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Editorial Team
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Asked: 2026-06-14T07:56:00+00:00

I want to get text from web,i wrote code,use indexOf and subString,but it don’t

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I want to get text from web,i wrote code,use indexOf and subString,but it don’t work.

int index = response_str.indexOf("Remote IP Address:");
index += "Remote IP Address:".length();
index += "</div><br /><div id=\"value1\">".length();
int end = response_str.indexOf("</div><br /><br />", index);
String strIP = response_str.substring(index, end);      
Log.d("","Hello" + strIP  );

And this is sample text,i want to get 49.156.53.152 

<body>
<div id="title">Remote IP Address:</div><br /><div id="value1">**49.156.53.152**</div><br /><br />
<div id="title">UserAgent:</div><br /><div id="value2">Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.11 (KHTML, like Gecko) Chrome/23.0.1271.64 Safari/537.11</div><br /><br />
<!-- Everyone of CCorp employees, Good luck ! --><br />
</body>
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1 Answer

  1. Editorial Team

    You could convert the html page to a sting. and use regex / string operations to obtain the needed data 

    try {
                if(!url_text.getText().toString().trim().equalsIgnoreCase("")){
                    textView.setText("");
                    HttpClient client = new DefaultHttpClient();
                    HttpGet request = new HttpGet(url_text.getText().toString());
                    // Get the response
                    ResponseHandler<String> responseHandler = new BasicResponseHandler();
                    String response_str = client.execute(request, responseHandler);
                    textView.setText(response_str);
                }else{
                    Toast.makeText(getApplicationContext(), "URL String empty.", Toast.LENGTH_LONG).show();
                }
            }
            catch (Exception e) {
                System.out.println("Some error occured.");
                textView.setText(e.getMessage());
            }

    maybe the easiest way is to use sting.split function

    String[] separated = response_str.split("**");
separated[0]; // part before the **
separated[1]; // your needed ip string
separated[2]; // part after the second **
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