[开发工具]优雅地拼接XML

package com.jt.dto;

import org.apache.commons.lang3.StringUtils;

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

/**
 * User: ldj
 * Date: 2022/2/26
 * Time: 20:30
 * Description: No Description
 */
public class SpellXML {
    public static void main(String[] args) {

        //模拟接口参数，别人传过来的
        Map<String, Object> request = new HashMap();
        request.put("Name2", "莉莉");
        request.put("Gender2", "女");

        request.put("Gender1", "男");

        StringBuilder builder = new StringBuilder();

        builder.append("<Message>");
        builder.append("\r\n");
        builder.append("<School>");
        builder.append("\r\n");

        //自己定义的 插入顺序不确定
        Map<String, String> map1 = new HashMap<>();
        map1.put("SchoolName", "草帽中学");
        map1.put("SchoolId", "3333");
        map1.put("SchoolAge", "100");

        map1.forEach((k, v) -> {
            builder.append(String.format("<%s>%s</%s>", k, v, k));
            builder.append("\r\n");

        });

        builder.append("</School>");
        builder.append("\r\n");

        builder.append("<Class>");
        builder.append("\r\n");

        //自己定义的 按插入顺序遍历
        Map<String, String> map2 = new LinkedHashMap<>();
        map2.put("ClassName1", "高三7班");
        map2.put("ClassName2", "高三9班");
        map2.put("ClassName3", "高三3班");

        map2.forEach((k, v) -> {
            builder.append(String.format("<%s>%s</%s>", k, v, k));
            builder.append("\r\n");

        });

        String name1 = (String) request.get("Name1");
        String gender1 = (String) request.get("Gender1");

        String name2 = (String) request.get("Name2");
        String gender2 = (String) request.get("Gender2");


        if (request.containsKey("Name1") || request.containsKey("Gender1")) {

            builder.append("<Teacher>");
            builder.append("\r\n");

            if (StringUtils.isNotBlank(name1)) {
                builder.append("<Name1>" + name1 + "</Name1>");
                builder.append("\r\n");
            }

            if (StringUtils.isNotBlank(gender1)) {
                builder.append("<Gender1>" + gender1 + "</Gender1>");
                builder.append("\r\n");
            }

            builder.append("</Teacher>");
            builder.append("\r\n");

        }

        if (request.containsKey("Name2") || request.containsKey("Gender2")) {

            builder.append("<Student>");
            builder.append("\r\n");

            if (StringUtils.isNotBlank(name2)) {
                builder.append("<Name2>" + name2 + "</Name2>");
                builder.append("\r\n");
            }

            if (StringUtils.isNotBlank(gender2)) {
                builder.append("<Gender2>" + gender2 + "</Gender2>");
                builder.append("\r\n");
            }

            builder.append("</Student>");
            builder.append("\r\n");

        }

        builder.append("</Class>");
        builder.append("\r\n");
        builder.append("</Message>");

        System.out.println(builder.toString());
    }
}

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