Java eclipse中的多标记错误
我有一个web Crowler的java文件。这给了我一个错误，比如多个标记和一些行号 我刚刚学会了花样和搭配。所以我无法纠正错误 我的代码是Java eclipse中的多标记错误,java,eclipse,markers,Java,Eclipse,Markers,我有一个web Crowler的java文件。这给了我一个错误，比如多个标记和一些行号 我刚刚学会了花样和搭配。所以我无法纠正错误 我的代码是 import java.awt.*; import java.awt.event.*; import java.io.BufferedReader; import java.awt.*; import java.io.IOException; import java.io.InputStreamReader; import java.net
import java.awt.*;
import java.awt.event.*;
import java.io.BufferedReader;
import java.awt.*;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.URL;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.util.regex.PatternSyntaxException;
class initComponents extends Frame implements ActionListener {
// TextField addt ,factorialt,concatt1,concatt2,lengtht,palindromet,comparet1,comparet2,substringt1,substringt2;
//Button add1,factorial1,concat1,length1,palindrome1,compare1,substring1;
String s1="";
//String s3="";
//String s4="";
//String s2="";
Button Search,Clear;
TextField text1;
TextArea text2;
Label lab,lab1,lab2;
public initComponents()
{
MyWindowAdapter1 m=new MyWindowAdapter1(this);
addWindowListener(m);
setTitle("Web Crawler");
setLayout(null);
setSize(1000,1000);
setVisible(true);
setBackground(Color.LIGHT_GRAY);
lab=new Label("Name: ");
text1=new TextField(20);
//text2=new TextArea(80,80);
text2=new TextArea();
//lab1=new Label("Count");
//lab2=new Label();
Search=new Button("Search");
Clear=new Button("Clear");
lab.setBounds(50,50,80,20);
//lab1.setBounds(500,50,80,20);
//lab2.setBounds(590,50,250,20);
text1.setBounds(140,50,250,20);
Search.setBounds(50,100,80,20);
Clear.setBounds(150,100,80,20);
text2.setBounds(50, 200, 700, 500);
//text2.setBounds(200,100,80,20);
add(lab);
add(text1);
//add(lab1);
//add(lab2);
add(Search);
add(Clear);
add(text2);
setVisible(true);
setSize(800,800);
Search.addActionListener(this);
Clear.addActionListener(this);
}
public void actionPerformed(ActionEvent a)
{
// TODO Auto-generated method stub
if(a.getSource().equals(Clear))
{
text1.setText("");
text2.setText("");
//text2.append("");
}
if(a.getSource().equals(Search))
{
s1=text1.getText();
text2.setText("");
//text2.append();
//web_crawler c=new web_crawler();
//c.crawling(s1);
try{
InputStreamReader in = new InputStreamReader(new URL(s1).openStream());
StringBuilder input = new StringBuilder();
int ch;
while ((ch = in.read()) != -1)
input.append((char) ch);
String patternString = "<a\\s+href\\s*=\\s*(\"[^\"]*\"|[^\\s>])\\s*>";
String abc=((?<html>(href|src)\s*=\s*")|(?<css>url\())(?<url>.*?)(?(html)"|\)); **// here is error**
Pattern pattern = Pattern.compile(abc, Pattern.CASE_INSENSITIVE);
Matcher matcher = pattern.matcher(input);
int count=0;
String abc="";
System.out.println(pattern);
System.out.println(matcher.toString());
while (matcher.find())
{
int start = matcher.start();
int end = matcher.end();
String match = input.substring(start, end);
//match.matches();
//jTextArea1.append(match);
//jTextArea1.append("\n");
//String[] tokens=match.split(" ");
//System.out.println(tokens[0].toString());
text2.append(match);
text2.append("\n");
}
}
catch (IOException e)
{
e.printStackTrace();
}
catch (PatternSyntaxException e)
{
e.printStackTrace();
}
}
Exception in thread "AWT-EventQueue-0" java.lang.Error: Unresolved compilation problems:
Syntax error on token "?", new expected
Syntax error on token ">", Type expected after this token
Syntax error on token "Invalid Character", invalid AssignmentOperator
Syntax error on token "Invalid Character", delete this token
Syntax error on tokens, Expression expected instead
at initComponents.actionPerformed(initComponents.java:115)
at java.awt.Button.processActionEvent(Unknown Source)
at java.awt.Button.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$000(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue$4.run(Unknown Source)
at java.awt.EventQueue$4.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
String abc=“（（（（？（href | src）\\s*=\\s*\”）”）（？*？（（html）\“\”）”）；
String abc="((?<html>(href|src)\\s*=\\s*\")|(?<css>url\\())(?<url>.*?)(?(html)\"|\\))";
// **here should be no more error**
//**这里应该没有更多的错误**
String abc=“（（（？（href | src）\\s*=\\s*\”））（？url\（）（？*？（（html）\“|\\）”；
//**这里应该没有更多的错误**
问题是您忘记了引号，应该对字符串中的反斜杠和引号进行转义。您需要在文本周围添加引号，并添加正确的转义序列。您还可以声明字符串abc两次：
String abc=((?<html>(href|src)\s*=\s*")|(?<css>url\())(?<url>.*?)(?(html)"|\)); **// here is error**
Pattern pattern = Pattern.compile(abc, Pattern.CASE_INSENSITIVE);
Matcher matcher = pattern.matcher(input);
int count=0;
String abc=""; **redeclaration here**
String abc=（（？（href | src）\s*=\s*”）（？url\（））（？*？（（html）”|\）；**/这是一个错误**
Pattern=Pattern.compile（abc，Pattern.CASE\u不区分大小写）；
Matcher Matcher=pattern.Matcher（输入）；
整数计数=0；
字符串abc=“”**在此重新声明**
String abc="((?<html>(href|src)\\s*=\\s*\")|(?<css>url\\())(?<url>.*?)(?(html)\"|\\))";
Pattern pattern = Pattern.compile(abc, Pattern.CASE_INSENSITIVE);
Matcher matcher = pattern.matcher(input);
int count=0;
abc="";
String abc=“（（（（？（href | src）\\s*=\\s*\”））（？*？（（html）\“\\”）”；
Pattern=Pattern.compile（abc，Pattern.CASE\u不区分大小写）；
Matcher Matcher=pattern.Matcher（输入）；
整数计数=0；
abc=“”；
String abc=((?<html>(href|src)\s*=\s*")|(?<css>url\())(?<url>.*?)(?(html)"|\)); **// here is error**
Pattern pattern = Pattern.compile(abc, Pattern.CASE_INSENSITIVE);
Matcher matcher = pattern.matcher(input);
int count=0;
String abc=""; **redeclaration here**
String abc=（（？（href | src）\s*=\s*”）（？url\（））（？*？（（html）”|\）；**/这是一个错误**
Pattern=Pattern.compile（abc，Pattern.CASE\u不区分大小写）；
Matcher Matcher=pattern.Matcher（输入）；
整数计数=0；
字符串abc=“”**在此重新声明**
String abc="((?<html>(href|src)\\s*=\\s*\")|(?<css>url\\())(?<url>.*?)(?(html)\"|\\))";
Pattern pattern = Pattern.compile(abc, Pattern.CASE_INSENSITIVE);
Matcher matcher = pattern.matcher(input);
int count=0;
abc="";
String abc=“（（（（？（href | src）\\s*=\\s*\”））（？*？（（html）\“\\”）”；
Pattern=Pattern.compile（abc，Pattern.CASE\u不区分大小写）；
Matcher Matcher=pattern.Matcher（输入）；
整数计数=0；
abc=“”；