Java实现调⽤⾼德地图逆地理编码-htmlunit 使⽤htmlunit⽅式模拟页⾯点击操作
1、准备：⾼德地图key申请，参考。在到需要实现的功能代码。这⾥测试的是“逆向地理编码⽅法”；
2、l⽂件导⼊相关包：
1<dependency>
2<groupId>net.sourceforge.htmlunit</groupId>
3<artifactId>htmlunit</artifactId>
4<version>2.23</version>
5</dependency>
6<dependency>
7<groupId>net.sourceforge.htmlunit</groupId>
8<artifactId>htmlunit-core-js</artifactId>
9<version>2.23</version>
10</dependency>
3、因为使⽤Java调⽤，只需要实现将经纬度转换成地址的功能，所以我们新建⼀个简单的html页⾯，不需要地图加载。
代码如下：（其中 <script type="text/javascript" src="webapi.amap/maps?
v=1.4.15&key=xxxxxxxxxxxxxx&plugin=AMap.Geocoder"></script> 中的key为您⾃⼰申请的key）
htmlbutton属性1<!doctype html>
2<html lang="en">
3<html>
4<head>
5<meta charset="UTF-8">
6<meta http-equiv="X-UA-Compatible" content="IE=edge">
7<meta name="viewport" content="initial-scale=1.0, user-scalable=no, width=device-width">
8<title>逆地理编码(经纬度->地址)</title>
9<link rel="stylesheet" href="a.amap/jsapi_demos/static/demo-center/css/demo-center.css"/>
10<style>
11 .btn{
12 width:10rem;
13 margin-left:6.8rem;
14 }
15</style>
16</head>
17<body>
18<div class="input-card" style='width:28rem;position: absolute;left: 40%;bottom: auto;top: 40%;'>
19<label style='color:grey'>逆地理编码，根据经纬度获取地址信息</label>
20<div class="input-item">
21<div class="input-item-prepend"><span class="input-item-text">经纬度</span></div>
22<input id='lnglat' type="text" value='116.39,39.9'>
23</div>
24<div class="input-item">
25<div class="input-item-prepend"><span class="input-item-text">地址</span></div>
26<input id='address' type="text" value="">
27</div>
28<input id="regeo" type="button" class="btn" value="经纬度 -> 地址">
29</div>
30<script src="a.amap/jsapi_demos/static/demo-center/js/demoutils.js"></script>
31<script type="text/javascript" src="webapi.amap/maps?v=1.4.15&key=xxxxxxxxxxxxxx&plugin=AMap.Geocoder"></script>
32<script type="text/javascript">
33var geocoder = new AMap.Geocoder();
34function regeoCode() {
35var lnglat = ElementById('lnglat').value.split(',');
36 Address(lnglat, function(status, result) {
37if (status === 'complete'&&ode) {
38var address = ode.formattedAddress;
39 ElementById('address').value = address;
40 }else{
41 ('根据经纬度查询地址失败')
42 }
43 });
44 }
45 ElementById("regeo").onclick = regeoCode;
46 ElementById('lnglat').onkeydown = function(e) {
47if (e.keyCode === 13) {
48 regeoCode();
49return false;
50 }
51return true;
52 };
53</script>
54</body>
55</html>
4、页⾯测试成功后，使⽤htmlunit模拟页⾯点击。我⾃⼰封装了⼯具类，代码如下：import com.gargoylesoftware.htmlunit.BrowserVersion;
import com.gargoylesoftware.htmlunit.NicelyResynchronizingAjaxController;
import com.gargoylesoftware.htmlunit.SilentCssErrorHandler;
import com.gargoylesoftware.htmlunit.WebClient;
import com.gargoylesoftware.htmlunit.html.HtmlButtonInput;
import com.gargoylesoftware.htmlunit.html.HtmlPage;
import com.gargoylesoftware.htmlunit.html.HtmlTextInput;
import java.io.IOException;
public class AmapUtil {
private static String url = "上⾯html的地址";
private static WebClient webClient = new WebClient(BrowserVersion.CHROME);
private static HtmlPage page;
private static HtmlTextInput textField;
private static HtmlButtonInput button;
static {
/* *****配置webClient******/
//ajax
webClient.setAjaxController(new NicelyResynchronizingAjaxController());
//⽀持js
//忽略js错误
/
/忽略css错误
webClient.setCssErrorHandler(new SilentCssErrorHandler());
//不执⾏CSS渲染
//超时时间
//允许重定向
//允许cookie
//⾃定义JavaScript解析器（⽬的是为了不打印js存在的错误到⽇志）
webClient.setJavaScriptEngine(new MyJavaScriptEngine(webClient));
//开始请求⽹站
try {
page = Page(url);
textField = (HtmlTextInput) ElementById("lnglat");
button = (HtmlButtonInput) ElementById("regeo");
} catch (IOException e) {
e.printStackTrace();
}
}
public static String getAddress(String lnglat){
try {
textField.setText(lnglat);
button.click();
return ((ElementById("address")).getText();
} catch (Exception e) {
e.printStackTrace();
}
return "";
}
}
⾃定义JavaScript解析器：
import com.gargoylesoftware.htmlunit.InteractivePage;
import com.gargoylesoftware.htmlunit.ScriptException;
import com.gargoylesoftware.htmlunit.WebClient;
import com.gargoylesoftware.htmlunit.WebWindow;
import com.gargoylesoftware.htmlunit.javascript.JavaScriptEngine;
import com.gargoylesoftware.htmlunit.javascript.JavaScriptErrorListener;
import com.gargoylesoftware.htmlunit.javascript.host.Window;
/**
* ⾃定义JavaScript解析器（⽬的是为了不打印js存在的错误到⽇志）
*/
public class MyJavaScriptEngine extends JavaScriptEngine{
public MyJavaScriptEngine(WebClient webClient) {
super(webClient);
}
@Override
protected void handleJavaScriptException(final ScriptException scriptException, final boolean triggerOnError) {
// r, if it has been set.
final InteractivePage page = Page();
if (triggerOnError && page != null) {
final WebWindow window = EnclosingWindow();
if (window != null) {
final Window w = (Window) ScriptableObject();
if (w != null) {
try {
}
catch (final Exception e) {
handleJavaScriptException(new ScriptException(page, e, null), false);
}
}
}
}
final JavaScriptErrorListener javaScriptErrorListener = getWebClient().getJavaScriptErrorListener();
if (javaScriptErrorListener != null) {
javaScriptErrorListener.scriptException(page, scriptException);
}
if (getWebClient().getOptions().isThrowExceptionOnScriptError()) {
throw scriptException;
}
}
}
View Code
5、编写测试类测试：
@Test
public void test22(){
System.out.Address("116.39,36.9"));
System.out.Address("115.39,36.9"));
System.out.Address("116.39,35.9"));
System.out.Address("116.39,37.9"));
System.out.Address("116.93,37.9"));
}
结果如下：
测试成功。HtmlUnit是⽤Java写的⽆界⾯的浏览器，因为没有界⾯，因此执⾏的速度还可以，它提供了⼀系列的API，如表单的填充，表单的提交，模仿点击链接等。操作起来还是⽐较⽅便的。
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