利用Java反射机制拼接xml

dom4j-1.6.jar

import org.dom4j.Document;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;
import org.junit.Test;

import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

public class XMLUtilTest {
     @Test
     public void testXML(){
         Bean bean = new Bean();
         bean.setUsrname("李四");
         bean.setAge("25");
         bean.setCerNo("360402");
         bean.setGender("男");
         bean.setMobileno("1888888");
         bean.setExter("");
         String strXml = bean.makeXml();
         System.out.println(strXml);
     }

     @Test
    public void testToBean() throws Exception {
        Bean bean = new Bean();
        String xml = "\n" +
                "\n" +
                "    李四\n" +
                "    25\n" +
                "    360402\n" +
                "    1888888\n" +
                "    男\n" +
                "";
        bean.toBean(xml);
        System.out.println(bean);
        /**Bean{usrname='李四', age='25', cerNo='360402', mobileno='1888888', gender='男', exter='null'}*/
    }

}
class Base{
    public String makeXml(){
        String result = "";
        Class clazz = this.getClass();
        Field[] fileds = clazz.getDeclaredFields();//返回已声明对象的数组
        Document document = DocumentHelper.createDocument();
        Element rootElement = document.addElement("SENF_MSG");
        for (Field filed : fileds){
            String paramName = filed.getName();
            String methodName = "get" + paramName.substring(0, 1).toUpperCase() + paramName.substring(1);
            try {
                //获取public声明的方法
                Method getMethod = clazz.getMethod(methodName);
                String paramVal = getMethod.invoke(this).toString();
                if(!paramVal.equals("")&¶mVal!=null){
                    Element empName = rootElement.addElement(paramName);
                    empName.setText(paramVal);
                }
            } catch (NoSuchMethodException e) {
                e.printStackTrace();
            } catch (InvocationTargetException e) {
                e.printStackTrace();
            } catch (IllegalAccessException e) {
                e.printStackTrace();
            }
        }
        result = document.asXML();
        return result;
    }

   /**
     * 将xml转换为bean类
     * @param xmlStr
     * @return
     * @throws Exception
     */
    public  Base toBean(String xmlStr) throws Exception{
        Class clazz = this.getClass();
        Field[] fileds = clazz.getDeclaredFields();
        Document document = DocumentHelper.parseText(xmlStr);
        Element root = document.getRootElement();
        List rootList = root.elements();
        for (int i=0;i"set" + paramName.substring(0, 1).toUpperCase() + paramName.substring(1);
            Method setMethod = null;
            setMethod = clazz.getMethod(methodName,String.class);
            setMethod.invoke(this,paramVal);
        }
        return this;
    }
}

class Bean extends Base{

    private String usrname;
    private String age;
    private String cerNo;
    private String mobileno;
    private String gender;
    private String exter;

    public String getUsrname() {
        return usrname;
    }

    public void setUsrname(String usrname) {
        this.usrname = usrname;
    }

    public String getAge() {
        return age;
    }

    public void setAge(String age) {
        this.age = age;
    }

    public String getCerNo() {
        return cerNo;
    }

    public void setCerNo(String cerNo) {
        this.cerNo = cerNo;
    }

    public String getMobileno() {
        return mobileno;
    }

    public void setMobileno(String mobileno) {
        this.mobileno = mobileno;
    }

    public String getGender() {
        return gender;
    }

    public void setGender(String gender) {
        this.gender = gender;
    }

    public String getExter() {
        return exter;
    }

    public void setExter(String exter) {
        this.exter = exter;
    }

    @Override
    public String toString() {
        return "Bean{" +
                "usrname='" + usrname + '\'' +
                ", age='" + age + '\'' +
                ", cerNo='" + cerNo + '\'' +
                ", mobileno='" + mobileno + '\'' +
                ", gender='" + gender + '\'' +
                ", exter='" + exter + '\'' +
                '}';
    }
}

运行结果：

<SENF_MSG><usrname>李四usrname><age>25age><cerNo>360402cerNo><mobileno>1888888mobileno><gender>男gender>SENF_MSG>