java-XML报文的拼装----工具类生成XML报文

女爷i 2023-11-02 07:49 231阅读 0赞

## XML编码模型类（一）： ##

package com.XML.test;
    
    import java.nio.charset.Charset;
    import java.util.HashMap;
    import java.util.Map;
    import java.util.Map.Entry;
    
    public class XMLEncodeModel {
    
    	private Map<String,String> heads = new HashMap<String, String>();//XML报文头
    	private Map<String,String> roots = new HashMap<String, String>();//XML报文数据
    
    	/**往XML模型添加报文头
    	 * @param key 数据名
    	 * @param value 数据值
    	 * @return
    	 */
    	public String setHeadParameter(String key,String value){
    		if(heads == null){
    			heads = new HashMap<String, String>();
    		}
    		return heads.put(key, value);
    	}
    	
    	/**往XML模型添加报文数据
    	 * @param key 数据名
    	 * @param value 数据值
    	 * @return
    	 */
    	public String setRootParameter(String key,String value){
    		if(roots == null){
    			roots = new HashMap<String, String>();
    		}
    		return roots.put(key, value);
    	}
    
    	public String getHeadParameter(String key){
    		return heads!=null?heads.get(key):null;
    	}
    	public String getRootParameter(String key){
    		return roots!=null?roots.get(key):null;
    	}
    
    	
    	/**  产生模型对应的XML数据
    	 * @param charset 编码
    	 * @return
    	 */
    	public String toSendData(Charset charset){
    		StringBuilder builder = new StringBuilder();
    		builder.append("<?xml version=\"1.0\" encoding=\"").append(charset.displayName()).append("\"?>");
    		builder.append("<DATA>");
    		builder.append("<HEAD>");
    		if(heads!=null){
    			for(Entry<String, String> keyVal:heads.entrySet()){
    				if(keyVal!=null){
    					builder.append("<").append(keyVal.getKey()).append(">");
    					builder.append(keyVal.getValue()!=null?keyVal.getValue():"");
    					builder.append("</").append(keyVal.getKey()).append(">");
    				}
    			}
    		}
    		builder.append("</HEAD>");
    		builder.append("<ROOT>");
    		if(roots!=null){
    			for(Entry<String, String> keyVal:roots.entrySet()){
    				if(keyVal!=null){
    					builder.append("<").append(keyVal.getKey()).append(">");
    					builder.append(keyVal.getValue()!=null?keyVal.getValue():"");
    					builder.append("</").append(keyVal.getKey()).append(">");
    				}
    			}
    		}
    		builder.append("</ROOT>");
    		builder.append("</DATA>");
    		return builder.toString();
    	}
    }

### 测试： ###

public static void main(String[] args) {
    		XMLEncodeModel model = new XMLEncodeModel();
    		model.setHeadParameter("HeadName1", "value1");
    		model.setHeadParameter("HeadName2", "value2");
    		model.setHeadParameter("HeadName3", "value3");
    		
    		model.setRootParameter("RootName1", "RootValue1");
    		model.setRootParameter("RootName2", "RootValue2");
    		model.setRootParameter("RootName3", "RootValue3");
    		
    		String xmlString = model.toSendData(Charset.forName("GBK"));
    		System.out.println(xmlString);
    	}

## 结果： ##

<?xml version="1.0" encoding="GBK"?><DATA><HEAD><HeadName3>value3</HeadName3><HeadName2>value2</HeadName2><HeadName1>value1</HeadName1></HEAD><ROOT><RootName3>RootValue3</RootName3><RootName2>RootValue2</RootName2><RootName1>RootValue1</RootName1></ROOT></DATA>

整理后：

<?xml version="1.0" encoding="GBK"?>
    <DATA>
    	<HEAD>
    		<HeadName3>value3</HeadName3>
    		<HeadName2>value2</HeadName2>
    		<HeadName1>value1</HeadName1>
    	</HEAD>
    	<ROOT>
    		<RootName3>RootValue3</RootName3>
    		<RootName2>RootValue2</RootName2>
    		<RootName1>RootValue1</RootName1>
    	</ROOT>
    </DATA>

XML文件格式可以根据不同的接口要求对toSendData()方法进行修改

也可以把xml报文头和报文数据单独的写成模型类：

## XML编码模型类（二）： ##

### 报文头模型： ###

public class XMLHeadmodel {
    
    	private String HeadName1;
    	
    	private String HeadName2;
    
    	private String HeadName3;
    
    	
    	public XMLHeadmodel() {
    		super();
    	}
    
    	public XMLHeadmodel(String headName1, String headName2, String headName3) {
    		super();
    		HeadName1 = headName1;
    		HeadName2 = headName2;
    		HeadName3 = headName3;
    	}
    
