我正在从一个网站获取一个类似于 <HTML CODE HERE>Text I want to get 的字符串。并删除括号及其中的文本，但是，我的最终结果始终为空。
我正在尝试的是，
try {
String desc = null;
StringBuilder sb = new StringBuilder();
BufferedReader r = new BufferedReader(new InputStreamReader(in));
String line = null;
boolean codeBlock;
codeBlock = false;
line = "<HTMLCODEHERE>Text I want to get";
System.out.println("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! STARTING DESC: " + line);
while((line = r.readLine()) != null) {
if((line = r.readLine()) == "<") {
codeBlock = true;
}
if((line = r.readLine()) == ">") {
codeBlock = false;
}
if(!codeBlock) {
sb.append(line);
desc = sb.toString();
}
}
System.out.println("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ENDING DESC: " + desc);
holder.txtContent.setText(desc);
} catch (IOException e) {
e.printStackTrace();
}
最佳答案
看看 BufferedReader 的 Java API，即 readline:
Reads a line of text. A line is considered to be terminated by any one of a line feed ('\n'), a carriage return ('\r'), or a carriage return followed immediately by a linefeed.
https://docs.oracle.com/javase/7/docs/api/java/io/BufferedReader.html#readLine()
因此您的代码在这里:
if((line = r.readLine()) == "<") {
codeBlock = true;
}
if((line = r.readLine()) == ">") {
codeBlock = false;
}
永远不会是真的。这些调用还会使您脱离当前的分析路线。
如果我正确理解您的问题，您希望所有文本都位于任何 HTML 标记之间吗？您可以使用像 jsoup 这样的库，或者寻求更简单的实现:
String parse = "<HTMLCODE>My favourite pasta is spaghetti, followed by ravioli</HTMLCODE>";
final char TAG_START = '<';
final char TAG_END = '>';
StringBuilder sb = new StringBuilder();
char[] parseChars = parse.toCharArray();
boolean inTag = true;
for (int i = 0; i< parseChars.length; i++) {
if (parseChars[i] == TAG_START) {
inTag = true;
continue;
}
else if (parseChars[i] == TAG_END) {
inTag = false;
continue;
}
if (!inTag) {
sb.append(parseChars[i]);
}
}
System.out.println(sb.toString());
关于java - 如何使用 Java 解析 HTML 标签中的数据，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/47839873/