedReader(new InputStreamReader(fr));
            buffer = new StringBuffer();
            String line = "";
            while ((line = in.readLine()) != null) {
                buffer.append(line);
            }
            System.out.println(buffer.toString());
        } catch (FileNotFoundException e) {
            // TODO 自動生成された catch ブロック
            e.printStackTrace();
        }
    }
}


TestOrg 文件

package com.jaxb;

import java.util.Date;

import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlElement;


@XmlAccessorType(XmlAccessType.FIELD)
// 用了这个之后就会自动忽略setter/getter方法。不用这个就需要去掉注解，需要保证属性名和xml里的表签名一致
public class TestOrg {
    @XmlElement(name = "org_id")
    private Long orgId;
    @XmlElement(name = "parent_id")
    private Long parentId;
    @XmlElement(name = "org_name")
    private String orgName;
    @XmlElement(name = "org_code")
    private String orgCode;
    @XmlElement(name = "org_type")
    private String orgType;
    @XmlElement(name = "start_d")
    private Date startDate;
    @XmlElement(name = "end_d")
    private Date endDate;
    @XmlElement(name = "attribute1")
    private String attribute;
    @XmlElement(name = "insert_t")
    private Date insertTime;

    @SuppressWarnings("
    public Long getOrgId() {
        return orgId;
    }

    @SuppressWarnings("
    public void setOrgId(Long orgId) {
        this.orgId = orgId;
    }

    @SuppressWarnings("
    public Long getParentId() {
        return parentId;
    }

    @SuppressWarnings("
    public void setParentId(Long parentId) {
        this.parentId = parentId;
    }

    @SuppressWarnings("
    public String getOrgName() {
        return orgName;
    }

    @SuppressWarnings("
    public void setOrgName(String orgName) {
        this.orgName = orgName;
    }

    @SuppressWarnings("
    public String getOrgCode() {
        return orgCode;
    }

    @SuppressWarnings("
    public void setOrgCode(String orgCode) {
        this.orgCode = orgCode;
    }
    @SuppressWarnings("
    public String getOrgType() {
        return orgType;
    }
    @SuppressWarnings("
    public void setOrgType(String orgType) {
        this.orgType = orgType;
    }
    @SuppressWarnings("
    public Date getStartDate() {
        return startDate;
    }
    @SuppressWarnings("
    public void setStartDate(Date startDate) {
        this.startDate = startDate;
    }
    @SuppressWarnings("
    public Date getEndDate() {
        return endDate;
    }
    @SuppressWarnings("
    public void setEndDate(Date endDate) {
        this.endDate = endDate;
    }
    @SuppressWarnings("
    public String getAttribute() {
        return attribute;
    }
    @SuppressWarnings("
    public void setAttribute(String attribute) {
        this.attribute = attribute;
    }
    @SuppressWarnings("
    public Date getInsertTime() {
        return insertTime;
    }
    @SuppressWarnings("
    public void setInsertTime(Date insertTime) {
        this.insertTime = insertTime;
    }

}

TestOrgs 文件
package com.jaxb;

import java.util.ArrayList;
import java.util.List;

import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlAttribute;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;

@SuppressWarnings({ "serial", "
@XmlRootElement(name = "orgs")
@XmlAccessorType(XmlAccessType.FIELD)
public class TestOrgs extends ArrayList { // 泛化, 聚合

    @XmlAttribute(name = "size")
    private int size;
    @XmlAttribute(name = "batch_number")
    private Long batchNumber;
    @XmlAttribute(name = "errmsg")
    private String errmsg;

    @XmlElement(name = "org")
    public List getOrgs() {
        return this;
    }

    public int getSize() {
        return size;
    }

    public void setSize(int size) {
        this.size = size;
    }

    public Long getBatchNumber() {
        return batchNumber;
    }

    public void setBatchNumber(Long batchNumber) {
        this.batchNumber = batchNumber;
    }

    public String getErrmsg() {
        return errmsg;
    }

    public void setErrmsg(String errmsg) {
        this.errmsg = errmsg;
    }

}


test.xml 文件
<?xml version="1.0" encoding="UTF-8"?>
<orgs size="7095" batch_number="20130704110039" errmsg="">
    <org>
        <org_id>16817</org_id>
        <parent_id>9233</parent_id>
        <org_name>512AAS.suzhou</org_name>
        <org_code>512AAS</org_code>
        <org_type>deport</org_type>
        <start_d>2011-12-28</start_d>
        <end_d></end_d>
        <attribute1></attribute1>
        <insert_t>2013-7-4 10:32:09</insert_t>
    </org>
    <org>
        <org_id>16817</org_id>
        <parent_id>9233</parent_id>
        <org_name>512AAS.hunshan</org_name>
        <org_code>512AAS</org_code>
        <org_type>deport</org_type>
        <start_d>2011-12-28</start_d>
        <end_d></end_d>
        <attribute1></attribute1>
        <insert_t>2013-7-4 10:32:09</insert_t>
    </org>
    <org>
        <org_id>16817</org_id>
        <parent_id>9233</parent_id>
        <org_name>512AAS.putian</org_name>
        <org_code>512AAS</org_code>
        <org_type>deport</org_type>
        <start_d>2011-12-28</start_d>
        <end_d></end_d>
        <attribute1></attribute1>
        <insert_t>2013-7-4 10:32:09</insert_t>
    </org>
    <org>
        <org_id>16817</org_id>
        <parent_id>9233</parent_id>
        <org_name>512AAS.nanjing</org_name>
        <org_code>512AAS</org_code>
        <org_type>deport</org_type>
        <start_d>2011-12-28</start_d>
        <end_d></end_d>
        <attribute1></attribute1>
        <insert_t>2013-7-4 10:32:09</insert_t>
    </org>
    <org>
        <org_id>16817</org_id>
        <parent_id>9233</parent_id>
        <org_name>512AAS.fuzhou</org_name>
        <org_code>512AAS</org_code>
        <org_type>deport</org_type>
        <start_d>2011-12-28</start_d>
        <end_d></end_d>
        <attribute1></attribute1>
        <insert_t>2013-7-4 10:32:09</insert_t>
    </org>
</orgs>