场景：发送请求获取用户信息java
传输消息格式： xmltcp
传输消息协议：tcp/ip , http工具
客户端请求xml消息：编码
<?xml version="1.0" encoding="utf-8" standalone="yes"?> <message> <head> <auth>001</auth> <sign>abc</sign> <version>1</version> </head> <body> <age>20</age> </body> </message
服务端响应xml消息：code
<?xml version="1.0" encoding="utf-8" standalone="yes"?> <message> <head> <recode>0000</recode> <reshow>返回成功</reshow> <version>1</version> </head> <body> <list> <map> <id>1</id> <name>john</name> <age>20</age> </map> <map> <id>2</id> <name>smith</name> <age>20</age> </map> </list> </body> </message>
java 请求xml消息生成：xml
DemoMessage msg = new DemoMessage();
DemoHead head = new DemoHead();
head.setAuth("001");head.setSign("abc");
DemoBody body = new DemoBody();
body.setAge("20");
body.setName("john");
msg.setHead(head);
msg.setBody(body);
//生成请求xml字符串
JAXBUtil util = new JAXBUtil();
String xmlStr = util.objectToXmlStr(msg, DemoMessage.class);
System.out.println(xmlStr);
java 解析响应xml对象
DemoRspMessage rspMsg1 = new DemoRspMessage(); JAXBUtil util = new JAXBUtil(); rspMsg1 = util.xmlToObj(rspMsg1, xmlRspStr);
java xml字符串,java对象转换工具类ip
public class JAXBUtil {
@SuppressWarnings("unchecked")
public String objectToXmlStr(Object obj, Class beanClass) throws Exception {
JAXBContext context = JAXBContext.newInstance(beanClass);
// 根据上下文获取marshaller对象
Marshaller marshaller = context.createMarshaller();
// 设置编码字符集
marshaller.setProperty(Marshaller.JAXB_ENCODING, "UTF-8");
// 格式化XML输出，有分行和缩进
marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
marshaller.marshal(obj, baos);
String xmlObj = new String(baos.toByteArray());
return xmlObj.replace(" standalone=\"yes\"", "");
}
/**
* @Description: 将对象转换为XML而且写入文件
*
* @param obj
* @param beanClass
* @param file
* @throws Exception
*/
@SuppressWarnings("unchecked")
public void objectToXmlStr(Object obj, Class beanClass, File file) throws Exception {
JAXBContext context = JAXBContext.newInstance(beanClass);
// 根据上下文获取marshaller对象
Marshaller marshaller = context.createMarshaller();
// 设置编码字符集
marshaller.setProperty(Marshaller.JAXB_ENCODING, "UTF-8");
// 格式化XML输出，有分行和缩进
marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
// 打印到控制台
marshaller.marshal(obj, System.out);
marshaller.marshal(obj, file);
}
/**
* @Description: XML转换为对象
*
* @param <T>
* @param file
* @param beanClass
* @return
* @throws Exception
*/
@SuppressWarnings("unchecked")
public <T> T xmlStrToObject(File file, Class<T> beanClass) throws Exception {
T bean = beanClass.newInstance();
JAXBContext context = JAXBContext.newInstance(beanClass);
Unmarshaller unmarshaller = context.createUnmarshaller();
bean = (T) unmarshaller.unmarshal(file);
return bean;
}
/**
*
* @param obj xml转换后的数据存放的对象
* @param xml 要转换的xml
* @return 转换成的对象
*/
@SuppressWarnings("unchecked")
public <T> T xmlToObj(T obj,String xml){
StringReader reader;
JAXBContext context;
Unmarshaller unmarshaller;
reader = new StringReader(xml);
try {
context = JAXBContext.newInstance(obj.getClass());
} catch (JAXBException e) {
System.out.println("建立转换器环境实例JAXBcontext实例出现异常:"+e.getCause()+"/"+e.getCause());
return null;
}
try {
unmarshaller = context.createUnmarshaller();
} catch (JAXBException e) {
System.out.println("建立对象数据转xml数据转换器出现异常:"+e.getCause()+"/"+e.getCause());
return null;
}
T retobj=null;
try {
retobj = (T) unmarshaller.unmarshal(reader);
} catch (JAXBException e) {
System.out.println("xml数据转对象数据出现异常:"+e.getCause()+"/"+e.getCause());
}
return retobj;
}
}