关于如何将文件内容提取（正则表达式）

test.properties:

region_data UA:444 PPA:444;

comparison_data UA:333 PPA:888;

文件内容类：

public class DataForm {

private String destType;

private String dataBaseRegion;

private String InstanceId;

DataForm(String destType,String dataBaseRegion,String InstanceId){

this.destType = destType;

this.dataBaseRegion = dataBaseRegion;

this.InstanceId = InstanceId;

}

public String getdestType() {

return destType;

}

public void setdestType(String dataType) {

this.destType = dataType;

}

public String getDataBaseRegion() {

return dataBaseRegion;

}

public void setDataBaseRegion(String dataBaseRegion) {

this.dataBaseRegion = dataBaseRegion;

}

public String getInstanceId() {

return InstanceId;

}

public void setInstanceId(String instanceId) {

InstanceId = instanceId;

}

public static void main(String[] args) {

// TODO Auto-generated method stub

}

}

操作类：

import java.io.BufferedReader;

import java.io.FileInputStream;

import java.io.IOException;

import java.io.InputStream;

import java.io.InputStreamReader;

import java.util.ArrayList;

import java.util.List;

import java.util.regex.Pattern;

/**

* 注意在test.properties文件中要按照格式进行填写

* example : 最后都要以;结束。

* @author linyuan

*

*/

public class FileTest{

private static String regexForRegion = ";";

private static String regexFordata = " ";

private static String regexForDetails = ":";

private static String regionString;

private static String comparisonString;

public static String[] getRegexForRegion(StringBuffer in)

{

Pattern p = Pattern.compile(regexForRegion);

String[] region = p.split(in);

return region;

}

public static String[] getRegexFordata(String in)

{

Pattern p = Pattern.compile(regexFordata);

String[] region = p.split(in);

return region;

}

public static String[] getregexForDetails(String in)

{

Pattern p = Pattern.compile(regexForDetails);

String[] region = p.split(in);

return region;

}

public static void main(String[] args) throws IOException {

/**

* 读取文件内容

*/

List<DataForm> dataSource = new ArrayList<DataForm>();

StringBuffer buffer = new StringBuffer();

BufferedReader reader = null;

InputStream is = null;

try{

is = new FileInputStream("test.properties");

String line; // 用来保存每行读取的内容

reader = new BufferedReader(new InputStreamReader(is));

line = reader.readLine(); // 读取第一行

while (line != null) { // 如果 line 为空说明读完了

buffer.append(line); // 将读到的内容添加到 buffer 中

buffer.append("\n"); // 添加换行符

line = reader.readLine(); // 读取下一行

}

/**

* 开始进行文件文件内容匹配

*/

String[] region = getRegexForRegion(buffer);//获得数据源和参考数据库字符串

String[] regionDataPair;

String[] comparisonDataPair;

Pattern p = Pattern.compile(regexForRegion);

regionString = region[0].substring("region_data ".length(), region[0].length());

comparisonString = region[1].replaceAll("comparison_data ", "");

regionDataPair = getRegexFordata(regionString);

comparisonDataPair = getRegexFordata(comparisonString);//获得到数据对

for(int i = 0; i < regionDataPair.length;i++)

{

String[] data = getregexForDetails(regionDataPair[i]);

dataSource.add(new DataForm("region",data[0],data[1]));

}

for(int i = 0; i < comparisonDataPair.length;i++)

{

String[] data = getregexForDetails(comparisonDataPair[i]);

dataSource.add(new DataForm("comparison",data[0],data[1]));

}

}catch(Exception e)

{

e.printStackTrace();

}

finally{

reader.close();

is.close();

}

for(int j = 0; j < dataSource.size();j++)

{

System.out.println("目标是"+dataSource.get(j).getdestType()+",数据库类型是"+dataSource.get(j).getDataBaseRegion()+",实例代号是"+dataSource.get(j).getInstanceId()+"\n");

}

}

}