java写入xml格式数据增强版-可递归进行多层嵌套-优快云博客

本文链接：https://blog.youkuaiyun.com/iteye_13003/article/details/82402334

本文介绍了一个Java程序，该程序演示了如何将嵌套的Map数据结构转换为XML格式的字符串。通过递归地遍历多级Map，程序能够正确处理包含其他Map作为值的情况，并生成相应的XML嵌套结构。

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package com.proxy.util;

import java.util.HashMap;
import java.util.Map;
import java.util.Map.Entry;

/**
 * @author: (le.qiao)
 * @e-mail: qiaolevip@gmail.com
 * @myblog: <a href="http://qiaolevip.iteye.com">http://qiaolevip.iteye.com</a>
 * @date: 2012-8-20
 * 
 */
public class Unlimited {

	public static void main(String[] args) {
		Map<String, Object> map = new HashMap<String, Object>();
		map.put("A", "1111");
		map.put("B", "2222");
		map.put("C", "3333");
		map.put("D", "4444");

		Map<String, Object> map2 = new HashMap<String, Object>();
		map2.put("E", "5555");
		map2.put("F", "6666");

		Map<String, Object> map3 = new HashMap<String, Object>();
		map3.put("G", "5555");
		map3.put("H", "6666");

		map2.put("F", map3);
		map.put("D", map2);

		String result = writePro(map);
		System.out.println(result);
	}

	@SuppressWarnings("unchecked")
	public static String writePro(Map<String, Object> map) {
		StringBuffer result = new StringBuffer();
		if (map != null && map.size() > 0) {
			for (Entry<String, Object> map2 : map.entrySet()) {
				if (map2.getValue() instanceof Map) {
					map2.setValue("\n" + writePro((Map<String, Object>) map2.getValue()));
				}

				result.append("<" + map2.getKey() + ">" + map2.getValue() + "</" + map2.getKey() + ">\n");
			}
		}

		return result.toString();
	}
}


<D>
	<E>5555</E>
	<F>
		<G>5555</G>
		<H>6666</H>
	</F>
</D>
<A>1111</A>
<B>2222</B>
<C>3333</C>