XML读写工具类

摘要：①读取XML文件，生成pojo对象；②将对象信息保存到xml中。

步骤：

①新建一个普通的java类BasePage；

package com.test.selenium.pages;

import java.util.Map;

import com.thoughtworks.xstream.annotations.XStreamAlias;

@XStreamAlias("basePage")

public class BasePage {

    @XStreamAlias("pageName")

    private String pageName;

    @XStreamAlias("pageXpaths")

    private Map<String, String> pageXpaths;

    public BasePage() {}

    public BasePage(String pageName, Map<String, String> pageXpaths) {

        super();

        this.pageName = pageName;

        this.pageXpaths = pageXpaths;

    }

    public String getPageXpath(String name) {

        return pageXpaths.get(name);

    }

    public String getPageName() {

        return pageName;

    }

    public void setPageName(String pageName) {

        this.pageName = pageName;

    }

    public Map<String, String> getPageXpaths() {

        return pageXpaths;

    }

    public void setPageXpaths(Map<String, String> pageXpaths) {

        this.pageXpaths = pageXpaths;

    }

}

②新建一个page.xml；

<basePage>

  <pageName>pageName</pageName>

  <pageXpaths>

    <entry>

      <string>name2</string>

      <string>value2</string>

    </entry>

    <entry>

      <string>name1</string>

      <string>value1</string>

    </entry>

  </pageXpaths>

</basePage>

③封装XMLTools类；

package com.test.selenium.utils;

import java.io.FileInputStream;

import java.io.FileOutputStream;

import com.thoughtworks.xstream.XStream;

import com.thoughtworks.xstream.annotations.XStreamAlias;

import com.thoughtworks.xstream.io.xml.DomDriver;

public class XMLTools {

    /**

     * 将对象信息保存到xml中

     *

     * @param entity

     * @param file

     */

    public static <T> void saveToXml(T entity, String file) throws Exception {

        XStream stream = new XStream(new DomDriver("utf-8"));

        stream.autodetectAnnotations(true);

        FileOutputStream fileOutputStream = new FileOutputStream(file);

        stream.toXML(entity, fileOutputStream);

    }

    /**

     * 从配置文件中读取配置,并自动转换为对应的对象

     *

     * @param clazz

     * @param file

     * @return 对象

     * @throws Exception

     */

    @SuppressWarnings({ "unchecked" })

    public static <T> T getFromXml(Class<T> clazz, String file) throws Exception {

        XStream xStream = new XStream(new DomDriver("utf-8"));

        xStream.autodetectAnnotations(true);

        FileInputStream fileInputStream = null;

        T entity = null;

        fileInputStream = new FileInputStream(file);

        String alias = "";

        if (clazz.isAnnotationPresent(XStreamAlias.class)) {

            alias = clazz.getAnnotation(XStreamAlias.class).value();//获取POJO里面的@XStreamAlias()的值

        }

        xStream.alias(alias, clazz);

        entity = (T) xStream.fromXML(fileInputStream);

        return entity;

    }

}

④工具类XMLTools的测试类；

package com.test.selenium.test;

import java.util.HashMap;

import java.util.Map;

import org.junit.Test;

import com.test.selenium.pages.BasePage;

import com.test.selenium.utils.XMLTools;

public class XMLToolsTest {

    @Test

    public void testGetPage() {

        BasePage basePage = null;

        try {

            basePage = XMLTools.getFromXml(BasePage.class, "pages/page.xml");

            System.out.println(basePage.getPageName());

            for (Map.Entry<String, String> path:basePage.getPageXpaths().entrySet()){

                System.out.println(path.getKey());

                System.out.println(path.getValue());

            }

        } catch (Exception e) {

            e.printStackTrace();

        }

    }

    @Test

    public void testSavePage(){

        Map<String, String> paths = new HashMap<>();

        paths.put("name1", "value1");

        paths.put("name2", "value2");

        BasePage basePage = new BasePage("pageName", paths);

        try {

            XMLTools.saveToXml(basePage, "pages/page2.xml");

        } catch (Exception e) {

            e.printStackTrace();

        }

    }

}

⑤运行结果；

--testGetPage：

pageName

name2

value2

name1

value1

--testSavePage：

<!--page2.xml文件-->

<basePage>

  <pageName>pageName</pageName>

  <pageXpaths>

    <entry>

      <string>name2</string>

      <string>value2</string>

    </entry>

    <entry>

      <string>name1</string>

      <string>value1</string>

    </entry>

  </pageXpaths>

</basePage>