dom4j解析xml并对节点及属性进行操作

淩亂°似流年 2021-06-24 15:58 500阅读 0赞

进行dom4j解析，首先需要下载jar包：dom4j-1.6.1.jar,fastjson-1.2.41.jar  
xml解析中的代码：

/******************解析传送过来的json数组串***************************/
                        //将获取的数据转成sting
                        String string =  strmap.get(key).toString();
                        //将json串中的数据转换成json对象集合 
                        jsonModels = JSON.parseArray(string,JsonModel.class);
                        for (JsonModel jsonModel : jsonModels) {
                            //resultshow集合
                            resultshows = jsonModel.getResultshows();
                            //istongji 集合
                            tongjiFields = jsonModel.getTongjiFields();
                            //isselect集合
                            selectFields = jsonModel.getSelectFields();
                        }
        /*********************获取并修改xml***************************/
                //创建saxReader对象
                SAXReader reader = new SAXReader();
                //通过reader方式得到文件并转换成document
                Document documents = reader.read(new File(path));
                //获取根节点元素对象
                Element rootElement = documents.getRootElement();
                //获取根节点下的Model节点
                Element module  = rootElement.element("Module");
                //获取Module下的module节点
                Element modules = module.element("module");
                //获取module下的modulelayers
                Element modulelayers = modules.element("modulelayers");
                //获取modulelayers下的modulelayer集合
                List<Element> elements = modulelayers.elements("modulelayer");
                /* //新增 module.addElement("节点1"); module.addElement("节点2", "节点2数值"); //修改节点值 module.setText("节点值"); //删除(通过上一级删除) rootElement.remove(module);*/
                for (int i = 0; i < elements.size(); i++) {
                    //modulelayer下的param集合
                    List<Element> params = elements.get(i).elements("param");
                    for (int j = 0; j < params.size(); j++) {
                        //给节点设置值
                        element.setText("ffff");
                        //给节点新增属性
                        element.addAttribute("test", "111");
                        //获取节点中的属性
                        Attribute resultshow = params.get(j).attribute("resultshow");
                        Attribute isselect = params.get(j).attribute("isselect");
                        Attribute istongji = params.get(j).attribute("istongji");
                        //给节点中的属性设置值
                        resultshow.setValue(resultshows.get(j));
                        isselect.setValue(selectFields.get(j));
                        istongji.setValue(tongjiFields.get(j));
                        //删除节点属性
                        element.remove(resultshow);
                    }
                }
                /**********************修改后的xml输出************************/
                //输出格式
                OutputFormat format = OutputFormat.createPrettyPrint();
                format.setEncoding("UTF-8");
                //指定输出文件以及格式
                XMLWriter writer = new XMLWriter(new OutputStreamWriter(new FileOutputStream(new File(path)),"UTF-8"), format); 
                writer.write(document);
                writer.close();
                writer.close();

xml文件：

<?xml version="1.0" encoding="UTF-8"?>
    <MapConfig>
      <Module describe="模块配置"> 
        <module id="1"> 
          <modulelayers id="1">
            <modulelayer id="0">
               <param resultshow="1" isselect="2" istongji="3"/>
               <param resultshow="4" isselect="5" istongji="6"/>
               <param resultshow="7" isselect="8" istongji="9"/>
               <param resultshow="10" isselect="11" istongji="12"/>
            </modulelayer>
            <modulelayer id="1">
               <param resultshow="13" isselect="14" istongji="15"/>
               <param resultshow="16" isselect="17" istongji="18"/>
               <param resultshow="19" isselect="20" istongji="21"/>
               <param resultshow="22" isselect="23" istongji="24"/>
            </modulelayer>
          </modulelayers>
        </module> 
      </Module>  
    </MapConfig>

json的对象数组：

public class JsonModel {
    
        private List<String> fieldalias;
        private String layernum;
        private String layerimg;
        private List<String> tongjiFields;
        private List<String> filedstypes;
        private List<String> oldField;
        private List<String> resultshows;
        private List<String> selectFields;
        private String isvisible;
        private String layername;
        public List<String> getFieldalias() {
            return fieldalias;
        }
        public void setFieldalias(List<String> fieldalias) {
            this.fieldalias = fieldalias;
        }
        public String getLayernum() {
            return layernum;
        }
        public void setLayernum(String layernum) {
            this.layernum = layernum;
        }
        public String getLayerimg() {
            return layerimg;
        }
        public void setLayerimg(String layerimg) {
            this.layerimg = layerimg;
        }
        public List<String> getTongjiFields() {
            return tongjiFields;
        }
        public void setTongjiFields(List<String> tongjiFields) {
            this.tongjiFields = tongjiFields;
        }
        public List<String> getFiledstypes() {
            return filedstypes;
        }
        public void setFiledstypes(List<String> filedstypes) {
            this.filedstypes = filedstypes;
        }
        public List<String> getOldField() {
            return oldField;
        }
        public void setOldField(List<String> oldField) {
            this.oldField = oldField;
        }
        public List<String> getResultshows() {
            return resultshows;
        }
        public void setResultshows(List<String> resultshows) {
            this.resultshows = resultshows;
        }
        public List<String> getSelectFields() {
            return selectFields;
        }
        public void setSelectFields(List<String> selectFields) {
            this.selectFields = selectFields;
        }
        public String getIsvisible() {
            return isvisible;
        }
        public void setIsvisible(String isvisible) {
            this.isvisible = isvisible;
        }
        public String getLayername() {
            return layername;
        }
        public void setLayername(String layername) {
            this.layername = layername;
        }
    
    }