请求帮助，读取文件中某行的特定字符串，尝试了N多种方法，未能实现！！

[soyestrellafortuna]

JAVA读取ORACLE的配置文件，想提取出红色部分的内容。不知道如何进展了。
现在只能做到读取到每一行数据，但不知道如何把需要的部分取出来。希望大家帮助一下，谢谢大家！！！

[code=INIFile]
# TNSNAMES.ORA Network Configuration File: E:\oracle\ora92\network\admin\tnsnames.ora
# Generated by Oracle configuration tools.

DBTEST =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 10.80.215.130)(PORT = 1521))
)
(CONNECT_DATA =
(SERVICE_NAME = dbtest)
)
)

DBNEW =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 10.80.235.129)(PORT = 1521))
)
(CONNECT_DATA =
(SERVICE_NAME = dbnew)
)
)

[/code]

[soyestrellafortuna]

忘记代码中不可以使用颜色了，不好意思。

。。。。。
DBNEW =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 10.80.235.129)(PORT = 1521))
)
(CONNECT_DATA =
(SERVICE_NAME = dbnew)
)
)

[火龙果被占用了]

import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Test {
   
    private final String regex = 
        "(\\w+)\\s*=.*?" +
        "\\(\\s*HOST\\s*=\\s*(\\d{1,3}(?:\\.\\d{1,3}){3}).*?" +
        "\\(\\s*PORT\\s*=\\s*(\\d{1,5}).*?" +
        "\\(\\s*SERVICE_NAME\\s*=\\s*(\\w+)";
    private Pattern pattern = null;

    public static void main(String args[]) throws IOException {
        String str =
            "# TNSNAMES.ORA Network Configuration File: E:\\oracle\\ora92\\network\\admin\\tnsnames.ora\n" +
            "# Generated by Oracle configuration tools.\n" +
            "\n" +
            "DBTEST =\n" +
            "  (DESCRIPTION =\n" +
            "    (ADDRESS_LIST =\n" +
            "      (ADDRESS = (PROTOCOL = TCP)(HOST = 10.80.215.130)(PORT = 1521))\n" +
            "    )\n" +
            "    (CONNECT_DATA =\n" +
            "      (SERVICE_NAME = dbtest)\n" +
            "    )\n" +
            "  )\n" +
            "\n" +
            "DBNEW =\n" +
            "  (DESCRIPTION =\n" +
            "    (ADDRESS_LIST =\n" +
            "      (ADDRESS = (PROTOCOL = TCP)(HOST = 10.80.235.129)(PORT = 1521))\n" +
            "    )\n" +
            "    (CONNECT_DATA =\n" +
            "      (SERVICE_NAME = dbnew)\n" +
            "    )\n" +
            "  )";
        Test t = new Test();
        List<OracleConfiguration> list = t.get(str);
        for(OracleConfiguration conf : list) {
            System.out.println(conf);
        }
    }
    
    public List<OracleConfiguration> get(String str) {
        if(pattern == null) {
            pattern = Pattern.compile(regex, Pattern.DOTALL);
        }
        List<OracleConfiguration> list = new ArrayList<OracleConfiguration>();
        Matcher matcher = pattern.matcher(str);
        while(matcher.find()) {
            OracleConfiguration conf = new OracleConfiguration();
            conf.setName(matcher.group(1));
            conf.setHost(matcher.group(2));
            conf.setPort(matcher.group(3));
            conf.setServiceName(matcher.group(4));
            list.add(conf);
        }
        return list;
    }
}

class OracleConfiguration {
    private String name;
    private String host;
    private String port;
    private String serviceName;
    public String getHost() {
        return host;
    }
    public void setHost(String host) {
        this.host = host;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getPort() {
        return port;
    }
    public void setPort(String port) {
        this.port = port;
    }
    public String getServiceName() {
        return serviceName;
    }
    public void setServiceName(String serviceName) {
        this.serviceName = serviceName;
    }
    @Override
    public String toString() {
        return "Name: " + name + ", Host: " + host + ", Port: " + port + ", Service Name: " + serviceName;
    }
}

[火龙果被占用了]

正则表达式最适合做这种事情了（从字符串中抽取特定的东西）。

[火龙果被占用了]

如果是文件的话，需要再改一下，稍候。。。

[nihuajie05]

....某某人不是再也不回正则的嘛....
哎....

[火龙果被占用了]

import java.io.File;
import java.io.FileNotFoundException;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;
import java.util.regex.MatchResult;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Test {
   
    private final String regex = 
        "(\\w+)\\s*=.*?" +
        "\\(\\s*HOST\\s*=\\s*(\\d{1,3}(?:\\.\\d{1,3}){3}).*?" +
        "\\(\\s*PORT\\s*=\\s*(\\d{1,5}).*?" +
        "\\(\\s*SERVICE_NAME\\s*=\\s*(\\w+)";
    private Pattern pattern = null;

    public static void main(String args[]) throws FileNotFoundException {
        Test test = new Test();
        File file = new File("f:/abc.txt");
        List<OracleConfiguration> list = test.get(file);
        for(OracleConfiguration conf : list) {
            System.out.println(conf);
        }        
    }

    /**
     * Find pattern from file
     * JDK version must be above 1.5
     */    
    public List<OracleConfiguration> get(File file) throws FileNotFoundException {
        List<OracleConfiguration> list = new ArrayList<OracleConfiguration>();
        Scanner scanner = new Scanner(file);
        if(pattern == null) {
            pattern = Pattern.compile(regex, Pattern.DOTALL | Pattern.CASE_INSENSITIVE);
        }
        String str = scanner.findWithinHorizon(pattern, 0);
        while(str!=null) {
            MatchResult matcher = scanner.match();
            str = scanner.findWithinHorizon(pattern, 0);
            OracleConfiguration conf = new OracleConfiguration();
            conf.setName(matcher.group(1));
            conf.setHost(matcher.group(2));
            conf.setPort(matcher.group(3));
            conf.setServiceName(matcher.group(4));
            list.add(conf);
        }
        scanner.close();
        return list;
    }

    /**
     * Find pattern from string
     */
    public List<OracleConfiguration> get(String str) {
        if(pattern == null) {
            pattern = Pattern.compile(regex, Pattern.DOTALL | Pattern.CASE_INSENSITIVE);
        }        
        List<OracleConfiguration> list = new ArrayList<OracleConfiguration>();
        Matcher matcher = pattern.matcher(str);
        while(matcher.find()) {
            OracleConfiguration conf = new OracleConfiguration();
            conf.setName(matcher.group(1));
            conf.setHost(matcher.group(2));
            conf.setPort(matcher.group(3));
            conf.setServiceName(matcher.group(4));
            list.add(conf);
        }
        return list;
    }
}

[kokobox]

果子， 强!!!

[soyestrellafortuna]

果然很强大！！！再次感谢火龙果。我要好好研究研究了。

现在结贴。