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我想從網絡上獲取文本,我編寫了代碼,使用indexOf和subString,但是它不起作用。
int index = response_str.indexOf(“遠程IP地址:”);
index + =“遠程IP地址:”。length();
index + =“  
”。length(); int end = response_str.indexOf(“

”,index); 字符串strIP = response_str.substring(index,end); Log.d(“”,“ Hello” + strIP); 這是示例文本,我想得到49.156.53.152 <身體>
遠程IP地址:
** 49.156.53.152 **

UserAgent:
Mozilla / 5.0(Windows NT 6.1; WOW64)AppleWebKit / 537.11(KHTML,如Gecko)Chrome / 23.0.1271.64 Safari / 537.11

<!-CCorp員工們,祝你好運! ->
您可以將html頁面轉換為字符串。並使用正則表達式/字符串操作來獲取所需的數據
嘗試{
if(!url_text.getText()。toString()。trim()。equalsIgnoreCase(“”)){
textView.setText(“”);
HttpClient客戶端=新的DefaultHttpClient();
HttpGet請求=新的HttpGet(url_text.getText()。toString());
//獲取響應
ResponseHandler  responseHandler = new BasicResponseHandler();
字符串response_str = client.execute(request,responseHandler);
textView.setText(response_str);
}其他{
Toast.makeText(getApplicationContext(),“ URL字符串為空。”,Toast.LENGTH_LONG).show();
}
}
catch(例外e){
System.out.println(“發生某些錯誤。”);
textView.setText(e.getMessage());
}
也許最簡單的方法是使用sting.split函數
字符串[]分隔= response_str.split(“ **”);
分開的[0]; // **之前的部分
分開的[1]; //您需要的ip字符串
分開的[2]; //第二個之後的部分**
|
您必須使用Java的Javascript接口對象來從HTML網頁中獲取所有數據。
最終的WebView webview =(WebView)findViewById(R.id.browser);
webview.getSettings()。setJavaScriptEnabled(true);
webview.addJavascriptInterface(new MyJavaScriptInterface(this),“ HtmlViewer”);
webview.setWebViewClient(new WebViewClient(){
@Override
public void onPageFinished(WebView view,String url){
webview.loadUrl(“ javascript:window.HtmlViewer.showHTML” +
“('''+ document.getElementsByTagName('html')[0] .innerHTML +'');”);
}
});
webview.loadUrl(“ http://android-in-action.com/index.php?post/” +
“常見錯誤和錯誤以及如何解決以避免它們”);
}
類MyJavaScriptInterface {
私有上下文ctx;
MyJavaScriptInterface(Context ctx){
this.ctx = ctx;
}
公共無效的showHTML(String html){
新的AlertDialog.Builder(ctx).setTitle(“ HTML”)。setMessage(html)
.setPositiveButton(android.R.string.ok,null).setCancelable(false).create()。show();
}
}
|
您應該嘗試使用它。
myString = String.subString(“ 
”,YOUR_ORIGINAL_STRING.len); 需要的字符串= myString.endsWith(“ ”); | 您可以使用JSoup。 文檔doc = Jsoup.connect(URL_TO_HTML_PAGE).get(); 元素newsHeadlines = doc.getElementsByAttribute(“ value1”); 字符串ip = newsHeadlines [0] .text()。split(“ **”)[1]; 最後一行基於Greezer帖子。我個人將其替換為與所有可能的IP地址匹配的簡單正則表達式模式。 就像是: \ b(25 [0-5] | 2 [0-4] [0-9] | [01]?[0-9] [0-9]?)\。(25 [0-5] | 2 [ 0-4] [0-9] | [01]?[0-9] [0-9]?)\。(25 [0-5] | 2 [0-4] [0-9] | [01 ]?[0-9] [0-9]?)\。(25 [0-5] | 2 [0-4] [0-9] | [01]?[0-9] [0-9] ?)\ b | 你的答案 StackExchange.ifUsing(“ editor”,function(){ StackExchange.using(“ externalEditor”,function(){ StackExchange.using(“ snippets”,function(){ StackExchange.snippets.init(); }); }); },“代碼段”); StackExchange.ready(function(){ var channelOptions = { 標籤:“” .split(“”), id:“ 1” }; initTagRenderer(“”。split(“”),“” .split(“”),channelOptions); StackExchange.using(“ externalEditor”,function(){ //如果啟用了摘要,則必須在摘要後觸發編輯器 如果(StackExchange.settings.snippets.snippetsEnabled){ StackExchange.using(“ snippets”,function(){ createEditor(); 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