    	public String getHeadName1() {
    		return HeadName1;
    	}
    
    	public void setHeadName1(String headName1) {
    		HeadName1 = headName1;
    	}
    
    	public String getHeadName2() {
    		return HeadName2;
    	}
    
    	public void setHeadName2(String headName2) {
    		HeadName2 = headName2;
    	}
    
    	public String getHeadName3() {
    		return HeadName3;
    	}
    
    	public void setHeadName3(String headName3) {
    		HeadName3 = headName3;
    	}
    
    	
    }

### 报文数据模型： ###

public class XMLRootmodel {
    
    	private String RootName1;
    	
    	private String RootName2;
    
    	private String RootName3;
    
    	
    	public XMLRootmodel() {
    		super();
    	}
    
    	public XMLRootmodel(String rootName1, String rootName2, String rootName3) {
    		super();
    		RootName1 = rootName1;
    		RootName2 = rootName2;
    		RootName3 = rootName3;
    	}
    
    	public String getRootName1() {
    		return RootName1;
    	}
    
    	public void setRootName1(String RootName1) {
    		RootName1 = RootName1;
    	}
    
    	public String getRootName2() {
    		return RootName2;
    	}
    
    	public void setRootName2(String RootName2) {
    		RootName2 = RootName2;
    	}
    
    	public String getRootName3() {
    		return RootName3;
    	}
    
    	public void setRootName3(String RootName3) {
    		RootName3 = RootName3;
    	}
    
    	
    }

### xml模型类： ###

import java.lang.reflect.Field;
    import java.nio.charset.Charset;
    import java.util.HashMap;
    import java.util.Map;
    import java.util.Map.Entry;
    
    public class XMLEncodeModel2 {
    
    	private XMLHeadmodel heads = null;//XML报文头
    	private XMLRootmodel roots = null;//XML报文数据
    
    	public void setHeads(XMLHeadmodel heads) {
    		this.heads = heads;
    	}
    	
    	public void setRoots(XMLRootmodel roots) {
    		this.roots = roots;
    	}
    	
    	public XMLHeadmodel getHeads() {
    		return heads;
    	}
    
    	public XMLRootmodel getRoots() {
    		return roots;
    	}
    
    	/**  产生模型对应的XML数据
    	 * @param charset 编码
    	 * @return
    	 * @throws IllegalAccessException 
    	 * @throws IllegalArgumentException 
    	 */
    	public String toSendData(Charset charset) throws IllegalArgumentException, IllegalAccessException{
    		StringBuilder builder = new StringBuilder();
    		builder.append("<?xml version=\"1.0\" encoding=\"").append(charset.displayName()).append("\"?>");
    		builder.append("<DATA>");
    		builder.append("<HEAD>");
    		Class<?> headsclz = heads.getClass();
    		Field[] headsfields = headsclz.getDeclaredFields();
    		for (Field field : headsfields) {
    			field.setAccessible(true);
    			if(field.get(heads)!=null){
    				builder.append("<").append(field.getName()).append(">");
    				builder.append((String) field.get(heads));
    				builder.append("</").append(field.getName()).append(">");
    			}else {
    				System.out.println("XML报文头字段："+ field.getName() + " 为空");
    			}
    		}
    		builder.append("</HEAD>");
    		builder.append("<ROOT>");
    		Class<?> rootsclz = roots.getClass();
    		Field[] rootsfields = rootsclz.getDeclaredFields();
    		for (Field field : rootsfields) {
    			field.setAccessible(true);
    			if(field.get(roots)!=null){
    				builder.append("<").append(field.getName()).append(">");
    				builder.append((String) field.get(roots));
    				builder.append("</").append(field.getName()).append(">");
    			}else {
    				System.out.println("XML报文数据字段："+ field.getName() + " 为空");
    			}
    		}
    		builder.append("</ROOT>");
    		builder.append("</DATA>");
    		return builder.toString();
    	}
    }

### 测试： ###

public static void main(String[] args) throws IllegalArgumentException, IllegalAccessException {
    		XMLEncodeModel2 model = new XMLEncodeModel2();
    		XMLHeadmodel heads = new XMLHeadmodel("headvalue1","headvalue2","headvalue3");//报文头
    		XMLRootmodel roots = new XMLRootmodel("rootvalue1","rootvalue2","rootvalue3");//报文数据
    		model.setHeads(heads);
    		model.setRoots(roots);
    		String xmlString = model.toSendData(Charset.forName("GBK"));
    		System.out.println(xmlString);
    	}

结果整理后和上面第一个测试一样

<?xml version="1.0" encoding="GBK"?>
    <DATA>
    	<HEAD>
    		<HeadName1>headvalue1</HeadName1>
    		<HeadName2>headvalue2</HeadName2>
    		<HeadName3>headvalue3</HeadName3>
    	</HEAD>
    	<ROOT>
    		<RootName1>rootvalue1</RootName1>
    		<RootName2>rootvalue2</RootName2>
    		<RootName3>rootvalue3</RootName3>
    	</ROOT>
    </DATA>