資料的儲存方式除了database之外,還有 properties 可以選擇,優點是使用簡單,不需要其它的jar檔
package fothers;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Properties;
import java.util.Set;
public class F_Use_Properties_and_Xml {
public static void main(String[] args){
storeProperties();
storeProperties_xml();
loadProperties();
loadProperties_xml();
}
/**
* 儲存properties
*/
public static void storeProperties(){
Properties proper = new Properties();
proper.setProperty("key1", "value1");
try {
//可以寫入絕對路徑,指定放置任何位置 "d:\\testproperties\\testpro.xml"
//也可以使用 F_GetExecProperty.getExecPath(); 可寫到執行的目錄
proper.store(new FileWriter("d:\\testproperties\\"+"testpro.properties"), "ps");
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
/**
* 讀取properties
*/
public static void loadProperties(){
Properties proper = new Properties();
try {
proper.load(new FileReader("d:\\testproperties\\"+"testpro.properties"));
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
/**
* 儲存 properties (xml)
*/
public static void storeProperties_xml(){
Properties proper = new Properties();
proper.setProperty("keyxml", "valuexml");
try {
proper.storeToXML(new FileOutputStream("d:\\testproperties\\"+"testpro.xml"), "ps");
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
/**
* 讀取 properties (xml)
*/
public static void loadProperties_xml(){
Properties proper = new Properties();
try {
proper.loadFromXML(new FileInputStream("d:\\testproperties\\"+"testpro.xml"));
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}