先贴上工具类代码。如下:
package znxd.lxynzl.bank.base;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Marshaller;
import javax.xml.bind.Unmarshaller;
import java.io.StringReader;
import java.io.StringWriter;
/**
* xml解析工具类
*/
public class XmlUtils {
/**
* xml字符串转对象
* @param clazz
* @param xmlStr
* @return
*/
public static Object xmlStrToObject(Class clazz, String xmlStr) {
Object xmlObject = null;
try {
JAXBContext context = JAXBContext.newInstance(clazz);
// 进行将Xml转成对象的核心接口
Unmarshaller unmarshaller = context.createUnmarshaller();
StringReader sr = new StringReader(xmlStr);
xmlObject = unmarshaller.unmarshal(sr);
} catch (JAXBException e) {
e.printStackTrace();
}
return xmlObject;
}
/**
* 对象转xml字符串
* @param obj
* @param load
* @return
* @throws JAXBException
*/
public static String objectToXmlStr(Object obj,Class<?> load){
String result = "";
try{
JAXBContext context = JAXBContext.newInstance(load);
Marshaller marshaller = context.createMarshaller();
marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
marshaller.setProperty(Marshaller.JAXB_ENCODING, "GBK");
StringWriter writer = new StringWriter();
marshaller.marshal(obj,writer);
result = writer.toString();
}catch (Exception e){
e.printStackTrace();
}
return result;
}
}
首先,要有个xml报文,我找了个复杂点的,如下:
<bocb2e version="100" security="true" lang="chs">
<head>
<termid>E127000000001termid>
<trnid>20060704001trnid>
<custid>12345678custid>
<cusopr>BOCcusopr>
<trncod>b2e0001trncod>
head>
<trans>
<trn-b2e0001-rq>
<b2e0001-rq>
<custdt>20060704091000custdt>
<oprpwd>88888888oprpwd>
<ceitinfo>MIIE9AYJKoZIhvcNA……ceitinfo>
b2e0001-rq>
trn-b2e0001-rq>
trans>
bocb2e>
大体可以看出来,首先最外边是根标签
,下一级是和
,然后再往里一层层的。
既然要xml与对象转换,那自然要先创建对象,因为按照上边的报文来看,每一层即一个对象,这样的话就会有好几个对象。
虽然多,但是并不复杂,只需要把xml标签对应上即可,另外该工具不需要额外引入依赖,属于java自己的工具。
主要就三个注解,我理解的意思如下:
@XmlRootElement
表示当前标签的名字
@XmlType
表示当前对象里,含有的下级标签对应的对象的属性名。
@XmlElement
表示当前对象的属性,对应到xml里的标签名。
需要创建的对象具体如下:
import javax.xml.bind.annotation.*;
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(propOrder={"head","trans"})
@XmlRootElement(name="bocb2e")
public class BOCSignRequestXml {
private SignRequestHead head;
private SignRequestTrans trans;
//省略get set方法
}
import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;
/**
* 签名请求head体
*/
@XmlAccessorType(XmlAccessType.FIELD)
@XmlRootElement(name="head")
public class SignRequestHead {
@XmlElement(name="termid")
private String termid;
@XmlElement(name="trnid")
private String trnid;
@XmlElement(name="custid")
private String custid;
@XmlElement(name="cusopr")
private String cusopr = "BOC";
@XmlElement(name="trncod")
private String trncod = "b2e0001";
//省略get set方法
}
import javax.xml.bind.annotation.*;
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(propOrder={"trnB2e0001Rq"})
@XmlRootElement(name="trans")
public class SignRequestTrans {
@XmlElement(name="trn-b2e0001-rq")
private TrnB2e0001Rq trnB2e0001Rq;
//省略get set方法
}
import javax.xml.bind.annotation.*;
@XmlAccessorType(XmlAccessType.FIELD)
@XmlType(propOrder={"b2e0001Rq"})
@XmlRootElement(name="trn-b2e0001-rq")
public class TrnB2e0001Rq {
@XmlElement(name="b2e0001-rq")
private B2e0001Rq b2e0001Rq;
//省略get set方法
}
import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;
@XmlAccessorType(XmlAccessType.FIELD)
@XmlRootElement(name="b2e0001-rq")
public class B2e0001Rq {
@XmlElement(name="custdt")
private String custdt;
@XmlElement(name="oprpwd")
private String oprpwd;
@XmlElement(name="ceitinfo")
private String ceitinfo;
//省略get set方法
}
xml字符串转对象的测试方法如下:
public static void main(String[] args){
//签到
String xmlStr ="" +
"" +
"" +
"E127000000001 " +
"20060704001 " +
"12345678 " +
"BOC " +
"b2e0001 " +
"" +
"" +
"" +
"" +
"20060704091000 " +
"88888888 " +
"MIIE9AYJKoZIhvcNA…… " +
"" +
"" +
"" +
"";
BOCSignRequestXml requestXml = (BOCSignRequestXml) XmlUtils.xmlStrToObject(BOCSignRequestXml.class,xmlStr);
System.out.println(requestXml.getTrans().getTrnB2e0001Rq()
.getB2e0001Rq().getOprpwd());
System.out.println(requestXml.getHead().getTrncod());
执行后的结果如下:
88888888
b2e0001
对象转xml字符串的测试方法如下:
public static void main(String[] args){
BOCSignRequestXml requestXml1 = new BOCSignRequestXml();
SignRequestHead requestHead = new SignRequestHead();
requestHead.setCusopr("2222");
requestXml1.setHead(requestHead);
String xmlStrTo = XmlUtils.objectToXmlStr(requestXml1,BOCSignRequestXml.class);
System.out.println(xmlStrTo);
}
执行后的结果如下:
<?xml version="1.0" encoding="GBK" standalone="yes"?>
<bocb2e>
<head>
<cusopr>2222</cusopr>
<trncod>b2e0001</trncod>
</head>
</bocb2e>
以上即是xml字符串与对象之间的转换方法。亲测,灰常好用。