JAXB解析xml

package com.jaxb;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.text.MessageFormat;

import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Unmarshaller;

public class JaxbReadXml {

@SuppressWarnings("unchecked")
public static <T> T readString(Class<T> clazz, String context) throws JAXBException {
try {
JAXBContext jc = JAXBContext.newInstance(clazz);
Unmarshaller u = jc.createUnmarshaller();
return (T) u.unmarshal(new File(context));
} catch (JAXBException e) {
// logger.trace(e);
throw e;
}
}

@SuppressWarnings("unchecked")
public static <T> T readConfig(Class<T> 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> T readConfigFromStream(Class<T> 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;
}
}

public static void main(String[] args) throws JAXBException {
TestOrgs testOrgs = JaxbReadXml.readString(TestOrgs.class, "test/test.xml");
System.out.println(testOrgs.getSize());
System.out.println(testOrgs.getBatchNumber());
System.out.println(testOrgs.getErrmsg());
for (TestOrg o : testOrgs) {
System.out.println(o.getOrgName());
}
}
}

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<TestOrg> { // 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<TestOrg> 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;
}

}

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;

/**
* <pre>
*     If you annotate your Artifact class with the annotation:
*  @XmlAccessorType(XmlAccessType.FIELD)
*  then you do not need to annotate the fields with @XmlElement and the
*  setter/getter methods will be ignored.
* </pre>
*
* @author User
*/
@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;

public Long getOrgId() {
return orgId;
}

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

public Long getParentId() {
return parentId;
}

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

public String getOrgName() {
return orgName;
}

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

public String getOrgCode() {
return orgCode;
}

public void setOrgCode(String orgCode) {
this.orgCode = orgCode;
}

public String getOrgType() {
return orgType;
}

public void setOrgType(String orgType) {
this.orgType = orgType;
}

public Date getStartDate() {
return startDate;
}

public void setStartDate(Date startDate) {
this.startDate = startDate;
}

public Date getEndDate() {
return endDate;
}

public void setEndDate(Date endDate) {
this.endDate = endDate;
}

public String getAttribute() {
return attribute;
}

public void setAttribute(String attribute) {
this.attribute = attribute;
}

public Date getInsertTime() {
return insertTime;
}

public void setInsertTime(Date insertTime) {
this.insertTime = insertTime;
}

}

<?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.苏州沧浪区</org_name>
<org_code>512AAS</org_code>
<org_type>门店部门</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.苏州沧浪区</org_name>
<org_code>512AAS</org_code>
<org_type>门店部门</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.苏州沧浪区</org_name>
<org_code>512AAS</org_code>
<org_type>门店部门</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.苏州沧浪区</org_name>
<org_code>512AAS</org_code>
<org_type>门店部门</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.苏州沧浪区</org_name>
<org_code>512AAS</org_code>
<org_type>门店部门</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>