【文件属性】：
文件名称：属性文件读写（java）
文件大小：3KB
文件格式：JAVA
更新时间：2011-09-24 10:02:18
属性文件读写 javaMail
package org.fenet.javamail;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Properties;
/**
* @ProjectName : JavaTest
* @PackageName : org.fenet.javamail
* @FileName : PropertiyFileReader.java
* @Describe :
* @CreateTime : 2008-9-3下午04:07:01
* @Author : xuebailong(xuebailong@fenet.com.cn)
*/
public class PropertiyFileReader {
/*
* 属性文件名， 包括路径
*/
private String propertiesFileName = null;
private Properties pro = null;
public void setPropertiesFileName(String propertiesFileName) {
this.propertiesFileName = propertiesFileName;
}
public PropertiyFileReader() { }
public PropertiyFileReader(String propertiesFileName) {
this.propertiesFileName = propertiesFileName;
}
/*
* 根据key
* 得到属性文件的值
*/
public String getValueByPropertyKey(String key) {
String value = null;
if (checkPropertyFile()) {
value = getValue(key);
}
return value;
}
/*
* get Value
*/
private String getValue(String key) {
this.pro = new Properties();
String value = null;
InputStream is = getPropertyFileInputStream();
try {
pro.load(is);
value = pro.getProperty(key);
is.close();
} catch (IOException e) {
e.printStackTrace();
}
return value;
}
/*
* set Value,
* comments : 注释
*/
private void setValue(String key, String value, String comments){
this.pro = new Properties();
this.pro.setProperty(key, value);
OutputStream os = getPropertyFileOutputStream();
try {
pro.store(os, comments);
os.close();
} catch (IOException e) {
e.printStackTrace();
}
}
/*
* 得到文件输入句柄
*/
private InputStream getPropertyFileInputStream() {
InputStream is = null;
try {
if (checkPropertyFile()) {
is = new FileInputStream(this.propertiesFileName);
}
} catch (FileNotFoundException e) {
e.printStackTrace();
}
return is;
}
/*
* 得到文件输出句柄
*/
private OutputStream getPropertyFileOutputStream(){
OutputStream os = null;
try {
if (checkPropertyFile()) {
os = new FileOutputStream(this.propertiesFileName);
}
} catch (FileNotFoundException e) {
e.printStackTrace();
}
return os;
}
/*
* 检查属性文件是否被设置值
*/
private boolean checkPropertyFile() {
if (this.propertiesFileName == null) {
return false;
}
return true;
}
/**
* @MethodName : main
* @Author : xuebailong(xuebailong@fenet.com.cn)
* @CreateTime : 2008-7-18下午04:36:58
* @Description:
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
PropertiyFileReader pfR = new PropertiyFileReader();
pfR.setPropertiesFileName("C:/TEMP/mail.properties");
String email = pfR.getValueByPropertyKey("name");
System.out.println(email);
String key = "name";
String value = "xbl";
pfR.setValue(key, value, "This is my name ");
}
}
网友评论
- 不实用,还不如直接文件流读写,或是xml读写
- 不实用,还不如直接文件流读写,或是xml读写